Re: [Repeater-Builder] highest repeater?
At 10/2/2004 08:28 PM, you wrote: Hello all Just got back from colorado springs and pike peak in august and took this pitcure of the radio shack on top of pike peak. Interesting: roll-up door almost makes it look like a garage. Also notice the lack of a tall tower - what's another 60 ft. on top of 14,110? Only lightning I imagine, no more coverage. i will also try to upload is to the repeater-builders side. wish i could have stay up there longer, but the xyl got a lot light head ( 50% oxygen level) Gotta breathe when you're that high up. When I realized they probably weren't going to open the road to the top, I decided to do a little hiking up a small rock outcropping. By the time I made it to that summit I must have looked like the bad guy in Total Recall after being blown out into the Martian non- atmosphere. Bob NO6B Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
RE: [Repeater-Builder] Re: filter question
Does it de-sense without the pre-amp? Steve NU5D 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] Happy radio day! - Happy 10-4 Day ...
Happy 10-4 day everyone ... ;) Neil - WA6KLA 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: filter question
rtoplus [EMAIL PROTECTED] wrote: Hi I'm thinking about putting 1 or 2 bandpass filters on my repeater receiver...got some desense. System is: MSR 2000, VHF 2 meter, about 50 watts out of the duplexer, 1/2 in hardline, 1/4 in hardline jumpers, el cheapo antenna (I know, I know), stock pre-amp, etc. It would be better to find the source of the problem. If it is desense and what's causing it. Some simple checks could give you an idea of the problem source(s). Question is: 1. Is the jumper length from the pass filter to the duplexer or PA to the pass filter critical? Most generic repeater people will say no. But it does make a difference. I say yes and follow rules of thumb on certain repeater system cable lengths, this specific cable being one of them. 2. If I use more than 1 filter, is the length of the cable between the added on filters critical? Yes 3. Will the interconnect cables within the duplexer need to be changed? Probably not the lenghts. 4. Will the duplexer need to be re-tuned? Yes, everything should be checked and probably re-adjusted slightly. 5. Would I be better off using notch filters as opposed to pass filters? You don't know what the problem is yet... and you didn't indicate what type of duplexer you are using. Number 5 alive says... need input? Do you have a isolator or circulator in line? I'm at a somewhat low noise site...closest RF stuff is about 200 yards away with the exception of my micor GMRS UHF repeater (50 watts) that's co-located at the site. Nice to be at a low noise site. You might not need the additional filters. You should find and address the desense problem first. Thanks Bob, GMRS WPVV845, Amateur KG4WAD, LMRS WPXC892 cheers, skipp www.radiowrench.com/sonic 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: FS: GE MASTR2 VHF 100w base/repeater
kk2ed wrote: Honestly, I have always been a Motorola person (you are either GE or Moto), and my other repeaters are all Motorola. Okay, but I'll not agree that everyone is 'either' one flavour or the other. I say this as I am (finally) rebuilding my 145.27 machine the way I want it. The repeater is a Motorola Micor Non Unified Chassis. The transmitter is built from an old IMTS paging station that originally fed 10 watts into the tube PA. I sold the Motorola tube PA to make room for the rest of the goodies. The receiver shelf was added and the control system stripped as I usually do containing only a modified Station Control Card. In addition to the exciter, 10 watt PA, receiver, and control shelf, there also resides a RC-96, DVR, and FC-900 stack. The original power supply was replaced with TPN1110B so the backup 110 watt PA could be driven under battery power. I say 'backup' PA because the main PA is a GE 4EF5A1, 330 watt station power amplifier from the Mastr Pro/II era. The GE tube PA resides in its own (GE) cabinet along with a front facing exposed metering panel and internal rack mounted Mastr II style IMTS power meter/alarm. In this station, GE and Motorola are married to give (IMHO) the best operation from one of the most powerful 2 meter repeaters on the east coast. Both are simply a joy to service. http://www.shol.com/kuggie/ahra/hmft.html 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/
Re: [Repeater-Builder] Re: FS: GE MASTR2 VHF 100w base/repeater
Coy Hilton wrote: You've peaked my interest. Are you running two antennas with this beast, or are you duplexing, If, so what kind of duplexer? Click on the link provided: http://www.shol.com/kuggie/ahra/hmft.html http://www.shol.com/kuggie/ahra/ Single antenna, simple 4 cavity duplexer. - tubes are better - 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: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Re: FS: GE MASTR2 VHF 100w base/repeater
Kevin, it still rocks! --- Kevin Custer [EMAIL PROTECTED] wrote: [EMAIL PROTECTED] wrote: Wow Kevin, sounds like you got a [EMAIL PROTECTED] repeater with 330 watts on 2meters. Question for you: How many watts ERP is your repeater putting out? What type of antenna will handle 330 watts? The repeater is actually outputting (and is coordinated for) 250 watts into the duplexer. Subtracting the duplexer insertion loss of 1.5 dB (or 29 %), I get about 175 watts to the bottom of the feeder which I lose an additional 1/2 a dB or so, so I really get about 158 watts to the stick (Sinclair SRL-229) which has a rated gain of 6.1 dBd, so my ERP is about 650 watts. The antenna will handle 300 watts, so I'd need to run over 400 watts for that to be a concern. I have run this station for short periods of time at the 330 watt level for testing. There isn't much difference in ERP between the 250 and 330 watt level, so I choose to save on the electric bill and keep the coordinator happy and run it at the 1/4 kilowatt level. Kevin Yahoo! Groups Links [EMAIL PROTECTED] __ Do you Yahoo!? New and Improved Yahoo! Mail - Send 10MB messages! http://promotions.yahoo.com/new_mail 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] Does the R100 need duplexer if using two anetnnas?
Point taken. 1/4 wave antennas are not truly isotropic. The vertical seperation can be much less if gain antennas are used however, and gain antennas give better coverage further out, which is usually a benefiet. Wade - KR7K - Original Message - From: Tony King - W4ZT [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: Monday, October 04, 2004 6:40 AM Subject: Re: [Repeater-Builder] Does the R100 need duplexer if using two anetnnas? At 09:57 AM 10/2/04, Wade - KR7K wrote: As long as you are using 1 antenna system for TX and another antenna system for RX then that will work without a duplexer, if you follow a few guidelines. First, you have to use gain antennas (not 1/4 waves verticals). Unity gain, omni-directional antennas (like 1/4 wave verticals) radiate in all directions equally and you cannot effectively isolate one from the other. Actually, the 1/4 wave ground plane antenna doesn't radiate in all directions equally. Instead it has quite a hole in the pattern directly above the vertical radiator and they work quite when they're stacked one above the other, vertically, using the top antenna for receive and mounting it upside down. Separation should be as much as you can stand but at least 30 feet. They've been used on repeaters for years. I've run several repeaters without a duplexer using 1/4 wave ground planes myself. 73, Tony W4ZT Provided you have 2 antennas with some gain, I would recommend at least 9dBi, you will need enough tower or mast to vertically seperate the antennas by 10 or 15 feet. If you are using yagi type antennas, the same rules apply. Good luck Wade - KR7K - Original Message - From: Dakota Summerhawk [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: Friday, October 01, 2004 5:50 PM Subject: [Repeater-Builder] Does the R100 need duplexer if using two anetnnas? I have a UHF R100 and need to know if I need a duplexer if I am going to be using two antennas. Can someone help? Thanks Dakota 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] 2 repeaters / one antenna
I have two repeaters, one running 144.67/145.27, the other running 448.8/443.8. I use a ham grade diplexer (Daiwa or MFJ or something) to connect the output(s) of the 2 meter and 440 duplexer(s) to a single feedline feeding a dual band Cushcraft colinear. This set-up works great, and the diplexer introduces very little VSWR into the system. Howver I am sure there is a more professional method of combining the two repeater duplexers to the common feedline. Any suggestions ? 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 / one antenna
Not really, there are more expensive crossband couplers though. As long as you don't take a lightning strike you will be fine. If/when that happens buy another 60 dollar coupler. I used one of the cheap Comet crossband couplers fro years until I built my tower, I then came across a tower company that was going out of business and I bought all his stuff for pennies on the dollar. Along with that stuff came about 20 Microwave Associates crossband couplers of varying models. They are built like tanks inside and do pretty well in lightning strikes. I have had several at 475 feet since late 1998 with no problems. Paul WB5IDM -Original Message- From: ve3iny [mailto:[EMAIL PROTECTED] Sent: Monday, October 04, 2004 7:20 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] 2 repeaters / one antenna I have two repeaters, one running 144.67/145.27, the other running 448.8/443.8. I use a ham grade diplexer (Daiwa or MFJ or something) to connect the output(s) of the 2 meter and 440 duplexer(s) to a single feedline feeding a dual band Cushcraft colinear. This set-up works great, and the diplexer introduces very little VSWR into the system. Howver I am sure there is a more professional method of combining the two repeater duplexers to the common feedline. Any suggestions ? 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] Re: FS: GE MASTR2 VHF 100w base/repeater
[EMAIL PROTECTED] wrote: Wow Kevin, sounds like you got a [EMAIL PROTECTED] repeater with 330 watts on 2meters. Question for you: How many watts ERP is your repeater putting out? What type of antenna will handle 330 watts? The repeater is actually outputting (and is coordinated for) 250 watts into the duplexer. Subtracting the duplexer insertion loss of 1.5 dB (or 29 %), I get about 175 watts to the bottom of the feeder which I lose an additional 1/2 a dB or so, so I really get about 158 watts to the stick (Sinclair SRL-229) which has a rated gain of 6.1 dBd, so my ERP is about 650 watts. The antenna will handle 300 watts, so I'd need to run over 400 watts for that to be a concern. I have run this station for short periods of time at the 330 watt level for testing. There isn't much difference in ERP between the 250 and 330 watt level, so I choose to save on the electric bill and keep the coordinator happy and run it at the 1/4 kilowatt level. 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: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] 2 repeaters / one antenna
Sure, you could introduce a antenna combiner at $2000.00 a channel/port. I've used the same set up you have for many years and since it's a ham box why bother spending the big bucks for the users unless they are paying for it:) Regards, Barry --- ve3iny [EMAIL PROTECTED] wrote: I have two repeaters, one running 144.67/145.27, the other running 448.8/443.8. I use a ham grade diplexer (Daiwa or MFJ or something) to connect the output(s) of the 2 meter and 440 duplexer(s) to a single feedline feeding a dual band Cushcraft colinear. This set-up works great, and the diplexer introduces very little VSWR into the system. Howver I am sure there is a more professional method of combining the two repeater duplexers to the common feedline. Any suggestions ? Yahoo! Groups Links [EMAIL PROTECTED] __ Do you Yahoo!? Yahoo! Mail Address AutoComplete - You start. We finish. http://promotions.yahoo.com/new_mail 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] Direct Digital Frequency Synthesizer
I have not encountered any forums specifically for DDS projects. I wanted to build one for a QRP project I was working on but I also wanted to try replacing old channel elements with one to make a Rock bound Motorola or GE, frequency agile for remote base operation. The NJQRP kit parts are easy to find from Jameco, Digikey, etc. Since the NJQRP kits arent available any-more I was thinking of designing a new PWB of my own with a stamp on board, since I'll be needing more of these for all the projects I have in mind. Wade - KR7K Is there a forum group for this project or more specifically I am interested in a DDS board if there are supplies out there. I see the NJQRP website discusses another production run, but I would like to find an un built kit from someone who may have decided it was too much.. Doug KB8GVQ Hi all, If any of you radio builders out there have built the NJQRP DDS board or any Analog devices AD9850 based project, you probably noticed right away, as I did, that there are very few ways of controlling the AD9850 DDS chip On the fly. I just wanted to share with the group a piece of software I wrote for the Basic Stamp2, to load frequencies that are directly entered to a Basic stamp via a 4x4 keypad ($7.00 from Jameco). Stamp code to do this might already exist, but I was not succesful in finding any. I realize that there is already code for PIC's out there but many of you might agree with me that it is easier to customize Stamp code. My code can be downloaded from http://kr7k.pecnet.net Hope it helps someone out with their DDS Project - it sure helped me... 73, Wade - KR7K 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] DB-212 Harness
Does any one know the formula to make a harness for 2 of the db-212 and for 4 of them?Also how far apart?thanks Mike KC8FWD I have a PDF file at work on the DB-212 which gives information on all the 212 configurations. I will submit it as soon as I can. I do know that the cable coming from each dipole is 50 Ohm and where they join in a Y (now 25 Ohm) is a 1/4 wave stub made from 35 Ohm cable to get back to 50 Ohm again. 73, Tony VE3DWI --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.742 / Virus Database: 495 - Release Date: 19/08/2004 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] UHF Dupler for sale
I have a Celwave UHF duplexer for sale. Model#638-6-4-3. Six cavity, N-Type connectors. Works great. See specs below. This is currently tuned to 444.900/449.900. It is used but in good shape. This is surplus to my needs and thought I would offer it to the list first. If no takers it goes on Ebay. Pictures available on request. I am asking $100 +shipping or best offer. Type: 6 cavity compact size Minimum freq. spacing 5.0 MHz Insertion loss 1.2 dB Max. continuous power 100 watts Tx noise supp. at Rx freq. 75 dB Rx isolation at Tx freq. 75 dB Temperature range -30 to +60C VSWR 1.3:1 73, Steaven, W4YI 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] SWR at Isolator input
I too disagree. I have retuned VHF isolators by at least 6 MHz. Tony VE3DWI At 10/2/2004 06:15 PM, you wrote: Most ferrite isolators have a very narrow tuning range, 1 or 2 MHz at best. The tuning capacitors are intended to have a very narrow range. No way can you retune an isolator by 8 MHz using the capacitors! Really? I've retuned many isolators down from 460 to to 440 MHz encountered no problems. Bob NO6B Yahoo! Groups Links --- Incoming mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.742 / Virus Database: 495 - Release Date: 19/08/2004 --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.742 / Virus Database: 495 - Release Date: 19/08/2004 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 repeaters / one antenna
TX-RX, but if it the existing setup works... :-) http://www.txrx.com/ http://www.txrx.com/demo/rf_sys_products_cb.asp?id=23 Joe M. ve3iny wrote: I have two repeaters, one running 144.67/145.27, the other running 448.8/443.8. I use a ham grade diplexer (Daiwa or MFJ or something) to connect the output(s) of the 2 meter and 440 duplexer(s) to a single feedline feeding a dual band Cushcraft colinear. This set-up works great, and the diplexer introduces very little VSWR into the system. Howver I am sure there is a more professional method of combining the two repeater duplexers to the common feedline. Any suggestions ? 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] Re: FS: Mitreks and Maratracs
Sorry, the T74 Maratrac has sold. I have offered each of the radios first-come first serve based on the time emails were sent. If the first party fails to complete a deal, I will offer the second person(s) the radio(s). Thanks to all who inquired. Eric KE2D --- In Repeater-Builder@yahoogroups.com, hoffmanmk [EMAIL PROTECTED] wrote: I would like to buy the Maratrac T74XTATA7BK, UHF. Marv Hoffman, WA4NC Appalachian State University 102 Whitener Hall Boone, NC 28608 Please advise total cost and I will get you a money order. Thanks. kk2ed wrote: I have the following radios for sale: Mitrek: QTY 1 T81JJA8000BK QTY 1 T74JJA6900CK MARATRAC: QTY 3 T81XTA7TA7BK QTY 1 T81XTA7DA2AK QTY 1 T81XTA7DA2BK QTY 1 T74XTA7TA7BK GE Mastr 2 6m mobile T74 is 100w UHF 450-470MHz T81 is low band 100w 30-50MHz All radios no accessories, sold as is. Most probably work fine, but they have been sitting on a shelf for a long while, and I don't have accessories at this time to test them. $50 each or make offer for entire lot or partial lot. Eric KE2D (ex KK2ED) [EMAIL PROTECTED] 609-713-3742 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 / one antenna
I would recommend lightning protection (specifically Polyphasor). Since it should be at the enterance to the building, and the duplexers (the two on the repeaters and the one combining the repeaters) should all be inside the building, they would all be protected. That should eliminate the lightning issue. The tower is another matter, but in this case the combined feedline is not diplexed back to two separate antennas, so it's a non-issue. Joe M. Paul Finch wrote: As long as you don't take a lightning strike you will be fine. If/when that happens buy another 60 dollar coupler. 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] DB-212 Harness
DB says that for the greatest gain spacing should .95 wavelength measured from the center of each loop. - Original Message - From: Tony lelieveld [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: Monday, October 04, 2004 10:41 PM Subject: RE: [Repeater-Builder] DB-212 Harness Does any one know the formula to make a harness for 2 of the db-212 and for 4 of them?Also how far apart?thanks Mike KC8FWD I have a PDF file at work on the DB-212 which gives information on all the 212 configurations. I will submit it as soon as I can. I do know that the cable coming from each dipole is 50 Ohm and where they join in a Y (now 25 Ohm) is a 1/4 wave stub made from 35 Ohm cable to get back to 50 Ohm again. 73, Tony VE3DWI --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.742 / Virus Database: 495 - Release Date: 19/08/2004 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] Intermod problem?
Q, I had a IM problem several years ago with our 146.940 repeater. The repeater was a GE MastrII station with a dual isolator on the transmitter and a bandpass bandreject duplexer. The antenna was a Sinclair SRL229 mounted to a 40 Ft wood pole. The other transmitters found in the IM mix were AM broadcast transmitters nearby. One was on 910 khz and the other on 1510 khz. Thats right, they were 600 khz apart. When the 146.94 transmitter came on the mix was present and heard in the 146.34 receiver until the repeater timed out. One clue was that the IM would go away at sundown and return at sunrise. We found that the station on 1510 went to very low power at night. Both AM transmitters were within 5 miles of this repeater and were very strong. It turned out that the mix was coming from a nearby tower that had 3 rusty guy anchors. This was a 120 Ft tower that was 200 Ft away. I solved the problem by putting in jumper wires attached with cable clamps from each of the guy wire to ground which bypassed the rusty guy wire combing plate. Look for any rusty guy wires, rusty joints between guy wires, rusty tower joints, loose metal rubbing up against a tower leg or section, loose hardware on a tower,antenna elements that have come loose from their mount. This should get you started. The site that has the strongest interferrence is most likely to have the problem nearby. This sounds like the 146.70 location from your description. I would make sure that both repeaters have dual isolators on their transmitters. A dual isolator keeps the transmitter PA from creating the 2A-B and 2B-A mix from happening and being radiated back out through your antenna. I recently found and purchased a tuneable Sinclair Dual Isolator and I tuned it down to 145.270 just fine. Insertion loss was under 1 db and the isolation was 75 DB on frequency. I got mine from Bill Hance, KD7CWA. Bill knows his stuff and is good to work with. John Lloyd, K7JL Date: Sun, 3 Oct 2004 01:18:22 -0400 From: Q [EMAIL PROTECTED] Subject: Intermod problem? Trying to troubleshoot an intermod??? problem between two repeaters. The 146.10/.70 repeater's receiver gets blasted by the 147.90/.30 transmitter but only when they are both transmitting. Yes,the transit freqs are 600khz apart and they are only 5 miles apart. Would a circulator help this problem? Also have similar problem between the 146.07/.67 and the 147.87/.27 repeaters when they are both keyed up. Ideas? ___ Do you Yahoo!? Declare Yourself - Register online to vote today! http://vote.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/
[Repeater-Builder] need UHF Micor mobiles
I need a few 450 MHz Micor mobiles that are 25 watt or 45 watt in good working order. Cables heads are not necessary. I know I asked this a week or 2 ago, but I received no positive responses. thanks for reading 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] UHF Duplexer Question
I currently have a UHF MTR-2000 repeater, I bought it without a duplexer. It is the 100 watt type. I will be using this repeater at a high site with alot of intermod. I am looking for a good duplexer... I am not sure which one tp purchase. I have no problem buying a new one and spending some money, but I am not sure if that is the best choice.. Sop here are my questions ?? Which brand of duplexer does motorola send as a package with the MTR-2000 if adding the duplexer option ? Which brand of duplexer seems to work the best in a high intermod site ? Is a used duplexer as good as a new one if bought in good condition ? Thanks in advance ?? Joe 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: Happy radio day! - Happy 10-4 Day ...
OK, Neil. I'm a little slow. Finally realized it was national 2-way radio day. I was refering to 10/23 not 11/23, Hi! Hi! Gary KB7TRP --- In Repeater-Builder@yahoogroups.com, Neil McKie [EMAIL PROTECTED] wrote: Happy 10-4 day everyone ... ;) Neil - WA6KLA 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: filter question
Hi Steve I haven't had a chance to remove the pre-amp. Here's the story... My handy-dandy motorola tech came to the site about 3 months ago to help. He told me I had about 6db-10db of desense according to his zillion dollar service monitor. He was wanting to sell me a used Celwave 5042-1 duplexer he had. He offered it to me for a good price...$600.00 so I bit and we hooked it up and tuned it. I asked him about the preamp and he said I should leave it in place. I said OK and he went on his merry way. A ham buddy of mine and me then took off in different directions to check out the new system. The desense was worse than ever Just a few miles from the site, any attempt to use the repeater caused the repeater transmitter to key on and off constantly. Next day, I went back to the site, removed the celwave and put the sinclair back on...problem went away. I got home and looked up the specs on the celwave and lo and behold, the sinclair had much better specs. The radio tech blamed everything on the antenna I have, which I know causes some problems, but like I said in an earlier post, my options are somewhat limited (any suggestions in this area would be welcome!). Needless to say, I've not used this guy again. Anyway, I haven't removed the preamp. If I do remove it, does the receiver need to be retuned? That's one reason I've not removed it cause its a bit tough to get my equipment to the site if retuning is needed. Thanks Bob, GMRS WPVV845, Amateur KG4WAD, LMRS WPXC892 --- In Repeater-Builder@yahoogroups.com, Steve Bosshard [EMAIL PROTECTED] wrote: Does it de-sense without the pre-amp? Steve NU5D 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] UHF Duplexer Question
TX RX in Angola, NY has BP/BR duplexers that seem to be the most popular for high interference sites, in my opinion. Depending on the level of interference you may need additional filtering which they also make. Good Luck JIM KA2AJH - Original Message - From: [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: Tuesday, October 05, 2004 8:57 AM Subject: [Repeater-Builder] UHF Duplexer Question I currently have a UHF MTR-2000 repeater, I bought it without a duplexer. It is the 100 watt type. I will be using this repeater at a high site with alot of intermod. I am looking for a good duplexer... I am not sure which one tp purchase. I have no problem buying a new one and spending some money, but I am not sure if that is the best choice.. Sop here are my questions ?? Which brand of duplexer does motorola send as a package with the MTR-2000 if adding the duplexer option ? Which brand of duplexer seems to work the best in a high intermod site ? Is a used duplexer as good as a new one if bought in good condition ? Thanks in advance ?? Joe 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-212 Harness
You can find harness info at: http://www.w4dex.com/kc4fwc/ant.htm 73, Tony W4ZT At 11:41 PM 10/4/2004, you wrote: Does any one know the formula to make a harness for 2 of the db-212 and for 4 of them?Also how far apart?thanks Mike KC8FWD I have a PDF file at work on the DB-212 which gives information on all the 212 configurations. I will submit it as soon as I can. I do know that the cable coming from each dipole is 50 Ohm and where they join in a Y (now 25 Ohm) is a 1/4 wave stub made from 35 Ohm cable to get back to 50 Ohm again. 73, Tony VE3DWI 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: Happy radio day! - Happy 10-4 Day ...
OK, Neil. I'm a little slow. Finally realized it was national 2-way radio day. I was refering to 10/23 not 11/23, Hi! Hi! Gary KB7TRP --- In Repeater-Builder@yahoogroups.com, Neil McKie [EMAIL PROTECTED] wrote: Happy 10-4 day everyone ... ;) Neil - WA6KLA 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: Happy radio day! - Happy 10-4 Day ...
Oh, 10/23, are there any tables left? Neil Gary wrote: OK, Neil. I'm a little slow. Finally realized it was national 2-way radio day. I was refering to 10/23 not 11/23, Hi! Hi! Gary KB7TRP --- In Repeater-Builder@yahoogroups.com, Neil McKie [EMAIL PROTECTED] wrote: Happy 10-4 day everyone ... ;) Neil - WA6KLA 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] Re: filter question (test time)
Turn the Repeater Power Down to 20 watts output. Borrow a 3dB attenuator that will handle 15 watts and intert it in the line between the rf pa and the duplexer. Test the system again using weak signals (run around your normal locations with ht's). Less the reduced repeater transmit power out, tell me/us if the desense the same goes away, or is much reduced. cheers, skipp www.radiowrench.com/sonic rtoplus [EMAIL PROTECTED] wrote: Hi Steve I haven't had a chance to remove the pre-amp. Here's the story... My handy-dandy motorola tech came to the site about 3 months ago to help. He told me I had about 6db-10db of desense according to his zillion dollar service monitor. He was wanting to sell me a used Celwave 5042-1 duplexer he had. He offered it to me for a good price...$600.00 so I bit and we hooked it up and tuned it. I asked him about the preamp and he said I should leave it in place. I said OK and he went on his merry way. A ham buddy of mine and me then took off in different directions to check out the new system. The desense was worse than ever Just a few miles from the site, any attempt to use the repeater caused the repeater transmitter to key on and off constantly. Next day, I went back to the site, removed the celwave and put the sinclair back on...problem went away. I got home and looked up the specs on the celwave and lo and behold, the sinclair had much better specs. The radio tech blamed everything on the antenna I have, which I know causes some problems, but like I said in an earlier post, my options are somewhat limited (any suggestions in this area would be welcome!). Needless to say, I've not used this guy again. Anyway, I haven't removed the preamp. If I do remove it, does the receiver need to be retuned? That's one reason I've not removed it cause its a bit tough to get my equipment to the site if retuning is needed. Thanks Bob, GMRS WPVV845, Amateur KG4WAD, LMRS WPXC892 --- In Repeater-Builder@yahoogroups.com, Steve Bosshard [EMAIL PROTECTED] wrote: Does it de-sense without the pre-amp? Steve NU5D 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] Phoenix freq setting
Can anyone tell me the slug or point you use to set the rx and tx frequency on the vhf and uhf SX Phoenix. I have gone through the manual several times and cant find it. I may be missing a page. Thanks, Dale k0jxi 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] UHF Duplexer Question
At 11:57 AM 10/5/2004 -0400, you wrote: In my humble opinion, the best duplexers you can buy are from TX/RX Systems. ---Good stuff, yep! Although another great choice for him would be to find a Mototola T1504A. They're an excellent performing BP/BR type and can be found for a pretty reasonable price. Ken -- President and CTO - Arcom Communications Makers of state-of-the-art repeater controllers and accessories. http://www.ah6le.net/arcom/index.html We now offer complete Kenwood TKR repeater packages! AH6LE/R - IRLP Node 3000 http://www.irlp.net 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] UHF Duplexer Question
In my humble opinion, the best duplexers you can buy are from TX/RX Systems. Chuck WB2EDV - Original Message - From: [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: Tuesday, October 05, 2004 8:57 AM Subject: [Repeater-Builder] UHF Duplexer Question I currently have a UHF MTR-2000 repeater, I bought it without a duplexer. It is the 100 watt type. I will be using this repeater at a high site with alot of intermod. I am looking for a good duplexer... I am not sure which one tp purchase. I have no problem buying a new one and spending some money, but I am not sure if that is the best choice.. Sop here are my questions ?? Which brand of duplexer does motorola send as a package with the MTR-2000 if adding the duplexer option ? Which brand of duplexer seems to work the best in a high intermod site ? Is a used duplexer as good as a new one if bought in good condition ? Thanks in advance ?? Joe 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] http://www.engr.mun.ca/~gmarsh/phoenix/
http://www.engr.mun.ca/~gmarsh/phoenix/ Phoenix page 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: [SPAM] - Re: [Repeater-Builder] UHF Duplexer Question -
Anyone have any experience with Fiplex duplexers? Kevin K2KMB From: Chuck Kelsey [mailto:[EMAIL PROTECTED] Sent: Tuesday, October 05, 2004 11:58 AMTo: Repeater-Builder@yahoogroups.comSubject: [SPAM] - Re: [Repeater-Builder] UHF Duplexer Question - Email found in subject In my humble opinion, the best duplexers you can buy are from TX/RX Systems. Chuck WB2EDV - Original Message - From: [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: Tuesday, October 05, 2004 8:57 AM Subject: [Repeater-Builder] UHF Duplexer Question I currently have a UHF MTR-2000 repeater, I bought it without a duplexer. It is the 100 watt type. I will be using this repeater at a high site with alot of intermod. I am looking for a good duplexer... I am not sure which one tp purchase. I have no problem buying a new one and spending some money, but I am not sure if that is the best choice.. Sop here are my questions ?? Which brand of duplexer does motorola send as a package with the MTR-2000 if adding the duplexer option ? Which brand of duplexer seems to work the best in a high intermod site ? Is a used duplexer as good as a new one if bought in good condition ? Thanks in advance ?? Joe 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] UHF Duplexer Question
Motorola uses the six cavity celwave rack mount (very expensive). I would suggest the tx/rx units over the celwave. I use the tx/rx 4 cavity units on all my repeaters, even the one running at 200 watts. [EMAIL PROTECTED] wrote: I currently have a UHF MTR-2000 repeater, I bought it without a duplexer. It is the 100 watt type. I will be using this repeater at a high site with alot of intermod. I am looking for a good duplexer... I am not sure which one tp purchase. I have no problem buying a new one and spending some money, but I am not sure if that is the best choice.. Sop here are my questions ?? Which brand of duplexer does motorola send as a package with the MTR-2000 if adding the duplexer option ? Which brand of duplexer seems to work the best in a high intermod site ? Is a used duplexer as good as a new one if bought in good condition ? Thanks in advance ?? Joe 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] Phoenix freq setting
Radio facing you with top cover off - from the speaker there is a blue tx deviation pot, and past that another pot in the middle and far right of the radio (tx symetry pot). The freq adj is between these two pots and under the shield - to the far right. Ssb. Seems like there is a kg4gle or something like that page of psx stuff. Ssb 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: Happy radio day! - Happy 10-4 Day ...
Have not heard. It seems like they always had empty ones the last couple years. Gary --- In Repeater-Builder@yahoogroups.com, Neil McKie [EMAIL PROTECTED] wrote: Oh, 10/23, are there any tables left? Neil Gary wrote: OK, Neil. I'm a little slow. Finally realized it was national 2-way radio day. I was refering to 10/23 not 11/23, Hi! Hi! Gary KB7TRP --- In Repeater-Builder@yahoogroups.com, Neil McKie [EMAIL PROTECTED] wrote: Happy 10-4 day everyone ... ;) Neil - WA6KLA 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/
