RE: [Repeater-Builder] Re: no power out of duplexer SOLVED with more questions
Guys .I have a similar problem with 2 repeaters but its in the receiver side .The maxon sm4450uhf receiver is tuned to the best it can be on the service monitor -115db and the bpbr duplexer is tuned to correct specs as far as I can see on the hp8921a .I have also tested the repeater in duplex mode into the service monitor and all good -115db no static, power out good Replaced the antenna and interconnecting cable is heliax and its all good I will be testing the antenna system with a new MFJ-269 antenna tester to make sure its ok .Transmission is a1 full distance but when a transmission is sent the repeater its good up close fast to come on but is slow to come on with distant stations. We are using a ctcss tone which I will be checking to see if it is correct .Saying that I should try it without the ctcss and see if it is better without the ctcss detection. Thank You ,Ian Wells Kerinvale Comaudio, 3A Murchison Street, Biloela.4715 Ph 0749922449 Mb 0409159932 Hm 0749922574 Fx 0749922767 www.kerinvalecomaudio.com.au ---Original Message--- From: Jeff DePolo Date: 7/09/2010 8:50:36 AM To: Repeater-Builder@yahoogroups.com Subject: RE: [Repeater-Builder] Re: no power out of duplexer SOLVED with more questions Or speed up the CWID one or two WPM, or change to a slightly higher tone frequency. Top 40 stations sometimes still do this trick (pitching up their CD players or automation system playback speed maybe 1%) - some PD's are convinced that it improves ratings for one reason or another... --- Jeff -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of Joe Sent: Monday, September 06, 2010 6:38 PM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Re: no power out of duplexer SOLVED with more questions I agree. Put it back to the original output. I always like to turn my stuff back at least 10%. Turn the beep tone up in volume, tell them you increased the power. see what they say. 73, Joe, K1ike On 9/6/2010 5:04 PM, Paul Plack wrote: John, here's a more subtle lesson on repeaters, and it has nothing to do with hardware... If you dial the power back 1 dB, your PA may be much happier. If you simultaneously change the courtesy beep to be 10% faster, users will ask you what's changed on the repeater. Tell them you've increased the transmitter output 3 dB, and they'll claim to have noticed the improved coverage. Tell him guys...am I wrong? ;^) 73, Paul, AE4KR - Original Message - From: Tim Sawyer mailto:tisaw...@gmail.com To: Repeater-Builder@yahoogroups.com Sent: Monday, September 06, 2010 2:43 PM Subject: Re: [Repeater-Builder] Re: no power out of duplexer SOLVED with more questions faint_grain.jpg
[Repeater-Builder] Bandpass reject
Hi guys .Would anyone have some uhf bpbr diplexers for sale or know of someone that is selling some Thank You ,Ian Wells Kerinvale Comaudio, 3A Murchison Street, Biloela.4715 Ph 0749922449 Mb 0409159932 Hm 0749922574 Fx 0749922767 www.kerinvalecomaudio.com.au faint_grain.jpg
RE: [Repeater-Builder] Re: Coax shielding
Currently I have no filters between the link transmitter and its antenna. Thank You ,Ian Wells Kerinvale Comaudio, 3A Murchison Street, Biloela.4715 Ph 0749922449 Mb 0409159932 Hm 0749922574 Fx 0749922767 www.kerinvalecomaudio.com.au ---Original Message--- From: Mark HARRISON Date: 06/28/10 11:10:52 To: Repeater-Builder@yahoogroups.com Subject: RE: [Repeater-Builder] Re: Coax shielding Hi Ian, I think I'd be taking a close look at both transmitters with a spectrum analyser and seeing if they are both suitable for repeater work. I'm not familiar with either radio, but usually radios designed for duplex work go to a lot more trouble with internal shielding than your average mobile set. The other issue to consider is the impedance matching between all the components in the system. If the SWR is bad somewhere then there will be RF voltage on the outside of the coax linking mis-matched devices, regardless of how good the coax is. For instance if the link transmitter is seeing a high SWR into it's bandpass cavity then the jumper cable could be radiating unfiltered noise straight into the repeater receiver cable. It could also be that putting the bandpass filter in line has upset the SWR seen by the Link Tx and now radiates MORE noise in the shack. I've also seen some cavities make PA stages become unstable, creating very broad band noise, requiring both the cavities and PA to be retuned to solve the problem 73,Mark VK3BYY From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups com] On Behalf Of kerincom Sent: Monday, 28 June 2010 08:19 AM To: mail=repeater-buil...@yahoogroups.com Subject: Re: [Repeater-Builder] Re: Coax shielding Hi skip .The repeater radios are maxon sm4450sc and the link is a tait t2010 The test I have tried in the past have been definitely point to the link being the problem as when we turn the link off the repeater works to its full range but with it on we get desence. We used to have the link closer to the repeaters aprox 487mhz but we shifted it to 517mhz to fix desense and we find we are still having problems.I think the white noise could be the issue but I tried a notch on the link cable tuned to the repeaters receive and that seem to cause more interference and weaken the links Transmit range.I wondered about putting a BP cavity filter inline with the link but since our link frequencies are 5.2mhz apart I feel you can only tuned the filter for either TX or rx frequencies and not both Unless maybe you can install two in pararell ,one tuned to TX and the other rx . Thank You, Ian Wells, Kerinvale Comaudio, 3A Murchison Street,Biloela.4715 Ph 0749922449 or 0409159932 or 0749922574 www.kerinvalecomaudio.com.au faint_grain.jpg
RE: [Repeater-Builder] kyodo kg108 uhf
Found the problem .I needed to select the ctcss/dcs option .reading ok and programed ok .by the way how do we convert the radio to repeater .I found the mic and ptt on it but I carn't seem to locate the ctcss decode line so when it receives a ctcss signal it controls a line voltage .do we use the horn decode and program the option ? Thank You ,Ian Wells Kerinvale Comaudio, 3A Murchison Street, Biloela.4715 Ph 0749922449 Mb 0409159932 Hm 0749922574 Fx 0749922767 www.kerinvalecomaudio.com.au ---Original Message--- From: kerincom Date: 12/06/2010 7:16:53 AM To: mail=repeater-buil...@yahoogroups.com Subject: RE: [Repeater-Builder] kyodo kg108 uhf It is used specially for radio programming and has worked ok with other software .what would be the best com port settings to have Thank You, Ian Wells, Kerinvale Comaudio, 3A Murchison Street,Biloela.4715 Ph 0749922449 or 0409159932 or 0749922574 www.kerinvalecomaudio.com.au ---Original Message--- From: Ross Johnson Date: 06/12/10 05:37:52 To: Repeater-Builder@yahoogroups.com Subject: RE: [Repeater-Builder] kyodo kg108 uhf You know that com port works? Older machines serial ports were poorly or not even buffered sometimes. Also if this is a programming laptop, where you use it to program other radios, make sure none of the other programming software is tying up that com port while the machine is running. Ross kc7rjk -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups com] On Behalf Of kerincom Sent: Friday, June 11, 2010 7:49 AM To: mail=repeater-buil...@yahoogroups.com Subject: Re: [Repeater-Builder] kyodo kg108 uhf Already done that Thank You, Ian Wells, Kerinvale Comaudio, 3A Murchison Street,Biloela.4715 Ph 0749922449 or 0409159932 or 0749922574 www.kerinvalecomaudio.com.au ---Original Message--- From: wd8chl Date: 06/11/10 23:30:03 To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] kyodo kg108 uhf On 6/11/2010 7:45 AM, kerincom wrote: Hi guys .I have the genuine software and programming cable and kg108 uhf radios and I am trying to read and program them .The software is installed on a Toshiba 700mhnz laptop running win98se .and when I try to communicate with the radio it comes up with error in communications .I have tried running it in dos and still the same .It seems to be a com error because I have 2 programming cables and the get the same result with both.Can anyone suggest anything I'm not familiar with those, but chances are if they are more than 6-8 years old, the software is DOS, and Windows won't allow control of the RS-232 port the way it wants. Hit the 'Start' button, and in the shutdown menu, one selection will be Restart in MS-DOS mode. Select that, and it will take you to a true DOS environment. You'll have to navigate back to the directory you have your program in from there using DOS commands. Jim
RE: [Repeater-Builder] kyodo kg108 uhf
Kg108-F25W 450-520mhz I am looking for information on how to link the radios as a repeater. Thank You ,Ian Wells Kerinvale Comaudio, 3A Murchison Street, Biloela.4715 Ph 0749922449 Mb 0409159932 Hm 0749922574 Fx 0749922767 www.kerinvalecomaudio.com.au ---Original Message--- From: kevin valentino Date: 06/12/10 13:49:56 To: Repeater-Builder@yahoogroups.com Subject: RE: [Repeater-Builder] kyodo kg108 uhf What radios are you using? and NO you dontwant the PA option on a repeater. Assuming your using either Maxtrac or Radius series.!!! --- On Fri, 6/11/10, Ian Wells kerin...@pacific.net.au wrote: From: Ian Wells kerin...@pacific.net.au Subject: RE: [Repeater-Builder] kyodo kg108 uhf To: Repeater-Builder@yahoogroups.com Date: Friday, June 11, 2010, 8:27 PM Found the problem .I needed to select the ctcss/dcs option .reading ok and programed ok .by the way how do we convert the radio to repeater .I found the mic and ptt on it but I carn't seem to locate the ctcss decode line so when it receives a ctcss signal it controls a line voltage .do we use the horn decode and program the option ? Thank You ,Ian Wells Kerinvale Comaudio, 3A Murchison Street, Biloela.4715 Ph 0749922449 Mb 0409159932 Hm 0749922574 Fx 0749922767 www.kerinvalecomaud io.com.au ---Original Message- -- From: kerincom Date: 12/06/2010 7:16:53 AM To: mail=Repeater- buil...@yahoogro ups.com Subject: RE: [Repeater-Builder] kyodo kg108 uhf It is used specially for radio programming and has worked ok with other software .what would be the best com port settings to have Thank You, Ian Wells, Kerinvale Comaudio, 3A Murchison Street,Biloela. 4715 Ph 0749922449 or 0409159932 or 0749922574 www.kerinvalecomaud io.com.au ---Original Message- -- From: Ross Johnson Date: 06/12/10 05:37:52 To: Repeater-Builder@ yahoogroups. com Subject: RE: [Repeater-Builder] kyodo kg108 uhf You know that com port works? Older machines serial ports were poorly or not even buffered sometimes. Also if this is a programming laptop, where you use it to program other radios, make sure none of the other programming software is tying up that com port while the machine is running. Ross kc7rjk -Original Message- From: Repeater-Builder@ yahoogroups. com [mailto:Repeater- buil...@yahoogro ups.com] On Behalf Of kerincom Sent: Friday, June 11, 2010 7:49 AM To: mail=Repeater- buil...@yahoogro ups.com Subject: Re: [Repeater-Builder] kyodo kg108 uhf Already done that Thank You, Ian Wells, Kerinvale Comaudio, 3A Murchison Street,Biloela. 4715 Ph 0749922449 or 0409159932 or 0749922574 www.kerinvalecomaud io.com.au ---Original Message- -- From: wd8chl Date: 06/11/10 23:30:03 To: Repeater-Builder@ yahoogroups. com Subject: Re: [Repeater-Builder] kyodo kg108 uhf On 6/11/2010 7:45 AM, kerincom wrote: Hi guys .I have the genuine software and programming cable and kg108 uhf radios and I am trying to read and program them .The software is installed on a Toshiba 700mhnz laptop running win98se .and when I try to communicate with the radio it comes up with error in communications .I have tried running it in dos and still the same .It seems to be a com error because I have 2 programming cables and the get the same result with both.Can anyone suggest anything I'm not familiar with those, but chances are if they are more than 6-8 years old, the software is DOS, and Windows won't allow control of the RS-232 port the way it wants. Hit the 'Start' button, and in the shutdown menu, one selection will be Restart in MS-DOS mode. Select that, and it will take you to a true DOS environment. You'll have to navigate back to the directory you have your program in from there using DOS commands. Jim faint_grain.jpg
Re: [Repeater-Builder] Ctcss detection
I am wondering if the tait t2000 or any other radio can decode before the squelch opens .i.e. It decodes seperately to the squelch Thank You ,Ian Wells Kerinvale Comaudio, 361 Camboon road, Biloela.4715 Ph 0749922449 Mb 0409159932 Hm 0749922574 Fx 0749922767 www.kerinvalecomaudio.com.au ---Original Message--- From: Kris Kirby Date: 20/03/2010 7:30:27 PM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Ctcss detection On Sat, 20 Mar 2010, kerincom wrote: Hi guys .A long time ago there was a series of post over the ctcss detection time and I am wondering if anyone can suggest which radios are the fastest on ctcss detection From what I've been able to determine, unaided by equipment, the Motorola Saber appears to enable the audio PA (speaker pops) at about the same time whether on carrier, PL, or DPL squelch. -- Kris Kirby, KE4AHR Disinformation Analyst faint_grain.jpg
[Repeater-Builder] Maxon sm4450ne
Hi guys .I have a sm4450ne and I am having problems with setting it up for 507 and 517 mhz .I have set 2 up till now and they are working fine except these NE are having problems with the vco lock error 3 .I am wondering if anyone can shed some light .I can set it up for rx on 507 but it wont lock on transmitt. Thank You ,Ian Wells Kerinvale Comaudio, 361 Camboon road, Biloela.4715 Ph 0749922449 Mb 0409159932 Hm 0749922574 Fx 0749922767 www.kerinvalecomaudio.com.au faint_grain.jpg
[Repeater-Builder] Adapting ctcss decoders to maxon pm150
Hi guys .I was looking at adapting a midian tds-1 to a maxon pm150 but we end up with feedback problems when used in repeater . Can anyone suggest ideas to give rf protection to the decoder chip .I came up with shielded cable between the board and the chip And to install the chip in a metal case on near the radio .or mounting it as close to the rf motherboard as possible but I don't think It will fit under the lid .The reason we would like to use the tds-1 is that the radio has to unmute before it decodes And I would like it to decode before the signal opens the mute .This improves the speed the repeater opening up On a valid signal . Thank You ,Ian Wells Kerinvale Comaudio, 361 Camboon road, Biloela.4715 Ph 0749922449 Mb 0409159932 Hm 0749922574 Fx 0749922767 www.kerinvalecomaudio.com.au faint_grain.jpg
Re: [Repeater-Builder] Adapting ctcss decoders to maxon pm150
Yep uhf 450-470mhz.I will check on that and make sure Thank You ,Ian Wells Kerinvale Comaudio, 361 Camboon road, Biloela.4715 Ph 0749922449 Mb 0409159932 Hm 0749922574 Fx 0749922767 www.kerinvalecomaudio.com.au ---Original Message--- From: Don Crutcher Date: 3/03/2010 3:04:49 PM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Adapting ctcss decoders to maxon pm150 Hello Ian IF your repeater is a UHF and the CTCSS decoder has a 5 MHz crystal oscillator, it will mix with the transmitter and give a signal at the receiver frequency 5 MHz lower (in Australia RX 433-435 TX 438-440 MHz) This a is a common occurrence with UHF Philips FM-828's. The fix is to use a tuneable CTCSS decoder and not use the one with a crystal oscillator in it. Been there and done that. Took years to find out why we had a whistle in the receiver (heterodyne). Regards Don vk2zcz - Original Message - From: Ian Wells To: Repeater-Builder@yahoogroups.com Sent: Wednesday, March 03, 2010 2:48 PM Subject: [Repeater-Builder] Adapting ctcss decoders to maxon pm150 Hi guys .I was looking at adapting a midian tds-1 to a maxon pm150 but we end up with feedback problems when used in repeater . Can anyone suggest ideas to give rf protection to the decoder chip .I came up with shielded cable between the board and the chip And to install the chip in a metal case on near the radio .or mounting it as close to the rf motherboard as possible but I don't think It will fit under the lid .The reason we would like to use the tds-1 is that the radio has to unmute before it decodes And I would like it to decode before the signal opens the mute .This improves the speed the repeater opening up On a valid signal . Thank You ,Ian Wells Kerinvale Comaudio, 361 Camboon road, Biloela.4715 Ph 0749922449 Mb 0409159932 Hm 0749922574 Fx 0749922767 www.kerinvalecomaudio.com.au faint_grain.jpg
Re: [Repeater-Builder] Adapting ctcss decoders to maxon pm150
From the manual it says it uses a 4 meg crystal Thank You ,Ian Wells Kerinvale Comaudio, 361 Camboon road, Biloela.4715 Ph 0749922449 Mb 0409159932 Hm 0749922574 Fx 0749922767 www.kerinvalecomaudio.com.au ---Original Message--- From: Don Crutcher Date: 3/03/2010 3:04:49 PM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Adapting ctcss decoders to maxon pm150 Hello Ian IF your repeater is a UHF and the CTCSS decoder has a 5 MHz crystal oscillator, it will mix with the transmitter and give a signal at the receiver frequency 5 MHz lower (in Australia RX 433-435 TX 438-440 MHz) This a is a common occurrence with UHF Philips FM-828's. The fix is to use a tuneable CTCSS decoder and not use the one with a crystal oscillator in it. Been there and done that. Took years to find out why we had a whistle in the receiver (heterodyne). Regards Don vk2zcz - Original Message - From: Ian Wells To: Repeater-Builder@yahoogroups.com Sent: Wednesday, March 03, 2010 2:48 PM Subject: [Repeater-Builder] Adapting ctcss decoders to maxon pm150 Hi guys .I was looking at adapting a midian tds-1 to a maxon pm150 but we end up with feedback problems when used in repeater . Can anyone suggest ideas to give rf protection to the decoder chip .I came up with shielded cable between the board and the chip And to install the chip in a metal case on near the radio .or mounting it as close to the rf motherboard as possible but I don't think It will fit under the lid .The reason we would like to use the tds-1 is that the radio has to unmute before it decodes And I would like it to decode before the signal opens the mute .This improves the speed the repeater opening up On a valid signal . Thank You ,Ian Wells Kerinvale Comaudio, 361 Camboon road, Biloela.4715 Ph 0749922449 Mb 0409159932 Hm 0749922574 Fx 0749922767 www.kerinvalecomaudio.com.au faint_grain.jpg
Re: [Repeater-Builder] Adapting ctcss decoders to maxon pm150
Thanks don that would explain the trouble I had a couple years ago and we setup the radios to decode on their own .that works ok but it is slow Thank You ,Ian Wells Kerinvale Comaudio, 361 Camboon road, Biloela.4715 Ph 0749922449 Mb 0409159932 Hm 0749922574 Fx 0749922767 www.kerinvalecomaudio.com.au ---Original Message--- From: Don Crutcher Date: 3/03/2010 4:21:09 PM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Adapting ctcss decoders to maxon pm150 Hello again Ian I've also tried a decoder with a 4 MHz crystal and it still heterodyned. Get a tunable decoder and your troubles will be solved. What I found was if I turned up the TX CTCSS encode, the decoder activated and held up the receiver which held up the transmitter etc. We also had a ~ 1KHz whistle, probably the receive signals or TX were off frequency by that much. Peter VK2ZTV also has had the same problem with FM-828's Regards Don vk2zcz - Original Message - From: Ian Wells To: Repeater-Builder@yahoogroups.com Sent: Wednesday, March 03, 2010 3:12 PM Subject: Re: [Repeater-Builder] Adapting ctcss decoders to maxon pm150 From the manual it says it uses a 4 meg crystal Thank You ,Ian Wells Kerinvale Comaudio, 361 Camboon road, Biloela.4715 Ph 0749922449 Mb 0409159932 Hm 0749922574 Fx 0749922767 www.kerinvalecomaudio.com.au ---Original Message--- From: Don Crutcher Date: 3/03/2010 3:04:49 PM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Adapting ctcss decoders to maxon pm150 Hello Ian IF your repeater is a UHF and the CTCSS decoder has a 5 MHz crystal oscillator, it will mix with the transmitter and give a signal at the receiver frequency 5 MHz lower (in Australia RX 433-435 TX 438-440 MHz) This a is a common occurrence with UHF Philips FM-828's. The fix is to use a tuneable CTCSS decoder and not use the one with a crystal oscillator in it. Been there and done that. Took years to find out why we had a whistle in the receiver (heterodyne). Regards Don vk2zcz - Original Message - From: Ian Wells To: Repeater-Builder@yahoogroups.com Sent: Wednesday, March 03, 2010 2:48 PM Subject: [Repeater-Builder] Adapting ctcss decoders to maxon pm150 Hi guys .I was looking at adapting a midian tds-1 to a maxon pm150 but we end up with feedback problems when used in repeater . Can anyone suggest ideas to give rf protection to the decoder chip .I came up with shielded cable between the board and the chip And to install the chip in a metal case on near the radio .or mounting it as close to the rf motherboard as possible but I don't think It will fit under the lid .The reason we would like to use the tds-1 is that the radio has to unmute before it decodes And I would like it to decode before the signal opens the mute .This improves the speed the repeater opening up On a valid signal . Thank You ,Ian Wells Kerinvale Comaudio, 361 Camboon road, Biloela.4715 Ph 0749922449 Mb 0409159932 Hm 0749922574 Fx 0749922767 www.kerinvalecomaudio.com.au faint_grain.jpg
Re: [Repeater-Builder] Just a Crazy Thought
On some bands a simplex repeater can be used .it records your voice and then replays it back on air from a high point .Repeaters on uhf CB are allowed but linking between them isn't aloud .On commercial frequencies linking of the repeaters is allowed as long as they are owned by the same owner.On 27mhz CB I have heard of repeaters but haven't come across one .A owner of 27mhz can have what is called a remote base which is a uhf CB or 27mhz radio on a hill and is controlled remotely by cable or via radio link from another site .On amateur they can do a lot more with their gear and they are starting to have 29mhz fm repeaters installed around the country .Another type of communication that has been turning up in the background is 27meg fm which as far as I know isn't allowed yet by acma . Thank You ,Ian Wells Kerinvale Comaudio, 361 Camboon road, Biloela.4715 Ph 0749922449 Mb 0409159932 Hm 0749922574 Fx 0749922767 www.kerinvalecomaudio.com.au ---Original Message--- From: i recycle computers Date: 12/02/2010 1:29:46 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Just a Crazy Thought I have heard numorous urban legends of 27 MHz CB repeaters being built. has anyone ever come across such a thing. if not does anyone think it is even possible from a technical standpoint? the limitations are AM mode, and using any of the 40 CB channels with 4 watts PEP AM or 12 Watts PEP SSB ie: using completely un modified type certified CB gear. Legally a repeater is illegal on CB, but i just want to do an excersize in thought as to what problems someone may run into with such a project, etc. i have seen this questioned asked numorous times through the years and even heard rumors of it actually being done. no one though has actually went deep into the technical aspects of such a project or could point me out to the people who are operating or operated such a setup. Thanks, Rev. Robert P. Chrysafis I Recycle Computers Saving UnWanted PC's From The Landfill One Computer At A Time :) Listen To My Free Live Police Scanner Feed for Tuscaloosa / Northport http://www.radioreference.com/apps/audio/?feedId=3836 faint_grain.jpg
Re: [Repeater-Builder] Just a Crazy Thought
On some bands a simplex repeater can be used .it records your voice and then replays it back on air from a high point .Repeaters on uhf CB are allowed but linking between them isn't aloud .On commercial frequencies linking of the repeaters is allowed as long as they are owned by the same owner.On 27mhz CB I have heard of repeaters but haven't come across one .A owner of 27mhz can have what is called a remote base which is a uhf CB or 27mhz radio on a hill and is controlled remotely by cable or via radio link from another site .On amateur they can do a lot more with their gear and they are starting to have 29mhz fm repeaters installed around the country .Another type of communication that has been turning up in the background is 27meg fm which as far as I know isn't allowed yet by acma . Thank You ,Ian Wells Kerinvale Comaudio, 361 Camboon road, Biloela.4715 Ph 0749922449 Mb 0409159932 Hm 0749922574 Fx 0749922767 www.kerinvalecomaudio.com.au ---Original Message--- From: STeve Andre' Date: 12/02/2010 1:45:28 PM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Just a Crazy Thought On Thursday 11 February 2010 21:29:25 i recycle computers wrote: I have heard numorous urban legends of 27 MHz CB repeaters being built. has anyone ever come across such a thing. if not does anyone think it is even possible from a technical standpoint? the limitations are AM mode, and using any of the 40 CB channels with 4 watts PEP AM or 12 Watts PEP SSB ie: using completely un modified type certified CB gear. Legally a repeater is illegal on CB, but i just want to do an excersize in thought as to what problems someone may run into with such a project, etc. i have seen this questioned asked numorous times through the years and even heard rumors of it actually being done. no one though has actually went deep into the technical aspects of such a project or could point me out to the people who are operating or operated such a setup. Thanks, Rev. Robert P. Chrysafis Duplexers would be interesting to get. I can imagine the look on some sales reps face, when asked about pricing for an 11m unit. But you could certainly do a split site, in on channel 1 and out on channel 40 (or whatever actual frequency would be the farthest). Think of 10m repeaters and you've got most of the idea, though interference on 11m might be worse. Or has 11m usage dropped a lot because of cell phones? Me, I've never heard of one in operation. --STeve Andre' wb8wsf en82 faint_grain.jpg
Re: [Repeater-Builder] Just a Crazy Thought
Possibly .we just use a commercial 450-500mhz licence to link them but you can use a studio link or site to site link licence Thank You ,Ian Wells Kerinvale Comaudio, 361 Camboon road, Biloela.4715 Ph 0749922449 Mb 0409159932 Hm 0749922574 Fx 0749922767 www.kerinvalecomaudio.com.au ---Original Message--- From: i recycle computers Date: 12/02/2010 1:50:30 PM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Just a Crazy Thought guess now a days you could use 900 MHz Spread Spectrum License Free Radios for the link between sites? - Original Message - From: Ian Wells kerin...@pacific.net.au To: Repeater-Builder@yahoogroups.com Sent: Thursday, February 11, 2010 8:46 PM Subject: Re: [Repeater-Builder] Just a Crazy Thought On some bands a simplex repeater can be used .it records your voice and then replays it back on air from a high point .Repeaters on uhf CB are allowed but linking between them isn't aloud .On commercial frequencies linking of the repeaters is allowed as long as they are owned by the same owner.On 27mhz CB I have heard of repeaters but haven't come across one .A owner of 27mhz can have what is called a remote base which is a uhf CB or 27mhz radio on a hill and is controlled remotely by cable or via radio link from another site .On amateur they can do a lot more with their gear and they are starting to have 29mhz fm repeaters installed around the country .Another type of communication that has been turning up in the background is 27meg fm which as far as I know isn't allowed yet by acma . Thank You ,Ian Wells Kerinvale Comaudio, 361 Camboon road, Biloela.4715 Ph 0749922449 Mb 0409159932 Hm 0749922574 Fx 0749922767 www.kerinvalecomaudio.com.au ---Original Message--- From: STeve Andre' Date: 12/02/2010 1:45:28 PM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Just a Crazy Thought On Thursday 11 February 2010 21:29:25 i recycle computers wrote: I have heard numorous urban legends of 27 MHz CB repeaters being built. has anyone ever come across such a thing. if not does anyone think it is even possible from a technical standpoint? the limitations are AM mode, and using any of the 40 CB channels with 4 watts PEP AM or 12 Watts PEP SSB ie: using completely un modified type certified CB gear. Legally a repeater is illegal on CB, but i just want to do an excersize in thought as to what problems someone may run into with such a project, etc. i have seen this questioned asked numorous times through the years and even heard rumors of it actually being done. no one though has actually went deep into the technical aspects of such a project or could point me out to the people who are operating or operated such a setup. Thanks, Rev. Robert P. Chrysafis Duplexers would be interesting to get. I can imagine the look on some sales reps face, when asked about pricing for an 11m unit. But you could certainly do a split site, in on channel 1 and out on channel 40 (or whatever actual frequency would be the farthest). Think of 10m repeaters and you've got most of the idea, though interference on 11m might be worse. Or has 11m usage dropped a lot because of cell phones? Me, I've never heard of one in operation. --STeve Andre' wb8wsf en82 faint_grain.jpg
[Repeater-Builder] Sd174 uhf
Hi guys .Has anyone any information on the mic that can be used on the data radio mic input (pin 7) or have been able to adapt a mic to be used on it Thank You ,Ian Wells Kerinvale Comaudio, 361 Camboon road, Biloela.4715 Ph 0749922449 Mb 0409159932 Hm 0749922574 Fx 0749922767 www.kerinvalecomaudio.com.au faint_grain.jpg
Re: [Repeater-Builder] Sd174 uhf
Our TX and rx frequencies are 10 meg apart so a band pass filter may have problems giving good signal on both or should I tune the filter in the middle of the two frequencies Thank You ,Ian Wells Kerinvale Comaudio, 361 Camboon road, Biloela.4715 Ph 0749922449 Mb 0409159932 Hm 0749922574 Fx 0749922767 www.kerinvalecomaudio.com.au ---Original Message--- From: DCFluX Date: 8/12/2009 10:53:00 AM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Sd174 uhf The lack of a front end comes to mind. You basicly got there a hand held in a pretty box with a DB-9. Try adding a bandpass filter, such as a bandpass cavity, shorted coaxial stub or a interdigital bandpass filter. On Mon, Dec 7, 2009 at 3:42 PM, kerinvale kerin...@pacific.net.au wrote: Hi guys .I have a SD 174 maxon data radio and it seems to not be able filter other transmitters near by .The receiver opens up with squark noise even when programmed with ctcss .can anyone suggest whats possibly the problem is and possible fixes.I have one on site and it seems to be working perfectly but I know of two that are the same carn't filter signals nearby Thank You, Ian Wells, Kerinvale Comaudio, 361 Camboon Road.Biloela.4715 Ph 0749922449 or 0409159932 or 0749922574 www.kerinvalecomaudio.com.au . faint_grain.jpg
Re: [Repeater-Builder] Sd174 uhf
How would a circulator or isolator work .The transmitt signal from the data radio could pass through to the antenna and the rx signal could be received from the antenna and The signal you wish to remove from the data radio radio on receive could be notched to the dummy load . The data radio radio frequencies are set for 507.025mhz rx 517.025mhz TX and the frequency that is interfering is on 473.200mhz. Thank You ,Ian Wells Kerinvale Comaudio, 361 Camboon road, Biloela.4715 Ph 0749922449 Mb 0409159932 Hm 0749922574 Fx 0749922767 www.kerinvalecomaudio.com.au ---Original Message--- From: DCFluX Date: 8/12/2009 11:08:15 AM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Sd174 uhf depends on the quality of the filter. I would try using the coax stub routine with RG-58 as the coax, that should be fairly wide. But look at it on a spectrum analyzer to be sure it will pass both signals. If not try building a 3-5 pole interdigital BPF. Those can tune 10MHz wide easy. On Mon, Dec 7, 2009 at 4:57 PM, Ian Wells kerin...@pacific.net.au wrote: Our TX and rx frequencies are 10 meg apart so a band pass filter may have problems giving good signal on both or should I tune the filter in the middle of the two frequencies Thank You ,Ian Wells Kerinvale Comaudio, 361 Camboon road, Biloela.4715 Ph 0749922449 Mb 0409159932 Hm 0749922574 Fx 0749922767 www.kerinvalecomaudio.com.au ---Original Message--- From: DCFluX Date: 8/12/2009 10:53:00 AM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Sd174 uhf The lack of a front end comes to mind. You basicly got there a hand held in a pretty box with a DB-9. Try adding a bandpass filter, such as a bandpass cavity, shorted coaxial stub or a interdigital bandpass filter. On Mon, Dec 7, 2009 at 3:42 PM, kerinvale kerin...@pacific.net.au wrote: Hi guys .I have a SD 174 maxon data radio and it seems to not be able filter other transmitters near by .The receiver opens up with squark noise even when programmed with ctcss .can anyone suggest whats possibly the problem is and possible fixes.I have one on site and it seems to be working perfectly but I know of two that are the same carn't filter signals nearby Thank You, Ian Wells, Kerinvale Comaudio, 361 Camboon Road.Biloela.4715 Ph 0749922449 or 0409159932 or 0749922574 www.kerinvalecomaudio.com.au . faint_grain.jpg
Re: [Repeater-Builder] Sd174 uhf
Can one side of a 6mc450s diplexer be used as I have a few of them laying around .The first test I tried worked well with a 6mc450s with no interference but the 174 lost a lot of its TX power through it .from 3 watt it reduced it down to .5 watt .I can say I didn't have a 50 ohm terminator on the unused port which I should try next time and see how that's goes Thank You ,Ian Wells Kerinvale Comaudio, 361 Camboon road, Biloela.4715 Ph 0749922449 Mb 0409159932 Hm 0749922574 Fx 0749922767 www.kerinvalecomaudio.com.au ---Original Message--- From: DCFluX Date: 8/12/2009 11:51:22 AM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Sd174 uhf In that case use a single notch cavity to remove the 473 frequency in question. Circulators can be used in conjunction with shorted stubs and cavities to create super narrow notch filters, but this may be more than you need. http://books.google com/books?id=trJ6rhF0lU0Cpg=PA122dq=circulator+notch+filter#v=onepageq=cir ulator%20notch%20filterf=false On Mon, Dec 7, 2009 at 5:21 PM, Ian Wells kerin...@pacific.net.au wrote: How would a circulator or isolator work .The transmitt signal from the data radio could pass through to the antenna and the rx signal could be received from the antenna and The signal you wish to remove from the data radio radio on receive could be notched to the dummy load . The data radio radio frequencies are set for 507.025mhz rx 517.025mhz TX and the frequency that is interfering is on 473.200mhz. Thank You ,Ian Wells Kerinvale Comaudio, 361 Camboon road, Biloela.4715 Ph 0749922449 Mb 0409159932 Hm 0749922574 Fx 0749922767 www.kerinvalecomaudio.com.au ---Original Message--- From: DCFluX Date: 8/12/2009 11:08:15 AM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Sd174 uhf depends on the quality of the filter. I would try using the coax stub routine with RG-58 as the coax, that should be fairly wide. But look at it on a spectrum analyzer to be sure it will pass both signals. If not try building a 3-5 pole interdigital BPF. Those can tune 10MHz wide easy. On Mon, Dec 7, 2009 at 4:57 PM, Ian Wells kerin...@pacific.net.au wrote: Our TX and rx frequencies are 10 meg apart so a band pass filter may have problems giving good signal on both or should I tune the filter in the middle of the two frequencies Thank You ,Ian Wells Kerinvale Comaudio, 361 Camboon road, Biloela.4715 Ph 0749922449 Mb 0409159932 Hm 0749922574 Fx 0749922767 www.kerinvalecomaudio.com.au ---Original Message--- From: DCFluX Date: 8/12/2009 10:53:00 AM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Sd174 uhf The lack of a front end comes to mind. You basicly got there a hand held in a pretty box with a DB-9. Try adding a bandpass filter, such as a bandpass cavity, shorted coaxial stub or a interdigital bandpass filter. On Mon, Dec 7, 2009 at 3:42 PM, kerinvale kerin...@pacific.net.au wrote: Hi guys .I have a SD 174 maxon data radio and it seems to not be able filter other transmitters near by .The receiver opens up with squark noise even when programmed with ctcss .can anyone suggest whats possibly the problem is and possible fixes.I have one on site and it seems to be working perfectly but I know of two that are the same carn't filter signals nearby Thank You, Ian Wells, Kerinvale Comaudio, 361 Camboon Road.Biloela.4715 Ph 0749922449 or 0409159932 or 0749922574 www.kerinvalecomaudio.com.au . faint_grain.jpg
Re: [Repeater-Builder] Sd174 uhf
Yep its a mobile style 6 pack notch .would it be best with a 50 ohm dummy load or 50 ohm terminator.I thought about tuning it with notch of 473.200 on the side we want to use (between the sd174 and antenna) and notch of 517.025 on the unused side (the side that goes to the dummy load) Thank You ,Ian Wells Kerinvale Comaudio, 361 Camboon road, Biloela.4715 Ph 0749922449 Mb 0409159932 Hm 0749922574 Fx 0749922767 www.kerinvalecomaudio.com.au ---Original Message--- From: DCFluX Date: 8/12/2009 12:59:08 PM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Sd174 uhf dont know that number, but sounds like a mobile style 6 cavity notch duplexer, try the other side if the insertion loss is too high going one way and the opposite side should have a 50 ohm load on it On Mon, Dec 7, 2009 at 6:01 PM, Ian Wells kerin...@pacific.net.au wrote: Can one side of a 6mc450s diplexer be used as I have a few of them laying around .The first test I tried worked well with a 6mc450s with no interference but the 174 lost a lot of its TX power through it .from 3 watt it reduced it down to .5 watt .I can say I didn't have a 50 ohm terminator on the unused port which I should try next time and see how that's goes Thank You ,Ian Wells Kerinvale Comaudio, 361 Camboon road, Biloela.4715 Ph 0749922449 Mb 0409159932 Hm 0749922574 Fx 0749922767 www.kerinvalecomaudio.com.au ---Original Message--- From: DCFluX Date: 8/12/2009 11:51:22 AM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Sd174 uhf In that case use a single notch cavity to remove the 473 frequency in question. Circulators can be used in conjunction with shorted stubs and cavities to create super narrow notch filters, but this may be more than you need. http://books.google com/books?id=trJ6rhF0lU0Cpg=PA122dq=circulator+notch+filter#v=onepageq=cir ulator%20notch%20filterf=false On Mon, Dec 7, 2009 at 5:21 PM, Ian Wells kerin...@pacific.net.au wrote: How would a circulator or isolator work .The transmitt signal from the data radio could pass through to the antenna and the rx signal could be received from the antenna and The signal you wish to remove from the data radio radio on receive could be notched to the dummy load . The data radio radio frequencies are set for 507.025mhz rx 517.025mhz TX and the frequency that is interfering is on 473.200mhz. Thank You ,Ian Wells Kerinvale Comaudio, 361 Camboon road, Biloela.4715 Ph 0749922449 Mb 0409159932 Hm 0749922574 Fx 0749922767 www.kerinvalecomaudio.com.au ---Original Message--- From: DCFluX Date: 8/12/2009 11:08:15 AM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Sd174 uhf depends on the quality of the filter. I would try using the coax stub routine with RG-58 as the coax, that should be fairly wide. But look at it on a spectrum analyzer to be sure it will pass both signals. If not try building a 3-5 pole interdigital BPF. Those can tune 10MHz wide easy. On Mon, Dec 7, 2009 at 4:57 PM, Ian Wells kerin...@pacific.net.au wrote: Our TX and rx frequencies are 10 meg apart so a band pass filter may have problems giving good signal on both or should I tune the filter in the middle of the two frequencies Thank You ,Ian Wells Kerinvale Comaudio, 361 Camboon road, Biloela.4715 Ph 0749922449 Mb 0409159932 Hm 0749922574 Fx 0749922767 www.kerinvalecomaudio.com.au ---Original Message--- From: DCFluX Date: 8/12/2009 10:53:00 AM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Sd174 uhf The lack of a front end comes to mind. You basicly got there a hand held in a pretty box with a DB-9. Try adding a bandpass filter, such as a bandpass cavity, shorted coaxial stub or a interdigital bandpass filter. On Mon, Dec 7, 2009 at 3:42 PM, kerinvale kerin...@pacific.net.au wrote: Hi guys .I have a SD 174 maxon data radio and it seems to not be able filter other transmitters near by .The receiver opens up with squark noise even when programmed with ctcss .can anyone suggest whats possibly the problem is and possible fixes.I have one on site and it seems to be working perfectly but I know of two that are the same carn't filter signals nearby Thank You, Ian Wells, Kerinvale Comaudio, 361 Camboon Road.Biloela.4715 Ph 0749922449 or 0409159932 or 0749922574 www.kerinvalecomaudio.com.au . faint_grain.jpg
Re: [Repeater-Builder] Simulcasting of Repeaters
Hi guys .We have aprox 8 separate repeaters with links back to a central site allowing every thing to be broadcasted over all sites at the same time When one repeater feeds into another and then onto another then delay problems come into the picture. Thank You ,Ian Wells Kerinvale Comaudio, 361 Camboon road, Biloela.4715 Ph 0749922449 Mb 0409159932 Hm 0749922574 Fx 0749922767 www.kerinvalecomaudio.com.au ---Original Message--- From: MCH Date: 11/25/09 10:20:03 To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Simulcasting of Repeaters Most likely they dispatch in sequence - over one repeater than over the other. Joe M. Kris Kirby wrote: On Tue, 24 Nov 2009, Tim Ahrens wrote: But when the dispatcher was sending tones to both repeaters, isn't that simulcasting? That would be the only time that I could see any kind of issue, as the mobile/portable units wouldn't be transmitting on both at the same time. How is it that the dispatcher -- who is unable to alter the radio's settings by law -- is able to send two different PLs at the same time? -- Kris Kirby, KE4AHR Disinformation Analyst Yahoo! Groups Links -- No virus found in this incoming message. Checked by AVG - www.avg.com Version: 9.0.709 / Virus Database: 270.14.81/2524 - Release Date: 11/24/09 14:37:00 faint_grain.jpg
Re: [Repeater-Builder] Simplex Repeater
Try Syncro communications near Brisbane aus as they have simplex repeater information Thank You, Ian Wells, Kerinvale Comaudio, www.kerinvalecomaudio.com.au ---Original Message--- From: Kent Chong Date: 12/07/06 23:19:12 To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Simplex Repeater Good Day, We are using simplex radio (using single frequency for transmit and receive) and we would like to build a repeater. We would appreciate it if anybody could advise us how to do it. Best Regards, Chong Kwan Meng Meet your soulmate! Yahoo! Asia presents Meetic - where millions of singles gather
Re: [Repeater-Builder] Re: colinears as repeater antennas
I was talking to a person yesterday about foaming tyres and it seems after the foam expands it becomes hard so I would think it would a1 for making a colinear more resistant to windsso the joints carnt move .I do not however knowifthe problem is static buildup between the sections then foaming may not be a benefit .however I have seen commercial antennas from overseas and they seem to be made with poly foam inside where our antennas over here seem to be made with nothing to reinforce them for wind problems Thank You, Ian Wells, Kerinvale Comaudio, www.kerinvalecomaudio.com.au ---Original Message--- From: Dave VanHorn Date: 05/21/06 03:44:59 To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Re: colinears as repeater antennas I'm not a big fan of the fiberglass toothpick either. Put a 5 degree downtilt into radio mobile, and see what it does to your pattern over flat land.Now look at your toothpick, which is usually leaning a few degrees one way or the other due to wind. :-P I'd really like to change my antenna to the 4-bay that's sitting in the garage. Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/ YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
[Repeater-Builder] colinears as repeater antennas
Hi guys Recently i have found a problem with our6db 473.575 mhz repeater colinear antenna that is being used as a repeater antenna .From brand new it seemed to work well but over time and especially on windy days it will generate desense on our repeater(see previous posts on fading desense).We have otherVHF/uhf antennas used on otherrepeaters that exhibit the same problemfor 3-5 years wheresometimes the weaker signals use to come good and clear and then go bad with chopping and scratching .After a extremely windy day we found that one of the antennas was faulty and wasn't even getting out 5-10kms .After replacing it with a new antenna we have no desense even when windy when the others are just showing signs of desense when windy .So it seems that the antenna develop a bad jointover time with the bending of the whip .I am wondering has anyone tried to make the fiberglass more resistant to wind movement.possibly filling the tube with foam or some other method .One manufacturer here had done the tube in PVC instead of fiberglass Thank You, Ian Wells, Kerinvale Comaudio, www.kerinvalecomaudio.com.au YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
[Repeater-Builder] icom ic40s
Hi guys .I have a icom ic40s and it has been tuned for 476 mhz and I would Like to retune it to work upto 487 mhz .any sugestions? Thank You, Ian Wells, Kerinvale Comaudio, www.kerinvalecomaudio.com.au YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
RE: [Repeater-Builder] cp70-422n
Hi again guys. I checked the notches on eachtin and they were on frequencyand the markings were the correct way around.I removed the tee piece and checked the output after the 2nd tinandthe reading was 15watt so I recheck the output with the tee back inplace and still 7-8 watt output .I adjusted the db disks on the tins and also readjusted the pa section to give max output and ended up with 14-15 watt output with -110db signal with no chopping so it must have been a combination of these things. Thank You, Ian Wells, Kerinvale Comaudio, www.kerinvalecomaudio.com.au ---Original Message--- From: Ian Wells Date: 05/07/06 01:58:20 To: Repeater-Builder@yahoogroups.com Subject: RE: [Repeater-Builder] cp70-422n The notch caps have been modified by the tech to suit the 2.5 meg split so I hope it is ok but I hope to be checking with rfs Australia on Monday but I did talk to one of their guys on Friday and they said it would work ok with the 2.5 meg split but the real expert on them wasnt available till monday .Also I hope to checkit tomorrow to make sure the tech named the ports correctly and that they arent back to front . .The transmitter is a Philips fm828 Thank You, Ian Wells, Kerinvale Comaudio, www.kerinvalecomaudio.com.au ---Original Message--- From: Eric Lemmon Date: 05/07/06 01:43:50 To: Repeater-Builder@yahoogroups.com Subject: RE: [Repeater-Builder] cp70-422n Ian, The RFS/Celwave CP70-422N duplexer is a good product, but you might contact Celwave regarding the 2.5 MHz split you're using. Some duplexer designs don't necessarily work better with wider splits. The CP70 duplexer is specified for a 600 kHz split, and its loop settings might not be optimum for a 2.5 MHz split. Check with Celwave Tech Support for a definitive answer. Keep in mind that TX power measured into a resistive (dummy) load can be quite different when measured into a reactive (duplexer) load. Depending upon the make and model of your PA, it may be a good idea to experiment with different jumper cable lengths between the PA and the TX input on the duplexer, or install an impedance matching device (Z-matcher) at the PA output. 73, Eric Lemmon WB6FLY From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Ian WellsSent: Saturday, May 06, 2006 3:00 AMTo: Repeater-Builder@yahoogroups.comSubject: [Norton AntiSpam] [Repeater-Builder] cp70-422n Hi guys. I have the abovediplexer andI am concerned about the amount of power lossI am getting. I have 18watts going into the tx port on 78.1375MHz and only 7-8 watts coming out the antenna. Rx frequency is 80.6375MHz. It was tuned up by a firm here inQueensland Thank You, Ian Wells, Kerinvale Comaudio, www.kerinvalecomaudio.com.au YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
[Repeater-Builder] cp70-422n
Hi guys .I have the above diplexer and i am concerned about the amount of power loss i am getting .I have 18watts going into the tx port on 78.1375mhz and only 7-8 watts coming out the antenna .Rx frequency is 80.6375mhz .I t was tuned up by a firm here in queensland Thank You, Ian Wells, Kerinvale Comaudio, www.kerinvalecomaudio.com.au YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Re: [Repeater-Builder] cp70-422n
I found a link to the information and it says 1db loss and the measurements were taken into a wavteck service monitor Thank You, Ian Wells, Kerinvale Comaudio, www.kerinvalecomaudio.com.au ---Original Message--- From: Ellen Engle Date: 05/06/06 22:51:11 To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] cp70-422n Ian, Interestingly the RF Solutions web site does not list the insertion loss for the CP 70 series duplexers. Looking further thru the pdf I find that the Cp145 series at 144-174 has a 2 dB insertion loss. Even assuming 3dB loss in the cavities you have what appears to be excessive loss, but you do not say how the measurements were taken. Was the duplexerconnected to the antenna oradummy load? Using a dummy load will eliminate any reflected power from the antenna from affecting your measurement. Milt N3LTQ - Original Message - From: Ian Wells To: Repeater-Builder@yahoogroups.com Sent: Saturday, May 06, 2006 6:00 AM Subject: [Repeater-Builder] cp70-422n Hi guys .I have the above diplexer and i am concerned about the amount of power loss i am getting .I have 18watts going into the tx port on 78.1375mhz and only 7-8 watts coming out the antenna .Rx frequency is 80.6375mhz .I t was tuned up by a firm here in queensland Thank You, Ian Wells, Kerinvale Comaudio, www.kerinvalecomaudio.com.au No virus found in this incoming message.Checked by AVG Free Edition.Version: 7.1.392 / Virus Database: 268.5.4/332 - Release Date: 5/4/06 YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Re: [Repeater-Builder] cp70-422n
http://www2.rfsworld.com/RFS_Edition3/pdfs/Duplexers_755-776.pdf Thank You, Ian Wells, Kerinvale Comaudio, www.kerinvalecomaudio.com.au ---Original Message--- From: Ellen Engle Date: 05/06/06 22:51:11 To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] cp70-422n Ian, Interestingly the RF Solutions web site does not list the insertion loss for the CP 70 series duplexers. Looking further thru the pdf I find that the Cp145 series at 144-174 has a 2 dB insertion loss. Even assuming 3dB loss in the cavities you have what appears to be excessive loss, but you do not say how the measurements were taken. Was the duplexerconnected to the antenna oradummy load? Using a dummy load will eliminate any reflected power from the antenna from affecting your measurement. Milt N3LTQ - Original Message - From: Ian Wells To: Repeater-Builder@yahoogroups.com Sent: Saturday, May 06, 2006 6:00 AM Subject: [Repeater-Builder] cp70-422n Hi guys .I have the above diplexer and i am concerned about the amount of power loss i am getting .I have 18watts going into the tx port on 78.1375mhz and only 7-8 watts coming out the antenna .Rx frequency is 80.6375mhz .I t was tuned up by a firm here in queensland Thank You, Ian Wells, Kerinvale Comaudio, www.kerinvalecomaudio.com.au No virus found in this incoming message.Checked by AVG Free Edition.Version: 7.1.392 / Virus Database: 268.5.4/332 - Release Date: 5/4/06 YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
RE: [Repeater-Builder] cp70-422n
The notch caps have been modified by the tech to suit the 2.5 meg split so I hope it is ok but I hope to be checking with rfs Australia on Monday but I did talk to one of their guys on Friday and they said it would work ok with the 2.5 meg split but the real expert on them wasnt available till monday .Also I hope to checkit tomorrow to make sure the tech named the ports correctly and that they arent back to front . .The transmitter is a Philips fm828 Thank You, Ian Wells, Kerinvale Comaudio, www.kerinvalecomaudio.com.au ---Original Message--- From: Eric Lemmon Date: 05/07/06 01:43:50 To: Repeater-Builder@yahoogroups.com Subject: RE: [Repeater-Builder] cp70-422n Ian, The RFS/Celwave CP70-422N duplexer is a good product, but you might contact Celwave regarding the 2.5 MHz split you're using. Some duplexer designs don't necessarily work better with wider splits. The CP70 duplexer is specified for a 600 kHz split, and its loop settings might not be optimum for a 2.5 MHz split. Check with Celwave Tech Support for a definitive answer. Keep in mind that TX power measured into a resistive (dummy) load can be quite different when measured into a reactive (duplexer) load. Depending upon the make and model of your PA, it may be a good idea to experiment with different jumper cable lengths between the PA and the TX input on the duplexer, or install an impedance matching device (Z-matcher) at the PA output. 73, Eric Lemmon WB6FLY From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Ian WellsSent: Saturday, May 06, 2006 3:00 AMTo: Repeater-Builder@yahoogroups.comSubject: [Norton AntiSpam] [Repeater-Builder] cp70-422n Hi guys. I have the abovediplexer andI am concerned about the amount of power lossI am getting. I have 18watts going into the tx port on 78.1375MHz and only 7-8 watts coming out the antenna. Rx frequency is 80.6375MHz. It was tuned up by a firm here inQueensland Thank You, Ian Wells, Kerinvale Comaudio, www.kerinvalecomaudio.com.au YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
[Repeater-Builder] fading desense
Would anyone have some sugestions on reducing desense fading in and out on a repeater.some information sugests checking out the antenna system .any sugestions? Thank You, Ian Wells, Kerinvale Comaudio, www.kerinvalecomaudio.com.au YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Re: [Repeater-Builder] fading desense
2nd desense .i.e. Crackle fading in and out on the signal .Sometimes clear as and then crackle gets worst and then clears up. I am please of the help the guys came up with before in relation to my uhf and VHF repeaters .The problem turned out to be my mobile notch duplexer and it has now been replacedwith a TX/rx system band pass/reject diplexer which has stoped desense on both the VHF and uhf repeater now I have to sort out thecrackling that fades in and out Thank You, Ian Wells, Kerinvale Comaudio, www.kerinvalecomaudio.com.au ---Original Message--- From: Gareth Bennett Date: 05/04/06 20:52:35 To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] fading desense Hi Ian, Can you elaborate some more? Do you mean that your repeater Rx is experiencing a fading signal from a mobile. ... Or is your repeater sufferingfrom interference from possibly another repeater or local device (Desense). Cheers _ Gareth Bennett This e-mail is confidential, if you received this message in error, or youare not the intended recipient,please return it to the sender and destroy any copies.Thank you. - Original Message - From: Ian Wells To: Repeater-Builder@yahoogroups.com Sent: Thursday, May 04, 2006 10:37 PM Subject: [Repeater-Builder] fading desense Would anyone have some sugestions on reducing desense fading in and out on a repeater.some information sugests checking out the antenna system .any sugestions? Thank You, Ian Wells, Kerinvale Comaudio, www.kerinvalecomaudio.com.au YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Re: [Repeater-Builder] fading desense
All .at the moment we have clear days with low wind .it may come down to antennas swaying Thank You, Ian Wells, Kerinvale Comaudio, www.kerinvalecomaudio.com.au ---Original Message--- From: Gareth Bennett Date: 05/04/06 21:07:02 To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] fading desense Ian, What weather conditions does this happen in? _ Gareth Bennett This e-mail is confidential, if you received this message in error, or youare not the intended recipient,please return it to the sender and destroy any copies.Thank you. - Original Message - From: Ian Wells To: Repeater-Builder@yahoogroups.com Sent: Thursday, May 04, 2006 10:58 PM Subject: Re: [Repeater-Builder] fading desense 2nd desense .i.e. Crackle fading in and out on the signal .Sometimes clear as and then crackle gets worst and then clears up. I am please of the help the guys came up with before in relation to my uhf and VHF repeaters .The problem turned out to be my mobile notch duplexer and it has now been replacedwith a TX/rx system band pass/reject diplexer which has stoped desense on both the VHF and uhf repeater now I have to sort out thecrackling that fades in and out Thank You, Ian Wells, Kerinvale Comaudio, www.kerinvalecomaudio.com.au ---Original Message--- From: Gareth Bennett Date: 05/04/06 20:52:35 To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] fading desense Hi Ian, Can you elaborate some more? Do you mean that your repeater Rx is experiencing a fading signal from a mobile. ... Or is your repeater sufferingfrom interference from possibly another repeater or local device (Desense). Cheers _ Gareth Bennett This e-mail is confidential, if you received this message in error, or youare not the intended recipient,please return it to the sender and destroy any copies.Thank you. - Original Message - From: Ian Wells To: Repeater-Builder@yahoogroups.com Sent: Thursday, May 04, 2006 10:37 PM Subject: [Repeater-Builder] fading desense Would anyone have some sugestions on reducing desense fading in and out on a repeater.some information sugests checking out the antenna system .any sugestions? Thank You, Ian Wells, Kerinvale Comaudio, www.kerinvalecomaudio.com.au YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Re: [Repeater-Builder] fading desense
Thanks Paul .I will be trying it as soon as I get onsite again .from what I can gather the problem doesn't occur very often say once or twice a day but the sites havent much traffic on them at this time so it could be occuring more often but not when we using it when it happensI will find out more in due course Thank You, Ian Wells, Kerinvale Comaudio, www.kerinvalecomaudio.com.au ---Original Message--- From: Paul N1BUG Date: 05/04/06 22:04:55 To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] fading desense Ian Wells wrote: Would anyone have some sugestions on reducing desense fading in and out on a repeater.some information sugests checking out the antenna system .any sugestions? As has been suggested, try running the repeater only from batteries with all power supplies, charge controllers or the like off or disconnected. If you can be at the repeater site while the problem is occurring, listen to local audio from the repeater receiver while toggling the repeater transmitter off and on several times. Does the desense occur only when your transmitter is on? There are many possibilities either way, but in general... If it happens only with your transmitter on I would have a serious look at your antenna, feedline, mast, tower, duplexer for any problems. Make sure all connections and hardware is tight. It often only takes one loose bolt or guy wire to make trouble. Rusty/corroded hardware can be the culprit too. Try a different antenna if that is easily done. If the desense is still there with your transmitter off, I would suspect interference/noise from some nearby transmitter/device. I've been chasing a very similar problem that I believe I have narrowed down to a bad antenna. I'll find out when I replace it in a few days. Paul Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/ YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Re: [Repeater-Builder] Re: fading desense
Hey guys take a look at this writeup it might shed some light on my thoughts. http://cfa-www.harvard.edu/space_geodesy/BARGEN/publications/rx_mem.pdf The MorningStar is a high frequency pulse width modulation type regulator. Therefore, When the batteries are fully charged, the regulator diverts power directly to the system Buss which supplies power to the receiver. This type of regulation creates high frequency AC noise on the DC power supply. This causes the sensitive comparator circuits in some Trimble receivers to falsely trigger a low battery detect. Without the Low Battery Override option, older Trimble receivers (I.e. Some SSE models) stop logging data when A low battery detect occurs. The CLEAR key on the receiver needs to be physically Pressed for the receiver to resume logging data. The CSMS was designed to automatically Clear a low battery detect. Unfortunately, this function never operated properly. However, Trimble now offers a Low Battery Override option that allows the receiver to continue Logging data when a low battery detect is triggered. Even though the Low Battery Override allows a Trimble receiver to continue logging data When a low battery detect is triggered, it is best to have as clean a DC supply as possible. A dirty DC supply (AC noise) can cause many unforeseen problems that range from Power problems to communication problems. Curt measured AC noise ripple as high as 2V (RMS) at four BR stations. Solution I Replace the MorningStar regulator with a FlexCharge regulator. The FlexCharge is a low Frequency pulse regulator. This regulator has a charge divert that dissipates the high Frequency AC noise through a load to ground - The load would be a power resister. This Would relieve the problem of the AC noise on the DC power supply. In return, this would Relieve the problem of the Trimble receivers comparator circuit detecting a low battery. Solution II Modify the MorningStar regulator with a filtering CAPs to eliminate the high frequency Ripple. Thank You, Ian Wells, Kerinvale Comaudio, www.kerinvalecomaudio.com.au YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
[Repeater-Builder] repeater dense
Hi everyone.Thanks to everyone that submitted information about my vhf and uhf repeater setup.I tried a bandpass cavity tuned to 473.575 between the maxon transmitter and the mobile notch duplexer and it reduced my desense on both the 473.575 uhf and the 70.5875 meg repeaters so it seems I have found the problem .Checking out the duplexers on site ,the only differentduplexer was the mobile notch on the 473.575 transmitter as all the others are band pass,band reject so it will be replaced shortly with a bp/br . Thank You, Ian Wells, Kerinvale Comaudio, www.kerinvalecomaudio.com.au YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
[Repeater-Builder] kg209 battery charging
Hi guys .I have a kg209 battery pack tha has been repacked with new cells But when it is put into the battery charger .the charger just flashes red And it doesn't charge up.Does anyone have information on the battery pack Wiring so I can check on why it isnt working. Thank You, Ian Wells, Kerinvale Comaudio, www.kerinvalecomaudio.com.au YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
[Repeater-Builder] 678-R1
WaCOM Products Band pass band reject 450MHZ 4 cavity duplexerModel # 678-R1 Would anyone know ifthe above duplexer would tune to 473 and 478 mhz Thank You, Ian Wells, Kerinvale Comaudio, www.kerinvalecomaudio.com.au YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
RE: [Repeater-Builder] 678-R1
Thanks Eric.The on I am wondering about is up on ebay .I might look around for ar2 band and I will be assured it is correct Thank You, Ian Wells, Kerinvale Comaudio, www.kerinvalecomaudio.com.au ---Original Message--- From: Eric Lemmon Date: 04/15/06 11:54:03 To: Repeater-Builder@yahoogroups.com Subject: RE: [Repeater-Builder] 678-R1 Ian, Maybe, but maybe not. The Wacom WP-678-R1 is specified to cover 440 to 470 MHz. The R2 (Range 2) model covers 470 to 494 MHz, and the R3 model covers 488 to 512 MHz. Try it and see. It may work fine, but with less than optimum performance. If you retune it to 473/478 MHz and it doesn't have good isolation, try using shorter jumpers. 73, Eric Lemmon WB6FLY From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Ian WellsSent: Friday, April 14, 2006 7:16 AMTo: Repeater-Builder@yahoogroups.comSubject: [Norton AntiSpam] [Repeater-Builder] 678-R1 WaCOM Products Band pass band reject 450MHz 4 cavity duplexer Model # 678-R1 Would anyone know ifthe above duplexer would tune to 473 and 478MHz? Thank You, Ian Wells, Kerinvale Comaudio, www.kerinvalecomaudio.com.au YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
[Repeater-Builder] Maxon pm150
Following on previous posting I did get a chance to test my site with a spectrum Analyzer and on transmitt my two maxons are giving off a lot of harmonics which I feel is causing desense on my repeaters .One repeater is running a 6LD450S and the other is a 6mc450s Is it better to try a 6 inch bandpass cavity inline between the TX pa and the duplexers or change the duplexers to band pass/band reject Thank You, Ian Wells, Kerinvale Comaudio, www.kerinvalecomaudio.com.au Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
[Repeater-Builder] icom ic40g
Hi guys Has anyone been able to covert a icom ic40g to be able to Receive and transmit commercial channels like the ic40s. Thank You, Ian Wells, Kerinvale Comaudio, www.kerinvalecomaudio.com.au YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Re: Fw: Re: [Repeater-Builder] Frequency Spacing?
Ok Doug The frequency pairs are TX 473.575 RX 478.775MHZ TX 489.100 RX 483.900MHZ TX 70.300 RX 72.800 MHZ TX 70.5875 RX 72.0875 MHZ TX 70.725 RX 73.225MHZ Thank You, Ian Wells, Kerinvale Comaudio, www.kerinvalecomaudio.com.au ---Original Message--- From: Doug Bade Date: 04/07/06 01:24:28 To: Repeater-Builder@yahoogroups.com Subject: Re: Fw: Re: [Repeater-Builder] Frequency Spacing? Ian; I do not think you suppled enough info for us to answer that. While isolators are always a good idea at sites where there are multiple transmitters, the specifics of why in the preceding discussion is for specific problems due to exact offset paired repeaters in the same site working in close proximity with probable antenna coupling contributing to potential intermod as a resultisolators are probably mandatory in that case. That specific site set of conditions as was being discussed may have no relevance to you unless your pairs all have same TX-RX offset, and the transmitters are capable of cross coupling energy among themselves and thus create intermod for your receiver(s). 70 Mhz isolators will not be cheap... so I would not jump there without proper diagnostics... You did not tell us what your receive frequencies are, or are these simplex stations??? 70 mhz is not a repeater band we recognize here, I am unaware of your licensing schemes for this band in Australia Same question applies for your uhf... specifics would be helpful for analysis of your exact inputs and outputs...at 470 here we use 3 mhz offset... at 450 we use 5 mhz offset... Rules vary by locale Doug KD8B At 01:03 PM 4/5/2006, you wrote: I have several repeaters on one tower .2 uhf commercial 473.575 and 489.10mhz and 3 VHF 70meg repeaters70.300mhz,70.5875,70.725mhz and i am having desense issues on both70.5875mhz and also 473.575.Would i also require installing isolators on each of these repeaters..any thoughts? Thank You, Ian Wells, Kerinvale Comaudio, http://www.kerinvalecomaudio.com.au/www.kerinvalecomaudio.com.au ---Original Message--- From: mailto:[EMAIL PROTECTED]gt;[EMAIL PROTECTED] Date: 04/06/06 01:32:28 To: mailto:Repeater-Builder@yahoogroups.comgt;Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Frequency Spacing? At 4/5/2006 07:27, you wrote: How close, frequency spacing wise, can a couple of VHF (2 meter) repeaters in the same equipment room on the same short tower be made to work well without much trouble or extra expense? How does 45 Kc. with same 600 Kc. offset sound? What will work this close and what won't? If the offset is the same, closer is actually better since the duplexer of each repeater will protect each RX from both TXs, both in RX notching of TX TX noise suppression at the RX freq.However, isolators on both TXs are a MUST, otherwise you will 2A-B mix in both TXs end up TXing 45 kHz above below your two outputs.Try to keep the two antennas as far apart as possible.If you can't separate the antennas much, you might need dual isolators on both TXs.I've seen two TXs 20 kHz apart at the same site mix strong enough to be heard 10 miles away, even though both systems had single isolators. When dealing with close-freq. TX spacing, equipment shielding seems to be more important for some reason.Stay away from converted mobiles as repeaters, or plan on using a separate RX in an RF-tight box with EMI feedthroughs. Bob NO6B Yahoo! Groups Links http://groups.yahoo.com/group/Repeater-Builder/http://groups.yahoo.com/group/Repeater-Builder/ mailto:[EMAIL PROTECTED]gt;[EMAIL PROTECTED] http://www.incredimail.com/index.asp?id=96846 FREE emoticons for your email! click Here! -- YAHOO! GROUPS LINKS *Visit your group "http://groups.yahoo.com/group/Repeater-BuilderRepeater-Builder" on the web. * *To unsubscribe from this group, send an email to: * mailto:[EMAIL PROTECTED]gt;[EMAIL PROTECTED] * *Your use of Yahoo! Groups is subject to the http://docs.yahoo.com/info/terms/Yahoo! Terms of Service. -- Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/ YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Fw: Re: [Repeater-Builder] Frequency Spacing?
I have several repeaters on one tower .2 uhf commercial 473.575 and 489.10mhz and 3 VHF 70meg repeaters 70.300mhz,70.5875,70.725mhz and i am having desense issues on both 70.5875mhz and also 473.575.Would i also require installing isolators on each of these repeaters..any thoughts? Thank You, Ian Wells, Kerinvale Comaudio, www.kerinvalecomaudio.com.au ---Original Message--- From: [EMAIL PROTECTED] Date: 04/06/06 01:32:28 To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Frequency Spacing? At 4/5/2006 07:27, you wrote: How close, frequency spacing wise, can a couple of VHF (2 meter) repeaters in the same equipment room on the same short tower be made to work well without much trouble or extra expense? How does 45 Kc. with same 600 Kc. offset sound? What will work this close and what won't? If the offset is the same, closer is actually better since the duplexer of each repeater will protect each RX from both TXs, both in RX notching of TX TX noise suppression at the RX freq.However, isolators on both TXs are a MUST, otherwise you will 2A-B mix in both TXs end up TXing 45 kHz above below your two outputs.Try to keep the two antennas as far apart as possible.If you can't separate the antennas much, you might need dual isolators on both TXs.I've seen two TXs 20 kHz apart at the same site mix strong enough to be heard 10 miles away, even though both systems had single isolators. When dealing with close-freq. TX spacing, equipment shielding seems to be more important for some reason.Stay away from converted mobiles as repeaters, or plan on using a separate RX in an RF-tight box with EMI feedthroughs. Bob NO6B Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/ YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
[Repeater-Builder] tx815 philips
Hi guys .I have a rx815 hooked upto a TX 815 and I am having a problem With the receiver regulator shuting down .It isnt a curent problem as I Have tested it but it is a rf problem because where the transmitter is On a noncrystal channel the two work perfectly but when it is on the TX Crystal channel and the receiver receives a signal and the transmitter kicks in Then sometimes the receiver goes out and we have to reset the power Switch to turn the receiver on again.any sugestions.thanks Ian Thank You, Ian Wells, Kerinvale Comaudio, www.kerinvalecomaudio.com.au YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Re: [Repeater-Builder] Re: desnse on community sites
Hi Ian, Thanks skip A lot of us in the US have to sit back and look at the information you wrote and do the translation to values we have here in the US. (... he says laughing to himself) There are a hundred plus questions that need to be asked to get the best picture of what's going on with your repeater system. Your mention of the "rx scratch" without a transmitter On is key issue. You don't say how much other rf is in the area?... at other sites?... or what else is in the area. The nearest repeaters near my tower are over 1km away A few things come to mind first.. First the antennas are omnis and have you tried changing them around to the other repeaters? Looking into trying that Do the antennas have a true DC ground return path? Are the antennas fiberglass radomes (covers) or are they The exposed metal type construction? Fiberglass The notch pass duplexers might be a larger issue if you hadn't said the tx doesn't have to be on for the problem to show up. But the duplexers might not have a true dc ground path through the probes/loops.You might check for That. When B repeater is operating and one of the other repeaters come online then it doesn't affectB's transmission and vise versa.The scratch seems to only affect a particular repeater when its operating .It doesnt seem to be a intermod / interference between repeater problem With one of our rf companies over here advise to go to band pass,band reject over notch diplexers when on community sites.The 2 vhf repeaters that i advised (A+B) have notch tins (one connection in top) but also have a small hole in top with a tunning cap notch .The diplexer feedlines are rg214 on both of these repeaters as the new diplexer on D are N connectors direct to RG223 patch leads to the repeater and it seems to work ok Does the feedline/coax have grounding kits on them? Not yet but looking into it Regarding your tower leg clean up... many people will make up ground braid - short jumper straps that screw into the tower legs over the original tower joints. There's a lot About doing that well out of the scope of this chat, but it's another way of reducing problems in older tower systems. ok good idea Static build up in wind might mean the antennas, duplexer or various combinations of...might not have a dc path (aka dc bleed path) to ground. Static problems in dry or drier weather conditions would be a possible indication of this problem. One thought that did come to mind is that when one of these repeaters operate the antennas near it could be getting enough rf to excite something and generate sparks and could get more problems as the antennas move in the wind as i did read somewhere vertical fiberglass antennas sometimes break elements . but not exclusive to.If the notch duplexers and the antenan(s) don't go to dc/rf/station/system ground, you could swap things around (antenna/duplexer type) to sort through the causes. Your turn... skipp "Ian Wells" [EMAIL PROTECTED] wrote: Hi guys .I have a small problem that i have been trying to sort out for a while now .I have 5 repeaters operating on one of my sites 3 vhf low band and 2 uhf band.The frequencies are as follows VHF A-TX 70.300MHZ RX 72.800MHZ fitted with 4 1.5 meterby 4 inch meter tins-most likely a notch diplexer3db colinear ant FM828E B-TX 70.5875MHZ RX 73.0875MHZ fitted with 4 1.5 meter by 4 inch meter tins-most likely a notch diplexer3db colinearant FM828E C-TX 70.725MHZ RX 73.225MHZfitted with a new band pass/band reject possibly a varinotch 3db colinear antFM828E UHF D- TX 473.575 RX 478.775MHZ fitted with mobile notch diplexer 6mc450s6db colinear ant MAXON PM150/SM4450SC E- TX 489.1MHZ RX 483.900MHZfitted with 6ld450s diplexer 6db colinear ant MAXON PM150/SM4450SC All coaxes are Heliax from antennas to Diplexers with N connectors Interconnecting cables between diplexers and radiosare rg223u A and B are a 1.5 meter apart with C in the middle All antennas are mountedaprox 50 cms or more away from C or each other . D and Ehave a 1.5 meter between them ie- D AC B E I am at times having desense (ie scratch ) especially in windy weather occuring on repeaters B and D.It doesn't seem to affect the desense wether the transmitters are txing or not .There isnt any problem of the repeaters affecting each other ,they all work great just the problem of scratch coming and going .A,C and E do get scratch on occasion but no where as bad as D and B.D and B works great sometimes (clear with no scratch)and then reception will slowly develope major scratch and then slowly clear up -possibly electrostatic or wind moving the antennas ?.I have been fixing loose bolts on the windmill tower to stop problems incase of tower twist and this affecting service.I am wondering if there are any futher sugestions . Thank You, Ian Wells, Kerinvale Comaudio, www.kerinvalecomaudio.com.au Yahoo! Groups Links * To visit your group on the web, go to: htt
[Repeater-Builder] desnse on community sites
Hi guys .I have a small problem that i have been trying to sort out for a while now .I have 5 repeaters operating on one of my sites 3 vhf low band and 2 uhf band.The frequencies are as follows VHF A-TX 70.300MHZ RX 72.800MHZ fitted with 4 1.5 meter by 4 inch meter tins-most likely a notch diplexer 3db colinear ant FM828E B-TX 70.5875MHZ RX 73.0875MHZ fitted with 4 1.5 meter by 4 inch meter tins-most likely a notch diplexer3db colinear ant FM828E C-TX 70.725MHZ RX 73.225MHZ fitted with a new band pass/band reject possibly a varinotch 3db colinear ant FM828E UHF D- TX 473.575 RX 478.775MHZ fitted with mobile notch diplexer 6mc450s 6db colinear ant MAXON PM150/SM4450SC E- TX 489.1MHZ RX 483.900MHZ fitted with 6ld450s diplexer 6db colinear ant MAXON PM150/SM4450SC All coaxes are Heliax from antennas to Diplexers with N connectors Interconnecting cables between diplexers and radios are rg223u A and B are a 1.5 meter apart with C in the middle All antennas are mounted aprox 50 cms or more away from C or each other . D and E have a 1.5 meter between them ie- D A C B E I am at times having desense (ie scratch ) especially in windy weather occuring on repeaters B and D.It doesn't seem to affect the desense wether the transmitters are txing or not .There isnt any problem of the repeaters affectingeach other ,they all work great just the problem of scratch coming and going .A,C and E do get scratch on occasion but no whereas bad as D and B.D and B works great sometimes (clear with no scratch)and then reception willslowlydevelope major scratch and then slowly clear up -possibly electrostatic or wind moving the antennas ?.I havebeen fixing loose bolts on the windmill tower to stop problems incase of tower twist and this affecting service.I am wondering if there are any futhersugestions . Thank You, Ian Wells, Kerinvale Comaudio, www.kerinvalecomaudio.com.au YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Re: [Repeater-Builder] very close frequencies seperation
These sites are10-15kms from the nearest houses in rual country .I have a separate site to site licence that isstill valid that I don't use any more and I am looking at utilizing it instead of thediagram I sent through before.I am having no worries with my remote sites to the central hub site .I am only having problems with 2 sites that hav the transmitt frequencies 100-375khz away from the central hub signal which is wipeing it .But if i can use this other frequency that i have it will them be upto 15meg away from the sites transmitt frequency and shouldnt affect it
Thank You,
Ian Wells,
Kerinvale Comaudio,
www.kerinvalecomaudio.com.au
---Original Message---
From: AdamVazquez Kb2Jpd
Date: 03/28/06 23:38:39
To: Repeater-Builder@yahoogroups.com; Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] very close frequencies seperation
Usually, you use a backbone frequency on a different band (in the US 220 Mhz up) or a dedicated dc controlled phone line so you can have the desired linking.
It is difficult, but not impossible, to link on the same band. Is that you will thinking of implementing.?
Adam Kb2Jpd
-Original Message-
From:"Ian Wells" [EMAIL PROTECTED]
Subj:[Repeater-Builder] very close frequencies seperation
Date:Mon Mar 27, 2006 4:21 pm
Size:2K
To:Repeater-Builder@yahoogroups.com
v\:* {behavior:url (#default#vml);}v\:* { BEHAVIOR: url (#default#vml) } Hi guys .I am trying to receive 473.575mhz from a 25 watt repeater ,line of sight, 50kms away and and retransmitt it on 473.200 at 25 watt on another site.The transmitt antenna is a 6db vertical ,9 meters above ground and the rx antenna is a 6 db uhf beam 1-2 meter above ground ,aimed at the 473.575 site Is it possible to notch out frequencies going into a receiver that are275 or 375 khz off a uhfreceive signal or is it going to be too close to filter outthe TX .
Thank You,
Ian Wells,
Kerinvale Comaudio,
www.kerinvalecomaudio.com.au
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Re: [Repeater-Builder] Re: very close frequencies seperation
Thanks skip. Thank You, Ian Wells, Kerinvale Comaudio, www.kerinvalecomaudio.com.au ---Original Message--- From: skipp025 Date: 03/29/06 02:38:29 To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Re: very close frequencies seperation "Ian Wells" [EMAIL PROTECTED] wrote: Hi guys .I am trying to receive 473.575mhz from a 25 watt repeater ,line of sight , 50kms away and and re-transmit it on 473.200 at 25 watt on another site.The transmitt antenna is a 6db vertical ,9 meters above ground and the rx antenna is a 6 db uhf beam 1-2 meter above ground ,aimed at the 473.575 siteIs it possible to notch out frequencies going into a receiver that are 275 or 375khz off a uhf receive signal or is it going to be too close to filter out the TX . Yes you can, but it won't be easy. You need as much antenna system isolation as possible, a lot of how the antennas perform is part of the equation, the notch Q (quality, number and type), the transmitter sideband noise and the quality of the receiver front end (and 3rd order performance) are all factors in how well the link system plays. In addition to notch cavities, you'll probably need band pass cavities on both the receiver and the transmitter. RF leakage in various parts of the system can also cause desense.You might also bump that UHF Beam up in size (number of elements). cheers, skipp Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/ YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
[Repeater-Builder] very close frequencies seperation
Hi guys .I am trying to receive 473.575mhz from a 25 watt repeater ,line of sight, 50kms away and and retransmitt it on 473.200 at 25 watt on another site.The transmitt antenna is a 6db vertical ,9 meters above ground and the rx antenna is a 6 db uhf beam 1-2 meter above ground ,aimed at the 473.575 site Is it possible to notch out frequencies going into a receiver that are275 or 375 khz off a uhfreceive signal or is it going to be too close to filter outthe TX . Thank You, Ian Wells, Kerinvale Comaudio, www.kerinvalecomaudio.com.au YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Re: [Repeater-Builder] Re: crackle in a repeater tower
Thanks randy .free standing 9 meter windmill Thank You, Ian Wells, Kerinvale Comaudio, www.kerinvalecomaudio.com.au ---Original Message--- From: wb8art Date: 03/23/06 00:24:10 To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Re: crackle in a repeater tower Ian, Are the guys on this tower or is it self support?We had a simular problem with stranded guys. Changed the guys to Phillystran to solve it. Randy --- In Repeater-Builder@yahoogroups.com, "Ian Wells" [EMAIL PROTECTED] wrote: Hi guys .Is there a way that you can locate loose bolts or fittings in a tower by having a transmitter txing on the tower and checking the tower with a spectrum anayzler with a beam for interference on other frequencies .I have a tower that crackles through VHF repeaters that are operating on the site and sometimes it affects uhf repeaters on site as well but i still havent found where it is coming from .It has to be something loose as it is worst on windy days any sugestions would be great Thank You, Ian Wells, Kerinvale Comaudio, www.kerinvalecomaudio.com.au Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/ YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Re: [Repeater-Builder] crackle in a repeater tower
Thanks guys for the returns .With earthing the coaxes does it help eliminate the static from the tower Thank You, Ian Wells, Kerinvale Comaudio, www.kerinvalecomaudio.com.au YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Re: [Repeater-Builder] crackle in a repeater tower
Thanks I will look into it Thank You, Ian Wells, Kerinvale Comaudio, www.kerinvalecomaudio.com.au ---Original Message--- From: [EMAIL PROTECTED] Date: 03/23/06 02:19:58 To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] crackle in a repeater tower I will not declare for a matter of fact that this will solve your problem, but it cannot hurt. Each section of the tower and any antennas should all be tied into the site grounding system. If EVERYTHING at the site is at the same ground potential, preferably a buried grid, resilience to lightning is dramatically improved. Even fences and propane tanks should be considered in your grounding system. Sometimes it's all in the details. YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Re: [Repeater-Builder] crackle in a repeater tower
We are using rg223 as fly leads and heliax up to the antennas .I feel it is a loose bolt in the tower and it moves when the tower twists .apart from checking each bolt .What I was wondering with earthing the coax at the top and bottom of the tower was if it tends to improve the shielding of the heliax so it ignores Any static on the way up the tower .One other thing I might be overlooking is one repeater on site had its ant damaged due to lightning and it could be the cause of the static but the users of that repeater don't find any problems with their reception at all .Its affecting everyone else though which is strange . Thank You, Ian Wells, Kerinvale Comaudio, www.kerinvalecomaudio.com.au ---Original Message--- From: Tom Manning Date: 03/23/06 00:51:53 To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] crackle in a repeater tower KE4ADV What you propose should be practice and not an experiment. It is just good practice to ground the antenna mast, coax and equipment to a common ground. Otherwise where I am located in West Florida the setup might last a month due to lightning. You should also use double shielded coax or hardline for your coax run and in your equipment. 73's de Tom Manning, AF4UG YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Re: [Repeater-Builder] crackle in a repeater tower
Yesthere is3 VHF 70mhz duplex repeaters and 2 470mhz duplex repeaters on the site. 2 of the VHF repeaters have a problem with the crackles and the repeater with the damaged ant doesn't have any where near the problem however their coverage range isn't as good as the other two (good ants )so maybe that's why it doesn't get affected as much .If I replace this ant with a new one they will proberly get the same problem . Thank You, Ian Wells, Kerinvale Comaudio, www.kerinvalecomaudio.com.au ---Original Message--- From: Mike Morris WA6ILQ Date: 03/23/06 09:46:47 To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] crackle in a repeater tower At 01:57 PM 03/22/06, you wrote: We are using rg223 as fly leads and heliax up to the antennas .I feel it is a loose bolt in the tower and it moves when the tower twists .apart from checking each bolt .What I was wondering with earthing the coax at the top and bottom of the tower was if it tends to improve the shielding of the heliax so it ignores Any static on the way up the tower .One other thing I might be overlooking is one repeater on site had its ant damaged due to lightning and it could be the cause of the static but the users of that repeater don't find any problems with their reception at all .Its affecting everyone else though which is strange.This article may be of interest: http://www.repeater-builder.com/antenna/cracking.htmlIs that lightning-damaged antenna used in a duplex situation? If not, then the users of it won't see a problem.Some local sites use a shared receive antenna and separate transmit antennas.Our prime UHF system uses a single 406-512MHz antenna at 120' feeding a Sinclair window filter - 5 or 6 separate passbands that feed different repeaters, 440-446MHz for amateur receive, the rest in commercial bands all the way up to 507mhz. The commercial repeater transmitters are combined, 5 to each antenna. Some of the amateur repeater transmitters are combined, some are on their own antennas. A while back one of the commercial combined antennas developed an intermittent crack and it was a real pain to find... Thank You,Ian Wells,Kerinvale Comaudio,www.kerinvalecomaudio.com.auNo problem, Ian. Please let us know what you find...Mike Morris WA6ILQ YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
[Repeater-Builder] crackle in a repeater tower
Hi guys .Is there a way that you can locate loose bolts or fittings in a tower by having a transmitter txing on the tower and checking the tower with a spectrum anayzler with a beam for interference on other frequencies .I have a tower that crackles through VHF repeaters that are operating on the site and sometimes it affects uhf repeaters on site as well but i still havent found where it is coming from .It has to be something loose as it is worst on windy days any sugestions would be great Thank You, Ian Wells, Kerinvale Comaudio, www.kerinvalecomaudio.com.au YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Re: [Repeater-Builder] internet via uhf commercial radio
Hi kevan , There is a problem with the wireless group as i tried to post a message the other day and it came up with a error. Thank You, Ian Wells, Kerinvale Comaudio, www.kerinvalecomaudio.com.au ---Original Message--- From: Kevin Custer Date: 03/12/06 22:50:44 To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] internet via uhf commercial radio Has anyone setup a wireless internet community where a group of users can use uhf radios and/or repeaters to communicate with a base station to access the internet instead of phone lines http://groups.yahoo.com/group/Wireless-Internet/ and what types of speeds can you expect?. I have a small wireless set-up that feeds myself and several others. Speeds depend on what equipment is used and how many hops it takes to get to the source of the internet. are there any good pages on this type of setup? Lots... Google "wireless internet" Kevin Custer www.kc-wireless.com Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/ YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Re: [Repeater-Builder] internet via uhf commercial radio
Thanks kevin Thank You, Ian Wells, Kerinvale Comaudio, www.kerinvalecomaudio.com.au ---Original Message--- From: Kevin Custer Date: 03/12/06 22:50:44 To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] internet via uhf commercial radio Has anyone setup a wireless internet community where a group of users can use uhf radios and/or repeaters to communicate with a base station to access the internet instead of phone lines http://groups.yahoo.com/group/Wireless-Internet/ and what types of speeds can you expect?. I have a small wireless set-up that feeds myself and several others. Speeds depend on what equipment is used and how many hops it takes to get to the source of the internet. are there any good pages on this type of setup? Lots... Google "wireless internet" Kevin Custer www.kc-wireless.com Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/ YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
[Repeater-Builder] internet via uhf commercial radio
Has anyone setup a wireless internet community where a group of users can use uhf radios and/or repeaters to communicate with a base station to access the internet instead of phone lines and what types of speeds can you expect?.are there any good pages on this type of setup? Thank You, Ian Wells, Kerinvale Comaudio, www.kerinvalecomaudio.com.au YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Re: [Repeater-Builder] Re: repeater solar
Thanks skip.I havent put the repeaters through the low voltage disconnect as yet but I will do in future.picture 1 is the way it is setup now and I have amp gauges on the input of the isolater as i also have a wind generator i forgot to mention but it doesnt get enough wind speed when I have seen it to produce power so i am relying on solar..All the repeaters thank god are setup with 90 sec timmers on the tx overs but i will certainly look into better ways to setup this up. Thank You, Ian Wells, Kerinvale Comaudio, www.kerinvalecomaudio.com.au ---Original Message--- From: skipp025 Date: 03/11/06 02:58:05 To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Re: repeater solar Depends on your choice of priorities really. Unless you have a way to measure the power consumed by priority vs non priority loads or total power consumed you'd better stay with keeping the battery banks as different circuits. You should/must have a low voltage disconnect to keep from killing your batteries off with excessive deep dis-charges. A poor mans way to determin tx power used is to make some type of an electronic run/tx timer, which could provide a max on/tx time enable over x-period of time or related to the reported battery bank voltage. Another cute trick would be to drop the tx power output at x-battery voltage or x-tx run-time within some value of time (24 hours). cheers, skipp "Ian Wells" [EMAIL PROTECTED] wrote: Hi guys .I have a quick question .The batteries in this question are optima yellow tops all 4 are under 12 months old. We have 5 vhf and uhf repeaters running at one site.One is setup on its 2 own batteries and the others are all supplied power from 2 other batteries The 5 are all supplied from one array of 2 60 watt panels and 1 80 watt panel which is fed into a battery isolator which feeds 2 sunsolar regulators which charges the 2 battery banks .The solar array is shortly about to have 2 80 watt panels added to the array.The one repeater is going perfectly operating TX most of the day and night (i.e. Taxi repeater)without any worries 13.4 voltbut the other repeaters that are on the other bank have been drained out (check out battery1).These 4 repeaters gets less use than the taxi setup but have drained the 2 batteries dry .My question is should i split the battery banks up so there are only 2 repeaters on 2 batteries (battery2) This would help if 2 batteries on the same bank would fail this would only take out 2 repeaters and not 4 the way it is setup in battery1 any sugestions ? Thank You, Ian Wells, Kerinvale Comaudio, www.kerinvalecomaudio.com.au Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/ YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
[Repeater-Builder] email
Hi guys.The following email was just received by me .Anyone else received this .? The following is an email sent to you by an administrator of "repeater-builders.com.au". If this message is spam, contains abusive or other comments you find offensive please contact the webmaster of the board at the following address: [EMAIL PROTECTED] Include this full email (particularly the headers). Message sent to you follows: Hi all Justa note that in about 30 minites the servers will be down for about 7 days due to me moving :) Please come back as I do have a few new things to share when I get back online Regards M I dont know where the website is or who has repeater-builders.com.au Thank You, Ian Wells, Kerinvale Comaudio, www.kerinvalecomaudio.com.au YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Re: [Repeater-Builder] mobile diplexers
Thanks bob that's what I feel and complements my tuning where I tuned it for max att at each frequency and the result is a clear signal but it still brings questions about the other diplexers I had tuned elsewhere that show some desense.maybe they tuned them for min insertion loss as well as isolation Thank You, Ian Wells, Kerinvale Comaudio, www.kerinvalecomaudio.com.au ---Original Message--- From: Bob M. Date: 02/22/06 09:00:40 To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] mobile diplexers Mobile duplexers (units that combine receiving and transmitting to operate with one antenna) are usually notch-tuned, so the preferred way to tune them is to reject the other frequency. In other words, you tune the receive side to reject or notch the transmit frequency, and you tune the transmit side to reject or notch the receive frequency. There's not much you can do about insertion loss. Whatever you end up with is usually a result of the way the duplexer is designed or manufactured. Cable lengths can have some effect, and might be different on units covering 420-450 MHz vs 440-470 MHz. I think your tuning method is fine and you should go for maximum attenuation of the opposite frequency. It's easy to tune them backwards; I usually write both the pass and reject frequencies on the duplexer to make sure I'm the proper half to reject the correct frequency. There is lots of duplexer tuning information over on the repeater-builder.com web site. Always something to learn there. 60-70dB rejection is about right for a UHF duplexer. That much may not be enough for a repeater, but it's usually enough for a 25-45 watt mobile radio. If the equipment is working properly, you should not have desense on ANY signal, regardless of how weak it is. This would be down to -127dBm (0.1uV) which is usually a receiver's threshold of hearing. Bob M. == --- Ian [EMAIL PROTECTED] wrote: Hi guys .I was wondering when retuning uhfmobile diplexers is it better to tune for the notch or insersion loss.I have had a few diplexers tuned by others and theystill have a small amount of desense occuring .When i received a new rfs diplexer the other day ,in the instructions i have to tune each side to notch the opposite frequency out and then check to make sure the loss was within limits .On the wavetec 4031 i mad the dips exactly on the frequency ie on the rx side max attenuation on the tx frequency and the opposite for the tx side giving me at least 58 or more db notch on both sides.testing it on a repeater i get no desense on weak signals -110db but each of my repeaters were done differently max att on the tx frequency on the rx side and on the tx side the dip isnt on the rx frequency ,its about half way up one side of the dip and these diplexers in use are showing desense on -110db signals to the extent i had to add a bp cavity inline to lower the desense.Can anyone sugest what is the best method of tuning notch mobile diplexers .thanks ian __ Do You Yahoo!? Tired of spam?Yahoo! Mail has the best spam protection around http://mail.yahoo.com Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/ YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
[Repeater-Builder] Re: Loss through adaptors:
Can you also have problems with desense with fittings being hand tight between the diplexer and antenna Thank You, Ian Wells, Kerinvale Comaudio, www.kerinvalecomaudio.com.au YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
RE: [Repeater-Builder] cable length
I thank you for the response .I don't usually set the TX cable at one length andit varies at all my sites .most of the sites may be around aprox 1 meteror so
Thank You,
Ian Wells,
Kerinvale Comaudio,
www.kerinvalecomaudio.com.au
---Original Message---
From: Eric Lemmon
Date: 01/24/06 15:06:34
To: Repeater-Builder@yahoogroups.com
Subject: RE: [Repeater-Builder] cable length
Ian,
The cable length is more important on the TX side than on the RX side. However, since the impedances of the power amplifier output and of the duplexer TX input are seldom known with any certainty, it is impossible to know in advance what length that jumper cable should be. The TX jumper cable acts as a linear impedance transformer, depending upon its length in relation to the wavelength of the TX carrier. The chances that any random length of cable will result in a perfect match are slim.
The method I use is to make up a cable that fits the installation neatly, and then measure the power going to the antenna from the duplexer with a Bird wattmeter. Then I install an impedance matcher ("Z-matcher") at the output of the PA. If tuning the Z-matcher makes a significant improvement in the forward power, I know that the jumper cable is probably not the ideal length. I now have two choices: I can start experimenting with longer and shorter cables until I find the optimum length, or I can set the Z-matcher for the optimum setting and close up the cabinet, turn out the lights, and head home. Opinions vary greatly on this issue...
73, Eric Lemmon WB6FLY
From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Ian WellsSent: Monday, January 23, 2006 4:34 PMTo: Repeater-Builder@yahoogroups.comSubject: [Norton AntiSpam] [Repeater-Builder] cable length
Is it nessary to have the correct length coax from the diplexer to the rx and tx or is there a formular that can show the correct length .I am currently using RG223 coax for these links
Thank You,
Ian Wells,
Kerinvale Comaudio,
www.kerinvalecomaudio.com.au
YAHOO! GROUPS LINKS
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[Repeater-Builder] adding a notch to bandpass cavity
Has anyone ever added a notch to a band pass cavity so it filters one frequency and notches another frequency in the samecavity tin.I am looking at filtering one rx frequency through the bandpass cavity but notch a TX frequency5.2 meg away from the first frequency .any sugestions ? Thank You, Ian Wells, Kerinvale Comaudio, www.kerinvalecomaudio.com.au YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Re: [Repeater-Builder] adding a notch to bandpass cavity
Simply the bandpass cavities areworking wellwith my mobile diplexers cleaning up the little bit of desense I was getting on sites but there is still a little bit of desense occuring with very low signals and I was wondering if I could modify the cavities I have in place now to also notch the TX frequency to give even better isolation than the bandpass cavity on its own Thank You, Ian Wells, Kerinvale Comaudio, www.kerinvalecomaudio.com.au ---Original Message--- From: Gareth Bennett Date: 01/23/06 21:28:53 To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] adding a notch to bandpass cavity Hi Ian, What exactly is your problem with filtering? It reads likeIt seems that you trying to achieve a steep reject notch for your associated Tx whilst rejecting any outside frequency from your Rx? Are you suffering desense on your site? I is your site shared by other users, and if so what are the frequencies in use? Any conventional "Notch" filter can give you in excess of 20dB of rejection at 5 Meg separation with minimal loss at your Rx frequency. In essence all notch filters are really a band pass-band reject filterwith careful calculation. Whatsthe temp in OZ at the moment? Regards _ Gareth Bennett This e-mail is confidential, if you received this message in error, or youare not the intended recipient,please return it to the sender and destroy any copies.Thank you. - Original Message ----- From: Ian Wells To: Repeater-Builder@yahoogroups.com Sent: Monday, January 23, 2006 11:07 PM Subject: [Repeater-Builder] adding a notch to bandpass cavity Has anyone ever added a notch to a band pass cavity so it filters one frequency and notches another frequency in the samecavity tin.I am looking at filtering one rx frequency through the bandpass cavity but notch a TX frequency5.2 meg away from the first frequency .any sugestions ? Thank You, Ian Wells, Kerinvale Comaudio, www.kerinvalecomaudio.com.au YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Re: [Repeater-Builder] Re: adding a notch to bandpass cavity
I can add a notch cavity but i was hoping there is a way to include a notch in a bandpass cavity .There is a link on the repeater builder website that shows adding a small trimmer cap across the input and output a notch can be added to a bandpass cavity Thank You, Ian Wells, Kerinvale Comaudio, www.kerinvalecomaudio.com.au ---Original Message--- From: Dave VanHorn Date: 01/24/06 02:43:26 To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Re: adding a notch to bandpass cavity --- In Any conventional Notch filter can give you in excess of 20dB of Rejection at 5 Meg separation with minimal loss at your Rx frequency. In essence all notch filters are really a band pass-band reject filter With careful calculation. I get 40dB with a coax stub, but I don't remember the bandwidth offhand. There's a way to calculate them so that they end up a pass at your Desired freq (broad) and a notch at the undesired one (narrower), but I don't have a pointer to a URL at the moment. Yahoo! Groups Links Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
[Repeater-Builder] cable length
Is it nessary to have the correct length coax from the diplexer to the rx and tx or is there a formular that can show the correct length .I am currently using RG223 coax for these links Thank You, Ian Wells, Kerinvale Comaudio, www.kerinvalecomaudio.com.au YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
[Repeater-Builder] coaxial resonator loop
Can anyone tell me how to set the correct length of a coupling loop in a 100mm cavity .Is it suppose to be 1/4 wavelength and what would that be at 481mhz Thank You, Ian Wells, Kerinvale Comaudio, www.kerinvalecomaudio.com.au YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
[Repeater-Builder] new bp cavities
HiI have bought a new rfs band pass cavity and I am just checking about tuning it .it was advertised to work from 400-500 mhz but when I apply a signal around 480 mhz through it it doesn't seem to improve the filtering .When new do the elements inside need to be cut to suit the frequency .My frequency I want it to let through the filter is around 481mhz ?.I have seen other BP filters here and they have a shorter elements than this new tin . Thank You, Ian Wells, Kerinvale Comaudio, www.kerinvalecomaudio.com.au YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Re: [Repeater-Builder] CTCSS or DCS
In Queensland we have to also track down the offending signal .All we use is a radio ,a beam ,and aunit that reduces the signal when you get closer and we have no problem finding signals and where they come from. Thank You, Ian Wells, Kerinvale Comaudio, www.kerinvalecomaudio.com.au ---Original Message--- From: Kevin Natalia Date: 11/23/05 14:44:32 To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] CTCSS or DCS Hi Guys, Thanks for the advise so far. I have just been up to the repeater site today, and have tightened up the squelch some so it does not open so easy. The offending signal is still there, and I can hear it on the input of my mobile radio. For information, here in New Zealand we have a Gov. Radio Frequency dept, however with the recent changes in how they now work, we (Hams) have to do 99% of the work, to track down the offender. Once we have the information, we can forward it to them to process. It can be easier to try and clean it up with CTCSS, change frequency, or remove completely(not an option). With the lack of equipment to track this down, will just have to see what happens, and just try and stop it from getting into our RX. The signal from the link TX, is strong enough to over-ride the interference, and give as a clean link. Good old FM capture effect. Regards Kevin, ZL1KFM. - Original Message - From: "Mark A. Holman" [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: Wednesday, November 23, 2005 3:40 PM Subject: Re: [Repeater-Builder] CTCSS or DCS Say Kevin; If the interference is coming form a Part 15 device and IFon a licensed ham freq. it is called a incidental radiator, the FCC does send NAL's. research the ARRl web page for history of incidential radiators good info when you ask the owner to change channels or bands the FCC mails NALs on that as well also monetary forfeitures can be assessed for failure to comply. mark h. Kevin Natalia wrote: Hi All, We have run into a problem with some local interference getting into one of our link radios. It is believed to be coming from one of the TV home transmitters, that one can buy from the local appliance shops. It is producing a signal right on teh input of our link. I have put an extra filter in line, but this did not fix it. I really do not want to do through the hassel of trying to get another set of freqencies at this stage. Shoudl add that when the RX is receiving a signal from the TX link, it overrides the interference nicely. The interference is just enough to open the squelch. Have thought about putting either CTCSS, or a newer DCS TX/RX boards in the link system. I have read somewhere that DCS is the better way to go. If this is the case, where is the best place to purchase boards to fit inside our radios. We are using Tait T345 and T346 gear. Any information will help point us in the right direction. Regards Kevin, ZL1KFM. Yahoo! Groups Links Yahoo! Groups Links Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/ YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Re: [Repeater-Builder] Re: Aluminium ladders as towers
thanks garteth
i have one site with a ex power pole already setup with a 9 meter
steel pole along side of it but it is very hard climbing the post to
realease the top mounting clamp 8 meters up the post .
also the site i am trying to improve a 4wd is the only vehicle that can
access the site
Thank you
Ian Wells
Kerinvale Comaudio
mail service 1017,
Biloela,4715.
www.kerinvalecomaudio.com.au
Gareth Bennett wrote:
What's wrong with the old
woodentelephone pole with a 2" galv pipe outriger80% thelength of
the pole say spaced 1' from the pole? Easy to rig, tough, not subject
to "Rectification" as much as lattice towers, cheap. and can be put in
by your power utility pretty easily.
Just my 10c worth
_
Gareth Bennett
This e-mail is confidential, if you received this message in
error, or you
are not the intended recipient,
please return it to the sender and destroy any copies.
Thank you.
-
Original Message -
From:
Ian
Wells
To:
Repeater-Builder@yahoogroups.com
Sent:
Monday, August 22, 2005 12:23 PM
Subject:
Re: [Repeater-Builder] Re: Aluminium ladders as towers
thanks for the thoughts .Does anyone know of some good pages on cheap
masts or tower construction around 5-9 meters
Thank you
Ian Wells
Kerinvale Comaudio
mail service 1017,
Biloela,4715.
www.kerinvalecomaudio.com.au
Mike Perryman K5JMP wrote:
Ian,
In my part of the world a good aluminum ladder costs about twice what a
section of Rohn 25G costs...
I think I would go with the 25G just for safety and strength, not to mention
that your insurance agent would have a fit..
Mike
-Original Message-
From: Repeater-Builder@yahoogroups.com
[mailto:Repeater-Builder@yahoogroups.com]On Behalf Of Chuck Kelsey
Sent: Sunday, August 21, 2005 3:39 PM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] Re: Aluminium ladders as towers
I agree. There is not very good lateral strength in a ladder because there
is no diagonal bracing like most towers have. You need to think "triangles."
If it creates a triangle, in all planes, it's going to have strength. The
old "Dill" towers with horizontal "steps" had no sideways strength. Today's
Rohn has "Z" braces to form triangles.
Chuck
WB2EDV
- Original Message -
From: "Coy Hilton" [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Sunday, August 21, 2005 3:10 PM
Subject: [Repeater-Builder] Re: Aluminium ladders as towers
--- In Repeater-Builder@yahoogroups.com, "Coy Hilton" [EMAIL PROTECTED] wrote:
One addition, this is a single aluminum ladder.
Well, This was shown in the 2000 ARRL hand book...sorry to say. This
is a single aluminum ladder. It
works fine for field day operation the photo shows an exstention
ladder guyed at three points sitting in a hole dug about a foot deep
to keep it from walking off in the wind. I can see this being done for
a temperary setup but to use it as a commertial installation is
shurely dangerous.
Good luck Ian
AC0Y
--- In Repeater-Builder@yahoogroups.com, Ian Wells [EMAIL PROTECTED]
wrote:
Hi guys .I have heard of a communication business here in australia
useing ladders as towers .anyone tried this or know of any webpages
They must either join two together with braces or four of to form a
square which forms a free standing tower
Thank you
Ian Wells
Kerinvale Comaudio
mail service 1017,
Biloela,4715.
www.kerinvalecomaudio.com.au
Yahoo! Groups Links
Yahoo! Groups Links
Yahoo! Groups Links
* To visit your group on the web, go to:
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* To unsubscribe from this group, send an email to:
[EMAIL PROTECTED]
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YAHOO! GROUPS LINKS
Visit your group "Repeater-Builder" on the web.
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Re: [Repeater-Builder] Re: Aluminium ladders as towers
not bad
seem a little more deaf than taits but still verg good .
Thank you
Ian Wells
Kerinvale Comaudio
mail service 1017,
Biloela,4715.
www.kerinvalecomaudio.com.au
Gareth Bennett wrote:
Hi Ian,
Glad that things are busy for
you with your repeaters.
As for wooden poles, O get our local
lines company to install climbing rungs prior to fitment, usually
starting one metre from the groundto satisfyOSH requirements.
What about visiting your local
machine shop/engineer with some photo's of a standard "Tri-leg" tower
with lattice bracing. here in NZ we have usually 2 metre sections that
can be installed with a gin pole and a few blokes with the price of a
few bevvies afterwards. I've had these made up and usually pay $NZD
about $200 per 2 Metres.
...How are the Maxon's going?
_
Gareth Bennett
This e-mail is confidential, if you received this message in
error, or you
are not the intended recipient,
please return it to the sender and destroy any copies.
Thank you.
-
Original Message -
From:
Ian
Wells
To:
Repeater-Builder@yahoogroups.com
Sent:
Monday, August 22, 2005 7:37 PM
Subject:
Re: [Repeater-Builder] Re: Aluminium ladders as towers
thanks garteth
i have one site with a ex power pole already setup with a 9 meter
steel pole along side of it but it is very hard climbing the post to
realease the top mounting clamp 8 meters up the post .
also the site i am trying to improve a 4wd is the only vehicle that can
access the site
Thank you
Ian Wells
Kerinvale Comaudio
mail service 1017,
Biloela,4715.
www.kerinvalecomaudio.com.au
Gareth Bennett wrote:
What's wrong with the old
woodentelephone pole with a 2" galv pipe outriger80% thelength of
the pole say spaced 1' from the pole? Easy to rig, tough, not subject
to "Rectification" as much as lattice towers, cheap. and can be put in
by your power utility pretty easily.
Just my 10c worth
_
Gareth Bennett
This e-mail is confidential, if you received this message in
error, or you
are not the intended recipient,
please return it to the sender and destroy any copies.
Thank you.
-
Original Message -
From:
Ian
Wells
To:
Repeater-Builder@yahoogroups.com
Sent:
Monday, August 22, 2005 12:23 PM
Subject:
Re: [Repeater-Builder] Re: Aluminium ladders as towers
thanks for the thoughts .Does anyone know of some good pages on cheap
masts or tower construction around 5-9 meters
Thank you
Ian Wells
Kerinvale Comaudio
mail service 1017,
Biloela,4715.
www.kerinvalecomaudio.com.au
Mike Perryman K5JMP wrote:
Ian,
In my part of the world a good aluminum ladder costs about twice what a
section of Rohn 25G costs...
I think I would go with the 25G just for safety and strength, not to mention
that your insurance agent would have a fit..
Mike
-Original Message-
From: Repeater-Builder@yahoogroups.com
[mailto:Repeater-Builder@yahoogroups.com]On Behalf Of Chuck Kelsey
Sent: Sunday, August 21, 2005 3:39 PM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] Re: Aluminium ladders as towers
I agree. There is not very good lateral strength in a ladder because there
is no diagonal bracing like most towers have. You need to think "triangles."
If it creates a triangle, in all planes, it's going to have strength. The
old "Dill" towers with horizontal "steps" had no sideways strength. Today's
Rohn has "Z" braces to form triangles.
Chuck
WB2EDV
- Original Message -
From: "Coy Hilton" [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Sunday, August 21, 2005 3:10 PM
Subject: [Repeater-Builder] Re: Aluminium ladders as towers
--- In Repeater-Builder@yahoogroups.com, "Coy Hilton" [EMAIL PROTECTED] wrote:
One addition, this is a single aluminum ladder.
Well, This was shown in the 2000 ARRL hand book...sorry to say. This
is a single aluminum ladder. It
works fine for field day operation the photo shows an exstention
ladder guyed at three points sitting in a hole dug about a foot deep
to keep it from walking off in the wind. I can see this being done for
a temperary setup but to use it as a commertial installation is
shurely dangerous.
Good luck Ian
AC0Y
--- In Repeater-Builder@yahoogroups.com, Ian Wells [EMAIL PROTECTED]
wrote:
Hi guys .I have heard of a communication business here in australia
useing ladders as towers .anyone tried this or know of any webpages
They must either join t
Re: [Repeater-Builder] Re: Aluminium ladders as towers
we have used a 9 meter windmill tower on one site .i have been trying to locate 5-9 meter triangle type crankup towers or build a fold over like a nally but i havent found any basic plans to build from . Thank you Ian Wells Kerinvale Comaudio mail service 1017, Biloela,4715. www.kerinvalecomaudio.com.au Maxwell Pratt wrote: Ian TheCheap Home built towers will get you and someone else "Hurt Bad". The Co I used to work for to try to save money bid Jobs for less would installantennas on4x 4inch "US" 24ft Tall Treated wood poles Set inn ground Then Add about 10 ft mast to top. Giving themabout 30 ft height to antenna. Untill one fell with worker on top " Not worth saving a few dollars. Just save money and buyRohn 25 or other brand or have one Built. But don't rig up something that will get someone hurt. Over the Years I have picked up Tower from Mostly CBers that have gotten tired of hobby and are sellingout at very good prices sometimes just to take tower down they will give it to you.I have Three towers now 30 ft on end of house 30 ft freestanding in back yard 35 ft Alm Crank up I use for Field days Emrg. service .I bought 50 ft Rohn with antenna 11 M for $50.00 Had to take down. 30 ft American tower someone gave me just to get rid of it . crank up boughtfor $500.00 with new26b-2/2 M new tower sells for about $1800.00 if you look long enough you Might find something you could use .What about windmill tower I also have 35 ft Someone gave me "Other Ham" when he was moving out of State. Just look around don't be afraid to ask . Dale N8SAC YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Re: [Repeater-Builder] Re: Aluminium ladders as towers
thanks for the thoughts Thank you Ian Wells Kerinvale Comaudio mail service 1017, Biloela,4715. www.kerinvalecomaudio.com.au Coy Hilton wrote: --- In [EMAIL PROTECTED], "Coy Hilton" [EMAIL PROTECTED] wrote: One addition, this is a single aluminum ladder. Well, This was shown in the 2000 ARRL hand book...sorry to say. This is a single aluminum ladder. It works fine for field day operation the photo shows an exstention ladder guyed at three points sitting in a hole dug about a foot deep to keep it from walking off in the wind. I can see this being done for a temperary setup but to use it as a commertial installation is shurely dangerous. Good luck Ian AC0Y --- In [EMAIL PROTECTED], Ian Wells [EMAIL PROTECTED] wrote: Hi guys .I have heard of a communication business here in australia useing ladders as towers .anyone tried this or know of any webpages They must either join two together with braces or four of to form a square which forms a free standing tower Thank you Ian Wells Kerinvale Comaudio mail service 1017, Biloela,4715. www.kerinvalecomaudio.com.au Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/ YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
[Repeater-Builder] Aluminium ladders as towers
Hi guys .I have heard of a communication business here in australia useing ladders as towers .anyone tried this or know of any webpages They must either join two together with braces or four of to form a square which forms a free standing tower Thank you Ian Wells Kerinvale Comaudio mail service 1017, Biloela,4715. www.kerinvalecomaudio.com.au YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Re: [Repeater-Builder] Re: Aluminium ladders as towers
thanks for the thoughts .Does anyone know of some good pages on cheap masts or tower construction around 5-9 meters Thank you Ian Wells Kerinvale Comaudio mail service 1017, Biloela,4715. www.kerinvalecomaudio.com.au Mike Perryman K5JMP wrote: Ian, In my part of the world a good aluminum ladder costs about twice what a section of Rohn 25G costs... I think I would go with the 25G just for safety and strength, not to mention that your insurance agent would have a fit.. Mike -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Chuck Kelsey Sent: Sunday, August 21, 2005 3:39 PM To: [EMAIL PROTECTED] Subject: Re: [Repeater-Builder] Re: Aluminium ladders as towers I agree. There is not very good lateral strength in a ladder because there is no diagonal bracing like most towers have. You need to think "triangles." If it creates a triangle, in all planes, it's going to have strength. The old "Dill" towers with horizontal "steps" had no sideways strength. Today's Rohn has "Z" braces to form triangles. Chuck WB2EDV - Original Message - From: "Coy Hilton" [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Sunday, August 21, 2005 3:10 PM Subject: [Repeater-Builder] Re: Aluminium ladders as towers --- In [EMAIL PROTECTED], "Coy Hilton" [EMAIL PROTECTED] wrote: One addition, this is a single aluminum ladder. Well, This was shown in the 2000 ARRL hand book...sorry to say. This is a single aluminum ladder. It works fine for field day operation the photo shows an exstention ladder guyed at three points sitting in a hole dug about a foot deep to keep it from walking off in the wind. I can see this being done for a temperary setup but to use it as a commertial installation is shurely dangerous. Good luck Ian AC0Y --- In [EMAIL PROTECTED], Ian Wells [EMAIL PROTECTED] wrote: Hi guys .I have heard of a communication business here in australia useing ladders as towers .anyone tried this or know of any webpages They must either join two together with braces or four of to form a square which forms a free standing tower Thank you Ian Wells Kerinvale Comaudio mail service 1017, Biloela,4715. www.kerinvalecomaudio.com.au Yahoo! Groups Links Yahoo! Groups Links Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/ YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Re: [Repeater-Builder] Narrow Band 1Mhz split on 470Mhz - Build
there are special duplexers for that try rf industries,polar elec for 477 mhz duplexers .other types cannot do that small split their lowest figureis 2.5 meg split Thank youIan WellsKerinvale Comaudiomail service 1017,Biloela,4715.www.kerinvalecomaudio.com.au - Original Message - From: Kevin To: Repeater-Builder@yahoogroups.com Sent: 27 June, 2005 8:25 AM Subject: [Repeater-Builder] Narrow Band 1Mhz split on 470Mhz - Build Hi All,I am buidling a 470Mhz PRS here in NZ.However on checking the frequencies for RX/TX, I found it was very close, less then 1Mhz. For the channel they will be using, it is 476.425RX/477.175TX.I am sure the radio will be okay, however I am a little concerned on using 1 antenna, and running a duplexer.Question: can a 70cm duplexer be made to work at 1Mhz, and if so what type would he need?Any information would be helpful.RegardsKevin, ZL1KFM.Yahoo! Groups Links* To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/* To unsubscribe from this group, send an email to: [EMAIL PROTECTED]* Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/ Yahoo! Groups Links To visit your group on the web, go to:http://groups.yahoo.com/group/Repeater-Builder/ To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
[Repeater-Builder] low tower repeater sites
I have been installing some 40 watt 470-480mhz repeaters with diplexerswith 6db antenna ontop of a 9 meter mast with no problems. I am wondering what i will face if i use a low mast ,say 3 meters above a fridge with a 50 watt repeater and 6db antenna..If i run into decence i will have to turn the repeater down but i was just wondering if there are some ideas out there that could help me improve the setup as these new sites iwould be happier to install lower towers to allow easier servicing .We will be useing heliax to the ant Thank youIan WellsKerinvale Comaudiomail service 1017,Biloela,4715.www.kerinvalecomaudio.com.au Yahoo! Groups Links To visit your group on the web, go to:http://groups.yahoo.com/group/Repeater-Builder/ To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
[Repeater-Builder] new australian radio trader email group
try australianradiotrader in yahoo groups Thank youIan WellsKerinvale Comaudiomail service 1017,Biloela,4715.www.kerinvalecomaudio.com.au Yahoo! Groups Links To visit your group on the web, go to:http://groups.yahoo.com/group/Repeater-Builder/ To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
[Repeater-Builder] Fw: [PRM80] prm80 L UW
Hi guys I have a prm80 L UW -PRM8025 and the backlighting has failed .light bulbs are ok and no 8 volts on pin 5 on the microphone .This occured after a mic that was wired wrong was tried in the mic socket.I have service manual to it but the model must be different as very few diagrams match up.any sugestions .both 5 volt and 9 volt regs are ok Yahoo! Groups Links To visit your group on the web, go to:http://groups.yahoo.com/group/Repeater-Builder/ To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Re: [Repeater-Builder] Fw: [PRM80] prm80 L UW
thanks glen .i found it to be a small surface mount transistor just up from the regulators .it was burned out Thank youIan WellsKerinvale Comaudiomail service 1017,Biloela,4715.www.kerinvalecomaudio.com.au - Original Message - From: Glenn Little WB4UIV To: Repeater-Builder@yahoogroups.com Sent: 17 April, 2005 9:01 AM Subject: Re: [Repeater-Builder] Fw: [PRM80] prm80 L UW Check for an open choke in series with the power lead to the microphone.73GlennWB4UIVAt 05:28 PM 04/16/05, you wrote: Hi guys I have a prm80 L UW -PRM8025 and the backlighting has failed .light bulbs are ok and no 8 volts on pin 5 on the microphone .Thisoccured after a mic that was wired wrong was tried in the mic socket.I have service manual to it but the model must be different as very fewdiagrams match up.any sugestions .both 5 volt and 9 volt regs are ok--Yahoo! Groups Links * To visit your group on the web, go to: * http://groups.yahoo.com/group/Repeater-Builder/http://groups.yahoo.com/group/Repeater-Builder/ * * To unsubscribe from this group, send an email to: * mailto:[EMAIL PROTECTED][EMAIL PROTECTED] * * Your use of Yahoo! Groups is subject to the http://docs.yahoo.com/info/terms/Yahoo! Terms of Service.Yahoo! Groups Links* To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/* To unsubscribe from this group, send an email to: [EMAIL PROTECTED]* Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/ Yahoo! Groups Links To visit your group on the web, go to:http://groups.yahoo.com/group/Repeater-Builder/ To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Re: [Repeater-Builder] I found a new Ham Radio Auction Site
remember to add .com after it Thank youIan WellsKerinvale Comaudiomail service 1017,Biloela,4715.www.kerinvalecomaudio.com.au - Original Message - From: [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: 07 April, 2005 10:27 AM Subject: Re: [Repeater-Builder] I found a new Ham Radio Auction Site i guess you never saw this part of that site if you wanted to sell but buying should be a breezeKeith Va3kmc Second Category Fee 0.25 USDAdditional Pictures Fee 0.10 USDHighlighted Items Fee 0.50 USDBold Items Fee 0.50 USDCategory Featured Items Fee 1.00 USDHome Page Featured Items Fee 9.95 USDReserve Price Fee 2.00 USDBuy-it-now Fee 0.10 USDWanted Ad Setup Fee 1.00 USDStore Setup Fee 7.95 USD - recurring, every 30 day(s)End of Auction FeeFrom 0.01 USD to 5.00 USD 5.00%From 5.00 USD to 10.00 USD 4.50%From 10.00 USD to 50.00 USD 4.00%From 50.00 USD to 250.00 USD 3.00%From 250.00 USD to 1,000.00 USD 2.50%From 1,000.00 USD to AboveI was looking for an alternative to EBAY and I found this site. Onlyfor amateur radio.It is new only been up a few days. But, I like the way it looks, and Ilisted some items. Didn't cost me anything to list, so I figured whatcan I lose. I noticed it is a secure server, so didn't have to worryabout that.I thought everyone else might like to know about it.It has a section for Repeaters and Repeater Parts.www.ventureauctions.Yahoo! Groups Links* To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/* To unsubscribe from this group, send an email to: [EMAIL PROTECTED]* Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/ Yahoo! Groups Links To visit your group on the web, go to:http://groups.yahoo.com/group/Repeater-Builder/ To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
[Repeater-Builder] philips tx815
would anyone know how to modify a tx815 to narrowband 12.5khz with 2.5 khz modulation Thank youIan WellsKerinvale Comaudiomail service 1017,Biloela,4715.www.kerinvalecomaudio.com.au Yahoo! Groups Links To visit your group on the web, go to:http://groups.yahoo.com/group/Repeater-Builder/ To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
[Repeater-Builder] on/off solar chargers
can anyone sugest how to make on/off type chargers more effective solar charger Thank youIan WellsKerinvale Comaudiomail service 1017,Biloela,4715.www.kerinvalecomaudio.com.au Yahoo! Groups Links To visit your group on the web, go to:http://groups.yahoo.com/group/Repeater-Builder/ To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
[Repeater-Builder] maxon sd174 data radios.
would anyone know how to wire 2 maxon sd174 data radios together as a link repeater Thank youIan WellsKerinvale Comaudiomail service 1017,Biloela,4715.www.kerinvalecomaudio.com.au Yahoo! Groups Links To visit your group on the web, go to:http://groups.yahoo.com/group/Repeater-Builder/ To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Re: [Repeater-Builder] What PA temp is too much?
I have run into the same problem useing maxon pm150 radios as a repeater and i installed a bigger heatsink onto the original heatsink and it seems to be running cooler Thank you Ian Wells Kerinvale Comaudio mail service 1017, Biloela,4715. www.kerinvalecomaudio.com.au - Original Message - From: Paul Finch [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: 18 February, 2005 1:39 AM Subject: RE: [Repeater-Builder] What PA temp is too much? Jim and Larry, Jim is correct, after thinking, about 70 Degrees C or 158 degrees F is a good place to not go past. One thing, if you have a good heat sink that is getting to hot to hold, place a fan on it. They are cheap and a great way to increase the efficiency of the cooling of the heat sink. Heat speeds the degradation of transistors, the cooler you can keep them the longer they will last. Paul WB5IDM -Original Message- From: Jim B. [mailto:[EMAIL PROTECTED] Sent: Thursday, February 17, 2005 9:30 AM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] What PA temp is too much? Paul Finch wrote: About ten degrees before the transistor starts to boil. Good question though. Probably should look at the specifications of the transistor if someone can't tell you off the top of their head. Low band should be fairly robust about heat. Paul WB5IDM Group, If I was to use a thermal activated warning on a PA heatsink of a Lowband Mitrek, what would you think a good High Temperature value (in degrees) would be to sound the alert on the controller. Larry, N8RDT The rule of thumb I've been using is that if you can't hold your hand on the heatsink for more then 2-3 seconds, it's too hot. How hot is that? I'm thinking 130-150 F maybe? -- Jim Barbour WD8CHL Yahoo! Groups Links Yahoo! Groups Links Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
[Repeater-Builder] tait t2010
would anyone know of a way to drive a small npn or pnp transistor from the 14-4 pin on the logic board Thank you Ian Wells Kerinvale Comaudio mail service 1017, Biloela,4715. www.kerinvalecomaudio.com.au Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
[Repeater-Builder] heating up problems
ihave a question i have a tait t2010 receiver hooked to a pm150 maxon (smx4450uhf)at 40 watts into a 6mc450s duplexer feeding a 6db commercial antenna .it works fine but if we use the repeater continous for quite a while .the rx signal slowly gets weaker and finally pure static .we give the system a break for a bit and it seems to come clear again i have heared the transmitter might be heating up and this could be caused by reflected power because of the length of cable between the tx and duplexer isn't correct. someone also sugested useing antenna tuners to match it i was talking to another rf company today and they sugested to check the duplexer to see if it is heating up which might answer the weaker rx signal but i havent checked this . can anyone shed some light on what could be causeing rx problem . Thank you Ian Wells Kerinvale Comaudio mail service 1017, Biloela,4715. www.kerinvalecomaudio.com.au Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
[Repeater-Builder] smx4450 maxon
i am chaseing information on keeping a smx4450 repeater cool .i have considered installing a bigger heatsink onto the back of the tx radio but i also remember that someone sugested installing a antenna tuner between the tx radio and the diplexer to reduce the swr so the tx module runs cooler.can anyone sugest a tunner for this band 470-480mhz . Thank youIan WellsKerinvale Comaudiomail service 1017,Biloela,4715.www.kerinvalecomaudio.com.au Yahoo! Groups Links To visit your group on the web, go to:http://groups.yahoo.com/group/Repeater-Builder/ To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Re: [Repeater-Builder] Need Literature on tuning Duplexers
try http://www.n8zcc.com/ge/duplexer.htm Thank youIan WellsKerinvale Comaudiomail service 1017,Biloela,4715.www.kerinvalecomaudio.com.au - Original Message - From: w9mwq To: Repeater-Builder@yahoogroups.com Sent: 02 January, 2005 8:30 AM Subject: [Repeater-Builder] Need Literature on tuning Duplexers Anyone know any good books that will teach me how to go about tuning duplexers. I've downloaded several articles, but need something that goes in depth. Or if anyone is willing to work with me, it would be appreciated. I have a Cushman CE-6030 SM to work with here. Thanks!MathewYahoo! Groups Links* To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/* To unsubscribe from this group, send an email to: [EMAIL PROTECTED]* Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/ Yahoo! Groups Links To visit your group on the web, go to:http://groups.yahoo.com/group/Repeater-Builder/ To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
[Repeater-Builder] m120 mics
would anyone in australia have some motorola m120 mics for sale Thank you Ian Wells Kerinvale Comaudio mail service 1017, Biloela,4715. www.kerinvalecomaudio.com.au Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
[Repeater-Builder] maxon pm150 /4450 repeaters
would anyone know how to modify a pm 150 into a repeater especially where to connect the high level audio input from the receiver to a pm 150 radio to give the right deviation Thank youIan WellsKerinvale Comaudiomail service 1017,Biloela,4715.www.kerinvalecomaudio.com.au Yahoo! Groups Links To visit your group on the web, go to:http://groups.yahoo.com/group/Repeater-Builder/ To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Re: [Repeater-Builder] tait 2010
cool .i am a maxon dealer and that would be a good sugestion .also i thank the sugestion about opening the links and not haveing them controled by ctcss .it has improved the rresponse time greatly Thank you Ian Wells Kerinvale Comaudio mail service 1017, Biloela,4715. www.kerinvalecomaudio.com.au - Original Message - From: Gareth Bennett [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: 14 November, 2004 2:15 PM Subject: Re: [Repeater-Builder] tait 2010 Hi there Ian; It sounds like you are a Maxon dealer? A better option if you wanted to persue the single CTCSS path and to keep your quiescent current on your solar sites down would be to utilise the Maxon SD-170 series of Data radio's for your repeaters. We have used these VERY successfully here in NZ on alpine sites with a PA where other gear was just too hard on batteries.(As I recall they only use 65mA on stby) ALSO these radio's will Pass CTCSS :-) ... So you could configure these at your Back-Back links and also your Remote Sites if you so desired. And they come with some other neat features that you could implement later :-) If I was putting together a budget community network this is one of the avenues that I would pursue, especially if cost was an issue. Cheers; Gareth Bennett Yahoo! Groups Links Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] tait 2010
Thank you Ian Wells Kerinvale Comaudio mail service 1017, Biloela,4715. www.kerinvalecomaudio.com.au - Original Message - From: Gareth Bennett [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: 13 November, 2004 5:49 PM Subject: Re: [Repeater-Builder] tait 2010 Hi Ian, What CTCSS freq are you using by the way, (I hope not 100 Hz?) actually yes .sounds like i better find another frequency I'd can the Back to back Rx CTCSS and that would speed up the link no end. What's the linking paths like between your main repeater and your two remote sites? reasonably good Your decode times are indeed excessive, also I wonder what breed is your mobile gear (Tait?) all tait t2010 rx and tx Icom for instance is VERY slow to decode CTCSS. What facilities do you have for test and measurement? Do you have a service monitor or at least a deviation meter and signal gen that can generate CTCSS frequency? yes waveteck service monitor 4031 How have you wired your back to back T2010's (Will they pass CTCSS witithout regeneration?) not sure below - S14-1 +13 vdc (switched) (could use S13-12 unswitched dc) S14-2+5 vdc S14-3 COS (+5v goes to 0 volts when active) S14-4 If you use CTCSS use this pin instead of S14-3. S14-6 PTT (0v = transmit ) (ground this pin for ptt) S13-3 Receiver audio line out S13-6 Transmitter audio line in S13-11 Ground i also have the s14-4 being used to switch the tx on all the sites this is being done via a 4n25 opto ic to drive a small pnp transistor to switch the tx on the transmitter i have wired the s13-3 via a audio level circuit to s13-6disk audio in the subtone filters are also enabled on each site Also what PSU are you running? If there is mains hum (Hence reason NOT to use 100 Hz subtone) this will bugger you up no end. i thank you for this bit -the repeater sites are all solar powered .one link site is battery powered with a charger off 240 volt and the other link is solar powered Just a few questions as starters and we can go from there :-) Cheers; Gareth Bennett Comme Engineer Electrix Ltd New Zealand HVDC link Yahoo! Groups Links Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] tait 2010
thanks bradley any idea which cap i do have the circuit diagram Thank you Ian Wells Kerinvale Comaudio mail service 1017, Biloela,4715. www.kerinvalecomaudio.com.au - Original Message - From: bradley glen [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: 14 November, 2004 1:44 AM Subject: Re: [Repeater-Builder] tait 2010 Hi If you have a look you can reduce the squelch delay by removing the electrolytic cap around the squelch circuit(hope you have a diagram for the rf platform.).I have done a similar squelch mod with the gm300.Reduces the delay but also increases the chance of falsing. Remember that the higher ctcss frequencies do reduse the decoding time. Regards Brad ZS5WT South Africa --- ian wells [EMAIL PROTECTED] wrote: Thank you Ian Wells Kerinvale Comaudio mail service 1017, Biloela,4715. www.kerinvalecomaudio.com.au - Original Message - From: Gareth Bennett [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: 13 November, 2004 5:49 PM Subject: Re: [Repeater-Builder] tait 2010 Hi Ian, What CTCSS freq are you using by the way, (I hope not 100 Hz?) actually yes .sounds like i better find another frequency I'd can the Back to back Rx CTCSS and that would speed up the link no end. What's the linking paths like between your main repeater and your two remote sites? reasonably good Your decode times are indeed excessive, also I wonder what breed is your mobile gear (Tait?) all tait t2010 rx and tx Icom for instance is VERY slow to decode CTCSS. What facilities do you have for test and measurement? Do you have a service monitor or at least a deviation meter and signal gen that can generate CTCSS frequency? yes waveteck service monitor 4031 How have you wired your back to back T2010's (Will they pass CTCSS witithout regeneration?) not sure below - S14-1 +13 vdc (switched) (could use S13-12 unswitched dc) S14-2+5 vdc S14-3 COS (+5v goes to 0 volts when active) S14-4 If you use CTCSS use this pin instead of S14-3. S14-6 PTT (0v = transmit ) (ground this pin for ptt) S13-3 Receiver audio line out S13-6 Transmitter audio line in S13-11 Ground i also have the s14-4 being used to switch the tx on all the sites this is being done via a 4n25 opto ic to drive a small pnp transistor to switch the tx on the transmitter i have wired the s13-3 via a audio level circuit to s13-6disk audio in the subtone filters are also enabled on each site Also what PSU are you running? If there is mains hum (Hence reason NOT to use 100 Hz subtone) this will bugger you up no end. i thank you for this bit -the repeater sites are all solar powered .one link site is battery powered with a charger off 240 volt and the other link is solar powered Just a few questions as starters and we can go from there :-) Cheers; Gareth Bennett Comme Engineer Electrix Ltd New Zealand HVDC link Yahoo! Groups Links Yahoo! Groups Links [EMAIL PROTECTED] __ Do you Yahoo!? Check out the new Yahoo! Front Page. www.yahoo.com Yahoo! Groups Links Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] tait 2010
thanks gareth this repeater system is being setup as a community repeater (ie everyone can hear and talk to others on the channel.this is to keep the costs down .if the clients need total privacy they can go with scramblers).this is also to allow unlimited number of users on the system the tait transmitters on each repeater site are about to be replaced with maxon pm150 smx4450 radios as i have found they carn't keep the tx power up for long periods and each repeater site is powered by 2 x 80 watt solar panels with big deep cycle batteries i did think of connecting the link radios directly into between the rx radio and the tx radio on each repeater so when a signal is received both the link and transmitter is activated at the same time but i came up with a problem .when the repeater is active it would be too close to one of the link frequencies aprox 100 khz so i didn't go any futher that way i am going to inspect one site today and remove the linking ctcss control and hopefully set it up for carrier only and see how much of a improvement .i did feel this would give faster activation and because the beams are concertrated lines of site so interference is not as likely . i could initalize a point to point frequency between repeater sites but at 500 a link it is expensive .we were advise by aca to just use back to back as we own the repeater frequencies so it wouldn't cost anything extra to have linking sites Thank you Ian Wells Kerinvale Comaudio mail service 1017, Biloela,4715. www.kerinvalecomaudio.com.au - Original Message - From: Gareth Bennett [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: 14 November, 2004 1:55 AM Subject: Re: [Repeater-Builder] tait 2010 Hi again Ian, I have looked at your website as to gain more insight with your repeater network, and now understand more what you want to achieve. Below is for your info, and possibly how you could make best out of your situation. If I was in your position I would possibly do things differently... Add a repeater manager such as a CSI TP154 (Allowing you to utilise multiple CTCSS tones... And therefore control on individual clients, You can not disable CTCSS on a non paying client when they share the same CTCSS code as in a Community channel Bin the T2010's .. They are hungry on power (Especially in solar applications) And also are only Mobile's and therefore do not have the front end to cope in RF high fields If you can find Tait T345 /T346 Base station equipment, this per repeater only draws on standby about 70-80 mA ... Much easier on PV Arrays and batteries. Also this makes the T800 series look VERY Greedy :) It looks as if you have potential to link all your sites without Back to back linking ... (I know this saves bucks) ... Can you apply for a separate linking frequency for site A and B ? I don't know the rules in OZ compared in NZ but probably they are damn close!... If you can go from Master to A or Master to B directly, you can save two extra sites, gain more CONTROL and have a faster network. P.S. I know the Tait T300 series is old, but as yet there is nothing that will beat it when power consumption is added to the equation as well as selectivity. (This is crystal controlled gear). We can work on your existing network and make it better If I can use my knowledge to help, so much the better (Microwave links can be so damn boring :-) _ Gareth Bennett This e-mail is confidential, if you received this message in error, or you are not the intended recipient, please return it to the sender and destroy any copies. Thank you. - Original Message - From: ian wells [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: Sunday, November 14, 2004 3:38 AM Subject: Re: [Repeater-Builder] tait 2010 Thank you Ian Wells Kerinvale Comaudio mail service 1017, Biloela,4715. www.kerinvalecomaudio.com.au - Original Message - From: Gareth Bennett [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: 13 November, 2004 5:49 PM Subject: Re: [Repeater-Builder] tait 2010 Hi Ian, What CTCSS freq are you using by the way, (I hope not 100 Hz?) actually yes .sounds like i better find another frequency I'd can the Back to back Rx CTCSS and that would speed up the link no end. What's the linking paths like between your main repeater and your two remote sites? reasonably good Your decode times are indeed excessive, also I wonder what breed is your mobile gear (Tait?) all tait t2010 rx and tx Icom for instance is VERY slow to decode CTCSS. What facilities do you have for test and measurement? Do you have a service monitor or at least a deviation meter and signal gen that can generate CTCSS frequency? yes waveteck service monitor 4031 How have you wired your
Re: [Repeater-Builder] tait t2010
chaseing 4ch 470-520mhz i think the model is 2010-623-100 Thank you Ian Wells Kerinvale Comaudio mail service 1017, Biloela,4715. www.kerinvalecomaudio.com.au Please update my email address in your records to my new address- [EMAIL PROTECTED] 1-email- [EMAIL PROTECTED] 2-email- [EMAIL PROTECTED] - Original Message - From: Gareth Bennett [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: 01 November, 2004 10:50 AM Subject: Re: [Repeater-Builder] tait t2010 Have some in NZ... What are you after especially? Cheers; Gareth Bennett - Original Message - From: ian wells [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: Monday, November 01, 2004 11:27 AM Subject: [Repeater-Builder] tait t2010 would anyone have a tait t2010 for sale in australia Thank you Ian Wells Kerinvale Comaudio mail service 1017, Biloela,4715. www.kerinvalecomaudio.com.au Please update my email address in your records to my new address- [EMAIL PROTECTED] 1-email- [EMAIL PROTECTED] 2-email- [EMAIL PROTECTED] Yahoo! Groups Links Yahoo! Groups Links Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
[Repeater-Builder] tait t2010
would anyone have a tait t2010 for sale in australia Thank you Ian Wells Kerinvale Comaudio mail service 1017, Biloela,4715. www.kerinvalecomaudio.com.au Please update my email address in your records to my new address- [EMAIL PROTECTED] 1-email- [EMAIL PROTECTED] 2-email- [EMAIL PROTECTED] Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Wavetek 2100 service monitor
you could also try the wavetek group [EMAIL PROTECTED] Thank you Ian Wells Kerinvale Comaudio mail service 1017, Biloela,4715. www.kerinvalecomaudio.com.au Please update my email address in your records to my new address- [EMAIL PROTECTED] 1-email- [EMAIL PROTECTED] 2-email- [EMAIL PROTECTED] - Original Message - From: [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: 30 October, 2004 3:42 PM Subject: [Repeater-Builder] Wavetek 2100 service monitor I've seen several of these show up on eBay over the past few months. I assume it's Wavetek's version of the Ramsey COM 3. Am I correct? Any other thoughts in regards to its quality? Bob NO6B Yahoo! Groups Links Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
[Repeater-Builder] gm300
I have two gm300 radios i have joined together as a repeater . can anyone tell mehow to change these to transmitt and receive ctcss tones .i have already setup the channels with 100 hz. Thank youIan WellsKerinvale Comaudiomail service 1017,Biloela,4715.www.kerinvalecomaudio.com.auPlease update my email address in your records to mynew address- [EMAIL PROTECTED]1-email- [EMAIL PROTECTED]2-email- [EMAIL PROTECTED] Yahoo! Groups Links To visit your group on the web, go to:http://groups.yahoo.com/group/Repeater-Builder/ To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Re: [Repeater-Builder] gm300
no need i found out it is on the mic thanks everyone Thank youIan WellsKerinvale Comaudiomail service 1017,Biloela,4715.www.kerinvalecomaudio.com.auPlease update my email address in your records to mynew address- [EMAIL PROTECTED]1-email- [EMAIL PROTECTED]2-email- [EMAIL PROTECTED] - Original Message - From: ian wells To: Repeater-Builder@yahoogroups.com Sent: 24 October, 2004 3:26 PM Subject: [Repeater-Builder] gm300 I have two gm300 radios i have joined together as a repeater . can anyone tell mehow to change these to transmitt and receive ctcss tones .i have already setup the channels with 100 hz. Thank youIan WellsKerinvale Comaudiomail service 1017,Biloela,4715.www.kerinvalecomaudio.com.auPlease update my email address in your records to mynew address- [EMAIL PROTECTED]1-email- [EMAIL PROTECTED]2-email- [EMAIL PROTECTED] Yahoo! Groups Links To visit your group on the web, go to:http://groups.yahoo.com/group/Repeater-Builder/ To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
