[Repeater-Builder] Re: Weird Kerchuking Problem
Scott, Are you hearing the courtesy tone when this happens? The absence or presence of the tone could help narrow the possibilities. Also, what provides the PTT signaling for the repeater; tone, cor, or both? Have you tried disconnecting the receiver and checking to see if the problem still exists? Scott Madison, WN1B --- In Repeater-Builder@yahoogroups.com, Scott [EMAIL PROTECTED] wrote: Here's the problem... Every so often (several times in 10 minutes) we are getting a key up of our repeater. Here is what we know... There is no signal coming in on the input frequency. No even a small spike. It is almost like something in the set up is timing and keying, but it is not an exact interval. Doesn't matter is RX tone is enabled in the CAT or not. Here is the setup... Motorola Mitrek trunk mount on 443.275, CAT 250 controller, Com- Spec TS64DS tone board. It has a good 300W 3 can duplexer that is tuned correctly and working well. 75Amp power supply. The cabinet also has an APRS rig in it, as well as a remote receiver for another repeater, and a link radio, but NONE of that is even turned on (and doesn't make a difference when it is). Suggestions as to what to look for...? 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] Equipment for Sale
Our club has several pieces of commercial radio equipment for sale. The items can be viewed at http://useca.rfc791.org/4sale/ We have not set any prices and will entertain any reasonable offers. Please contact me off list if you are interested in any of these items or have any questions. I'll do my best to answer your questions. Items are located in the metro Detroit area. All are untested and being sold as is. 73, and thanks Kevin for the approval to post. Scott Madison, WN1B 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: Repeater Pl tone encode decode methods
Steve, We use two boards but switch the encode on only when the input tone is present. The reason for this is it facilitates the use of cross band radios. The tone drops out before the courtesy tone and tail so the guys doing cross banding can access the repeater in normal time. I prefer having the tone present during courtesy and ID, it helps eliminate timing out by the guys using PL decode, but its not possible in this scenario. 73, Scott Madison, WN1B --- In Repeater-Builder@yahoogroups.com, Stephen Rice [EMAIL PROTECTED] wrote: I have installed tone boards on my micor repeater but had some questions as to what is the best way to handle PL tones. I have at the moment installed 2 TN-34 Standard tone boards(1 for decode and 1 for encode) and it works fine. Encodes as long as the repeater transmitter is up. Do any repeaters only use the 1 board mode and only encode upon decode of a signal? This, of course, would mean that the repeater ID and courtesy tone would not be heard by the stations unless they have PL decode turned off. Anybody think one way is better then another? Seems a waste to use 2 boards when 1 will do. Just curious what others thoughts are regarding this. Thanks Steve 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: NEW - ICS Basic repeater controller partial Kits
I've used them in two link radios and as a back up repeater controller. They are great little controllers. Scott Madison, WN1B --- In Repeater-Builder@yahoogroups.com, na6df [EMAIL PROTECTED] wrote: Cool! I am using one of these as a test controller while I build repeaters. Great stuff, can't beat it for the price. na6df --- In Repeater-Builder@yahoogroups.com, brian_martens_ics brianm@ wrote: Hi All FYI I am happy to announce that the Basic repeater controller is now avaiable in a partial kit form. It will include the Basic PCB, a programmed microcontroller, a DTMF decoding chip, a 0 ohm resistor and a copy of the manual on CD. The Basic manual now includes a detailed parts list (see the website) to help with assembly. The new Basic repeater controller kit sells for $24.95. Thanks and 73 Brian ka9pmm ICS www.ics-ctrl.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] Re: OT: Dayton Fleamarket space prices?
I think you have to look at it as a discount for the little guy, or better yet, a subsidization paid by the larger dealers. The premise being that the more tables you buy, the bigger dealer you are and the more you can afford to pay. That way, they keep the price lower for the individuals who only buy a table or two. You have to agree that when it comes to Dayton, or hamfests in general, the lines are blurred between hams wanting to sell their surplus and dealers making substantial money. This form of progressive pricing is used, I believe, in most commercial expo environments. Scott Madison, WN1B --- In Repeater-Builder@yahoogroups.com, Paul Finch [EMAIL PROTECTED] wrote: Hello, I know this is off-topic but I don't know where to ask this question. I have sent a email to the Hamfest folks by the way, who knows if they will respond. Has anyone looked at the space price listed on their website? It is a graduated price scheme, the more spaces you buy the more it costs you! The price for 3 spaces is almost twice what 2 spaces costs! Why do they do that? They seem to me to be the highest priced Hamfest, anyway this price scheme is just strange! Who is getting rich there? Somebody must be! Paul Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
[Repeater-Builder] Re: Quick CW ID'er
If cheap is what you are looking for, check out http://home.att.net/~jacksonharbor/10mintim.htm They have a $10 kit that should work. Scott, WN1B --- In Repeater-Builder@yahoogroups.com, wa9ba [EMAIL PROTECTED] wrote: Has anyone came up with a cheap easy CW ID'er for a GR 500 repeater? I was hoping I could find something that would say plug into the mic socket that would ID every 10 minutes. Bill WA9BA 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: Tone Decoding Software f
I'd be very interested in hearing from someone who has used the standard version of this, particularly the audio spectrum analyzer. I have been using the limited version of Oscillometer, but a 15 second run time doesn't cut it and I can't afford the $400 plus price tag. Thanks, Scott Madison, WN1B --- In Repeater-Builder@yahoogroups.com, Mark A. Holman [EMAIL PROTECTED] wrote: Hi; Thought to pass this info just downloaded a copy try out at this site http://www.comtekk.us/tone-generator.htm the Free Version available to hams discounted price Mark H. AB8RU -- MZÂ 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: Midland Repeater
--- In Repeater-Builder@yahoogroups.com, Ted Leonard [EMAIL PROTECTED] wrote: Hello Group, A friend was given a UHF Midland Syn-Tech ll 450-470 70-5300B repeater. The Pa is 71-5400 120 watt. The question of the day is will it program to Tx at 444.500 and Rx at 449.500. Anyone done it? Ted Ted, I'm not certain about retuning the radio but the PA will likely need some component changes to operate on your frequency. I have, at least, the manual for the PA at home. I'm not sure if I have the manual for the repeater. I won't be home for a few weeks but will be happy to copy the relevant pages of what I have once I return. Scott Madison, WN1B 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: LDG-8 voter
I'm no expert on the LDG voter's operation. I've installed one and still do not think, after much work, that its voting all that well. That aside, I suspect that using the COR, as recommended, helps facilitate the voter's operation. If all the links are constantly held active, the voter will have sample more audio sources before making its decision. Utilizing COR eliminates the inactive links and narrows the decision to only active links. As a suggestion, you can install PL boards on each of the feeds and use their decode detect to signal the voter. As for the easy front panel setup display, they could have made it even better had they put the audio level and noise calibration pots somewhere where they're accessable without having to remove and open the unit's cover. Every time we upgrade a link, add a link, or put a back-up unit into service, we have to go through far too much hogwash to reset the link's operating parameters. Scott Madison, WN1B --- In Repeater-Builder@yahoogroups.com, skipp025 [EMAIL PROTECTED] wrote: You could keep the cor active and provide constant audio to the voter, knowing the voter will always be working. You could even mix the constant audio sources with cor/audio provided inputs. You would have to figure a means to obtain a desired cos/cor function you might use for your repeater controller (or equiv) tx ptt/cor in-function. The nice thing about the ldg voter is the easy front panel setup and the display. cheers, skipp Erik Finskas lakki@ wrote: Hello group. I'm looking at a LDG RVS-8 voter, and I'm curious about the COR inputs. In the current linking system there is no COR signal provided, just unsquelched audio. Does the RVS require the COR signal to be connected, or would it work so that all COR inputs are tied high, so it would look like there are 8 receivers on all the time, between which the voter selects? The output of the voter would be fed to the repeater, which has a squelch circuitry to detect COR state and a PL decoder. .. Erik OH2LAK 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: Power transistors
--- In Repeater-Builder@yahoogroups.com, Captainlance [EMAIL PROTECTED] wrote: Anyone know what the interchange is for M9995 power transistors used in Micor uhf PAs like the TLE1713? Thanks... lance N2HBA RF Parts www.rfparts.com has what they call a suitable replacement in stock, though they don't indicate what that replacement is. Scott Madison, WN1B 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: PL Board level
--- In Repeater-Builder@yahoogroups.com, Dave VanHorn [EMAIL PROTECTED] wrote: I just picked up a little problem, my PL boards are dropping out sometimes when I have a valid PL. Can anyone tell me offhand what the PL signal voltage should be at the input to the boards? (TS-32 in this case) I have about 0.8Vpp, which I would have thought was enough. ComSpec's web site does not specify a level but the troubleshooting section in the instruction sheet for the TS-32 implies a 100 mV signal. Here is the link: http://www.com-spec.com/insheet/ts107.pdf Check the Decoder Input section on page 3 as well as the troubleshooting section on page 6. Scott Madison, WN1B 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: Vanity call resumes
Go to www.vanityhq.com. All the info you need is there. Scott Madison, WN1B --- In Repeater-Builder@yahoogroups.com, Maire-Radios maire- [EMAIL PROTECTED] wrote: how do you get a vanity call sign? could you please give me a little info? thanks - Original Message - From: N9WYS [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: Tuesday, December 20, 2005 7:17 PM Subject: RE: [Repeater-Builder] Vanity call resumes They discontinued after the hurricane problems along the Gulf coast - mainly because many hams in that area couldn't renew licenses and/or apply for vanity call signs for a while. Mark - N9WYS -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Jim B. Sent: Tuesday, December 20, 2005 4:18 PM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Vanity call resumes Coy Hilton wrote: FCC processing of Vanity Calls scheduled to resume January 4 2006. 73 AC0Y didn't know they stopped. can't imagine why they would either... (not that it matters to me anyway) -- Jim Barbour WD8CHL Yahoo! Groups Links Yahoo! Groups Links Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
[Repeater-Builder] Re: Source for RF enclos
Jim, Check out www.tubesandmore.com. Click on enclosures. They have steel, aluminum, and cast aluminum. Scott, WN1B --- In Repeater-Builder@yahoogroups.com, Jim, K8COP [EMAIL PROTECTED] wrote: I have a Hamtronics LNP VHF Preselector board. I would like to install it in a RF tight box. Checked with Hamtronics and they have no such item and no advise as to where to find one. I want to install the board in a metal box and have the antenna leads come out to two female N connectors, and a 12 vdc through a feed-thru connector for power. Their is no room to install it within the receiver. Thanks, Jim, K8COP 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: Voter Radios
Marty, The Phoenix and RVS-8 should work well for you. I have been rebuilding a system here in the Detroit area and have used the RVS-8 and Motorola GM-300 and M120s. I have been trying to find the time to take pictures and do a write-up to be posted on the web site, but that is still a few weeks from completion. I do have pics of the first one that I did and would be happy to share it with you if you desire. It's not as pretty as the current one as I used a used cabinet that was a bit smaller. In a nutshell, I have used the Motos modified for a couple watts output, flat audio passband (down to about 50 Hz.) and controlled with an ICS Basic controller. This gives remote shut-down and ID capability, as well as an adjustable hang timer. I package them in a 4 RU cabinet, add fans, power supply, fuse panel, and receive diplexer. The great thing about this arrangement is that you have complete versatility. If you need to change frequency, just reprogram. The GM300 and M120 radios have a pretty broad audio passband, so some minor audio shaping was used at the RVS-8 to roll it off above 5KHz. This way the noise was low enough to satisfy the RVS-8. I don't know if you'll experience the same signature with the Phoenix. I also don't know how difficult it will be to reduce the Phoenix power to one or two watts. I have some here but never played with them. One other note: Most of the Motos have low going COR with no bias capability. The phoenix may be the same way. No big deal, you will just have to supply 5 - 10 V bias to the COR line. I did mine inside the voter and labeled the outside accordingly. Good luck. Scott Madison, WN1B --- In Repeater-Builder@yahoogroups.com, marty_norris [EMAIL PROTECTED] wrote: Greetings What are the most popular and most dependable radios to use on a voting system? I know some guys that use GE Phoenix SX radios for linking. Would they be good for receiving on VHF and then linking back to the main site to the voter on UHF? Also, is the RVS-8 from LDG a good voter to go with? 73s de W4MLN 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: Voter Radios
Hasn't anyone besides me noted that the rate at which it votes changes based on which menu is currently displayed on the LCD? I suspect that if someone were to reverse engineer the internal software that they would find a LOT to be desired Mike WA6ILQ Mike, I haven't noticed this but I haven't been looking. Can you elaborate a bit? Which menu options are you seeing more activity, etc. I'm headed to the site on Friday and I'd love to see if I encounter the same activity. Scott Madison, WN1B 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: TLD1694E conversion?
Thanks, Larry. That was the information I was looking for. 73, Scott --- In Repeater-Builder@yahoogroups.com, [EMAIL PROTECTED] [EMAIL PROTECTED] wrote: Scott - I've rebuilt four or five of them over the years. You absolutely need the Motorola MICOR Base Station/Repeater service manual, it gives the parts values for the TLD1692 amp (and the 1693 and 1694 amps). It has detailed parts lists, schematics, and pictorials of the circuit boards. It really is a complete book on how to move a VHF MICOR to the ham band or change ranges to any frequency from 136-174 MHz. You need to change the indicated parts to be those that are used in the TLD1692 amp. There are more than 50 caps, transformers, resistors, both trimmer caps, etc. in the 150.8-174 MHz ranges that have to be removed and be replaced with the 136-150 MHz range parts. You almost strip the circuit board completely bare and rebuild it with the new parts! I picked up one more set of parts while at Motorola in Schaumburg, IL one time, so I could rebuild one more amp - it was about $150 worth of parts. Some of the special transformers were around $25 each. But since then, I've found several of the factory TLD1692 PA decks that are already in the 136-150 MHz range, so I never got around to rebuilding that last high-split TLD1694 PA deck, and I sold it to someone who needed it for their business on 162 MHz. Have fun, Larry K7LJ Original Message: - From: wn1b8 [EMAIL PROTECTED] Date: Fri, 29 Jul 2005 18:05:05 - To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] TLD1694E conversion? Can anyone tell me what is entailed in converting a Motorola TLD1694E PA to 2 meter ham band? Detailed instructions would be great but just a quick overview would be helpful. I have searched the archives and looked on the web site but came up dry. Thanks, Scott Madison, WN1B Yahoo! Groups Links --- - mail2web - Check your email from the web at http://mail2web.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] Re: TLD1694E conversion?
Thanks, Neil. I appreciate your and Larry's info. 73, Scott --- In Repeater-Builder@yahoogroups.com, Neil McKie [EMAIL PROTECTED] wrote: #1, a lot of work - especially if you unsoldering many parts: 34 capacitors, 9 coils, 6 resistors and four transformers. The TLD1694E is the split 4 model (162-174 MHz) You want to move it to the split 2 model (132-150.8 MHz) Neil - WA6KLA wn1b8 wrote: Can anyone tell me what is entailed in converting a Motorola TLD1694E PA to 2 meter ham band? Detailed instructions would be great but just a quick overview would be helpful. I have searched the archives and looked on the web site but came up dry. Thanks, Scott Madison, WN1B 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] TLD1694E conversion?
Can anyone tell me what is entailed in converting a Motorola TLD1694E PA to 2 meter ham band? Detailed instructions would be great but just a quick overview would be helpful. I have searched the archives and looked on the web site but came up dry. Thanks, Scott Madison, WN1B 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: GE Phoenix Radios as Links
--- In Repeater-Builder@yahoogroups.com, Doug Blizzard [EMAIL PROTECTED] wrote: Anyone out there using the GE Phoenix Mobiles in a linking system? Im having a problem with link drop outs and have narrowed it down to the link radio. I would like to hear from someone that has succesfully built a linking system using these radios. Thanks in advance Doug N4HAJ Doug, Can you be a bit more specific regarding the drop-outs? Are these momentary (1 or 2 second) drop-outs or are they longer in duration? Are you using CTCSS or just COR. Finally, when you experience a drop- out, are you seeing a loss of TX or just audio through your system. Scott Madison, WN1B 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 VHF PA
Model 71-3400B. Anyone know about these? Please drop me a note so I can ask some question. Thanks, Scott Madison, WN1B 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] Iota Power Supplies
I am considering purchasing an Iota high current supply to power the PA in our repeater. Does anyone have any long term experience with these supplies? I don't know much about Iota, just what I've read in their ads and two posts that I found here in the archives. Are they all their manufacturers claim? Scott Madison, WN1B 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 welded rod yagis
Skipp, I would be very interested in these dimensions when you get them. Thanks, Scott Madison, WN1B --- In Repeater-Builder@yahoogroups.com, skipp025 [EMAIL PROTECTED] wrote: Motorhead (Motorola), Cellwave and now RFS make a very strong end-mounted yagi for 450-470 MHz operation. It's all welded Al Rod on a thick ~1 tube. I picked up what measures out to be a 418-420 MHz range version of this same type/style antenna. Anyone have the model number and the specs? ... or a location there-of? Once I ID the yagi, I'll make my drawings available to all (as done with the DB-408 antennas from before) to Mike for posting to the RB Web Page. Thanks for your replies... skipp skipp025 at 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] Re: Motorola welded rod yagis
Skipp, I would be very interested in these dimensions when you get them. Thanks, Scott Madison, WN1B --- In Repeater-Builder@yahoogroups.com, skipp025 [EMAIL PROTECTED] wrote: Motorhead (Motorola), Cellwave and now RFS make a very strong end-mounted yagi for 450-470 MHz operation. It's all welded Al Rod on a thick ~1 tube. I picked up what measures out to be a 418-420 MHz range version of this same type/style antenna. Anyone have the model number and the specs? ... or a location there-of? Once I ID the yagi, I'll make my drawings available to all (as done with the DB-408 antennas from before) to Mike for posting to the RB Web Page. Thanks for your replies... skipp skipp025 at 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] Re: Retuning of Sinclair I2113A Isolator
Skip, I sent you an e-mail regarding a swap but got no reply. I sent it to your yahoo account. Drop me a note if you are still looking for a swap. Thanks, Scott --- In Repeater-Builder@yahoogroups.com, skipp025 [EMAIL PROTECTED] wrote: I have a number of DB and other name brand circulators already in the ham band, I would consider trading toward circulators in the higher portion of the vhf band. Email me off the list if you're interested. I test and plot each one I have available. (I have a number of high power circulators I'll sell or trade) skipp025 at yahoo.com [EMAIL PROTECTED] [EMAIL PROTECTED] wrote: I have some DB Products (UHF) and M/A (some of both VHF and UHF) circulators that I'd like to have redone for the UHF ham band and 2-Meters. Any ideas who might rework those brands? Or will Sinclair rework other manufacturers' units besides their own? LJ Original Message: - From: [EMAIL PROTECTED] Date: Sun, 6 Mar 2005 21:10:49 EST To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Retuning of Sinclair I2113A Isolator I agree with Eric WB6FLY to return unit to Sincair for factory adjustment and modification. My RFS/Celwave Model PCC-150B was on 158.1 Mhz and I had it factory retuned to 147 band. Cost of factory mod was well worth the $125 plus shipping. They retuned, replaced a 6T coil, adjusted coil spacing, reglued some poles, modified filter, reset output tap .100 inch. and included some nice plots. Rolling your own on these items isn't the way to go. Too much black magic. Crack a magnet or something as its all over. Gary K2UQ - --- mail2web - Check your email from the web at http://mail2web.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] Retuning of Sinclair I2113A Isolator
Greetings, I have a Sinclair model I2113A isolator. The range on this is supposed to be roughly 130 to 170 MHz. It currently sits at 167.1 MHz. I want to put it on 148.8. I suspect that this requires retuning of the large magnets. I have removed to side stickers to reveal the outside of the magnet holders, but they appear to be locked with something like Lok-Tite. Has anyone experience in retuning these? How do I go about freeing the covers? Will a heat gun be adequate without damaging the inside components? Kevin's site has the instructions for field tuning these but that only covers the fine tuning within a 2-4 MHz. range. I need info on the course tuning. Thanks, Scott Madison, WN1B 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: Micor Compa-Station Repeater
I have for sale a Micor Compa-Station Non-Unified repeater (less cabinet) that includes the following items: TLD1683C Transmitter (110W Intermittent Duty) TRD1803BB Receiver currently on 155.28 MHz. TRD1803BB Receiver currently on 155.34 MHz. TPN1110B Power Supply TLN4959A Chassis TLN4670BPR Line Driver Card TLN4635CPR Station Control Card TLN4961A0490P Multiple Console Card TLN4960A1291H DC Transfer Card TLN1467A099B4 Digital Decoder Card TLN5745A1194N Multi PL Decoder Card Also have the ribbon cable that interconnects the receivers, two BNC to phono RF cables, and manual. All are quite clean and appear to be in great shape. I have not assembled and tested this repeater but believe it to be in operational condition. I'd like $75.00 plus shipping or will swap for something in the Radius line (M10, M100, M120, GM300) in the 438 450 MHz. range. You can e-mail me direct at WN1B8 at yahoo dot com, or WN1B at key eight you oh dot com. Thanks, Scott Madison 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: Micor Compa-Station Repeater
--- In Repeater-Builder@yahoogroups.com, wn1b8 [EMAIL PROTECTED] wrote: I have for sale a Micor Compa-Station Non-Unified repeater (less cabinet) that includes the following items: TLD1683C Transmitter (110W Intermittent Duty) TRD1803BB Receiver currently on 155.28 MHz. TRD1803BB Receiver currently on 155.34 MHz. TPN1110B Power Supply TLN4959A Chassis TLN4670BPR Line Driver Card TLN4635CPR Station Control Card TLN4961A0490P Multiple Console Card TLN4960A1291H DC Transfer Card TLN1467A099B4 Digital Decoder Card TLN5745A1194N Multi PL Decoder Card Also have the ribbon cable that interconnects the receivers, two BNC to phono RF cables, and manual. All are quite clean and appear to be in great shape. I have not assembled and tested this repeater but believe it to be in operational condition. I'd like $75.00 plus shipping or will swap for something in the Radius line (M10, M100, M120, GM300) in the 438 450 MHz. range. You can e-mail me direct at WN1B8 at yahoo dot com, or WN1B at key eight you oh dot com. Thanks, Scott Madison Repeater has been sold. Thanks, Scott 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] Micor Compa Exciter/PA
I recently picked up a Micor Compa-Station exciter/PA. I know its for 132-174 MHz. and I believe it to be a 100 watt PA deck, but I can't seem to find what the duty cycle is. The PA board part number is TLD5953A1093R. It has the 14 1/2 long Micor fins across the top of the module. The module, with the fins, is 6 high. I know this isn't the 100% duty cycle configuration, but can it be run at 100% if it has constant forced air cooling across the fins? Also, the board appears to be the same for the 100 watt 100% configuration. Is it possible to simply replant this board in the larger chassis/heat sink? Assuming for a moment that I could find a dead one. Any help and/or advice will be greatly appreciated. Scott Madison, WN1B 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: A Poor Man's Multicoupler?
This should work OK as long as you keep a few things in mind. First, the quality of drop splitters ranges from ultra cheap garbage to good. If you want very good or excellent, find a used 550 MHz, 750 MHz, or 862 MHz Scientific Atlanta headend combiner. But depending on how many remote sites you have, these may introduce more loss than you want. The isolation on a god drop splitter will be about 24 dB. That is, if you terminate all ports either with connections to receivers or with resistor terminators. Off the top of my head, I'd be a bit cautious of the potential for saturation of the splitter cores from strong VHF field of the repeater transmitter. Cheap splitters, or splitters made a few years ago weren't designed for high levels of RF. Their cores can saturate easily. If you can notch or passband the UHF feed, I'd do it. Using a preamp in line will provide the passbanding that you need, also. --- In Repeater-Builder@yahoogroups.com, Bob [EMAIL PROTECTED] wrote: So, I was thinking (often a dangerous proposition)... If I want to run several UHF link receivers off a single antenna, what's to stop my using a conventional TV splitter? If I add a preamp to compensate for the loss introduced by the splitter and the 75/50 Ohm mismatch, is there any particular reason why this scheme won't work? Will there be enough isolation to prevent possible rcvr interaction? Whadya think? Bob K5IQ WPXA535 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] Source for MRF654
Does anyone have a good source for MRF654 transistors? RF Parts wants over $25 each. That just seems a bit steep to me. Thanks, Scott Madison 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: Circulator vs. Isolator
Eric, Jim, and others, Thanks for the replies. Your explanations were as I expected but I wanted to be certain. I am very familliar with circulators as we use them quite often in microwave configurations. When I became aware of isolators, I attempted to research them and concluded that there was little difference in the aforementioned application. I thought maybe I was missing something, but I guess not. Thanks again for all your help. 73, Scott Madison, WN1B --- In Repeater-Builder@yahoogroups.com, Eric Lemmon [EMAIL PROTECTED] wrote: Scott, A ferrite circulator is simply a three-terminal device that is designed to steer RF currents so that they move in one direction around a circular path between ports that are spaced 120 degrees apart. What comes in at one port will leave at the next port if the terminating impedance is 50 ohms. Your assumption of its operation is exactly correct. An isolator is a circulator that includes a 50 ohm load on the third port. Some manufacturers use the terms interchangeably, but generally the term circulator describes the ferrite, garnet, and magnetic guts that are inside the box. A single isolator generally provides about 35 dB of isolation to protect a PA from incoming RF that can cause intermodulation. A dual isolator is just two single circulators in series, with two external dummy loads, that can provide about 70 dB of isolation. Since a circulator is a non-linear device, it will always generate a strong second harmonic. For this reason, any ferrite circulator/isolator must always be followed by a notch filter, a low-pass filter, or a bandpass cavity to eliminate or greatly reduce the second harmonic. 73, Eric Lemmon WB6FLY wn1b8 wrote: List members, Is there any reason that a circulator could not be used as an isolator? Assuming appropriate power handling capabilities, I would think the former would work just fine. Amp output into port 1, Bp/antenna on port 2, dummy load on port 3, and any reflected power from the Bp/antenna should be absorbed by the dummy load. Am I missing anything here? 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] Circulator vs. Isolator
List members, Is there any reason that a circulator could not be used as an isolator? Assuming appropriate power handling capabilities, I would think the former would work just fine. Amp output into port 1, Bp/antenna on port 2, dummy load on port 3, and any reflected power from the Bp/antenna should be absorbed by the dummy load. Am I missing anything here? Scott Madison, WN1B Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
[Repeater-Builder] GM300 TX Calibration
Greetings, Is there anyone on the list that has an understanding of the soft calibration procedures for the M120/GM300 radios that would be willing to help me? I'd prefer off list to as to not take up list bandwidth. Thanks, Scott Madison, WN1B 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] SINAD measurements
I am curious to know what everyone on the list uses to perform SINAD measurements? Anyone doing it without a service monitor? If so, what do you use for a 1KHz. notch? Can anyone recommend a design to construct a deep notch? I can only get about 20 dB through my Datong filter. Thanks, Scott Madison, WN1B 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: Where to buy DB 224e
For the benefit of those new to the list, where is Cook Tower? Any chance they have a web site? Scott Madison, WN1B/8 --- In Repeater-Builder@yahoogroups.com, russ [EMAIL PROTECTED] wrote: Glad I could be of help Ralph, Please let us know how you make out. I had a antenna messed up by a storm and they had a replacement in stock and got it to me earlier in the week the same day. Very best of 73, Russ, W3CH Trustee Metro-Comm, INC, W3PS/RPT. - Original Message - From: Ralph Mowery [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: Thursday, November 18, 2004 7:23 PM Subject: Re: [Repeater-Builder] Where to buy DB 224e --- russ [EMAIL PROTECTED] wrote: I buy all my repeater antennas from Cook Towers. They have them in stock in the Ham bands and discount to us Hams. Good luck and 73, Russ, W3CH - Original Message - From: Ralph Mowery [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: Thursday, November 18, 2004 7:26 AM Subject: [Repeater-Builder] Where to buy DB 224e I have seen this discussed before but looked in the past messages and could not find it. Where are some places to buy the DB224 exposed 4 bay dipole antenna that will work in the 140 to 150 range for a ham repeater ? Thanks Russ. That is the name I was looking for but just could not remember it or find it in the past messages. 73 de KU4PT __ Do you Yahoo!? Meet the all-new My Yahoo! - Try it today! http://my.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/
[Repeater-Builder] Re: Communication Speciakist ss-32 tone bord Info Needed
--- In Repeater-Builder@yahoogroups.com, w9mwq [EMAIL PROTECTED] wrote: Can anyone tell me about this tone board and would it be a good choice to use on an repeater, the receiver that it will be hooked to is a GO Mastr ER41 and how hard would it be to hook up? Or would it get hooked to the RLC2 controller on the cos line? Mathew w9mwq Mat, Use the CommSpec TS64. It has both encode and decode functionality. You can also look at Norcomm NC106. Scott Madison, WN1B/8 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] Solid State VHF PAs
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 * 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: Solid State VHF PAs
Sorry, that should be assessing, not accessing. Is there a way to edit messages after they've been posted? Scott Madison, WN1B/8 --- In Repeater-Builder@yahoogroups.com, wn1b8 [EMAIL PROTECTED] 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 * 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: 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 * 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: Need Motorola TPN1041B
Thanks Mike and Neil. I have a feeling that shipping will be a killer on this one. This is one heavy transformer. I'll check it out, though. That may be the best solution. Scott --- In Repeater-Builder@yahoogroups.com, Neil McKie [EMAIL PROTECTED] wrote: Peter Dahl Company http://www.pwdahl.com Neil Mike WA6ILQ wrote: At 08:16 AM 10/26/04, you wrote: We had a major transformer failure this last week and had to put the spare power supply in. As a result, we're looking for a good Motorola TPN1041B power supply or a good 25D8274H01 transformer. These are used in the 200, 250, and 300 watt Metropolitan tube PAs. If anyone has one for sale that is within reasonable driving distance of Detroit, please drop me an e-mail. Thanks, Scott Madison, WN1B Years ago a tech for a local paging operation commented that having Peter Dahl Company rebuild the transformers was cheaper than getting replacemnts. The economics may have changed since then, but it might be worth: (a) pricing out the shipping, and (b) dropping Dahl an email. de Mike WA6ILQ, who still wishes that he had a picture of the quick fix on the Collins TX at KALI (10kw AM) The transformer HV winding had shorted to the case. The fix until Collins could get a new one to them was to stand the transformer on two 4x4s wrapped in a plastic tarp, and a LOT of warning signs. 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 Motorola TPN1041B
We had a major transformer failure this last week and had to put the spare power supply in. As a result, we're looking for a good Motorola TPN1041B power supply or a good 25D8274H01 transformer. These are used in the 200, 250, and 300 watt Metropolitan tube PAs. If anyone has one for sale that is within reasonable driving distance of Detroit, please drop me an e-mail. Thanks, Scott Madison, WN1B 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/
[SPAM] - [Repeater-Builder] Re: Motorola Radius/GM300 - Email found in subject
--- In Repeater-Builder@yahoogroups.com, Kevin Bednar [EMAIL PROTECTED] wrote: Scott, After you pulled and bypassed the final, what was the lowest power you could get out of it while still being stable? I'm thinking about doing the same to a VHF maxtrac to use as an exciter for a cont duty PA, but it only needs about 400mw to drive it to full output. Thanks. Kevin K2KMB Hi Kevin, That is a very good question. I didn't try adjusting the PO as it fell right about where I wanted it. I received the service manual and schematic for it yesterday and had just a few minutes to look it over last night. It would appear that the 1-10 watt version is basically what I have made, the 45 watt PA up through the driver, which is now the final. Same transistor but a few capacitor value changes. If this is the case, Motorola rates this as a 1 to 10 watt radio. I would think you should be able to lower it to 1 watt. You may have to go back a stage to get your 500 mW. I seem to recall someone else's post that indicated thay had used the input to the PA module which gave them 700 mW. You might want to look for this post. 73, Scott Madison, WN1B 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 Radius/GM300
--- In Repeater-Builder@yahoogroups.com, Steaven Rogers, W4YI [EMAIL PROTECTED] wrote: Has anyone here used a Radius or GM300 to make a repeater? I have a pair of Radius (M120) UHF mobiles wired up and working, but I would like to add a third one to use as a link to a second repeater. Can anyone give any input on how to go about hooking up the third radio to make it work properly?. This will be used for temporary installations only. Aside from the heat issue are there any other pitfalls or concerns I should look at for. These will be run on LOW power when being used to help with the heat. Thanks, Steaven, W4YI Hi Steaven, I have been playing around with the GM300s for a couple of weeks now with plans to use them as UHF link radios. In my humble opinion, they are a nice little radio and should do a good job. This, of course, will be proven or disproven in due time. Here are some of my observations: The heat issue can be a problem. Turning the power output down only adds to the heat problem. Instead, I took Kevin's (and others') advice and pulled and bypassed the final. The radio does about 3.5 watts this way. The output is very clean (I looked -70 dB and didn't detect a thing) and stable. I observed this into load with a 1:1 SWR as well as a 2.5:1 SWR. Aside from the (still) moderate heat produced, there were no detectable problems during a 35 minute keydown period. To overcome the heat issue, I simply added a computer processor fan to the back of the radio pair that triggers on from the receiver's COR (or tone squelch) and shuts off one to two minutes after the carrier or tone drops. (See Kevin's web site for the circuitry) My radios didn't display any significant drop in power until I tuned down around the low end of 433 MHz. The 16 pin connector has descriminator output, mic input, and PTT available on it making interfacing quite easy. The one drawback I have detected is the built in Tx delay. When added to the inherrent delay from an aftermarket tone decoder, which I am using on the VHF receiver married to this transmitter, the overall delay borders on the undesirable. I have a GM300 service manual and schematic en route, but without it I haven't determined a work-around. I suspect this delay is intentional and can be altered through minor component or circuitry changes. I hope this helps. Good luck. Scott Madison, WN1B 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 GM300
--- In Repeater-Builder@yahoogroups.com, Mike WA6ILQ [EMAIL PROTECTED] wrote: The GM300 is a repackaged and updated Maxtrac, and a GR-series is two of them in a repeater housing. The Maxtrac / GM-series is designed as a mobile radio ,and I'd take all the normal precautions when running a mobile in high-duty-cycle usage. I believe that there is a large heatsink that is available as a replacement part They also made some 2w Maxtracs that will do continuous duty, and in link service with a beam antenna that may be enough (or tack on an external amplifier) - look for a D04MJA on eBay. The zero is used to mean under 3w or RX only. See www.repeater-builder.com on the Moto page under Figuring out what you have Mike WA6ILQ Thanks Mike. Very usefull information. Scott, WN1B 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 GM300
Greetings, Does anyone have any experience using the Motorola GM300 radios as crossband link transceivers? I have successfully reprogrammed the UHF transceiver for 434 MHz. use. All appears to work well. I understand that I can mate this to a VHF version (reprogrammed for our 2 meter input frequency) and the two will successfully crossband. I realize I have to make up the cable to connect them. I'm looking for feedback from someone who has done this. Pros? Cons? Suggestions? I see there is a squelch modification that is recommended which I will do. Anyone have a scanned service manual? I have the schematic but would like a board shot so I can identify specific parts from the schematic. Any recomendations will be welcome. 73, Scott Madison, WN1B 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 GM300
Sorry about posting an inquiry on a previously covered topic. I had done a search on GM300 and come up dry. Can't explain it, but it happened. I have read all the posts from last months inquiries. There is a lot of good information there. I'm still interested in anyone's comments, though. You can e-mail them directly to me rather than take up bandwidth here. 73, Scott Madison, WN1B --- In Repeater-Builder@yahoogroups.com, wn1b8 [EMAIL PROTECTED] wrote: Greetings, Does anyone have any experience using the Motorola GM300 radios as crossband link transceivers? I have successfully reprogrammed the UHF transceiver for 434 MHz. use. All appears to work well. I understand that I can mate this to a VHF version (reprogrammed for our 2 meter input frequency) and the two will successfully crossband. I realize I have to make up the cable to connect them. I'm looking for feedback from someone who has done this. Pros? Cons? Suggestions? I see there is a squelch modification that is recommended which I will do. Anyone have a scanned service manual? I have the schematic but would like a board shot so I can identify specific parts from the schematic. Any recomendations will be welcome. 73, Scott Madison, WN1B 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/
