[Repeater-Builder] ID this Board....
Wonder if somebody can help in id this board: YLN4017A, it is in a Mitrek T74 radio. Thanks in advance JT 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] ID this Board....
The YLN4017A is listed as "BD BUSCOM AUDIO INTFC" and is priced at $115.33, but I have never seen one in use. 73, Eric Lemmon WB6FLY 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] ID this Board....
Thank you Eric, this is also the first time i see this board even i have seen 100's of Mitreks, i can't find also any info on the manuals i have, will try to draw a schematic from it and try to figure what it does JT - Mensaje original - De: Eric Lemmon Para: Repeater-Builder@yahoogroups.com Enviado: Saturday, May 29, 2004 6:25 PM Asunto: Re: [Repeater-Builder] ID this Board The YLN4017A is listed as "BD BUSCOM AUDIO INTFC" and is priced at$115.33, but I have never seen one in use.73, Eric Lemmon WB6FLY 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] Slightly off kilter ... 121.5 MHz
Neil, I once moved a Motorola Sensicon "A" receiver from 173 to 121 MHz for some reason I can't remember why in the world I modified to that frequency. it's been so long ago but it worked fine. It took a little work and I changed the number of times the oscillator multiplier multiplied to get the injection but other than that it was just working with the front end to get it down. Paul WB5IDM -Original Message- From: Neil McKie [mailto:[EMAIL PROTECTED] Sent: Saturday, May 29, 2004 4:51 PM To: Repeater Builder Subject: [Repeater-Builder] Slightly off kilter ... 121.5 MHz Any one on here ever convert any Motorola Motrac, Micor, Mitrek or Mocom-70 receivers to 121.5 MHz Or GE Mastr-Pro, Exec, Mastr II or Exec II receivers to 121.5 MHz? I have one to several of each mentioned above. Thank you, 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/
RE: [Repeater-Builder] Slightly off kilter ... 121.5 MHz
Tom, Like I said in the earlier email there was some reason I moved one to somewhere that frequency, pretty sure it was some kind of NASA link from orbiting aircraft and it was FM, not AM. Paul WB5IDM -Original Message- From: Tom Manning [mailto:[EMAIL PROTECTED] Sent: Saturday, May 29, 2004 7:13 PM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Slightly off kilter ... 121.5 MHz Neil I hope you know 121.5mhz is AM. The receivers you quote are all FM I believe. As you may know the 121.5mhz frequency is emergency primarily for aircraft. Sometimes you can hear interesting things on this and 243.0mhz which is military aircraft emergency frequency. 73's de Tom Manning, AF4UG Neil McKie wrote: > Any one on here ever convert any Motorola Motrac, Micor, Mitrek or > Mocom-70 receivers to 121.5 MHz > > Or GE Mastr-Pro, Exec, Mastr II or Exec II receivers to 121.5 MHz? > > I have one to several of each mentioned above. > > Thank you, > > Neil - WA6KLA > > > 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/
Re: [Repeater-Builder] Slightly off kilter ... 121.5 MHz
I think I got rid of all of my Sensicon 'A's a very long time ago. Perhaps Mike Morris still has some in his garage museum. If you don't believe me, you really need to go look or have Mike take pictures of it. Now that you mention it, I do remember someone seriously padding those capacitor disks on the bottom of the front-end strip lines moving that front end somewhere ... been a long time ago though ... Thanks for your input, Neil Paul Finch wrote: > > Neil, > > I once moved a Motorola Sensicon "A" receiver from 173 to 121 MHz > for some reason I can't remember why in the world I modified to > that frequency. it's been so long ago but it worked fine. It took > a little work and I changed the number of times the oscillator > multiplier multiplied to get the injection but other than that it > was just working with the front end to get it down. > > Paul > WB5IDM > > -Original Message- > From: Neil McKie [mailto:[EMAIL PROTECTED] > Sent: Saturday, May 29, 2004 4:51 PM > To: Repeater Builder > Subject: [Repeater-Builder] Slightly off kilter ... 121.5 MHz > > Any one on here ever convert any Motorola Motrac, Micor, Mitrek or > Mocom-70 receivers to 121.5 MHz > > Or GE Mastr-Pro, Exec, Mastr II or Exec II receivers to 121.5 MHz? > > I have one to several of each mentioned above. > > Thank you, > > Neil - WA6KLA > > 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: Slightly off kilter...121.5 MHz
Neil, One very serious issue with what you are considering is that of the severe limiting that takes place in an FM receiver's IF stages. The purpose of this limiting is to remove the AM component of the incoming signal. Even if you feed an AM detector in parallel with the discriminator you won't get much detected AM signal out of it. It would be much simpler to find an old scanner with aircraft band at a garage sale or flee market. Or you could maybe find an old Narco or other commercial A/C receiver on ebay or somewhere. I have had some surplus crystal controlled FAA receivers in the past (tube type) that worked OK for monitoring a fixed channel. You might check with some local CAP types and see what they suggest. There are many options out there but converting an FM receiver to AM is going to be a stretch. Good luck, Al, K9SI >Date: Sat, 29 May 2004 14:50:30 -0700 >From: Neil McKie <[EMAIL PROTECTED]> > Subject: Slightly off kilter ... 121.5 MHz > > > Any one on here ever convert any Motorola Motrac, Micor, Mitrek or > Mocom-70 receivers to 121.5 MHz > > Or GE Mastr-Pro, Exec, Mastr II or Exec II receivers to 121.5 MHz? > > I have one to several of each mentioned above. > > Thank you, > > 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] ID this Board....
You're welcome! Since the YLN4017A board is still an active part number with Motorola, perhaps you can get the information you seek by calling Parts ID at 800-422-4210 and asking for the manual number that covers YLN4017A. The clerk will advise you of the complete manuals that include the information for that board, but you will not be able to buy just the sheets for the board alone. In other words, you will have to buy the service manual for a particular radio or station, just to get the sheets you need. However, that might be a very good investment, because you may find that other boards/modules are included within that manual, that are useful to you. Since there may be several manuals that include the information for the YLN4017A board, be careful to buy the one that is the best value. Good luck in your quest. 73, Eric Lemmon WB6FLY 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] Crossband Simplex Repeater
hi all can any one tell me how set 2 radios back 2 back to do uhf/vhf Crossband Simplex Repeater 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 Help locating Schematics
Help need Schematics for a Systron Donor Spectrum Analyzer, Mod # 762-1. I need the Schematics for the Microwave Tuning Unit Model 809-1? Scott Miller (540) 657-6168 hp (540) 226-0816 cp Scoutmaster Troop 142 Aquia Chapter Advisor Amangamek Wipit, Lodge 470 C-26-93, A Good Old Beaver too... || <-<|--<<< || 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] IC-2720 as crossband repeater base?
Evening. Rob, KG7YY, here. I bought an Icom IC-2720 for the sake of its crossband repeater capability, and would like to use it in that role with my 440 MHz HT as the mobile/control element. Other Icoms had DTMF decoders available; the 2720 does not. Additionally, there is the matter of IDing on the control link from the radio. Has anyone else on this list done anything with this radio to add control and ID features to it when it's in its crossband mode? de kg7yy 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] WTT: Mirage B3016 2 Mtr Amp for 2 Mtr Repeater Amp
Several people responded to my need for an amp, and thought we had one donated, however turns out it was no count, good intentions on the gentleman's part. As funds are low for the reapeater project, I would like to entertain a trade on a full duty cycle 2 meter repeater amp, 5 watts or less drive with 100 watts out for my Mirage B3016 2 Meter Mobile Amp with control Head. If interested please let me know. Amp must be shippable. Thanks. Mathew 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: Wacom WP-641, correction on its specs...
1) Yes the intention is to put both 147.09tx/147.69rx and APRS packet 144.39 on the same antenna. 2) The WP-641 is spec'd for 500 KHz separation, and works very well at 600 KHz separation. The repeater is very sensitive, apparently little desense. It's a high power Micor cranked down to 75 watts. The packet 144.39 is a lower power Micor cranked down to 30 watts. We have other sites using the WP-641 successfully as 2 meter voice repeaters (600 KHz separation). 3) Eric's suggestion that I try adding to the WP-641 by putting two additional band pass cavities before the 147.690 receiver and tee'ing the antenna off to the packet radio with two band pass cavities (144.39) would be something I am tempted to try. In my original posting I said I had 3 DB products bandpass cavities, but checking further I actually have 4 of them. In my earlier posting I noted that they were old DB Products rectangular bandpass cavitites (4.5" square by 21" high). If anyone has any specs on it would be appreciated. But since these are only band pass and not band pass/band reject I would guess the 147.09 tx might severely impace the 144.39 receiver? Any suggestion on improving the reject? Again if all else fails I have a set of WP-639's which I could split, 2 cans on the 147.69 receive and two on the 144.39 packet. These are bpbr cans but I had another use for them...maybe Ill have to use them. Does this stuff ever show up on e-bay? Ron N5IN --- In Repeater-Builder@yahoogroups.com, Kevin Custer <[EMAIL PROTECTED]> wrote: > I own several sets of Wacom 641's, so I'll correct Eric's figures. The > Wacom 641 is a 4 cavity BpBr duplexer using 8 inch cans. > > Eric Lemmon wrote: > > >A 2m repeater on 147.090/147.690, with a 50 watt transmitter and a 0.35 uV receiver generally requires about 88 dB of isolation for no desense. The WP-641 duplexer is rated at 85 dB, > > > > While the WP-641 is rated at 85 dB, that spec is at the highband > literature standard of 500 kiloHertz separation, not 600 kc as > referenced above, when used on a 2 meter repeater. > > >but most can manage only 80-83 dB. > > > > Incorrect, Wacom specified the WP-641 at 90 dB isolation at 600 kc, but > they will actually manage 93 dB with careful tuning. > 93 dB will allow a 100 watt 2 meter repeater to properly work using a > .35 uV (-116 dBm) receiver. A *good* repeater like a Micor or Mastr II > (read less than typical transmitter side band noise) will allow a 100 > watt repeater operate properly with a factory preamp (-125 dBm) > receiver. Granted, this is its limit, but that isn't too bad considering. > > A Tube Type amplifier (GE 4EF5A1) or PLL exciter and solid state PA will > allow about 250 watts to be duplexed using the Wacom WP-641. > > These specifications can be backed up from the factory literature > available here: > http://www.repeater-builder.com/pdf/wp641.pdf > > Maybe Eric was thinking of the WP-639 duplexer that uses 4, 5 inch > cans? His figures would be much closer > > 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] Crossband Simplex Repeater
BESIDES GENERAL OPTION THAT CAN BE SUGGESTED "STICK A PAIR OF RADIOS TOGETHER USING ___"LET ME ASK A COUPLE OF QUESTIONS TO REFINE THE RESPONSE. WHAT RADIOS DO YOU PLAN TO USE ? OR DO YOU NEED A SUGGESTION WHAT BANDS DO YOU WANT TO LINK ? COMMERCIAL, HAM, PUBLIC SAFETY ? WHAT TYPE OF SYSTEMS DO YOU PLAN TO CROSSBAND ? CONVENTIONAL REPEATERS, SIMPLEX FREQUENCIES, TRUNKED SYSTEM TALKGROUPS ? WHAT IS THE INTENDED COVERAGE AREA ? THERE ARE SEVERAL OPTIONS USING EITHER HAND-HELD RADIOS, MOBILE RADIOS, BASE STATIONS & REPEATERS OR COMPLEX DEVICES LIKE THE JPS SWITCH. .BOB The best thing to hit the Internet in years - Juno SpeedBand! Surf the Web up to FIVE TIMES FASTER! Only $14.95/ month - visit www.juno.com to sign up today! Yahoo! Groups Links <*> 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] Crossband Simplex Repeater
My view is that a crossband repeater is not a simplex repeater. If you are going to operate in the Amateur Radio bands, you can use a dual-band transceiver with the cross-band repeat function, such as Alinco's DR-605T. In the commercial bands, you can use Link Communications' TCB-1 Tactical Communications Bridge to connect two radios together. Motorola offers several cross-band repeaters that comprise a R.I.C.K. and two mobile radios in a box with a power supply. The R.I.C.K. interfaces two radios such as the GM300, M1225, SM50/120, or CDM750. You can use a "simplex repeater controller" such as Zetron's Model 19B Simplexor, but voice storage and playback is unnecessary in cross-band operation. 73, Eric Lemmon WB6FLY s_alajeel wrote: > > hi all can any one tell me how set 2 radios back 2 back to do > uhf/vhf Crossband Simplex Repeater > > > > 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: Wacom WP-641, correction on its specs...
Lloyd built a 2M RPTR / Packet Combiner using a 641 plus 2 additional 8" cavities. I have one similar in Rockdale, TX with a Fire Repeater, plus a 155.280 EMS simplex channel. Maybe TX/RX or John Elliot in Waco may have the plans. 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/
RE: [Repeater-Builder] Re: Wacom WP-641, correction on its specs...
Yes, they show up on ebay regularly. You should be able to find a 4-Cavity WACOMs for around $400 and 6-cavity ones for no more than $500-550. There were some at Dayton for $300-$400, as well. Check with your local U.S. Forest Service radio shop - they've been getting rid of lots of the 6-cavity ones for almost giveaway prices (and sometimes they are actually giving them away). LJ Original Message: - From: Ron Stordahl N5IN [EMAIL PROTECTED] Date: Sun, 30 May 2004 17:37:45 - To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Re: Wacom WP-641, correction on its specs... 1) Yes the intention is to put both 147.09tx/147.69rx and APRS packet 144.39 on the same antenna. 2) The WP-641 is spec'd for 500 KHz separation, and works very well at 600 KHz separation. The repeater is very sensitive, apparently little desense. It's a high power Micor cranked down to 75 watts. The packet 144.39 is a lower power Micor cranked down to 30 watts. We have other sites using the WP-641 successfully as 2 meter voice repeaters (600 KHz separation). 3) Eric's suggestion that I try adding to the WP-641 by putting two additional band pass cavities before the 147.690 receiver and tee'ing the antenna off to the packet radio with two band pass cavities (144.39) would be something I am tempted to try. In my original posting I said I had 3 DB products bandpass cavities, but checking further I actually have 4 of them. In my earlier posting I noted that they were old DB Products rectangular bandpass cavitites (4.5" square by 21" high). If anyone has any specs on it would be appreciated. But since these are only band pass and not band pass/band reject I would guess the 147.09 tx might severely impace the 144.39 receiver? Any suggestion on improving the reject? Again if all else fails I have a set of WP-639's which I could split, 2 cans on the 147.69 receive and two on the 144.39 packet. These are bpbr cans but I had another use for them...maybe Ill have to use them. Does this stuff ever show up on e-bay? Ron N5IN --- In Repeater-Builder@yahoogroups.com, Kevin Custer <[EMAIL PROTECTED]> wrote: > I own several sets of Wacom 641's, so I'll correct Eric's figures. The > Wacom 641 is a 4 cavity BpBr duplexer using 8 inch cans. > > Eric Lemmon wrote: > > >A 2m repeater on 147.090/147.690, with a 50 watt transmitter and a 0.35 uV receiver generally requires about 88 dB of isolation for no desense. The WP-641 duplexer is rated at 85 dB, > > > > While the WP-641 is rated at 85 dB, that spec is at the highband > literature standard of 500 kiloHertz separation, not 600 kc as > referenced above, when used on a 2 meter repeater. > > >but most can manage only 80-83 dB. > > > > Incorrect, Wacom specified the WP-641 at 90 dB isolation at 600 kc, but > they will actually manage 93 dB with careful tuning. > 93 dB will allow a 100 watt 2 meter repeater to properly work using a > .35 uV (-116 dBm) receiver. A *good* repeater like a Micor or Mastr II > (read less than typical transmitter side band noise) will allow a 100 > watt repeater operate properly with a factory preamp (-125 dBm) > receiver. Granted, this is its limit, but that isn't too bad considering. > > A Tube Type amplifier (GE 4EF5A1) or PLL exciter and solid state PA will > allow about 250 watts to be duplexed using the Wacom WP-641. > > These specifications can be backed up from the factory literature > available here: > http://www.repeater-builder.com/pdf/wp641.pdf > > Maybe Eric was thinking of the WP-639 duplexer that uses 4, 5 inch > cans? His figures would be much closer > > Kevin Custer 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/
Re: [Repeater-Builder] Re: Wacom WP-641, correction on its specs...
Ron, My suggestion wasn't really to tee both radios together, but to minimize interference between them if you used separate antennas that were relatively close to each other. To combine two systems into one antenna poses some significant challenges. Were this a commercial installation with the money to pay for the equipment, a cavity/ferrite or cavity/hybrid combiner would probably be used, along with a cavity multicoupler. A commercial installation usually combines the transmitters into one antenna, with the receivers all fed from a multicoupler. But, that's not the case here, so let's boldly press on... A bandpass cavity has far more selectivity in the "pass" function than does a pass/reject cavity, so you might be able to tee the packet radio into the antenna used by the repeater- if you use two or three sharply-tuned bandpass cavities on the packet. In order to achieve optimum isolation, the loops on each bandpass cavity should be adjusted so that the VSWR and return loss is the same in both directions. Don't go overboard on the loop settings; the performance of two cavities each set at 0.5 dB is better than one cavity set at 1.0 dB. The jumpers between cavities must be cut so that the match is maintained between cavities. Try it and see. You might find that you can couple the APRS without degrading the repeater. 73, Eric Lemmon WB6FLY Ron Stordahl N5IN wrote: > > 1) Yes the intention is to put both 147.09tx/147.69rx and APRS > packet 144.39 on the same antenna. > 2) The WP-641 is spec'd for 500 KHz separation, and works very well > at 600 KHz separation. The repeater is very sensitive, apparently > little desense. It's a high power Micor cranked down to 75 watts. > The packet 144.39 is a lower power Micor cranked down to 30 watts. > We have other sites using the WP-641 successfully as 2 meter voice > repeaters (600 KHz separation). > 3) Eric's suggestion that I try adding to the WP-641 by putting two > additional band pass cavities before the 147.690 receiver and tee'ing > the antenna off to the packet radio with two band pass cavities > (144.39) would be something I am tempted to try. > > In my original posting I said I had 3 DB products bandpass cavities, > but checking further I actually have 4 of them. > > In my earlier posting I noted that they were old DB Products > rectangular bandpass cavitites (4.5" square by 21" high). > > If anyone has any specs on it would be appreciated. > > But since these are only band pass and not band pass/band reject I > would guess the 147.09 tx might severely impace the 144.39 receiver? > > Any suggestion on improving the reject? > > Again if all else fails I have a set of WP-639's which I could split, > 2 cans on the 147.69 receive and two on the 144.39 packet. These are > bpbr cans but I had another use for them...maybe Ill have to use them. > > Does this stuff ever show up on e-bay? > > Ron N5IN > > --- In Repeater-Builder@yahoogroups.com, Kevin Custer <[EMAIL PROTECTED]> > wrote: > > I own several sets of Wacom 641's, so I'll correct Eric's figures. > The > > Wacom 641 is a 4 cavity BpBr duplexer using 8 inch cans. > > > > Eric Lemmon wrote: > > > > >A 2m repeater on 147.090/147.690, with a 50 watt transmitter and a > 0.35 uV receiver generally requires about 88 dB of isolation for no > desense. The WP-641 duplexer is rated at 85 dB, > > > > > > > While the WP-641 is rated at 85 dB, that spec is at the highband > > literature standard of 500 kiloHertz separation, not 600 kc as > > referenced above, when used on a 2 meter repeater. > > > > >but most can manage only 80-83 dB. > > > > > > > Incorrect, Wacom specified the WP-641 at 90 dB isolation at 600 > kc, but > > they will actually manage 93 dB with careful tuning. > > 93 dB will allow a 100 watt 2 meter repeater to properly work using > a > > .35 uV (-116 dBm) receiver. A *good* repeater like a Micor or > Mastr II > > (read less than typical transmitter side band noise) will allow a > 100 > > watt repeater operate properly with a factory preamp (-125 dBm) > > receiver. Granted, this is its limit, but that isn't too bad > considering. > > > > A Tube Type amplifier (GE 4EF5A1) or PLL exciter and solid state PA > will > > allow about 250 watts to be duplexed using the Wacom WP-641. > > > > These specifications can be backed up from the factory literature > > available here: > > http://www.repeater-builder.com/pdf/wp641.pdf > > > > Maybe Eric was thinking of the WP-639 duplexer that uses 4, 5 inch > > cans? His figures would be much closer > > > > Kevin Custer > > > 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] Need parts
> The frequency it is for is not important. Tell us the model such as Micor, > MSR2000, etc. > > "jim" <[EMAIL PROTECTED]> wrote: > > > Hi got a friend that has a Motorola Repeater and needs > > a part as follows. > > > > The module that we need for 147.300 is Motorola part number TRN5069A, audio > > and squelch module It's for an MSR2000 100 watt continuous repeater. Yep you are right... should have said that... thanks > > > > jim kd8yx > > lapeer county mi > > 146.620 7k > > 442 750 5k > > > > > > > > > > > > > > > > > > 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/
