Re: [Repeater-Builder] Strange Signal on 158.275(ish)
On 4/28/2010 6:19 PM, Mike Besemer (WM4B) wrote: > Can anybody identify the signal in the attached file? It appears on 158.275 > +/- 5 KHz or so. I set my receiver to AM mode for this recording. It does > appear in FM and NFM, but not as clearly. Note that the PRF is not fixed... > it does vary over time. It is audible over a fairly large (10 - 12 miles > that I've checked so far) area. > > I doubt that is has anything to do with the pager interference I've been > having, but it does happen to be just about half of our suspected mix > frequency of around 316.6 MHz. > > Thanks, > > Mike > WM4B That signal sounds much like one I am hearing up here in Central MA on the MURS frequencies. It rotates through all 5 frequencies somewhat randomly and I hear it over a 4-5 mile radius. Fortunately, it is 20 miles from my home so it doesn't bother me on a daily basis but I do hear it during my normal commute. - Rob
Re: [Repeater-Builder] Re: E-prom Reader-Writer for Phoenix
I also agree that the KG4LNE programmer is very good. Bob is excellent with support as well. He keeps adding new features to the software and is on top of bug fixes. - Rob ve1aic wrote: > I agree Rick the kg4lne programmer is best. I bought the bare board > and software 2 yrs ago and works 100%. All parts were cheap and > available from Digi-Key. > Great to have a solid program that works on XP and can save multiple > configurations with comments in each memory channel...very handy. > > I see he is working on a 2212 emulator as well since the old EEproms > are getting hard to find. > 73, Ron > VE1AIC > > > > --- In Repeater-Builder@yahoogroups.com, "Rick & Charlotte" > <[EMAIL PROTECTED]> wrote: > >>http://www.rtzaudio.com/kg4lne/ >> >>He makes a better programmer and WINDOWS software ! >> >>I looked at different programmers .. his is by the best IMO >> >>Rick >> >>On 12 Jan 2007 at 12:16, [EMAIL PROTECTED] wrote: >> >> >>>I use a programmer I bought from RFGUYS on Ebay. I have programmed >>>Phoenix and Rangr radios with it so far. You have to remove the > > EEPROM > >>> from the radio and plug it into a small board plugged into the > > parallel > >>>port of a DOS computer, but it works like a charm. I have been >>>programming EEPROMS with mine, and only require someone sending along >>>the EEPROM and return postage to program one. Drop me a note if > > you are > >>>interested. >>> >>>73 - Jim W5ZIT >>> >>>-Original Message- >>>From: [EMAIL PROTECTED] >>>To: Repeater-Builder@yahoogroups.com >>>Sent: Fri, 12 Jan 2007 10:50 AM >>>Subject: [Repeater-Builder] E-prom Reader-Writer for Phoenix >>> >>>Looking for an inexpensive way to program my Phoenix Radios. >>>Yes Im Frugile. (better word than Cheap)Would be nice to find someone >>>willing to part with the Suitcase Programmer, but they are Scarce & >>>Expensive.Heres Hoping. >>> >>>Wesley AB8KD >>> > >
Re: [Repeater-Builder] Opening Salvo
Jim B. wrote: > KD5SFA wrote: > >>'retuned as receiver'..may be that it is tuned elsewhere >>and it was just a radio laying around to be used as a >>inexpensive receiver...by no means does it imply it is >>being used on FRS frequencies. >> >>Jon > > > Yes it does. There are no mods for FRS radios to put them anywhere other > then FRS freqs. > I'm pretty sure it's part of the type-acceptance. Just like they are not > allowed a means of connecting an external antenna. (Although that can be > modded...) There is (was) a Yahoo group that was dedicated to converting FRS to 440 and has lots of info on doing this: <http://groups.yahoo.com/group/radioexperimenter/> - Rob
[Repeater-Builder] NHRC-6 Mods?
Just checking before I install my new NHRC-6 controller... Has anyone done any interesting mods to these controllers? - Rob 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/ --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.778 / Virus Database: 525 - Release Date: 10/15/2004
Re: [Repeater-Builder] Question for the list...
There are other third party PDF creators. Google around and you'll find them. I think there is one called PDFCreator on SourceForge.Net - Rob At 06:22 PM 11/20/2004, you wrote: >To create a PDF file you will have to have the full version of Adobe >Acrobat, it is the only program that is able to creat them. There is a >software license on that one that to my knowledge has never been broken. > >Mathew > >- Original Message - >From: "Mike WA6ILQ" <[EMAIL PROTECTED]> >To: >Sent: Saturday, November 20, 2004 3:16 PM >Subject: [Repeater-Builder] Question for the list... > > > > > > I've run into a situation, and thought I'd tap the > > assembled knowledge of the group... > > > > Is there a software package available that will let > > someone drag-and-drop JPG or GIF image files > > and produce a single PDF file? > > > > The current situation is 27 individual page scans > > from a Motorola manual that needs to go into > > one PDF file - but there will be more in the future. > > > > Mike WA6ILQ > > > > > > > > > > > > > > Yahoo! Groups Links > > > > > > > > > > > > > > > > > > > > >Yahoo! Groups Links > > > > > > > > > > >-- >No virus found in this incoming message. >Checked by AVG Anti-Virus. >Version: 7.0.289 / Virus Database: 265.4.1 - Release Date: 11/19/2004 -- No virus found in this outgoing message. Checked by AVG Anti-Virus. Version: 7.0.289 / Virus Database: 265.4.1 - Release Date: 11/19/2004 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] New to the group!
At 11:07 PM 11/27/2004, you wrote: > > > > Hello Everyone, > > > > My callsign is KB4ZGO. I would like to run an Idea of mine past the > > group. My idea is like the TV show "Monstor garage" I would like to > > build a large size simplex repeater. I know it can be built! >SNIP< Yes, simplex repeaters both large and small can be built. The advantage of a simplex repeater is lower parts count including no duplexer. The disadvantage is that it takes a little bit of getting used to hearing your own transmissions being repeated back to you. I recommend the NHRC controllers. Besides being well build and economical, they will CWID your system in accordance with Part 97. Many other controllers, including the Radio Shack unit, will not. I run a Yahoo Group dedicated to simplex repeaters. It has about 300 members so there are others out there with similar interests. http://groups.yahoo.com/group/simplexrepeaters/ - Rob -- No virus found in this outgoing message. Checked by AVG Anti-Virus. Version: 7.0.289 / Virus Database: 265.4.2 - Release Date: 11/24/2004 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] GE MVP 2M Repeater
Can anyone give me an approximate value on this repeater?: GE MVP already duplexed and crystalled on 147.XXX (believe 15W) Hamtronics controller Voice IDer module Matching GE power supply Good condition, was a spare repeater. Got a friend looking to sell it and is trying to get an idea on its worth. Thanks, - Rob 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] Re: Moto CDM-750 question
--- In Repeater-Builder@yahoogroups.com, Eric Lemmon <[EMAIL PROTECTED]> wrote: > Rob, > > The input impedance of either the front panel mike input, or the > external mike input on Pin 2 of the Accessory Connector, is 560 ohms. > Both inputs are factory-set at 14mV for 3kHz deviation, but the gains > can be adjusted in CPS. > > The above information was found in Paragraph 2.3.2 of the CDM Detailed > Service Manual, 6881091C63. > Thanks Eric. I'll check with the local radio shop and see if they can adjust it for me. I don't want to start modding the patch unit at this stage, but if necessary can do so down the road. Thanks again -Rob- 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] Motorola microphone schematic
Anyone know if the schematic for an amplified Motorola Mic is available on the net? Still trying to get this autopatch going and having some real level issues. My patch just doesn't have enough drive for the radio. TIA -Rob- 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] Re: Motorola microphone schematic
--- In Repeater-Builder@yahoogroups.com, Neil McKie <[EMAIL PROTECTED]> wrote: > > Which amplified Motorola Mic? > > Neil > I think they are pretty much all similar but the ones I have are the AARMN4025B and HMN1056B -Rob- 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] Re: Motorola microphone schematic
--- In Repeater-Builder@yahoogroups.com, "hwingate" <[EMAIL PROTECTED]> wrote: > We opted to use a self powered FET circuit mounted either in the > controller enclosure or in the connector shell of the cable. Click > below for schematic. > http://webpages.charter.net/k4hal/amp.jpg > Click below for photo of the the amp mounted in a DB9 connector shell > that plugs into a NHRC-2 controller. > http://webpages.charter.net/k4hal/cable.jpg > > The amp has a modest amount of gain (around 4 or 5). We use it on all > our link/remotes and APRS. > > Henry, K4HAL > Thanks for the tips. I might have to go that route. The main reason I was looking for a schematic is that I have a bunch of mics laying around and was hoping there would be an easy way to use the amp out of one of them. -Rob- 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] Re: Motorola microphone schematic
Well the specific one is from a CDM750 but I think most operate in the same basic manner. It isn't so much an exact schematic I need but a basic operation diagram. Motorola supplies about +5V on the mic line and the mic element is also connected throgh the PTT switch somehow. What I am trying to figure out is if I can use a mic amp to boost the gain for an autopatch. It is almost looking like I may have to custom build an amp out of a FET or something like an other responder did. As to the TU-154, all I get is hits for an old Russian airliner. Thanks -Rob- --- In Repeater-Builder@yahoogroups.com, Neil McKie <[EMAIL PROTECTED]> wrote: > > Not a problem, if you can remember which radio you had it > connected to when you installed it, I probably have the manual > > Was that a FMTRU-5V ? > > Neil > > > > Mark Holman wrote: > > > > type in TU-154 for Motorola, an old remote head with a amplified mic.older > > than dirt 1964 I think. > > > > I had one or 2 my dad gave me no radio though :-( > > > > M. H. > > > > - Original Message - > > From: "Rob" <[EMAIL PROTECTED]> > > To: > > Sent: Wednesday, January 05, 2005 1:15 AM > > Subject: [Repeater-Builder] Motorola microphone schematic > > > > > > > > > > > Anyone know if the schematic for an amplified Motorola Mic is > > > available on the net? > > > Still trying to get this autopatch going and having some real level > > > issues. My patch just doesn't have enough drive for the radio. > > > TIA -Rob- > > > > > > > > > > > > > > > > > > > > > > > > > > > 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] eBay: GE Custom MVP 2M repeater
For anyone interested, I have for auction a GE Custom MVP 2M repeater, already duplexed with Hamtronics COR-3 controller, voice IDer, and power supply: <http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=5744568885> - Rob, N1NTE 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] Need a duplexer
I've got a Wacom WP-643 (6 cavities) that I've been thinking about selling. Excellent condition. Not too thrilled about packing and shipping it so local pick up only. Located in Central Massachusetts. Contact me directly if anyone is interested. - Rob Spec sheet: http://www.repeater-builder.com/wacom/wp643.pdf Kevin Custer wrote: > John J. Riddell wrote: > >> Ron, go to QTH.com ...or was it Ebay...?there is a Sinclair Q202 for >> salea very good duplexer >> Mobile units are usually 5 Mhz split...and of no value for 144 Mhz > > > You missed it: > <http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=5765282485> > > Expect to pay over $500 for a decent 600 KC split duplexer with adequate > isolation. > > Kevin Custer > 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] Standard Crystal Corp.?
Anyone have experience with Standard Crystal? (http://www.standardcrystalcorp.com/) I was just quoted $20 for a pair of crystals (RX and TX) for a bunch of UHF portables I have. Just wondering if anyone had any issues with them. - Rob 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] Simplex repeater hardware
chirs wrote: > Hi, > > I am looking for information on experiences with simplex repeaters. > > Who makes good hardware. What issues are there with simplex repeaters? > > Has anyone come up with an inexpensive "kit" or project using one of > these new micro controllers etc. NHRC make a nice kit: http://www.nhrc.net/ Also, there is a YahooGroup dedicated to this subject: http://groups.yahoo.com/group/simplexrepeaters - Rob 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] How Accurate is Radio Mobile?
My personal experience with Radio Mobile has been very good. I have done about 30 different amateur and commercial transmitter/repeater plots with this free software and it has predicted coverage exceedingly well. I have taken most of my RM plots and field verified them myself. The other side of the coin is that you do need to put some effort into learning and tweaking the program. The free price comes at a cost of some time on your part. With that said, there are some very good resources online - both at the Radio Mobile website and the YahooGroup that can assist you. If you take the time to learn the program properly, you won't be disappointed with its results for most applications. - Rob 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] FS: MT500 on 162.550
Anyone interested in a good working Motorola MT500 with 162.550 RX element installed? Includes antenna, no battery. Could be used to add WX to your repeater. $25 shipped to Continental US. - Rob 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] Midland 70-525B UHF
Cleaning the cellar and found a box of Midland 70-525B UHF radios. Currently crystalled for 458.125, no mikes or power cables. Anyone interested in these for use as links, etc.? Please contact me directly. - Rob 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] SSC Model 937
Anyone have any interest in three unused SSC Model 937 burst tone encoders, with all the cables and manuals? Cleaning the cellar and need to move them. Please reply directly. Thanks. - Rob 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] Cellar Cleaning - MT500s
Still cleaning the cellar to make room for bigger workshop and found a couple of boxes of Motorola MT500 radios. Yes, I know these are not worth much but there are some folks who like to mess around with them (http://www.theportableclinic.com/). They can also be used to make links or small portable repeaters (this keeps the posting on topic for the repeater lists ;). Use one to continuously monitor your local repeater. Elements can be a pain to get or delicate to modify, but it can be done. So, before they go out to the trash, if anyone has any interest in either the VHF-hi or UHF models, please drop me an email directly. I can strip the cases off to save on shipping costs or I can send them whole. I can fit 8 cased radios in a flat-rate priority mail container which is $8.10 to ship. No batteries or antennas, just radios available. If you are local (Central/Western MA), then pickup is available. The clock is ticking. The trash man comes the beginning of next week and then they're gone! They also make good hammers, door stops, or throw them a the neighbor's barking dog. - Rob 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] Cellar Cleaning - MT500s
The MT500s have all been spoken for. Thanks to all who responded. - Rob === Still cleaning the cellar to make room for bigger workshop and found a couple of boxes of Motorola MT500 radios. Yes, I know these are not worth much but there are some folks who like to mess around with them (http://www.theportableclinic.com/). They can also be used to make links or small portable repeaters (this keeps the posting on topic for the repeater lists ;). Use one to continuously monitor your local repeater. Elements can be a pain to get or delicate to modify, but it can be done. So, before they go out to the trash, if anyone has any interest in either the VHF-hi or UHF models, please drop me an email directly. I can strip the cases off to save on shipping costs or I can send them whole. I can fit 8 cased radios in a flat-rate priority mail container which is $8.10 to ship. No batteries or antennas, just radios available. If you are local (Central/Western MA), then pickup is available. The clock is ticking. The trash man comes the beginning of next week and then they're gone! They also make good hammers, door stops, or throw them a the neighbor's barking dog. - Rob 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] Low Power GE Phoenix...
I've got a friend who is looking to drop a couple of GE Phoenix radios down to 2-5W for a low power/low current draw application. I *assume* that the final amp transistor can be strapped but is there any additional modifications necessary to make this work? I don't want to simply turn the output pot down due to the spur potential. (I don't have a spectrum analyzer available to me to check for them.) Does anyone out there have a schematic for the factory low power versions? My friend is looking to do this on both VHF and UHF. I posted to the GE list but no one seems to have first hand knowledge of this mod. Thanks! - Rob 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] Re: Low Power GE Phoenix...
hl31943 wrote: > > I don't know if this helps, but the UHF manual says to replace Q203 > with L217, which couples the output of Q202 to the antenna switch. I > haven't found a value for L217 yet. This should give you a 2 to 5 W > output. > Howard > WB4GUD Thanks for the additional tidbit, Howard. This is where having the schematic for the factory low power version would come in handy. - Rob 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] EEproms Phoenix Radios
bazelljr wrote: > Has Anyone come up with a method of Programming Phoenix Radios without > the Suitcase Programming Unit? It has already been mentioned but I recommend GEFlash: http://www.rtzaudio.com/kg4lne/geflash.asp The software is for Win2K and XP and does a very good job with Phoenix, Rangr, and Deltas. - Rob 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] Phoenix---Lower Power
k0jxi wrote: > There was a discussion a while back about getting or modifing a 40 > watt high band phoenix to run clean at low power say 1 to 10 watts. > Did anyone come up with a idea how to do this? Was wanting to do the > same myself > > Thanks, Dale k0jxi Still haven't found anything definitive yet. There is another list member that is going to attempt an experiment on one of his units. Since he has a spectrum analyzer, he is going to try a few things to make sure the signal is clean after the mod. After staring at the schematic the other day, there is a notation stating that the P201, Q202, and Q203 are "called for at higher ASM". Don't know what ASM stands for but the assumption is that these parts are only used in the high power versions. - Rob 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] DB222 Antenna
I've got a copy of that page downloaded on my computer. If anyone is interested in it, I'll email a copy. Contact me directly. Its also cached in Google without the images: <http://72.14.203.104/search?q=cache:UCdmOuUrdBkJ:www.w4dex.com/kc4fwc/modify.htm+Modify+a+150-160+MHz+DB-222+or+DB-224+for+the+ham+band> - Rob ([EMAIL PROTECTED]) Paul Holm wrote: > I had a site bookmarked where a fellow had done this mod to a 222 and had > done quite a bit of testing on how the modified antenna worked in comparison > to others. His call is KC4FWC but his pages have disappeared. The > technique was a SS bolt and nut through the end of each folded dipole. No > changes to phasing lines. > > Paul KC0HST > > > - Original Message - > From: "Jay Urish" <[EMAIL PROTECTED]> > To: > Sent: Wednesday, March 22, 2006 7:18 PM > Subject: Re: [Repeater-Builder] DB222 Antenna > > > >>I saw a paper somewhere that described a mod using a long machine screw >>through the bottom of each element.. >> >>bzlljr wrote: >> >>>Has anyone modified an DB222 Antenna from 156mhz down to 146mhz? >>>the matching cables are 35ohn(RG83?)The distance would have to be >>>changed between the two elements & probably the 35ohm cable may have to >>>be longer. May not be practical. Has anyone done it? >>> >>>Wesley AB8KD >>> 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] Re: Anyone using LDG RVS-8 Voter?
--- In Repeater-Builder@yahoogroups.com, "Michael Singewald N1PLH" <[EMAIL PROTECTED]> wrote: > We are planning our first voted receiver and are trying to choose > between the Doug Hall and the LDG voters. I have a local repeater > using the Doug Hall, so I was looking for some feedback on the LDG. > > Thanks for any opinions and advice. Here in Kamloops BC, we have been using the RVS-8 on one of our local repeaters for a couple of years now. It has worked flawlessly the entire time. We didn't have any trouble setting it up and it has maintained its settings ever since. It is in a somewhat temperature stable environment in that the temp only changes from maybe 10C to 35C between winter and summer. We are currently running with 4 remote receivers but have 2 more planned for the not too distant future. The radios are surplus commercial Glenayre repeaters which are small modular rack mounted units. We currently run a 100W VHF transmitter and have 4 matching UHF receivers connected to a single Sinclair 310C4 UHF antenna via an 8 port amplified multicoupler. The remotes are all Glenayre VHF receivers with a mix of UHF transmitters. I also have the channel disable lines from the RVS-8 connected to the controller so that I can disable individual receivers if necessary. If I had to do it all over I would stay witht he RVS-8. It's a great little unit. If you are interested, there are a few pictures here... http://karc.ca/album/lolo/index.html 73 -Rob- Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
[Repeater-Builder] Looking for TS-32 or similar...
I'm looking for a TS-32 or similar . Will consider another model if it has "decode out" available for switching a relay on receiving a valid CTCSS tone. Please email me directly. Thanks! - Rob, N1NTE Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/ --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.548 / Virus Database: 341 - Release Date: 12/5/2003
Re: [[Repeater-Builder] Repeater Help]
I'll take some mid-splits especially if they are already xtalled up on 35.04 or 43.04 MHz! - Rob At 09:02 PM 1/6/2004 -0500, you wrote: >Now you won't get an argument out of me on that one VHF Hi and VHF low are >pretty much $0 - $25, the mid split VHF low can't even be given away, but >we were originally talking about what I believe was a UHF repeater. > >Chuck >WB2EDV >- Original Message - >From: <mailto:[EMAIL PROTECTED]>James >To: <mailto:Repeater-Builder@yahoogroups.com>Repeater-Builder@yahoogroups.com >Sent: Tuesday, January 06, 2004 8:36 PM >Subject: Re: [[Repeater-Builder] Repeater Help] > >Maybe I should rephrase that! UHF is so hard to come by, they are >excluded!! My company threw out a whole bunch of VHF Hi MastrII mobiles a >few years ago. > >James > > > > > > > > > >-- >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. > >--- >Incoming mail is certified Virus Free. >Checked by AVG anti-virus system (http://www.grisoft.com). >Version: 6.0.558 / Virus Database: 350 - Release Date: 1/2/2004 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/ --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.558 / Virus Database: 350 - Release Date: 1/2/2004
Re: [[Repeater-Builder] Repeater Help]
No, those are itinerant freqs that I hold a license for. - Rob, WPWA432 ;) At 08:01 PM 1/7/2004 -0800, you wrote: > Are you installing a low band mobile phone system? > > Neil > >Rob wrote: > > > > I'll take some mid-splits especially if they are already xtalled > > up on 35.04 or 43.04 MHz! > > > > - Rob > > > > At 09:02 PM 1/6/2004 -0500, you wrote: > > > > >Now you won't get an argument out of me on that one VHF Hi and VHF > > >low are pretty much $0 - $25, the mid split VHF low can't even be > > >given away, but we were originally talking about what I believe was > > >a UHF repeater. > > > > > >Chuck > > >WB2EDV > > >- Original Message - > > >From: <mailto:[EMAIL PROTECTED]>James > > >To: > <mailto:Repeater-Builder@yahoogroups.com>Repeater-Builder@yahoogroups.com > > >Sent: Tuesday, January 06, 2004 8:36 PM > > >Subject: Re: [[Repeater-Builder] Repeater Help] > > > > > >Maybe I should rephrase that! UHF is so hard to come by, they are > > >excluded!! My company threw out a whole bunch of VHF Hi MastrII mobiles a > > >few years ago. > > > > > >James > > > > > > > > > > > >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/ > > > > >--- >Incoming mail is certified Virus Free. >Checked by AVG anti-virus system (http://www.grisoft.com). >Version: 6.0.558 / Virus Database: 350 - Release Date: 1/2/2004 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/ --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.558 / Virus Database: 350 - Release Date: 1/2/2004
Re: [Repeater-Builder] Need GE Phoenix Programmed
GE Phoenix / IRLP hookup info: http://www.qsl.net/n1nte/ge_phoenix_irlp.html - Rob, N1NTE At 08:36 AM 2/6/2004 -0500, you wrote: >I use GE Phoenix for quite a few things. They should work just fine for >IRLP. I don't have any of my papers here, but if you do a search on >google you should be able to find the wiring for them. > >They are active high cas. > >Corey > > > Have several UHF band GE Phoenix radios that I'd like to use at link > > hardware for a repeater. I know nothing about them. They work on the > > programmed frequency, about 25 watts and 0.35 uV for full > > quieting. Are these "good" radios in terms of general operation for > > link service? If so, I am looking for someone to ship the proms off to > > so I can get them programmed. I also have a GE MLS I think, 2 channel > > mobile with a slant face. This looks like a newer model. Can anyone > > out there program this, too? > > > > Thanks, > > Derek KC4FWC > > > > > > > > > > > > > > Yahoo! Groups Links > > > > > > > > > > > > > > > > >Yahoo! Groups Links > > > > > > > >--- >Incoming mail is certified Virus Free. >Checked by AVG anti-virus system (http://www.grisoft.com). >Version: 6.0.564 / Virus Database: 356 - Release Date: 1/19/2004 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/ --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.564 / Virus Database: 356 - Release Date: 1/19/2004
[Repeater-Builder] Repeater Loan Agreement?
Hi all, I am going to loan one of my repeaters to a local ham club. Does anyone have an agreement/contract written up for something like this? I've got some basics in mind but looking for things I didn't think of. Thanks! - Rob, N1NTE 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/ --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.639 / Virus Database: 408 - Release Date: 3/22/2004
Re: [Repeater-Builder] Repeater Loan Agreement?
Thanks Eric, all good points. I am lending the repeater to the local club because they want to try 440 in addition to their current 2M machine. They have close ties with the site owner (club member) and that helps. Basically, I have a spare UHF repeater sitting on the shelf and I'd prefer it to be in use. Other than that, my obligation will likely end there and the club will maintain it through the loan period. I agree on clarification and I plan on putting it all in writing so that everyone remains friends. Thanks - Rob, N1NTE At 03:08 PM 3/28/2004 -0800, you wrote: >Rob, > >You are to be commended for your generosity. It may be a good idea to >clarify the reason for this loan, to avoid serious misunderstandings in >the future. Some issues that may need to be addressed are: > >1. What call sign will the repeater have? This determines who must >take responsibility for the proper coordination of a frequency pair. It >also identifies who is the Control Operator. >2. What insurance is required, and who will pay the premiums when they >come due? >3. Who will maintain the equipment? Does he/she have the appropriate >test equipment and knowledge? >4. Who will pay the electric power and telephone access bills, if >applicable? >5. How will access to the repeater equipment be controlled? Who will >have keys and control codes? >6. What steps are taken to eliminate intermodulation with other RF >sources at the site? >7. Are the geodetic position and elevation of the antenna's radiation >center accurately known? Don't assume that other users at the site are >using the correct coordinates on the NAD83 datum. >8. Since you are lending rather than donating this repeater equipment, >what control over it do you intend to exercise? Moreover, for what >responsibilities and obligations will you continue to be liable? > >If the repeater will be sharing space at a commercial tower site, make >sure that all agreements are in writing. You'd be surprised at the >number of Amateur repeaters that were installed by a verbal agreement, >but were later kicked off the site because a new owner or manager >couldn't find any record of the sharing agreement. > >73, Eric Lemmon WB6FLY > >Rob N1NTE wrote: > > >I am going to loan one of my repeaters to a local ham club. Does anyone >have an agreement/contract written up for something like this? I've got >some basics in mind but looking for things I didn't think of. > > > > > >Yahoo! Groups Links > > > > > > > >--- >Incoming mail is certified Virus Free. >Checked by AVG anti-virus system (http://www.grisoft.com). >Version: 6.0.639 / Virus Database: 408 - Release Date: 3/22/2004 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/ --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.639 / Virus Database: 408 - Release Date: 3/22/2004
Re: [Repeater-Builder] Re: Phelps Dodge Model 458 antenna specs?
Got it! Thank you to everyone who replied. http://www.rfsworld.com/RFSGlobal/pdfs/specsheet_682296814504012004032427.pdf - Rob At 04:03 PM 3/31/2004 -0800, you wrote: >Do a search for PD458, I think this is what you are looking for Phelps >Dodge was bought by Celwave, was bought by RFS. > > >PD458 Series >Storm Chief Rugged Broadband Omni > >Joe > >Repeater-Builder@yahoogroups.com wrote: >Message: 10 >Date: Wed, 31 Mar 2004 12:17:31 - >From: "n1nte" >Subject: Phelps Dodge Model 458 antenna specs? > >Can anyone help me with the specs for a Phelps Dodge Model 458 >fiberglass antenna? I'm looking for gain and possible downtilt spec. >Couldn't find anything in Google to help. > >Thanks! > >- Rob > > > > > > >Message: 11 >Date: Wed, 31 Mar 2004 05:03:26 -0800 >From: Neil McKie >Subject: Re: Slightly off topic ... > > >Thank you all for your information, > >73, > >Neil - WA6KLA > > >Andy Brinkley wrote: > > > > Neil - > > > > Pin #1 (blue) = common > > > > Pin #2 (orange)= 58 watts > > > > Pin #3 (brown) = 100 watts > > > > you can see the manual at: > > > > http://www.galls.com/DOCUMENTS/SK023_PA300.pdf > > > > 73's > > > > Andy > > > > -- > > NC Certified Firefighter III / Instructor II / EMT-A > > FCC Licensed Technician / Amateur Call NC4AB > > http://www.brinkleyelectronics.com > > > > > > > > > > >Yahoo! Groups Links > > > > > > > > > > > > > > >-- >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. > >--- >Incoming mail is certified Virus Free. >Checked by AVG anti-virus system (http://www.grisoft.com). >Version: 6.0.639 / Virus Database: 408 - Release Date: 3/22/2004 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/ --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.639 / Virus Database: 408 - Release Date: 3/22/2004
[Repeater-Builder] Looking for low power itinerant UHF repeater
Just putting out a feeler on this list in case anyone has one... == Looking for the following in working condition: - An old Ritron or similar low end repeater - 5-20W - single PL encode/decode - mobile duplexer Ideally on one of the following frequency pairs: 451.800/456.800 464.500/469.500 464.550/469.550 This is a short term, non-mission critical project on a shoestring budget. ;) If you have anything similar to above or have a bargain priced repeater on another freq, please contact me directly. Thanks! - Rob ([EMAIL PROTECTED])
[Repeater-Builder] FS: GE Phoenix VHF 2ch.
Hi all, I've got a number of GE Phoenix 2 channel VHF transceivers that make good link radios, IRLP/Echolink, dedicated repeater monitors, weather receivers, etc. Before they go up on eBay, I'd wanted to offer them here. Condition: Good, cases have minor scratches typical of used equipment, a bit dusty but not bad. Some power cables and mikes available. I can program these for you if necessary. They have been running about $45 each on eBay. Shipping will be via US Priority Mail and I can fit up to two in a flat rate box for $9.00. If interested, email me directly and make an offer. Will consider trades for other radio items. - Rob [Email: [EMAIL PROTECTED]
Re: [Repeater-Builder] GE Phoenix VHF 2ch.
Two combo numbers available: N5UU2W25BB N5P11 (PSX-SE) Some of the PSX-SE radios have the X2212 and few have the X2444 EEPROMS. - Rob Eric Lemmon wrote: > Rob, > > What are the Combination Numbers for these radios? > > 73, Eric Lemmon WB6FLY > > > -Original Message- > From: Repeater-Builder@yahoogroups.com > [mailto:[EMAIL PROTECTED] On Behalf Of Rob > Sent: Friday, April 04, 2008 11:16 AM > To: Repeater-Builder@yahoogroups.com > Subject: [Repeater-Builder] FS: GE Phoenix VHF 2ch. > > Hi all, > > I've got a number of GE Phoenix 2 channel VHF transceivers that make > good link radios, IRLP/Echolink, dedicated repeater monitors, weather > receivers, etc. Before they go up on eBay, I'd wanted to offer them here. > > Condition: Good, cases have minor scratches typical of used equipment, a > bit dusty but not bad. Some power cables and mikes available. > > I can program these for you if necessary. They have been running about > $45 each on eBay. Shipping will be via US Priority Mail and I can fit up > to two in a flat rate box for $9.00. If interested, email me directly > and make an offer. Will consider trades for other radio items. > > - Rob > > > > > > > Yahoo! Groups Links > > > > >
Re: [Repeater-Builder] More on Copper theft
Steve wrote: > > Anyway, why not just wrap your hard-line with burglar alarm tape, > connected to a dc relay. This would trip a dc horn or siren (old police > sirens work well or 28 volt locomotive horns) and halogen lights. A nice > small camera to record the bad guys crapping their pants and away you > go. I've got a couple of IP network cameras going up on eBay soon. If anyone is interested in them before they get listed, please see this page for details: <http://www.n1nte.net/cams.html> - Rob
Re: [Repeater-Builder] Rackmount clips/screws
Check out Parts Express: $4.99 for qty=10 <http://www.partsexpress.com/pe/showdetl.cfm?Partnumber=262-968&vReviewShow=1&vReviewRand=5472998> - Rob n9wys wrote: > My 2¢ worth... > > I have heard these referred to as "Speed Nuts". McMaster-Carr shows the > ones I am familiar with in their catalog, calling them “U-style clip-on > nuts”. (I found them by doing a search for "speed nuts".) These are > designed to use sheet metal-type screws, which is what I usually see in > radio cabinet rails. > > Mark - N9WYS > > -Original Message- > From: Repeater-Builder@yahoogroups.com On Behalf Of no6b > > At 8/22/2008 23:50, you wrote: >> The clips are called tinerman clips and I have found them at auto parts >> stores but I think they are a little spendey. > > The ones that are threaded for machine screws are called cage nuts. > > http://en.wikipedia.org/wiki/Cage_nut > > 10-32 would be the best thread size to use, since it's a defacto 19" rack > mount standard. I've also seen racks tapped with 12-24, but that screw > size isn't as easy to find. > > Bob NO6B > > > > > > > Yahoo! Groups Links > > > > > No virus found in this incoming message. > Checked by AVG - http://www.avg.com > Version: 8.0.138 / Virus Database: 270.6.7/1629 - Release Date: 8/23/2008 > 1:16 PM > > > 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/
[Repeater-Builder] FS: CES 5200 (qty=2)
Hi all, I've got two CES 5200 pulled from a working system. If anyone has a need for them, please email me directly. - Rob
[Repeater-Builder] R100 stays keyed up
Hi all, I have a Motorola R100 2-10w UHF repeater on the bench. It was working fine (pulled from of working service) until a frequency programming change (only 25 kHz). Now it stays keyed unless I change the repeater disable switch on the board. It does pass receiver audio normally but the repeater never drops the carrier. In fact it keys up immediately upon power on. I disconnected the receiver to make sure it nothing was causing the transmitter to trigger. I am not too familiar with troubleshooting these repeaters as they have always worked well in the past. Am I looking at a codeplug corruption issue or is it a coincidental hardware issue. Any tips or sharing of common failures appreciated. Thanks. - Rob
Re: [Repeater-Builder] R100 stays keyed up
DCFluX wrote: > Some repeaters have the option of letting the VCO run continuiously > and they key the power amp circuits, The benefit is the PTT rise time > goes from 50-100mS down to like 4mS. The disadvatage is that any > radios in close proximity to the repeater hear the VCO running due to > leakage, is that the case here? Do you actually have full power out of > the repeater all the time? > > Also you might try removing the programing cable from the repeater as > it appears to share the PTT line. > It is full output (10W) as measured on the Telewave meter. I did remove the programming cable when I did the power cycling. Thanks, - Rob
Re: [Repeater-Builder] Narrowbanding
Here in Washington State our agency is running on 7.5 channels using 11K2F3D/11K2F3E. Frequency coordination has to be a little creative as the channels of course overlap. Need to keep the repeaters far enough apart such the signal level of the overlap is of no consequence to the adjacent channel. This is much the same concept used in CA years ago when two meters was switched 15 kHz channel centers. Rob K7TGU - Original Message - From: "MCH" To: Sent: Monday, August 02, 2010 13:16 Subject: Re: [Repeater-Builder] Narrowbanding >I was wondering about that myself. > > A couple of comments on the other aspects: > > 1. I see this as falling flat on its face. May as well mandate D-STAR. > > 2. How are the commercial people fitting SNFM in 7.5 kHz channels as > they have been doing on VHF? > > Joe M. > > Chuck Kelsey wrote: >> How wide is it? >> >> Chuck >> WB2EDV >> >> >> - Original Message - >> From: "wd8chl" >> To: >> Sent: Monday, August 02, 2010 10:58 AM >> Subject: Re: [Repeater-Builder] Narrowbanding >> >> >> > ...or that think the US DTV standard fits in a 6 MHz >>> channel...NOT! >> >> >> >> >> >> >> >> Yahoo! Groups Links >> >> >> >> > > > > > > > Yahoo! Groups Links > > >
RE: [Repeater-Builder] Re: Solid State VHF PAs
For what its worth, I run a 300 watt solid state Henry repeater amp on my 6 meter repeater, its actually running at 200 watts and its been cruising along for 4 years now without a problem. I changed out the 12 VDC thermostatically controlled muffin cooling fans with 120 VAC units that come on with PTT signal and continue to run for 3 minutes after the repeater shuts down. I have zero complaints, it runs cool and quite, is clean, and proven to be rugged and reliable, for me its been a good value for the cost of the unit. If your interested contact Henry Amp directly, as they offer a good ham discount that is not reflected in their prices listed on their web site. To the other persons comment of 200 watts seems excessive, maybe or maybe not depending on the repeaters application and transmitter location/site owner's installation requirements. Running any solid state or tube amp at full rated output generally has a detrimental effect on its life span of being able to maintain full rated output power; running an amp 1 to 1.5 dB below its rated output allows the amp to greatly increase its life span at rated output power. Factor in a dual circulator (-1 dB), six cavity duplexer (-2.8 dB), two BP cavities (-1 dB), feed line/jumper loss (-1.2 dB), total system losses -6 dB coupled with an antenna gain of +3 dB you can easily have a 100 watt PA that nets only 50 watts ERP. Running the amp at a full tilt 100 watts will likely result in the repeaters ERP being down around 40 watts after several years of operation as the PA softens over time. A 200 watt amp would give you 100 watts ERP, which under most conditions is what a 2 meter repeater gets coordinated for, unless your in a co channel or border situation that requires an ERP reduction. Running a 200 watt PA at 1 to 1.5 dB below its rated power in the installation described above would give you very close to the generally coordinated 100 watt ERP and allow the PA to have a much extended life span. Every repeater situation is different, so PA power has to be taken into account based on coordination ERP, installation requirements, available power, your budget, and antenna gain vs. coverage requirements. Good Luck, Rob K7EI -Original Message- From: wn1b8 [mailto:[EMAIL PROTECTED] Sent: Tuesday, November 02, 2004 12:55 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Re: Solid State VHF PAs My Error. It is not 200 watts but rather 100 watts. Scott --- In Repeater-Builder@yahoogroups.com, Neil McKie <[EMAIL PROTECTED]> wrote: > > I can only wonder why the need for what seems to me is excessive > power? > > Thank you, > > Neil - WA6KLA > > wn1b8 wrote: > > > > Greetings, > > > > As a result of our recent power supply failure we are accessing our > > options. > > > > Thanks to all of you who have replied to my search for a TPN1041B > > power transformer. A couple of the responses suggested contacting > > Peter Dahl for a quote on repairing or replacing the failed > > transformer. I did do that and would like to report that the > > response I received (from none other than Peter, himself) was > > extremely prompt and helful. He answered all of my questions > > regardless of their simplicity or relevance. > > > > Anyway, one of the options we would like to explore is conversion to > > a solid state PA deck. So, I would like to tap the collective > > wisdom of the list and hear what brands and models people like, and > > conversely, which to avoid. This is a 2 meter repeater and its PA > > needs to be in the 200 watt range with 10 to 15 watts drive. > > > > Thanks, and 73. > > > > Scott Madison, WN1B/8 > > > > > > 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] WTB: Helper Instruments SM-512 Service Manual
I know this is a bit off-topic, but, the service manuals for these little things are pretty tough to find. I'm happy to pay any shipping/copying or whatever? Thanks, Rob W2IO Erie, CO 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] Moto CDM-750 question
Can anyone tell me what the input impedance for the accessory Mic input is on a CDM-750 UHF or how much drive it takes to get 3KHz deviation? I am trying to hook one up to use for an autopatch and cannot get enough drive from the patch to be useful. I suspect an impedance mismatch. I don't have any doc for the things and Moto's web site isn't any help. Thanks -Rob- 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] Help ID a Motorola Rcvr
Hoping someone can help ID a receiver chassis for me and tell me what manual I will need for it. The chassis ID tag has model # XTPN1139A and the receiver board itself has TLD8271A. It believe this is a UHF receiver. I checked the repeater-builder web site but the ID chart there seems to be mainly for mobile chassis. TIA -Rob- 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] VHF GE Mastr II mobile question
I believe they are only rated at 110 Watt max, I've never seen anything rated at 120 watts. A mobile heat sink is rated for something like a 20/80 duty cycle, Tx/RX respectively. I can tell you from experience, that you can run it reliably at around 50-60% of full power IF you give it LOTS of Efficient cooling. I run three high speed high output 4.5 inch muffin fans on my repeater; with the radio horizontal have 2 fans directly below and blowing a high volume of air up through the heat sink. I added a third fan to feed air into and an exhaust from the bottom of the case directly under the PA transistor mounting studs. Make sure fans come on immediately with PTT and they should continue to run until several minutes following repeaters final unkey. Rob K7EI -Original Message- From: Chris Peterson [mailto:[EMAIL PROTECTED] Sent: Friday, January 28, 2005 3:02 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] VHF GE Mastr II mobile question Hi all, How much power can a 120W Mastr II mobile put out and safely be run continuous duty? Also, what are people doing for added cooling on these, if anything? Thanks, Chris Yahoo! Groups Links ___ The information contained in this message and any attachment may be proprietary, confidential, and privileged or subject to the work product doctrine and thus protected from disclosure. If the reader of this message is not the intended recipient, or an employee or agent responsible for delivering this message to the intended recipient, you are hereby notified that any dissemination, distribution or copying of this communication is strictly prohibited. If you have received this communication in error, please notify me immediately by replying to this message and deleting it and all copies and backups thereof. Thank you. 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] VHF GE Mastr II mobile question
I believe they are only rated at 110 Watt max, I've never seen anything rated at 120 watts. A mobile heat sink is rated for something like a 20/80 duty cycle, Tx/RX respectively. I can tell you from experience, that you can run it reliably at around 50-60% of full power IF you give it LOTS of Efficient cooling. I run three high speed high output 4.5 inch muffin fans on my repeater; with the radio horizontal have 2 fans directly below and blowing a high volume of air up through the heat sink. I added a third fan to feed air into and an exhaust from the bottom of the case directly under the PA transistor mounting studs. Make sure fans come on immediately with PTT and they should continue to run until several minutes following repeaters final unkey. Rob K7EI -Original Message- From: Chris Peterson [mailto:[EMAIL PROTECTED] Sent: Friday, January 28, 2005 3:02 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] VHF GE Mastr II mobile question Hi all, How much power can a 120W Mastr II mobile put out and safely be run continuous duty? Also, what are people doing for added cooling on these, if anything? Thanks, Chris Yahoo! Groups Links ___ The information contained in this message and any attachment may be proprietary, confidential, and privileged or subject to the work product doctrine and thus protected from disclosure. If the reader of this message is not the intended recipient, or an employee or agent responsible for delivering this message to the intended recipient, you are hereby notified that any dissemination, distribution or copying of this communication is strictly prohibited. If you have received this communication in error, please notify me immediately by replying to this message and deleting it and all copies and backups thereof. Thank you. 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] Daniels Electronics Manuals
I'm looking for manuals for the Daniels Electronics AC-3, AC-2, VT- 2, VR-2, UR-2, UT-2, SM-3B, SM-2 and any others I can find. Daniels says that these are past the ten year support period and are no longer supported. They don't even keep manuals that they will sell to the public. Can any one point me at a source for these manuals. Thanks Rob 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] Help with Wacom WP-639 Duplexer
Kevin Thanks for tips, I had download the VHF tune up PDF but not the other pdf. I was surprised he had such problems as I had bought two sets of duplexers, one was a DB products until which he said failed as they had 2 notches and the second set being the wacom which he said wouldn’t tune down. When you say tune them upside down could you explain a little further for me as this is my first attempt to put a repeater on air. As I understood all the cavities are the same or are there two types? Also we have made our only cables to join the units together using RG214. I’m assuming all the cables should be ¼ taking into account the velocity factor or the cable? Bob -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Kevin Custer Sent: 03 June 2005 12:51 To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Help with Wacom WP-639 Duplexer m1ror wrote: Hello All This is my second posting but I'm not sure if my first attempt made it to the list. I bought a set of what appear to be good condition Wacom WP-639 (144-174Mhz) Duplexers originally tuned for 156Mhz. A friend has attempted to align the filters but is having problem aligning the notch down to 145Mhz.The problem he tells me is he can only get the notch down to 148Mhz with the Invar rods pushed all the way in. He has made up new patching loom and still the same result.Has any body played with these and could offer any advice? Have him swap the ports and try again, in other words, tune the duplexer backwards from the way it is presently tuned using the opposite sides for the receiver and transmitter. Minimum frequency separation happens with the rods all the way in, which leads me to believe he is attempting to tune the duplexer upside down, on the 'wrong' notch; there are two notches, as explained below This article explains the basic principal for the Wacom WP-641 and 639 style pass notch network. While specifically written about the 641, the effects are the same for the 639, however, the notch depth won't be as deep with the 639 as what is stated in the article: Complete tuning directions are available from this page: If you still encounter difficulty after attempting the switch-a-roo, email us back Kevin 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] Help with Wacom WP-639 Duplexer
Frazer I don’t have a call book and could not find your email address as it was protected. Could you email me directly with a contact number [EMAIL PROTECTED] Bob -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Fraser Stuart Sent: 03 June 2005 13:51 To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Help with Wacom WP-639 Duplexer Hi Bob Re filters if you want a hand give me a call,, rgds Fraser G8FEZ (in the book) m1ror <[EMAIL PROTECTED]> wrote: Hello All This is my second posting but I'm not sure if my first attempt made it to the list. I bought a set of what appear to be good condition Wacom WP-639 (144- 174Mhz) Duplexers originally tuned for 156Mhz. A friend has attempted to align the filters but is having problem aligning the notch down to 145Mhz. The problem he tells me is he can only get the notch down to 148Mhz with the Invar rods pushed all the way in. He has made up new patching loom and still the same result. Has any body played with these and could offer any advice? Bob G6CKK 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] Help with Wacom WP-639 Duplexer
Kevin Thanks for the explanation this all makes sense now. I’ll be playing later today and I’ll post my findings. Thanks once again for the pointers Rob -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Kevin Custer Sent: 03 June 2005 23:27 To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Help with Wacom WP-639 Duplexer Hi Rob, Rob Martin wrote: Kevin Thanks for tips, I had download the VHF tune up PDF but not the other pdf. I was surprised he had such problems as I had bought two sets of duplexers, one was a DB products until which he said failed as they had 2 notches and the second set being the wacom which he said wouldn’t tune down. When you say tune them upside down could you explain a little further for me as this is my first attempt to put a repeater on air. The Wacom WP-639 is a BpBr design, meaning Band Pass - Band Reject. The duplexer is specifically built to pass a particular frequency, and reject another. The components of the duplexer determine if the notch falls above or below the pass frequency. In the case of a regular duplexer, one side is HPLR (high pass low reject) and the other is LPHR (low pass high reject). Many times, from the factory, a duplexer has its ports marked "Transmitter" and "Receiver", but those terms are meaningless unless the duplexer is used in the same band segment as it was tuned from the factory. Let's look at it this way, say you have a repeater on 146.625 minus 600 kHz. This repeater would be HPLR on the transmitter and LPHR on the receiver. Follow me? Now, lets look at 147.195 plus 600 kHz. This repeater would be LPHR on the transmitter and HPLR on the receiver, or exactly opposite. This means if you bought a duplexer that was originally built for 146.625 - and retuned it to 147.195 +, you'd have to ignore the references to port identification "TX" and "RX" and connect them inversely. If you tried to tune the HPLR to LPHR, the duplexer wouldn't tune; it would likely be more lossy on the pass and the notches wouldn't fall into place. (isn't that what he's complaining about?) This is why I hate the reference (especially on a 2 meter duplexer) of Transmitter and Receiver ports, as HPLR and LPHR always make sense, no matter frequency or orientation of the repeater split. As I understood all the cavities are the same or are there two types? Two types, HPLR and LPHR Also we have made our only cables to join the units together using RG214. I’m assuming all the cables should be ¼ taking into account the velocity factor or the cable? The cabling might have to be changed to optimize the notch depths, but he needs to get a little closer before worrying about that. Bob -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:Repeater-Builder@yahoogroups.com] On Behalf Of Kevin Custer Sent: 03 June 2005 12:51 To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Help with Wacom WP-639 Duplexer m1ror wrote: Hello All This is my second posting but I'm not sure if my first attempt made it to the list. I bought a set of what appear to be good condition Wacom WP-639 (144-174Mhz) Duplexers originally tuned for 156Mhz. A friend has attempted to align the filters but is having problem aligning the notch down to 145Mhz.The problem he tells me is he can only get the notch down to 148Mhz with the Invar rods pushed all the way in. He has made up new patching loom and still the same result.Has any body played with these and could offer any advice? Have him swap the ports and try again, in other words, tune the duplexer backwards from the way it is presently tuned using the opposite sides for the receiver and transmitter. Minimum frequency separation happens with the rods all the way in, which leads me to believe he is attempting to tune the duplexer upside down, on the 'wrong' notch; there are two notches, as explained below This article explains the basic principal for the Wacom WP-641 and 639 style pass notch network. While specifically written about the 641, the effects are the same for the 639, however, the notch depth won't be as deep with the 639 as what is stated in the article: Complete tuning directions are available from this page: If you still encounter difficulty after attempting the switch-a-roo, email us back Kevin 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] Help with Wacom WP-639 Duplexer
All Today I have spent a couple of hours sweeping the cavities and come to the conclusion that they are all high pass low reject. (Originally of tx152 & rx158) Looking at the cavities 25mhz either side of my desired frequency RX145.1625Mhz TX 145.7625Mhz I can a second notch but this never comes within 2Mhz of the pass with the invar rod all the way in. They tune perfectly for pass high notch low. So it looks like I have a set of useless cavities unless anyone knows what the physical difference is between the High Pass Low Reject and High Reject Low Pass. Can I make any modifications? Bob G6CKK -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Kevin Custer Sent: 03 June 2005 12:51 To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Help with Wacom WP-639 Duplexer m1ror wrote: Hello All This is my second posting but I'm not sure if my first attempt made it to the list. I bought a set of what appear to be good condition Wacom WP-639 (144-174Mhz) Duplexers originally tuned for 156Mhz. A friend has attempted to align the filters but is having problem aligning the notch down to 145Mhz.The problem he tells me is he can only get the notch down to 148Mhz with the Invar rods pushed all the way in. He has made up new patching loom and still the same result.Has any body played with these and could offer any advice? Have him swap the ports and try again, in other words, tune the duplexer backwards from the way it is presently tuned using the opposite sides for the receiver and transmitter. Minimum frequency separation happens with the rods all the way in, which leads me to believe he is attempting to tune the duplexer upside down, on the 'wrong' notch; there are two notches, as explained below This article explains the basic principal for the Wacom WP-641 and 639 style pass notch network. While specifically written about the 641, the effects are the same for the 639, however, the notch depth won't be as deep with the 639 as what is stated in the article: Complete tuning directions are available from this page: If you still encounter difficulty after attempting the switch-a-roo, email us back Kevin 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] Data Signal ATI-300 manual?
Can anyone help me locate a manual or accessories for a Data Signal, Inc ATI-300 Automatic Telephone Interconnect? Thanks Rob 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] Re: MSF5000 Questions
MSF5000's with "CLB" in the model number are programmed via EEPROM with the R-1801 suitcase programmer and some other stuff (the suitcase only does some of the PROMS). Those with "CXB" in their model number are programmed with the MSF RSS. You can convert between the two by changing the controller and making a couple of jumps to supply voltage to the newer controller. To the earlier question, the C73CXB-7106BT is a RSS programmable, VHF 90-110 watt unit. It will tune the 2m ham bands. Rob W2IO --- In Repeater-Builder@yahoogroups.com, "Tony lelieveld" <[EMAIL PROTECTED]> wrote: > To my knowledge, MSF5000 radios are RSS programmable. > 73, Tony VE3DWI. > > -Original Message- > From: Repeater-Builder@yahoogroups.com > [mailto:[EMAIL PROTECTED] On Behalf Of Adam C. Feuer > Sent: July 14, 2005 08:07 > To: Repeater-Builder@yahoogroups.com > Subject: [Repeater-Builder] MSF5000 Questions > > Hello All, > > I have obtained a very good condition MSF5000 repeater. The Model # is > C73CXB-7106BT. I'm wondering if this is RSS programmable or whether a prom > has to be burned. > > Also wondering if it will receive on 144.57 and transmit on 145.170. > > Any help is greatly appreciated and Thanks! > > > Adam N2ACF > > > > > > > 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] Static / desense problems
Don, There have been a lot of messages over last couple months regarding using 9913 / LMR 400 type cables in full duplex operations, my take on the overall responses by the majority of those who wrote in: don't use these types of cables in full duplex as they lead to the very problem your describing, due to noise generated in cable shielding materials. You likely get some additional feedback on this matter, but many users of these types of cables wrote in describing the same issues you have. Rob K7EI -Original Message- From: sledman11 [mailto:[EMAIL PROTECTED] Sent: Tuesday, November 11, 2003 10:57 AM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Static / desense problems Looking for idea's on tracking down an intermittent static and desense problem I am have with a 2 meter repeater. The set up is as follows - ge mastr II base, LMR 400 coax (about 50 ft) into a diamond F23A antenna mounted on a chimney with 22' of black pipe mast. The location is the local firehouse which has a antenna mounted on a tower about 70' feet away from the repeater antenna. We also have a 220 Mhz, 4 element beam mounted on the back pipe mast about 12' under the repeater antenna. This is for echolink. Have turned off the 220 Mhz link with no affect on the problem. Have not been able to determine a pattern to the problem (ie cold, wet windy etc). When it happens it can sometimes completely wipe out a signal that was full quieting. Have checked the antenna and all is tight, dry and no problems that I can see visually. Including the coil and capacitor at the bottom of the antenna. Thought about running jumpers between the antenna mount, mast, 2 meter antenna and the 220 Mhz antenna so all are at ground potential. Do feel it is something outside that is causing the problem and not the radio or duplexers. Can create static on a weak signal coming into the repeater by banging on the mast. All idea's welcome. Thanks, Don WW2N Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/ Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
RE: [Repeater-Builder] Corner Reflectors and UHF Repeaters
Your obviously going to get a very modified coverage pattern with a F/B ratio of 5 to 10 dB better than a typical yagi, but about the same forward gain as a yagi antenna. I presume you need or desire the coverage pattern, or need the F/B ratio for protection, or perhaps you have the antenna and are looking for a use. Should be no problems in full duplex service as long as the unit isn't damaged; depending on reflector material (solid metal pan vs. multiple elements or wire mesh screen) you could have some wind/ice loading considerations to keep in mind. I use 10 dB yagi antennas on some UHF full duplex link antenna systems with zero problems, I don't see where a corner reflector should be any different, other than possibly F/B ratio. Test it out, put some power in the antenna and run some local tests !! Rob K7EI -Original Message- From: Steaven Rogers, AF4ZJ [mailto:[EMAIL PROTECTED] Sent: Wednesday, November 12, 2003 1:23 PM To: Repeater-Builder@yahoogroups.com; [EMAIL PROTECTED]; [EMAIL PROTECTED] Subject: [Repeater-Builder] Corner Reflectors and UHF Repeaters Does anyone use or have tried to use a corner reflector on a UHF machine? Anyone care to share their thought on the use of this antenna. I know some antennas work great in normal operation, but when they are put into duplex service they croak. Just not sure about corner reflectors. Thanks Steaven, AF4ZJ IRLP Node 7520 Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/ Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
RE: [Repeater-Builder] HP 8920 Service Monitor Help
I'd check the classified ads in Communications or Two Way Radio Dealer magazines or other trade periodicals, there use to be a number of adds offering repair and calibration services for service monitors. It still may not be a cheep repair, but its bound to be much less than HP factory repair costs. Rob K7EI -Original Message-From: Scott Zimmerman [mailto:[EMAIL PROTECTED]Sent: Monday, November 17, 2003 12:29 PMTo: Repeater-Builder@yahoogroups.comSubject: [Repeater-Builder] HP 8920 Service Monitor Help My HP 8920 Service monitor has suffered an overpower condition to the Antenna IN connector for apparently it's last time (Accidental of course!!). Does anyone have a "real" component level service manual on this Monitor? I have a manual that calls itself an "assembly level repair guide". That's all fine and good. Following it has told me that the problem is in the input/output section (A23). A call to HP for a replacement module sat me on the floor for a few hours!! They want as much for that module as I paid for the whole monitor!!! I'm sure it's a relatively simple fix with (maybe) a common part, but without any board level docs. it's hard to say. I have disassembled the module to look for any burnt traces or parts blown off the board, but everything looks OK. I ran a few simple ohm meter checks, but with a multi-layer board, I can't tell where some of the traces are supposed to go. Has anyone run into this before or know of a decent person to deal with when it comes to repair. I really on this monitor on a daily basis, and it's completely usable through the other 2 ports, so I'm not really enthused about sending it off to the repair shop for a few months. Scott M. Scott ZimmermanZimmerman ElectronicsAmateur Radio Call N3XCC612 Barnett RoadBoswell, PA 15531Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service. Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
RE: [Repeater-Builder] Micor UHF TX channel element/crystal issue
You said, "Any insight is appreciated." This might be to late for you, but help some others. 1. This is the very reason I stopped using the more "economical" crystal companies. While their prices look attractive, there is usually just to much rework, lost time, frustration, delays, and poor performance. 2. Send the ICOM / Channel Element in with your order and pay the cost for xtal installation, testing, and compensation, I'm now 28 for 28, worked right out of the box the first time, zero problems or failures using this approach and dealing with ICM. Yes, it costs more, but its been done right the first time, every time. Good Luck, Rob K7EI -Original Message- From: kk2ed [mailto:[EMAIL PROTECTED] Sent: Wednesday, December 03, 2003 11:06 AM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Micor UHF TX channel element/crystal issue Hi all, I have a peculiar situation here - I just received two new crystals from Bomar (NJ) to refreq' two elements to 440 ham freqs. The channel elements are virgin KXN1052's as prepared by Motorola. I installed the crystals, and after attempting to adjust the warp capacitors, both elements come up by about 12-15KHz on the high side. I then went and placed aprox. 12-15pf caps in parallel with the warp cap, which allowed me to trim the element on frequency, with a swing of + or - 7 KHz or so, to allow for adjustments either way as the crystals age. Now the fun part - The original Moto factory 460 crytals yielded a maximum deviation setting of 8KHz or so, so there was no problem setting the IDC for clipping at 4.5 or 5KHz. HOWEVER, the new crystals will only achieve a Maximum Deviation of 3.75KHz or so, even with the IDC control at max. I then pulled the caps I placed in parallel with the warp cap, and although the elements were 12KHz high in operating freq, I was able to obtain a max deviation of 4.5KHZ, but still not 5KHz as desired. Question - is it possible that the crystals were cut with too much parallel capacitance to start with, then my adding the caps to get them to center freq just compounded the issue? Is the max freq deviation factor of the crystal proportional (or inversely proportional) to the crytal's internal capacitance? My calls to Bomar have been less than fruitful. I am still waiting to speak to their "tech". They have offered to replace the crystals, but I am afraid that the next set will be the same, as they seem to think they are making them correctly. Any insight is appreciated. Eric KE2D Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/ Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
RE: [Repeater-Builder] use of Bp/Br duplexer as 2 channel combine r
It is possible, but performance is going to depend on a number of factors that will determine the needed isolation between the to two PAs, i.e. TX freq spacing, TX power, Circulator performance rating, etc. You will want to make sure you have Circulators w/ LPF, (likely double circulators with sizable load resistors) on the PA output of each TX before the duplexer input. To minimize generating an objectionable levels of IM products when both PAs are operating simultaneously, make sure your circulators are well tuned to their operating frequency. You will have check the antenna output (both PAs keyed) with a spectrum analyzer to insure your not generating/radiating IM products up and down the spectrum. Rob K7EI -Original Message- From: n1ofj [mailto:[EMAIL PROTECTED] Sent: Friday, December 19, 2003 7:40 AM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] use of Bp/Br duplexer as 2 channel combiner Has anyone ever used a Bandpass/reject duplexer as a transmit combiner. As an example, using one port set up as a pass on Frequency A, reject on frequency B, and the other port to reject frequency A and pass Frequency B? Any thoughts on this would be appreciated. Thanks, Dave N1OFJ 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: http://docs.yahoo.com/info/terms/
RE: [Repeater-Builder] Repeater TVI Problem
I've had a number of these issues in commercial 2-way / paging systems / ham repeaters I've maintained over the past years and the problem has always been a leak in the CATV system cabling somewhere, they use the ham band freq for TV. While there is always suppose to be isolation between the house taps on the CATV drops to homes, they may or may not be sufficient, once your signal get into the CATV system their broadband amps pass it along to others. I've seen all kinds of stuff you wouldn't believe people would do, but it happens. The last problem I had was a home owner who connected their cable TV connection to a coat hanger to radiate TV signal to another room in their house. A 1/4 KW VHF paging transmitter a half block away gained access into the CATV system (coat hanger seems to be a fairly effective antenna at VHF) and wiped out cable TV for about 10 city blocks. Rob K7EI -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Sent: Thursday, January 01, 2004 1:17 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Repeater TVI Problem My 2 meter link on my repeater is causing TVI. This happens only on cable ch 18 on Charter Cable here in Yakima, WA. Any one have any ideas? This is only on the houses, say with-in 1/2 mile. Rod 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: http://docs.yahoo.com/info/terms/
RE: [Repeater-Builder] help with Sinclair duplexer r101gc
You can contact Sinclair directly for the instructions if you need them, but they will likely tune up OK. Best tool is a service monitor with tracking generator, but you can use a number of alternate methods as described / documented on the Repeater Builders Web site. Rob K7EI -Original Message-From: randy [mailto:[EMAIL PROTECTED]Sent: Wednesday, January 07, 2004 10:32 AMTo: Repeater-Builder@yahoogroups.comSubject: [Repeater-Builder] help with sinclair duplexer r101gc Hello im a amature radio opperator and was given a set of helical notch filters. their r 101gc sinclair and look brand new.they are 8 cans I want to put them on the ham band rx 52.000 tx 52.500 is that possable ? they are tuned now to factory settings tx 48.980 and rx 49.42 looks like the high split set. thats close to where i need . do i half to mess with the coax stubbs? the guy tod me they would ( just tune right up) i havent tried aney thing with them yet .i thought id ask first i see that the split is abought the same 500 khz but the direction is reverced can i just swap the cables inside to fix that and just tune em up? the coax stubs in side is the only thing i dont under stand. aney help at all would be really nice im sure ysome one have used these in the ham band before .the serial number is 921619 may be a 92 model? tried to find tunning instructions on the web but no luck. also tried emailing sinclair but they wont e mail me back. thought ide try you all before i try to call them on the phone. i have never seen aneything like these before and cant find aney thing on the web other that helax notch cavities made from hard line. tx 48.98 rx 49.42 i want them on tx 52.500. rx 52.000. its for the morgantown ky club repeater the guy also gave us a micor repeater to use with the r101gc and its working good now thank you for you time and aney info randy kisthardt [EMAIL PROTECTED] AG4ZQ 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. 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] Re: stacking dipole them in nall pount no duplexer
i cant beleave this no one can help --- jammyyy_2000 <[EMAIL PROTECTED]> wrote: > > > hi all > > can any on give me any ideas on stacking > coax dipole in it`s nall pount. > http://www.qsl.net/ve3sqb/ > the coax dipols work realy good and match up to 50 > ohm > with a flat match real easy first try." and yes > cheap" > > it is for gmrs 462mhz repeater on a field trip > "no duplexer" > useing 5 w to 25 w what ever i can get away with. > > i was told that stacking them two meters should be > ok > the rx on the top and the tx at bottom "is this > right?" > > i would think a peace wood would be ok , but how to > run the > coax from the rx antenna on top down pass the tx > antenna ? > > > has any one ever try this befor,can you tell me how > it > work out, > > any help would be wolcome > > thanks > rob > > > > > > > > > > > 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/ > > __ Do you Yahoo!? New Yahoo! Photos - easier uploading and sharing. http://photos.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/
Re: [Repeater-Builder] Re: stacking dipole them in nall pount no duplexer
hi all can any on give me any ideas on stacking coax dipole in it`s nall pount. http://www.qsl.net/ve3sqb/ the coax dipols work realy good and match up to 50 ohm with a flat match real easy first try." and yes cheap" it is for gmrs 462mhz repeater on a field trip "no duplexer" useing 5 w to 25 w what ever i can get away with. i was told that stacking them two meters should be ok the rx on the top and the tx at bottom "is this right?" has any one ever try this befor,can you tell me how it work out, any help would be wolcome thanks rob --- "Jim B." <[EMAIL PROTECTED]> wrote: > What subject? I couldn't read his post. > > Chuck Kelsey wrote: > > > Whenever this subject has come up before, the > suggestion has been "trial and > > error" by checking the receiver for desense. > > > > Chuck > > WB2EDV > > > > > > > > - Original Message - > > From: "ROB FELSTEIN" <[EMAIL PROTECTED]> > > To: > > Sent: Monday, January 19, 2004 4:25 PM > > Subject: [Repeater-Builder] Re: stacking dipole > them in nall pount no > > duplexer > > > > > > > >>i cant beleave this no one can help > >>--- jammyyy_2000 <[EMAIL PROTECTED]> wrote: > >> > >>> > >>> hi all > >>> > >>> can any on give me any ideas on stacking > >>> coax dipole in it`s nall pount. > >>> http://www.qsl.net/ve3sqb/ > >>> the coax dipols work realy good and match up to > 50 > >>>ohm > >>> with a flat match real easy first try." and yes > >>>cheap" > >>> > >>> it is for gmrs 462mhz repeater on a field trip > >>> "no duplexer" > >>> useing 5 w to 25 w what ever i can get away > with. > >>> > >>> i was told that stacking them two meters should > be > >>>ok > >>> the rx on the top and the tx at bottom "is this > >>>right?" > >>> > >>> i would think a peace wood would be ok , but how > to > >>>run the > >>> coax from the rx antenna on top down pass the tx > >>>antenna ? > >>> > >>> > >>> has any one ever try this befor,can you tell me > how > >>>it > >>> work out, > >>> > >>> any help would be wolcome > >>> > >>> thanks > >>> rob > >>> > > > > > > > > > > > > > > > > > > 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: > http://docs.yahoo.com/info/terms/ > > __ Do you Yahoo!? New Yahoo! Photos - easier uploading and sharing. http://photos.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/
Re: [Repeater-Builder] Re: stacking dipole them in nall pount no duplexer
rsg are you trying to be some kind off asshole no one needs to here from you if you are --- [EMAIL PROTECTED] wrote: > > > Didn't read any better the second time around. > figure my eyes will stop bleeding in a day or > three.. > ~RSG~ > > > On Mon, 19 Jan 2004 14:02:33 -0800 (PST) ROB > FELSTEIN > <[EMAIL PROTECTED]> writes: > > hi all > ><<< re-send and re-re-re- quotes deleted >>>> > > > > > --- "Jim B." <[EMAIL PROTECTED]> wrote: > >> What subject? I couldn't read his post. > >> > >> > Chuck Kelsey wrote: > >>> > >>> Whenever this subject has come up before, the > >>> suggestion has been "trial and > >>> error" by checking the receiver for desense. > >>> Chuck > >>> WB2EDV > >>> > > > > - Original Message - > > > > From: "ROB FELSTEIN" <[EMAIL PROTECTED]> > > > > To: > > > > Sent: Monday, January 19, 2004 4:25 PM > > > > Subject: [Repeater-Builder] Re: stacking > dipole > > > them in nall pount no duplexer > > > > > > > > > > > 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/ > > __ Do you Yahoo!? New Yahoo! Photos - easier uploading and sharing. http://photos.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/
Re: [Repeater-Builder] Shack clean-up time
hi thar what are you asking for the uhf repeater ? rob --- "Kevin Berlen, K9HX" <[EMAIL PROTECTED]> wrote: > I have several base stations that I need to move as > storage space is becoming > a problem. I would entertain cash offers, but would > prefer a trade. Shipping > will be a problem, so I would be willing to drive up > to 150 miles one-way to > deliver this equipment and complete a deal. Items > are: > > GE Mastr II 330 watt Low Band base currently on > 47MHz. This unit has what > is known as the "IDA Control Shelf". It has two > additional LB Mastr II > monitor receivers, also on 47 MHz. Condition is > about a 7 out of 10. I have > a NOS 4CX250 final amp tube I will throw in with > this station. I have a > complete > manual for this rig. > > GE Mastr IIe 100 watt Low-Band base also on 47 MHz. > Operating condition of > base sation is unknown. Also equipped with two aux > Mastr II monitor receivers > on 47 MHz and a DB rx multicoupler. This station > also comes with a manual. > > Motorola Micor UHF 75 watt factory community > repeater. This repeater is in > the 450-470 MHz range. This unit comes with a T-1504 > duplexer. Someone > has removed the duplexer form its normal rack panel > and drilled large holes > in the cabinet top. The duplexer is installed with > the tuning shafts sticking > down into the cabinet and the cans upright on top of > cabinet. I have another > empty cabinet the correct size I would throw in with > this station. I may be > able to come up with a manual for this one. > > Items that I am looking for include a Motorola Micor > TLD1692 140-150MHz > continous duty PA, a Hickok 600A tube tester, and a > mobile HF transciever > with six meters similar to an Alinco DX-70TH or an > Icom IC-706MKIIG. > > Pictures are available upon request. If anyone is > interested, please contact > me directly. I live in southwest Indiana. Thanks for > your interest and 73, > > Kevin, K9HX > > > > > > > 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/ > > __ Do you Yahoo!? New Yahoo! Photos - easier uploading and sharing. http://photos.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/
Re: [Repeater-Builder] need a manual for Midland 70-905B UHF Base stn./Repeater
dont tell me you just got it off ebay --- sal al <[EMAIL PROTECTED]> wrote: > hi all i m looking for a manual for Midland 70-905B > UHF Base stn./Repeater,and i need find Crystal to > buy > > __ > Do you Yahoo!? > Yahoo! SiteBuilder - Free web site building tool. > Try it! > http://webhosting.yahoo.com/ps/sb/ > > > > > > > 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/ > > __ Do you Yahoo!? New Yahoo! Photos - easier uploading and sharing. http://photos.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/
RE: [Repeater-Builder] Thermostaticaly controlled fan cctt please ?
I went this road a few years ago using the small button thermal switches (Switch Craft - etc.) that are available in a variety of on-off temperatures settings, but it didn't prove overly successful. The small thermal switches have to be heat sinked to the PA, so you have to route AC for the fan up to some location on the PA heat sink, this is messy, not easy to implement, and requires extra AC (hum) wiring running around the station. The switches don't have an impressive life cycle and many started going intermittent and erratic in a year or so. The new approach I implemented is to use a solid state relay, they require nothing more than a logic level to drive them, which is easy to find about anywhere in the station or controller (most controllers have logic outputs that can be controlled by writing a simple macro command controlled by the PTT command). This isn't temp controlled, its time controlled, so fan comes on with PTT command from the controller, fan continues to run for 4 minutes after PTT drops. ( I use this control scheme for PA and general cabinet fan cooling operations on all my repeaters using SCOM 7K controllers) This has proven much more reliable over time than temp. control and you will likely find the fans can do many more on-off cycles during their usable life than the thermal switches. Solid state relays last a lifetime and cost less than the thermal snap disc switches in many cases. The fan starts PA cooling process w/o waiting for PA to heat up before cooling can start and then try and play catch up; a 3 to 4 minute post PTT run time on the fan is plenty of time to allow for more than sufficient cool down of any residual heat; this is where a thermal control switch can often cycle on-off several times depending on the proximity of the thermal switch-fan-main heat sources, and size/density of the heat sink. The power consumption of a good muffin fan is about 4 to 8 watts, so even if you have more run time using the timer approach it isn't going to amount to 20 cents of electricity a month and you end up with something from my experience which has proven much more reliable in the long run. A side benefit to having the fan come on with PTT other than PA cooling is it supplies immediate air movement inside the cabinet for some cooling to the power supply, circulators, etc. So hope this is some help or insight for your application - Good Luck Rob K7EI -Original Message- From: dave_g7uzn [mailto:[EMAIL PROTECTED] Sent: Tuesday, April 06, 2004 9:02 AM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Thermostaticaly controlled fan cctt please ? Hi All, Can anyone point me in the right direction for a site with a variable temp controlled fan cctt please for use on mobiles/base stns please ? Any help appreciated.Cheers Dave UZN 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] Thermostaticaly controlled fan cctt please ?
The primary reason not to run fans 24/7 is dirt, as most radio repeater sites are generally less than clean environments, we all have to go clean the crud out of the fans, heat sinks, power supplies, etc. on a regular bases. The more the fan runs the faster the dirt and crud builds up inside the station, a build up of crud on the PA heat sink acts as insulation and degrades the fans ability to provide proper cooling. So from my prospective its primarily a house keeping issue, but its mostly an issue of personal preference and the repeaters environment. If you have battery back up with DC fans running continuously as you describe, it will have an impact on your overall battery back up run time. While DC fans may not be much current draw it all adds up and will impact your repeater's usable battery back up run time, although it may not amount to more than a couple of tenths of an hour reduction. Rob K7EI -Original Message- From: Q [mailto:[EMAIL PROTECTED] Sent: Tuesday, April 06, 2004 2:07 PM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Thermostaticaly controlled fan cctt please ? Why not just run 'em 24/7? I use DC fans exclusively and have run them constantly for a quarter century. It gets cooled properly even when on battery backup! Why bother turning them on or off? - Original Message - From: <[EMAIL PROTECTED]> To: Sent: Tuesday, April 06, 2004 2:49 PM Subject: RE: [Repeater-Builder] Thermostaticaly controlled fan cctt please ? > I went this road a few years ago using the small button thermal switches > (Switch Craft - etc.) that are available in a variety of on-off temperatures > settings, but it didn't prove overly successful. The small thermal switches > have to be heat sinked to the PA, so you have to route AC for the fan up to > some location on the PA heat sink, this is messy, not easy to implement, and > requires extra AC (hum) wiring running around the station. The switches > don't have an impressive life cycle and many started going intermittent and > erratic in a year or so. > The new approach I implemented is to use a solid state relay, they require > nothing more than a logic level to drive them, which is easy to find about > anywhere in the station or controller (most controllers have logic outputs > that can be controlled by writing a simple macro command controlled by the > PTT command). This isn't temp controlled, its time controlled, so fan comes > on with PTT command from the controller, fan continues to run for 4 minutes > after PTT drops. ( I use this control scheme for PA and general cabinet fan > cooling operations on all my repeaters using SCOM 7K controllers) > This has proven much more reliable over time than temp. control and you will > likely find the fans can do many more on-off cycles during their usable life > than the thermal switches. Solid state relays last a lifetime and cost less > than the thermal snap disc switches in many cases. The fan starts PA > cooling process w/o waiting for PA to heat up before cooling can start and > then try and play catch up; a 3 to 4 minute post PTT run time on the fan is > plenty of time to allow for more than sufficient cool down of any residual > heat; this is where a thermal control switch can often cycle on-off several > times depending on the proximity of the thermal switch-fan-main heat > sources, and size/density of the heat sink. > The power consumption of a good muffin fan is about 4 to 8 watts, so even if > you have more run time using the timer approach it isn't going to amount to > 20 cents of electricity a month and you end up with something from my > experience which has proven much more reliable in the long run. A side > benefit to having the fan come on with PTT other than PA cooling is it > supplies immediate air movement inside the cabinet for some cooling to the > power supply, circulators, etc. > So hope this is some help or insight for your application - Good Luck > > Rob K7EI 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] 2 repeaters - 1 Antenna
Your going to have to give us more information RE: all the TX and RX frequencies involved, how much power is everyone running, is the highway dept. willing to accept some degradation in their TX power (there is no free lunch on combining). How you couple two transmitters will be driven by freq. spread and power outputs, what make/model of antenna are they using, will it make the freq spread and handle the power? Does the highway department have a two-way shop doing their radio work or do they have their own radio communications group ? If your going to be tapping into a commercial radio system your likely going to have to have somebody doing the work that has all the tools and experience needed to make the highway department comfortable with the whole process and outcome. Rob K7EI -Original Message- From: Dan [mailto:[EMAIL PROTECTED] Sent: Tuesday, April 20, 2004 10:39 AM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] 2 repeaters - 1 Antenna Hi everyone. I'm looking for input and information on the following project I am exploring. I may have to oppertunity to multicouple a UHF 440 repeater with our countys highway dept UHF repeater antenna. I have found some information on the Rx multicoupler but still looking for information on how to couple the 2 Tx. If anyone has experience and info please feel free to email me. Thank you for your time... Dan, KC0CAP 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] (unknown)
These types of radios generally won't make that kind of freq spread, if tuned for 146 you may not always get factory spec performance with every unit, but it will likely be close. You may be able to get some degraded operation at 152 (couple microvolt receive and low TX power, but very unlikely you could push it to 159 and have anything. Rob K7EI -Original Message- From: rtoplus [mailto:[EMAIL PROTECTED] Sent: Wednesday, April 21, 2004 8:50 AM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] (unknown) Greetings OK...OK...this is off topic, I'm sorry. I posted the same thing in the Motorola group and I'm not sure it'll be answered there so I thought I'd post it here too. I have acquired a bunch of ht440's and ht90's. Currently crystled for service in the 154 mhz area. I checked out batlabs (and did a google search with no evail), and me not being too electronicly inclined (I can tune a radio, just didn't understand some of what they presented), am wondering if these radios can be rock'd for (and work well) around 146 mhz. And if so, in the same radio, these are 4 channel units, would they support a couple of channels at 146 and a couple at 152/159 mhz. I'm not gonna replace a bunch of parts...it ain't worth my time...but if all is needed is the correct crystal and alignment, then that's ok. I like the "brick" feel of these radios and I'd like to put them into service if feasable. I have a service manual also by the way. Ya'll please forgive me for posting here, but I hate to see "good" equipment going to waste in my basement. thanks Bob, GMRS WPVV845, Amateur KG4WAD, LMRS WPXC892 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] Question on Mitrek conversion
TX - RX Isolation in mobiles converted to repeaters can sometime be a problem, so anything you can do (like changing the stock coax to a mini-hard line) is going to likely be a plus, especially at higher power levels. Rob K7EI -Original Message-From: Bruce Harvey [mailto:[EMAIL PROTECTED]Sent: Tuesday, May 04, 2004 10:56 AMTo: Repeater-Builder@yahoogroups.comSubject: [Repeater-Builder] Question on Mitrek conversion Hi, I do not recall seeing a "commandment" saying that the existing white coax coming from the antenna relay to the receiver and to the transmitter should definitely be replaced with something better. Is it double shielded cable? I realize that in its first life the Mitrek mobiles were not duplex. In my first two conversions I used small hardline to replace the coax entirely, but maybe this is not necessary? Thanks Bruce, ve1ii 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] Sharing a receive site
The shared receive antenna is the easy part of the proposal and as others indicated there are a couple of ways to do this. Even a cheep mobile duplexer would likely work for feeding the two VHF receivers, as they are a reject only duplexer and as your both receiving there is really nothing to reject. You get a three port device that are all 50 ohms, if you can handle the added 1 to 1.2 dB insertion loss. If you can't handle any added loss then you may want to look into a receiver multi-coupler or build one, but you better have some sort of decent BP window filter (1.67 MHz split on your two receiver frequencies) between the antenna and any pre-amps you might consider adding to the receive system. If your on a commercial site there are likely VHF users on the site, so you'll need so good isolation so they don't clobber your pre-amp when they are transmitting. You may also have a problem with the two 440 Links that you both run, unless both links are TX only. If you have a requirement to combine these two UHF links you'll have to give us more info on freq, power, etc. Rob K7EI -Original Message- From: Joe Montierth [mailto:[EMAIL PROTECTED] Sent: Tuesday, June 01, 2004 2:17 PM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Sharing a receive site --- [EMAIL PROTECTED] wrote: > Hi, all -- > > I am on the technical committee of an amateur > repeater club. A club in the next county has > approached us to ask about sharing one of our 2m > receive sites with them. It's a commercial site and > we are there at the pleasure of the owner, who is > willing to accommodate them and thinks that there > are no bad mixes. > > The other club has asked to share our 2m receive > antenna and feedline, and has volunteered to install > whatever equipment we specify so that our site's > performance is not degraded. > > While this sounds doable to me, I am more of a > digital guy than an RF guy. What should we install > in order to do this "the right way" without > degrading our site's performance? > > Our system transmits on 146.88 MHz and receives on > 146.28. > We use a Motorola receiver (I think it's a Micor). > The other club's system transmits on 147.345 and > receives on 147.945. > Both have links in the 440 band. > Neither system will transmit on 2m from this site. > > > Any advice or recommendations as to architecture, > equipment that works (or doesn't work!), or points > to be included in a Memorandum of Understanding, > would be appreciated. > > Regards, > Bob Koblish > > [EMAIL PROTECTED] > > It all depends on what kind of RF in involved at that site, but one way to do it (and there are many) would be to take your feedline and go through a DCI filter to attenuate the out of band stuff that might be there. Then run into a good pre-amp (ARR, Angle Linear, etc) and split the output to the two RX. You could use a commercial unit, or construct one yourself for a couple of bucks, or just put a tee on the preamp and run a cable to each RX (this may or may not work well, depending on impedences and cable lengths involved, but its easy to try). You'll want to have a fairly low noise figure preamp, and fairly decent gain (15-20 dB) to get best performance out of each RX. Link to DCI: http://www.dci.ca/?Section=Amateur Joe __ Do you Yahoo!? Friends. Fun. Try the all-new Yahoo! Messenger. http://messenger.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] VHF spectras
Hi Doug, Just curious about the particulars regarding the Spectras i.e. power out, type of control head, price, etc. Thanks, Rob K7TGU -Original Message- From: doug [mailto:[EMAIL PROTECTED] Sent: Saturday, June 05, 2004 8:56 AM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] VHF spectras if anyone on the list is interested in purchasing some Motorola Spectra VHF remote mount radios (146-174) please message me OFF THE LIST. and a note for kevin --- isn't there still a paypal account for rbtip?? if there is, lemme know so i can kick a donation to u doug kc5bmj Yahoo! Groups Links --- Incoming mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.693 / Virus Database: 454 - Release Date: 5/31/2004 --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.693 / Virus Database: 454 - Release Date: 5/31/2004 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] VHF spectras
My apologies ... This was not intended for the list ... Rob -Original Message- From: Rob Lee [mailto:[EMAIL PROTECTED] Sent: Saturday, June 05, 2004 11:07 AM To: Repeater-Builder@yahoogroups.com Subject: RE: [Repeater-Builder] VHF spectras Hi Doug, Just curious about the particulars regarding the Spectras i.e. power out, type of control head, price, etc. Thanks, Rob K7TGU -Original Message- From: doug [mailto:[EMAIL PROTECTED] Sent: Saturday, June 05, 2004 8:56 AM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] VHF spectras if anyone on the list is interested in purchasing some Motorola Spectra VHF remote mount radios (146-174) please message me OFF THE LIST. and a note for kevin --- isn't there still a paypal account for rbtip?? if there is, lemme know so i can kick a donation to u doug kc5bmj Yahoo! Groups Links --- Incoming mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.693 / Virus Database: 454 - Release Date: 5/31/2004 --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.693 / Virus Database: 454 - Release Date: 5/31/2004 Yahoo! Groups Links --- Incoming mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.693 / Virus Database: 454 - Release Date: 5/31/2004 --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.693 / Virus Database: 454 - Release Date: 5/31/2004 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] 2 meter amps
I've run Henry 1/4 KW repeater amps on two machines for over 4 years, both are running strong, zero problems !! Rob K7EI -Original Message- From: Jed Barton [mailto:[EMAIL PROTECTED] Sent: Tuesday, June 15, 2004 9:23 AM To: repeater-builder@yahoogroups.com Subject: [Repeater-Builder] 2 meter amps OK guys, Just got a dream sight. Now we need an amp. What will it be TPL or henry? I have a maggiore r1 repeater pushing about 35 watts. Ideas? Tanks, Jed 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] Moving MSR-2000 UHF Receiver below 445 MHz?
In a recent move I've lost my documentation on moving the MSR-2000 primary UHF receiver down below 445 while maintaining its rated performance. Does someone have the info handy? I'd hate to have to redevelop it on my own. Thanks in advance, Rob W2IO 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] How to drop voltage using diodes
Silicon Diodes drop .6 volt per diode, so 3 will drop you to 13.7 VDC, the diode current rating needs to equal or exceed the current of the 15.5 volt power supply. A point to consider is how stable is the 15.5 voltage output based on load demand, i.e. if the batteries are very discharged such that they draw the supply voltage down during a recharge cycle you may encounter an issue with using the diodes, as they will reduce the available supply voltage during a deep charge condition. Rob K7EI -Original Message- From: Ken [mailto:[EMAIL PROTECTED] Sent: Monday, July 26, 2004 9:37 AM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] How to drop voltage using diodes Hi, I have a power supply with output voltage of 15.5v dc. I would like to install diodes on the power cable to drop the voltage to @13.8v dc. What size/type diodes would I need and where can I obtain it? I have backup batteries and I think the 15.5v is too much for the charging circuit. Thanx Ken 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] Need VHF LPF for Circulator
I'm looking for a VHF Low Pass Filter that goes on the output of a standard ole Celwave or DB Products circulator/IM Panel. Pls. contact me directly if you have one for sale. Rob K7EI 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] Need Quintron /Glenayre RL-450 manual
I'm in need of a manual for a Quintron / Glenayre RL-450 UHF receiver. This unit is a highly modified UHF GE MVP, but has internal AC power supply and 2875 decoder/flat audio boards. I'm willing to pay a reasonable fee for original or photocopied manual. Pls. contact me off line if you can help. Rob K7EI 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] Getting frequencies for UHF repeater eithe r commercial or ham?
Title: Message FCC for commercial ( fill out application ) and your regional frequency coordinator for a ham repeater pair. Understand that only a couple of various commercial services qualify for VHF repeater licenses, so unless you qualify your going to be UHF or Low Band. For a ham repeater, do your home work first with a ARRL repeater directory to see what pairs might be available in your area, then contact your freq. coordinator for the paper work needed to request a freq pair. -Original Message-From: Dakota Summerhawk [mailto:[EMAIL PROTECTED]Sent: Tuesday, August 03, 2004 5:30 AMTo: Repeater-Builder@yahoogroups.comSubject: [Repeater-Builder] Getting frequencies for UHF repeater either commercial or ham? Ok so now that I have some understanding my belt for getting a repeater, what do I need wto do for getting either a commercial frequency or ham radio allocation for the unit? can I go to the FCC web site and request a pair? Thanks Dakota 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] Hi All, Help with Building Cavity
When you say filters and refer to loop length I assume your referring to cavity filters, BpBr, Bp, Notch or the like. There is a whole lot more to a cavity design/performance than just loop length and shape, a whole lot more!! If you plan to build enough cavities for a repeater duplexer your an ambitious man, as this will be a monumental task to build temp. stable, cavities that have the overall performance and temp. stability needed for reliable repeater performance and operation; it will require some very special materials (like threaded invar rod) and access to a well out-fitted machine shop. If your really set on committing the time and resources to building your own cavities, I'd suggest you purchase at least one commercially manufactured cavity to use as a template to construct the others. You might want to consider the purchase of used cavities or a duplexer off eBay or another source of used equipment for your repeater, it could be a lot cheaper in the long run. Good Luck, -Original Message- From: mrhquin [mailto:[EMAIL PROTECTED] Sent: Tuesday, August 03, 2004 11:29 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Hi All, Help with Building Cavity Hi My friends and I are building a repeater. The task of building the filters has fallen to me. I have been reading several sites of interest and some say the loops are very critical in length and shape. but I can't find any formula to work out the right length or shape for any given frequency. If someone can Help I would be gratefull. Regards Harly 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] Getting frequencies for UHF repeater eithe r commercial or ham?
Given your situation and only two users on the system, you may want to consider something in the family radio services or other none licensed radio services, I think they are called something like FMRS and GMRS. You will never get a commercial license for a repeater with only 2 users; remember commercial 2-way is for business use only, not ham type of chit-chat. Unless your in an extremely remote location commercial 2-way licenses are almost assured to be sharing a commercial freq pair with other users, exclusive use of a freq. went away 20 years ago unless your a governmental or life safety agency. -Original Message- From: Dakota Summerhawk [mailto:[EMAIL PROTECTED] Sent: Wednesday, August 04, 2004 1:51 PM To: Repeater-Builder@yahoogroups.com Subject: RE: [Repeater-Builder] Getting frequencies for UHF repeater either commercial or ham? OK, I do have a ham license and the repeater is going to be for just two users me and my wife who doesn't have a license for ham right now. Thinking about Commercial service and the upkeep would be done by me so its not really going be making any money per se. Dakota -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Sent: Wednesday, August 04, 2004 12:23 PM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Getting frequencies for UHF repeater either commercial or ham? Well having an understanding of repeaters is one thing. Being licensed within a service that allows you to put up a repeater is something else. Unless you are a ham radio operator putting up your own repeater (and you have the funds to support this) or a club repeater which the club will support you may want to think about the business end of this. Supply and Demand. What is in your area and Who's going to use it? How much will it cost to provide the service ? How much income will it provide ? (can it pay for it's self ? and your efforts?.) and then just the rest of the usual business questions how to build the business and keep it operating. hope this helps .bob The best thing to hit the Internet in years - Juno SpeedBand! Surf the Web up to FIVE TIMES FASTER! Only $14.95/ month - visit www.juno.com to sign up today! Yahoo! Groups Links --- Incoming mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.726 / Virus Database: 481 - Release Date: 7/22/2004 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] Mastr II Audio
The J3 and J4 are for a high pass audio filter board to plug into (i.e. used in CTCSS stations to strip tone from RX audio) , as I recall J1 and J2 are 10 volt and ground. However, I don't have my manual here at the moment to verify. The GE Mastr II service manual clearly details these (and all other) options and circuits on the board. It sounds as if you don't have a manual, if your planning on doing any interconnection into the Rmt audio board or anything else in a Mastr II I'd strongly suggest you get some documentation in front of you, it is essential to have both a schematic and board layout drawing when your working, otherwise your in the dark or just guessing half of the time! The Rmt. audio board can support a good number of controller interface functions, as RUS, RX audio, TX audio, regulated 10 volt are all present on this board. There are also a number of jumper options available for various functions. -Original Message-From: NØATH [mailto:[EMAIL PROTECTED]Sent: Friday, August 06, 2004 9:01 PMTo: Repeater-Builder@yahoogroups.comSubject: [Repeater-Builder] Mastr II Audio Here is a real test for the GE guru's - I have the repeater audio card from my Mastr II in my hand ( actually an extra one ) GE # PL19D41721ØG1 Rev. B I can see on it there are J1 - J2 - J3 - J4. Is there any body that can tell me what each of these pins are? J3 and J4 are both 3 pin plugs - 1 and 2 are single pin - I was wondering if I could put a spare controllers audio directly into this board at possibly one of these pin connections. I would like to wire this controller so that it could be used with the GE control boards and plugged in when I wanted to unhook my main controller for service or whatever. Any takers on this one? Dave - NØATH 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] DB-224 Tower Side Mounting
Tower distortion is always an issue when side mounting on a tower, the larger the tower face the larger the distortion to the pattern. Yes mounting at greater distances off the tower will effect pattern / reduce distortion from tower, but increase the mechanical torque the mount and antenna can place on the tower, as well as the level of difficulty in mounting the antenna. At 1/2 wave spacing off a Rohn 25 results in minimized distortion to an omni pattern VHF, with a 42 inch face your going to likely have to get out 1 wave length in order to minimize the distortion, that is out a long way. Yes you can phase two 224s together, a bit of a spendy fix if you have to buy the second antenna and/or pay rent for tower space, but it can be done. This approach may fix some of your close in holes off the back of the tower, but will have a negative impact on total range as compared to the current single antenna. While your antenna pattern has some holes, it also has some coverage areas that receive a positive benefit from the current power and antenna arrangement, if you half the power to feed a second antenna the ERP off the existing antenna is going to be cut to 1/2 of its current level. This reduction in ERP and antenna performance could have a negative effect for some users in some areas. Phasing two verticals together can certainly have an impact on radiation pattern, that impact will be the result of the spacing between the two antennas, each antenna and the tower, and the real unknown factor of how much shielding the tower provides between the two antennas. You will likely have to run a field test to see if there is indeed benefit. I've done this on commercial two-way applications and had fairly good omni results on a 72" tower with the antennas mounted right up against the tower, but on opposite sides. Good Luck, Rob K7EI -Original Message-From: Joel Mele [mailto:[EMAIL PROTECTED]Sent: Monday, August 16, 2004 2:03 PMTo: Repeater-Builder@yahoogroups.comSubject: [Repeater-Builder] DB-224 Tower Side Mounting Has any one solved the problem of omni directional pattern distortion when side mounting a DB-224 on a tower ? I've side mounted several DB-224's using the DB 5001 side mount kit. The results agreed with the radiation pattern supplied by Decibel Products, i.e. a distortion of the omni pattern and signal attenuation off the tower leg that the antenna is mounted on. Will different mounting distances off the tower leg improve the omni pattern ? Can a 224 be mounted on each side of the tower with a phasing harness or power divider ? BTW, the tower I'm using has a 42" face. Any ideas will be appreciated. TNX...Joel W4SLH 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] For Sale
Jim, I'm interested in some 19 inch rack mount fan units; are the fans mounted horizontal or vertical ?? What are you asking for each unit ?? Rob -Original Message- From: Jim [mailto:[EMAIL PROTECTED] Sent: Sunday, August 22, 2004 11:42 AM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] For Sale I am abandoning my repeater project. My loss = your gain. These items are not on Ebay yet, and i hope not to have to. I have for sale the following items: 19" Rack mount fan tray - 4 Heavy Duty 172x51mm Cooling fans 260cfm each. AC powered 19" Rack mount fan tray - 6 Fans I believe they are 70cfm each. AC powered 19' Rack mount Quintron Monitor panel w/ Telewave UHF power monitor Wacom WP-678 UHF Duplexer Regency MCCU017R UHF Repeater /w 40watt Amp, Norcomm NC103 tone board, & RC1000 Controller Motorola Micor TLE-1317A 100watt UHF Amplifier 19" Rack mount Telewave 300watt UHF Isolator All reasonable offers will be considered. First come first serve. Please email me off of the list if you are interested. Jim KB2WMP 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] VHF Vari-Notch Duplexers - 2" x 2" x 4" ???
The duplexer that you have may not be a "Vari-Notch" unit. Your description sounds like a "30 series" unit (Model number will start with a 30 e.g. 30-36-01A) The 30 series VHF duplexers are specially designed to work with repeaters that exhibit problems when connected to high selectivity duplexers. This design uses three standard notch type filters on the transmitter side which provide excellent noise filtering while maintaining a relatively low VSWR over a wide frequency range. This helps minimize transmitter sensitivity to cable length between the duplexer and the transmitter and also reduces the potential for transmitter spurs. The receiver portion of the duplexer incorporates three pseudo bandpass filters to give isolation to the transmit carrier and reduce interference and intermodulation caused by other nearby transmitters. Because different types of cavity filters are used for the transmit and receive sides of the duplexer, it is important that the correct model be used. Model numbers are different for units designed for either the transmitter higher or lower than the receiver frequency. I have tuning instructions if this sounds like the unit. Rob K7TGU - Original Message - From: "tahrens301" To: Sent: Thursday, January 28, 2010 15:37 Subject: [Repeater-Builder] VHF Vari-Notch Duplexers - 2" x 2" x 4" ??? > Well, I thought this thing was tuned up, > but obviously something is wrong. > > These are a set of the 2x2x4" cavities... > have a plunger in the front, and a variable > cap adjustment on the back. Also, a pair of > BNC connectors on the capacitor side. > > The plate says Duplexer Vari-Notch, > 147-174 > > It also implies that the TX has a 1.5dB > insertion loss, but darned if I can get > only about 4.5. > > I've talked to the guys at TX/RX, and they > are looking for a book on them, but nothing > yet. > > Anybody have any tuning instructions/info on > them? > > The plunger is marked 'pass low', and the cap > is reject high. Pretty much self explanatory, > and they tune ok, but the insertion loss is > higher than it appears it should be. > > Thanks, > > Tim > > > > > > > > > Yahoo! Groups Links > > >
Re: [Repeater-Builder] Re: VHF Vari-Notch Duplexers - 2" x 2" x 4" ???
The 28-41-05 is indeed a "Vari-Notch" unit. We have a hundred or so 28-37-06C units in service. The manual for the 28-37-06C covers 17 different models, however, the 28-41-05 is not among those. Sorry I couldn't help out. Regards, Rob K7TGU - Original Message - From: "tahrens301" To: Sent: Thursday, January 28, 2010 17:28 Subject: [Repeater-Builder] Re: VHF Vari-Notch Duplexers - 2" x 2" x 4" ??? > Hi Rob, > > Sorry, I forgot to put the model number in the original > posting! > > It's 28-41-05 > > It has 3 of the blocks in the TX line, and 2 in the > RX. It's in a 2 1/4" thick rack panel. > > I opened one up, and it looks like a helical resonator > with a silver slug that goes in and out, and the BNC > connectors have a loop that is 90 degrees to the larger > coil and has an air variable cap to ground. > > thanks! > > Tim > > > > --- In Repeater-Builder@yahoogroups.com, "Rob Lee" wrote: >> >> >> The duplexer that you have may not be a "Vari-Notch" unit. Your >> description >> sounds like a "30 series" unit (Model number will start with a 30 e.g. >> 30-36-01A) >> >> The 30 series VHF duplexers are specially designed to work with repeaters >> that exhibit problems when connected to high selectivity duplexers. This >> design uses three standard notch type filters on the transmitter side >> which >> provide excellent noise filtering while maintaining a relatively low VSWR >> over a wide frequency range. This helps minimize transmitter sensitivity >> to >> cable length between the duplexer and the transmitter and also reduces >> the >> potential for transmitter spurs. >> >> The receiver portion of the duplexer incorporates three pseudo bandpass >> filters to give isolation to the transmit carrier and reduce interference >> and intermodulation caused by other nearby transmitters. >> >> Because different types of cavity filters are used for the transmit and >> receive sides of the duplexer, it is important that the correct model be >> used. Model numbers are different for units designed for either the >> transmitter higher or lower than the receiver frequency. >> >> I have tuning instructions if this sounds like the unit. >> >> Rob K7TGU >> >> >> - Original Message - >> From: "tahrens301" >> To: >> Sent: Thursday, January 28, 2010 15:37 >> Subject: [Repeater-Builder] VHF Vari-Notch Duplexers - 2" x 2" x 4" ??? >> >> >> > Well, I thought this thing was tuned up, >> > but obviously something is wrong. >> > >> > These are a set of the 2x2x4" cavities... >> > have a plunger in the front, and a variable >> > cap adjustment on the back. Also, a pair of >> > BNC connectors on the capacitor side. >> > >> > The plate says Duplexer Vari-Notch, >> > 147-174 >> > >> > It also implies that the TX has a 1.5dB >> > insertion loss, but darned if I can get >> > only about 4.5. >> > >> > I've talked to the guys at TX/RX, and they >> > are looking for a book on them, but nothing >> > yet. >> > >> > Anybody have any tuning instructions/info on >> > them? >> > >> > The plunger is marked 'pass low', and the cap >> > is reject high. Pretty much self explanatory, >> > and they tune ok, but the insertion loss is >> > higher than it appears it should be. >> > >> > Thanks, >> > >> > Tim >> > >> > >> > >> > >> > >> > >> > >> > >> > Yahoo! Groups Links >> > >> > >> > >> > > > > > > > > > Yahoo! Groups Links > > >
