[Repeater-Builder] Re: KL Duplexer (Possibly 220 MHz?)
Bob, That is good news. I thought your 8 can set would tune up much better than the 6 can set I did. I had to mount the one I did on it's side also. I just got a piece of angle aluminum from the scrap pile and made a rack mount for the duplexer, so that it laid in the rack horizontally. I have seen them mounted in racks vertically, but they take up a lot more real estate in the rack when mounted that way. Good luck and nothing wrong with a back yard repeater. Joe - WA7JAW --- In Repeater-Builder@yahoogroups.com, Bob [EMAIL PROTECTED] wrote: Joe: Thanks for the info. I did a cheap 'n' dirty tune up with the service monitor and my DC-to-light receiver and was able to get the beast to behave surprisingly well. It required backing out the tuning screws far enough so that the duplexer will now have to rest on its side, but I think it'll work. Of course, there's virtually NO 220 activity here in Katrina-ville and I can't find a decent site for yet another of my repeater projects, so this may end up being a backyard repeater. Again, thanks for the info and sorry for the long delay in acknowledging your response. 73 de K5IQ Bob
[Repeater-Builder] Re: How to figure cable length for duplexer?
Gary, Duplexer of choice for me is the Sinclair Q2330E. I have had very good results with these on our 75 Watt VHF Micor stations and we use a Angle Linear preamp on the receivers. In your situation where you have a brand new Telewave, I would be tempted to call up Telewave and order 2 more cavities and the necessary pieces to turn your TPRD1554 into a TPRD1556. I don't think you will be disappointed with the end results. The second alternative is to get your hands on one or two of the older 12 Motorola or GE pass cans and insert them between the duplexer and the receiver and transmitter. To answer your question, the difference between 77db and 90-100db of isolation is like night and day, especially if you are using a preamp on the receiver and are running 25 watts or more power with the transmitter. If your receiver has a good tight helical coil front end, sometimes you can get by with a little less duplexer if everything else is perfect. I also can not stress enough to use Heliax for your feedline and also for your interconnect cables if possible. I use Andrew LDF for the feedline and Andrew FSJ superflex for all the interconnect jumpers. If you do need flexible jumpers made out of coax, use the silver plated double shielded cable with silver plated connectors. As has been said here many times over, whatever you do, please save your self a lot of trouble and greif and do not use any LMR cable for anything near a repeater or duplexer. Joe - WA7JAW --- In Repeater-Builder@yahoogroups.com, garyp609 [EMAIL PROTECTED] wrote: What duplexer would you recommend? I was expecting better results. Is there a huge difference in 77db versus 100db isolation besides the price? Performance wise. Kinda wish I would have done my homework before buying the TPRD1554. Running 25 watts here. What is your duplexer of choice? Thanks 73's Gary
RE: [Repeater-Builder] How to figure cable length for duplexer?
I should have thought what ever fills the gap ? To: Repeater-Builder@yahoogroups.com From: [EMAIL PROTECTED] Date: Fri, 25 Jul 2008 22:46:31 + Subject: [Repeater-Builder] How to figure cable length for duplexer? Output frequency is 145.450 input is 144.850. How do I figure out what length the cables should be between the rx side and tx side that connect to the T-Connector? Thanks and 73's ! Gary K2ACY _ It's simple! Sell your car for just $40 at CarPoint.com.au http://a.ninemsn.com.au/b.aspx?URL=http%3A%2F%2Fsecure%2Dau%2Eimrworldwide%2Ecom%2Fcgi%2Dbin%2Fa%2Fci%5F450304%2Fet%5F2%2Fcg%5F801459%2Fpi%5F1004813%2Fai%5F859641_t=762955845_r=tig_OCT07_m=EXT
Re: [Repeater-Builder] Re: How to figure cable length for duplexer?
Gary, When selecting a duplexer you want a model that is speced for the same TX - RX spacing as the application or less. Operating a 500K spacing duplexer at 600K is not a problem but trying to get a 1M spaced duplexer to operate at 600K will be. The issue is the way the individual pass/notch filters interact with each other. If you can get a copy of a Telewave catalog they have a nice section in the back that gives plenty of information about filters and duplexers. As to your immediate problem, adding a pass can via the proper length of coax on the RX side may help. I would suggest that you look for someone in your region with the proper test equipment to sweep tune the equipment. Also what type of repeater equipment are you using? Milt N3LTQ - Original Message - From: garyp609 [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: Friday, July 25, 2008 8:12 PM Subject: [Repeater-Builder] Re: How to figure cable length for duplexer? Thanks for the info. I will call call Telewave for an education. The TPRD1454 shows 77db of isolation and a minimum of a 1 meg split. I am running .600 split here. 73's Gary K2ACY --- In Repeater-Builder@yahoogroups.com, Bob M. [EMAIL PROTECTED] wrote: Telewave is VERY responsive to e-mails and even phone calls. I've had technical questions about their duplexers on several occasions and have sent e-mail to their only public e-mail address. Usually I get a reply later the same day or first thing in the morning from a man named Ray Collins. Turns out he's the president of Telewave and very nice to converse with. Highly recommended. I will offer this, however. Celwave (and possibly other manufacturers) seem to have cut lists which specify the lengths of coax you need between cavities and from the last cavity to the TEE connector. Telewave doesn't seem to have them; I've asked in the past and I'm always told they make each cable set on the shop floor when the unit is attached to expensive analysis equipment, starting with some known (but un-publicized) length, just to get it close, then they trim to fit until the unit performs as they want it to. In actuality, they may have a bunch of cables all made in various lengths by 1/4 inch increments, then select the right ones to get the desired performance. You probably wanted a TPRD1454 unit, if they make one, as that would have the right cable lengths and configuration for the 2 meter band. Bob M. == --- On Fri, 7/25/08, garyp609 [EMAIL PROTECTED] wrote: From: garyp609 [EMAIL PROTECTED] Subject: [Repeater-Builder] Re: How to figure cable length for duplexer? To: Repeater-Builder@yahoogroups.com Date: Friday, July 25, 2008, 7:09 PM Jim, Thanks for the response. The duplexer is a Telewave TPRD1554. They are brand new and bought from Tessco tuned. The cable on the RX side is marked 11 in black marker on the connector and the TX side is marked 11 1/2 . Both cables terminate at the T. I just want to feel assured that they are the right length as I feel my performance should be much better and want to rule out the duplexer. Gary K2ACY --- In Repeater-Builder@yahoogroups.com, Jim Brown w5zit@ wrote: What kind of duplexer is it? I have several older Sinclair 2 meter duplexers that were up in the 170 mHz range that I moved down to the ham band, and I had to replace each 10.5 inch cable that went from the can to the Tee with a cable 12.5 inches long. Turns out for those older models that piece of cable was part of the tuned circuit for adjusting the nulls. All duplexers are not made the same, so I think you need to be more specific. Interesting on the frequency you are using. We are just putting one on the same frequency here in central New Mexico - HI. 73 - Jim W5ZIT --- On Fri, 7/25/08, garyp609 gary.paul@ wrote: From: garyp609 gary.paul@ Subject: [Repeater-Builder] How to figure cable length for duplexer? To: Repeater-Builder@yahoogroups.com Date: Friday, July 25, 2008, 5:46 PM Output frequency is 145.450 input is 144.850. How do I figure out what length the cables should be between the rx side and tx side that connect to the T-Connector? Thanks and 73's ! Gary K2ACY Yahoo! Groups Links
[Repeater-Builder] Re: CAT300 programming?
First load your repeater ID into one of the blank voice message slots. Then prigram a schedular to make the controller ID every 15 minutes or what ever time is needed as required to ID the repeater when not in use. Howard K2IMO [EMAIL PROTECTED]
[Repeater-Builder] TKR-800
I would like to say thanks to everyone who wrote back on my tkr820 questions. I now have my 820 running running great on a nhrc-micro controller and life is good. Thanks again Guys Jack N9EX
[Repeater-Builder] Re: How to figure cable length for duplexer?
Operating a 500K spacing duplexer at 600K is not a problem but trying to get a 1M spaced duplexer to operate at 600K will be. The issue is the way the individual pass/notch filters interact with each other. The issue is the Q and how the cavities with their included loops/probes are designed constructed. The result of said is how the cavities ineract with each other. As to your immediate problem, adding a pass can via the proper length of coax on the RX side may help. If he's running a TPRD-1554 or TPRD-1454... he only needs to make sure the duplexer is properly setup aligned... that his receiver and transmitter are of decent performance quality properly aligned running a realistic tx power level. A close look at the receiver front-end design and it's realistic performance in duplex (repeater) operation would be high on the list of thing to do. Some receivers are just plain crappy... I would suggest that you look for someone in your region with the proper test equipment to sweep tune the equipment. ... add in the knowledge and experience to do the above task. Also what type of repeater equipment are you using? ... well worth knowing before pointing a finger at the duplexer. cheers, s.
[Repeater-Builder] pic processor for ctcss and test tones (on Ebay)
re: pic processor for ctcss and test tones (on Ebay) Someone has made an ordinary pic processor into a ctcss generator. I'm sure others have done it but here's the first one I've seen for sale on Ebay. CTCSS ENCODER SUB TONE Ebay Item number: 160262478338 [paste text] CTCSS ENCODER FOR OLD TRANSCEIVER,REPEATER,LINK,ETC.GENERATED WITH PIC MICROPROCESSOR ALL SET OF 51 STANDARD SUB TONES AND 1000,1750,1800,1200,2200,800,900,1100,1300,1500,2000,2500,3500HZ. THE SELECTION SWITCH IS DIP SWITCH.SIZE IS 3 X 2.6CM.VOLTAGE:5V CURRENT: 2.5mA.
RE: [Repeater-Builder] pic processor for ctcss and test tones (on EBay)
Where is the link on eBay Mike _ From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of skipp025 Sent: Saturday, July 26, 2008 10:59 AM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] pic processor for ctcss and test tones (on Ebay) re: pic processor for ctcss and test tones (on Ebay) Someone has made an ordinary pic processor into a ctcss generator. I'm sure others have done it but here's the first one I've seen for sale on Ebay. CTCSS ENCODER SUB TONE Ebay Item number: 160262478338 [paste text] CTCSS ENCODER FOR OLD TRANSCEIVER,REPEATER,LINK,ETC.GENERATED WITH PIC MICROPROCESSOR ALL SET OF 51 STANDARD SUB TONES AND 1000,1750,1800,1200,2200,800,900,1100,1300,1500,2000,2500,3500HZ. THE SELECTION SWITCH IS DIP SWITCH.SIZE IS 3 X 2.6CM.VOLTAGE:5V CURRENT: 2.5mA.
Re: [Repeater-Builder] pic processor for ctcss and test tones (on Ebay)
At 7/26/2008 09:59, you wrote: re: pic processor for ctcss and test tones (on Ebay) Someone has made an ordinary pic processor into a ctcss generator. I'm sure others have done it but here's the first one I've seen for sale on Ebay. CTCSS ENCODER SUB TONE Ebay Item number: 160262478338 [paste text] CTCSS ENCODER FOR OLD TRANSCEIVER,REPEATER,LINK,ETC.GENERATED WITH PIC MICROPROCESSOR ALL SET OF 51 STANDARD SUB TONES AND 1000,1750,1800,1200,2200,800,900,1100,1300,1500,2000,2500,3500HZ. THE SELECTION SWITCH IS DIP SWITCH.SIZE IS 3 X 2.6CM.VOLTAGE:5V CURRENT: 2.5mA. PICs are fun; I'm just starting to play with them. Having a hard time getting my PIC12F510 to do anything though. It programs fine, but won't run :( They don't have D/A's per se, but with a bunch of digital outputs a resistor divider network one can be approximated. I believe that's how the little APRS tracker boards work. Maybe a little dirty for CTCSS work, but cheap. Bob NO6B
[Repeater-Builder] Re: pic processor for ctcss and test tones (on EBay)
Copy the Ebay item number from any of these posts and paste it into an ebay page containing a search box. y presione entran (press enter) buena suerte s. Mike Mullarkey [EMAIL PROTECTED] wrote: Where is the link on eBay Mike _ From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of skipp025 Sent: Saturday, July 26, 2008 10:59 AM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] pic processor for ctcss and test tones (on Ebay) re: pic processor for ctcss and test tones (on Ebay) Someone has made an ordinary pic processor into a ctcss generator. I'm sure others have done it but here's the first one I've seen for sale on Ebay. CTCSS ENCODER SUB TONE Ebay Item number: 160262478338 [paste text] CTCSS ENCODER FOR OLD TRANSCEIVER,REPEATER,LINK,ETC.GENERATED WITH PIC MICROPROCESSOR ALL SET OF 51 STANDARD SUB TONES AND 1000,1750,1800,1200,2200,800,900,1100,1300,1500,2000,2500,3500HZ. THE SELECTION SWITCH IS DIP SWITCH.SIZE IS 3 X 2.6CM.VOLTAGE:5V CURRENT: 2.5mA.
Re: [Repeater-Builder] Re: How to figure cable length for duplexer?
Output frequency is 145.450 input is 144.850. How do I figure out what length the cables should be between the rx side and tx side that connect to the T-Connector? Thanks and 73's ! Gary K2ACY If the duplexer was supplied from Telewave on 2M, then what you have is right. LEAVE THEM ALONE! They just aren't that critical people!!! Even if it was originally on 150-160, it would still be fine!
[Repeater-Builder] Re: pic processor for ctcss and test tones (on Ebay)
--- In Repeater-Builder@yahoogroups.com, [EMAIL PROTECTED] wrote: At 7/26/2008 09:59, you wrote: re: pic processor for ctcss and test tones (on Ebay) Someone has made an ordinary pic processor into a ctcss generator. I'm sure others have done it but here's the first one I've seen for sale on Ebay. CTCSS ENCODER SUB TONE Ebay Item number: 160262478338 [paste text] CTCSS ENCODER FOR OLD TRANSCEIVER,REPEATER,LINK,ETC.GENERATED WITH PIC MICROPROCESSOR ALL SET OF 51 STANDARD SUB TONES AND 1000,1750,1800,1200,2200,800,900,1100,1300,1500,2000,2500,3500HZ. THE SELECTION SWITCH IS DIP SWITCH.SIZE IS 3 X 2.6CM.VOLTAGE:5V CURRENT: 2.5mA. PICs are fun; I'm just starting to play with them. Having a hard time getting my PIC12F510 to do anything though. It programs fine, but won't run :( They don't have D/A's per se, but with a bunch of digital outputs a resistor divider network one can be approximated. I believe that's how the little APRS tracker boards work. Maybe a little dirty for CTCSS work, but cheap. But in this case he just uses one output bit into a single pole low pass filter. Still cute, but for $39 from Greece, no thanks. 73's Skip WB6YMH
[Repeater-Builder] Re: How to figure cable length for duplexer?
Does the amount of power output make a difference with isolation? The paperwork I got shows 82.3 isolation on RX and 81.5 on TX. It appears the printout was done from a spectrum analyzer when TESSCO tuned the duplexer. I am running 25 watts. 73's Gary K2ACY --- In Repeater-Builder@yahoogroups.com, wd8chl [EMAIL PROTECTED] wrote: Output frequency is 145.450 input is 144.850. How do I figure out what length the cables should be between the rx side and tx side that connect to the T-Connector? Thanks and 73's ! Gary K2ACY If the duplexer was supplied from Telewave on 2M, then what you have is right. LEAVE THEM ALONE! They just aren't that critical people!!! Even if it was originally on 150-160, it would still be fine!
[Repeater-Builder] Duplexer Isolation (WAS Cable Length for Duplexer)
Gary, I think you're on the ragged edge of duplexer performance. According to the calculation of CommShop for Windows, your power output of 25 watts, 145.450 MHz TX and 144.850 MHz RX, and assuming a 0.3 uV receive sensitivity at 12 dB SINAD, a duplexer requires 85.6 dB of isolation for no desense. These are ballpark and not absolute figures. I suspect that the technician may have tuned the loops for less insertion loss, which accounts for the slightly low isolation figures. What does your printout show for insertion loss at the pass frequencies? Which model Telewave duplexer do you have? 73, Eric Lemmon WB6FLY -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of garyp609 Sent: Saturday, July 26, 2008 1:45 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Re: How to figure cable length for duplexer? Does the amount of power output make a difference with isolation? The paperwork I got shows 82.3 isolation on RX and 81.5 on TX. It appears the printout was done from a spectrum analyzer when TESSCO tuned the duplexer. I am running 25 watts. 73's Gary K2ACY --- In Repeater-Builder@yahoogroups.com mailto:Repeater-Builder%40yahoogroups.com , wd8chl [EMAIL PROTECTED] wrote: Output frequency is 145.450 input is 144.850. How do I figure out what length the cables should be between the rx side and tx side that connect to the T-Connector? Thanks and 73's ! Gary K2ACY
Re: [Repeater-Builder] Re: New 6M Repeater in Central NH
Sorry had to rant there -- hopefully that's on-topic enough for RB... about repeaters, but not really about building them... unless you consider that they're often the place where the local ham community gets built these days... On Jul 26, 2008, at 7:36 PM, Tom wrote: Dear Repeater-Builder administrators: I've got a few things to say along the lines of this post. They are not only off topic, they are clearly discouraged in the intro. page of the site: HOWEVER, I believe they now need to be said. In spite of this, I will respectfully defer to your judgement on this. Should I respond on this thread, begin a new thread or refrain from comment altogether? Tom The intro page of what site? http://www.repeater-builder.com/rbtip/ -- says nothing about this. Sorry Tom. I guess you missed that last paragraph of the post. I guess you think I'm out to cause you harm in some way that a delete key won't remedy? Don't be mad. It's e-mail for goodness sakes. Serious question: Do you filter mailing lists into folders so you can read them at your leisure, or do you have them cluttering your inbox? I'm not asking to be a smart-ass, I'm asking because I think a LOT of hams out there sign up for mailing lists and have them coming into the Inbox with little knowledge of the tools available to them to filter and handle mail of different priorities at different times, and it often sets them off when a topic is slightly questionable. This hurts community building on lists, in that certainly no harm was meant by my posting -- but if you were expecting only dead-on repeater building 100% of the time from a list with a lot of people who enjoy each other's online company... having the side-conversations hit your Inbox might drive you crazy -- and then our thread turns into a problem for the list owners. Seen it happen thousands of times. Other questions that come to mind, trying to be cognizant of who's here and what they expect from mailing lists... how long have you been a list member, and what's your callsign? The former is a question to see if you're familiar with how mailing lists have worked for years and years, or if you're reacting out of newbie shock. The latter is because I don't really enjoy (and many people here don't) communicating on civilized lists with anonymous folks, and since you complained about me -- it'd be nicer to know who you are than not. But whatever... it's the Internet. People hide behind keyboards, that's normal... and maybe you're here in the commercial repeater audience for the list and not a ham. That's cool too. Me, I'm just a ham... as are most of the active members of this particular online community here at RB, I think. Apologies to the list for asking here, but I don't get into this type of thing off-list with someone I don't know -- have had that go really badly including one wacko in the UK who decided he was offended by me asking him questions who took the effort to try to hunt down my BOSS at my real job, and tell him what a bad person I was. My boss laughed his butt off at that one, said he'd had a similar experience with an Internet wacko, and nothing came of it -- but when dealing with those upset with me on mailing lists nowadays, I keep the questions and discussion in public view. Everyone, please just let Tom respond and don't create a huge thread out of this one for Kevin and Scott to have to police, though -- please. Sorry my message caused such a reaction from you Tom. It wasn't meant to. I was just explaining why I made the comment about the class caption on the photo, is all. Too many people out there who want to keep that silliness going. Not me. -- Nate Duehr, WY0X [EMAIL PROTECTED]
Re: [Repeater-Builder] Re: New 6M Repeater in Central NH
On Jul 26, 2008, at 7:41 PM, [EMAIL PROTECTED] wrote: FDs since 1980 (mostly VHF/UHF FM). But for me, repeaters have been more than the gateway - they have been the center of the hobby. Bob NO6B Yeah, great thoughts Bob. Many ways into and around inside of this great hobby. I think Tom might be right that we're off-topic, unless we're talking about having a repeater-builder discussion about how to build repeater communities. And, I'd like to hear his feedback and not tick him off anymore, so I don't want to continue this thread here. I'm glad there's a new 6m Repeater in Central NH, glad there are repeaters and mailing lists to enjoy in my free-time, and having a ball. Some people aren't, and I can't see too many ways to remedy that if they're negative about things. Building and maintaining repeaters has certainly made my life better in a number of ways, worse in a few. If it wasn't a net gain, I certainly wouldn't be doing it! :-) -- Nate Duehr, WY0X [EMAIL PROTECTED]
[Repeater-Builder] Re: New 6M Repeater in Central NH
Nate, Sorry, my comments are related to the original post, not yours which I had forgotten I was quoting. Beyond that, I will wait for approval before further comment. My reference was to the following: This list is not for discussing FCC rules, proper operating practices, or brand loyalty (Motorola vs. GE). It is here for providing quality technical information. which I take to include prohibitions on comments on license class. Tom -- In Repeater-Builder@yahoogroups.com, Nate Duehr [EMAIL PROTECTED] wrote: Sorry had to rant there -- hopefully that's on-topic enough for RB... about repeaters, but not really about building them... unless you consider that they're often the place where the local ham community gets built these days... On Jul 26, 2008, at 7:36 PM, Tom wrote: Dear Repeater-Builder administrators: I've got a few things to say along the lines of this post. They are not only off topic, they are clearly discouraged in the intro. page of the site: HOWEVER, I believe they now need to be said. In spite of this, I will respectfully defer to your judgement on this. Should I respond on this thread, begin a new thread or refrain from comment altogether? Tom The intro page of what site? http://www.repeater-builder.com/rbtip/ -- says nothing about this. Sorry Tom. I guess you missed that last paragraph of the post. I guess you think I'm out to cause you harm in some way that a delete key won't remedy? Don't be mad. It's e-mail for goodness sakes. Serious question: Do you filter mailing lists into folders so you can read them at your leisure, or do you have them cluttering your inbox? I'm not asking to be a smart-ass, I'm asking because I think a LOT of hams out there sign up for mailing lists and have them coming into the Inbox with little knowledge of the tools available to them to filter and handle mail of different priorities at different times, and it often sets them off when a topic is slightly questionable. This hurts community building on lists, in that certainly no harm was meant by my posting -- but if you were expecting only dead-on repeater building 100% of the time from a list with a lot of people who enjoy each other's online company... having the side-conversations hit your Inbox might drive you crazy -- and then our thread turns into a problem for the list owners. Seen it happen thousands of times. Other questions that come to mind, trying to be cognizant of who's here and what they expect from mailing lists... how long have you been a list member, and what's your callsign? The former is a question to see if you're familiar with how mailing lists have worked for years and years, or if you're reacting out of newbie shock. The latter is because I don't really enjoy (and many people here don't) communicating on civilized lists with anonymous folks, and since you complained about me -- it'd be nicer to know who you are than not. But whatever... it's the Internet. People hide behind keyboards, that's normal... and maybe you're here in the commercial repeater audience for the list and not a ham. That's cool too. Me, I'm just a ham... as are most of the active members of this particular online community here at RB, I think. Apologies to the list for asking here, but I don't get into this type of thing off-list with someone I don't know -- have had that go really badly including one wacko in the UK who decided he was offended by me asking him questions who took the effort to try to hunt down my BOSS at my real job, and tell him what a bad person I was. My boss laughed his butt off at that one, said he'd had a similar experience with an Internet wacko, and nothing came of it -- but when dealing with those upset with me on mailing lists nowadays, I keep the questions and discussion in public view. Everyone, please just let Tom respond and don't create a huge thread out of this one for Kevin and Scott to have to police, though -- please. Sorry my message caused such a reaction from you Tom. It wasn't meant to. I was just explaining why I made the comment about the class caption on the photo, is all. Too many people out there who want to keep that silliness going. Not me. -- Nate Duehr, WY0X [EMAIL PROTECTED]
RE: [Repeater-Builder] Re: New 6M Repeater in Central NH
Refrain,,,theres nothing more to add. Sounds like trouble anyways. I type stuff all the time then never hit send. License class means nothing. So who else drained a liter of water from a 600ft air dielectric hard line today? Who wants the video? Don w5dk Not a list admin From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Tom Sent: Saturday, July 26, 2008 8:36 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Re: New 6M Repeater in Central NH Dear Repeater-Builder administrators: I've got a few things to say along the lines of this post. They are not only off topic, they are clearly discouraged in the intro. page of the site: HOWEVER, I believe they now need to be said. In spite of this, I will respectfully defer to your judgement on this. Should I respond on this thread, begin a new thread or refrain from comment altogether? Tom --- In Repeater-Builder@yahoogroups.com mailto:Repeater-Builder%40yahoogroups.com , Nate Duehr [EMAIL PROTECTED] wrote: On Jul 25, 2008, at 8:40 AM, Jason Greene wrote: --- In Repeater-Builder@yahoogroups.com mailto:Repeater-Builder%40yahoogroups.com , Nate Duehr nate@ wrote: No point in extending the pointless license class wars on a club website though. Nate WY0X I understood that caption as a reference their abilities. If you were familiar with the club up here you would know this isn't a problem- no ego's to deal with. I was a little nervous about saying anything for that reason -- different areas, different people. Not much overt class war going on here either, but a recent e-mail exchange with a grumpy old fuddy duddy who posted to a local VHF+ mailing list that people who use repeaters are nothing more than pickle pushers -- made me react badly to the caption. You know, (and I told him this too)... if he were putting on CW classes, RF engineering classes, and helping people learn, it'd be one thing. But he acts like he came out of his momma knowing CW and how to read Smith charts. That just chaps me to no end. We have plenty of nice folks who have come into the hobby through the use of our repeaters *first* who then learn about simplex, and then SSB, and then digital modes, and then weak-signal optimization techniques and antennas, and DX and... the list goes on, of course. What a great hobby. Repeaters are often the gateway to a lifetime of learning and camaraderie for many new hams. Treating them like crap does nothing to further any useful cause. Sorry had to rant there -- hopefully that's on-topic enough for RB... about repeaters, but not really about building them... unless you consider that they're often the place where the local ham community gets built these days... -- Nate Duehr, WY0X [EMAIL PROTECTED]
[Repeater-Builder] Duplexer Tuning HELP
.http://www.eset.com I wonder if anyone in the TAMPA area or even anywhere on the west coast of Florida, could help with tuning a 220 duplexer? I'd like a real tune up rather than some backyard methods that were suggested ! All kiddin' aside I suppose you pay for what you get and I'd like to know they were done right. Any help would be appreciated. . -Mike, K4CVL (941) 376-6453
[Repeater-Builder] Duplexer Tuning Help
Hello RBs.. I am looking for someone in the Tampa Bay or FLA West Coast area that can evaluate and tune a set of Wacom 220 duplexers. Anyone interested or KNOW anyone with the right gear to do this? Thanks... - Mike (941) 376-6453
[Repeater-Builder] TEST
This is a test message. I joined this wonderful group but my messages have been deemed fit for posting it appears. -Mike
[Repeater-Builder] Re: New 6M Repeater in Central NH
...theres nothing more to add. Now, how would you know that? I'll wait for an administrator's opinion and abide by that, thank you. I DO believe that I have something to say in spite of you pompous denial. Tom --- In Repeater-Builder@yahoogroups.com, de W5DK [EMAIL PROTECTED] wrote: Refrain,,,theres nothing more to add. Sounds like trouble anyways. I type stuff all the time then never hit send. License class means nothing. So who else drained a liter of water from a 600ft air dielectric hard line today? Who wants the video? Don w5dk Not a list admin From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Tom Sent: Saturday, July 26, 2008 8:36 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Re: New 6M Repeater in Central NH Dear Repeater-Builder administrators: I've got a few things to say along the lines of this post. They are not only off topic, they are clearly discouraged in the intro. page of the site: HOWEVER, I believe they now need to be said. In spite of this, I will respectfully defer to your judgement on this. Should I respond on this thread, begin a new thread or refrain from comment altogether? Tom --- In Repeater-Builder@yahoogroups.com mailto:Repeater-Builder%40yahoogroups.com , Nate Duehr nate@ wrote: On Jul 25, 2008, at 8:40 AM, Jason Greene wrote: --- In Repeater-Builder@yahoogroups.com mailto:Repeater-Builder%40yahoogroups.com , Nate Duehr nate@ wrote: No point in extending the pointless license class wars on a club website though. Nate WY0X I understood that caption as a reference their abilities. If you were familiar with the club up here you would know this isn't a problem- no ego's to deal with. I was a little nervous about saying anything for that reason -- different areas, different people. Not much overt class war going on here either, but a recent e-mail exchange with a grumpy old fuddy duddy who posted to a local VHF+ mailing list that people who use repeaters are nothing more than pickle pushers -- made me react badly to the caption. You know, (and I told him this too)... if he were putting on CW classes, RF engineering classes, and helping people learn, it'd be one thing. But he acts like he came out of his momma knowing CW and how to read Smith charts. That just chaps me to no end. We have plenty of nice folks who have come into the hobby through the use of our repeaters *first* who then learn about simplex, and then SSB, and then digital modes, and then weak-signal optimization techniques and antennas, and DX and... the list goes on, of course. What a great hobby. Repeaters are often the gateway to a lifetime of learning and camaraderie for many new hams. Treating them like crap does nothing to further any useful cause. Sorry had to rant there -- hopefully that's on-topic enough for RB... about repeaters, but not really about building them... unless you consider that they're often the place where the local ham community gets built these days... -- Nate Duehr, WY0X nate@
[Repeater-Builder] Cable length for NOTCH cavity?
In an attempt to address a hard 3rd order issue apparently being caused by a Motorola Radius repeater (no circulator and a cheapie internal notch duplexer). Background: Repeaters A and B share a properly engineered combiner system which is working well at 4 other sites. At this site a repeater we don't control (the Radius) shares the tower but NOT the combiner or antenna system. Repeater A transmits on freq X, Repeater B receives on freq Y, The Radius transmits on freq Z. The issue: 2X - Z = Y We believe the mix is happening in the Radius transmitter. We don't own or control the Radius and will need to prove the issue before we can get it's owner to address the problem. So... I tuned a spare can as a notch (~19db) at freq X and intend to place it in-line with the Radius in hopes of removing (lowering) the level of freq X getting into the Radius transmitter. A 20 dB reduction should reduce the intermod by 40 dB IF the mixing is happening in the Radius. I hope. I intend to remove the antenna cable from the Radius, plug it into the T at the can and run a double-shielded cable from the can to the Radius. Does the length of the added cable matter? If so, what should it be: fractional wavelength at X or Z? Something else? TIA, Bill - WB1GOT
[Repeater-Builder] Storm Damage
Don, the guys in Live Oak are stll drying out the room the repeater is located in. With a flat top roof, it seems the water level built up so fast that it came down some of the electrical conduits that extended about a foot above the roof level and flooded the equipment room on the 5th floor of the building. I think they need to work on the roof drainage before the next Hello Dolly. The repeater may be back on the air Monday - 73 - Jim W5ZIT --- On Sat, 7/26/08, de W5DK [EMAIL PROTECTED] wrote: So who else drained a liter of water from a 600ft air dielectric hard line today? Who wants the video? Don w5dk
Re: Re: [Repeater-Builder] Re : RadioShack Recalls Power Su pplies Due toElectrocution a nd Fire Hazards
Using 110-120 volt outlets for 220-240 is downright stupidity IMO. I sold a monitor to a store to replece one that had been plugged into 220 volts. Was simply not feasable to repair the old one economically enough. For my wiring, I use 12/2 W ground for outlet runs, except for two that I am running 10/2 W ground. I use 14/2 W ground for lighting circuits, and only 15 amp breakers. I use 20 amp breakers for the outlet wiring. I also recall in germany, we had 230 volts, but outlets were big round 2 prong if I recall right. That was in 1956. We had to use transformers to step down to 110-120 volts. I recall the washing machine ran a bit slow, but did work. But it was 50 Hz, rather than 60 as we use in the USA. There is no good reason to use the wrong type of outlets. Saving a few cents often means paying more for errors like plugging a 110 volt item into 220 volts. does a number really fast. Undersized wire can get hot and cause a fire, and it also drops the voltage. My dad found out that with a mobile home he had. Going to a larger supply wire/cable cleared up some problems he had. Anyway, maybe best to end this topic, as it is a bit off topic... Wayne WA2YNE On Mon, 14 Jul 2008 09:38:37 -0500, Ron Wright [EMAIL PROTECTED] wrote: Wayne, I've seen some shotty wiring also. Scares you sometimes thinking what can happen especially if the wire used is too small. One note is from the Philipenes. There they use, as many other countries do, 220 VAC, but use the same 110 outlet we use here in the US. My wife is from there and we sent a TV/VCR to her family with a 220 to 110 converter which worked well. Then the converter went bad so they simply plugged the TV into their outlet. Next they were asking about parts for it and where to buy. I told them forget it for it was in house part numbers and little chance of finding them. 73, ron, n9ee/r -- Using Opera's revolutionary e-mail client: http://www.opera.com/mail/ Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * Your email settings: Individual Email | Traditional * To change settings online go to: http://groups.yahoo.com/group/Repeater-Builder/join (Yahoo! ID required) * To change settings via email: mailto:[EMAIL PROTECTED] mailto:[EMAIL PROTECTED] * 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/
