Re: [Repeater-Builder] Re: Help Identifying Matrix in Mastr II
That unit would have needed a C800 or C900 control head and was most likely a SP build for a Federal agency, several generations back as radio systems go. The dual RX allowed the radio top have good sensitivity in both the 163 and 167 ranges as the front end filtering were not that wide and/or allowed for dual receive. The 1st IF outputs were combined and passed to a comman detector. A switching matrix would have selected the appropriate ICOMs for TX and RX based on the channel selector position. A PSLM board might have been installed to allow scanning on one receiver. Basically a you tell us what you need and we will build it project. Hope you have a manual or lots of patience to sort things out. Milt N3LTQ - Original Message - From: Laryn Lohman lar...@hotmail.com To: Repeater-Builder@yahoogroups.com Sent: Tuesday, May 26, 2009 10:12 PM Subject: [Repeater-Builder] Re: Help Identifying Matrix in Mastr II the part number 19B233115G1 appears to be a box rather than a component. Yes, as stated, it is the box containing the matrix. Please advise the frequencies of the ICOMs, along with their positions in the radio. TX-- F1 167.2625 F2 .3125 F3 .400 F4 .5625 F5 .750 F6 .5375 F7 .650 F8 .3625 RX1-- F1 163.925 F2 .8875 F3 .8625 RX2-- F1 167.2625 F2 .3125 F3 .400 F4 .5625 F5 .750 F6 .650 F7 .3625 RX2 has only an RF section and oscillator section. The IF area is not populated except for 4 or 5 components. I suspect that you have an IMTS or MTS mobile telephone drawer, but the frequencies will provide valuable information. Naw I don't think so. And the radio is not duplexed... Hope this helps. Laryn K8TVZ 73, Eric Lemmon WB6FLY Yahoo! Groups Links
[Repeater-Builder] Diamond X500HNA antenna
I recall seeing posts from several who have used the Diamond X500HNA antennas with good results. We've got a VHF machine with one of these that's going back up. It was taken down because of a noise problem and sent back to Diamond for repair. It was/will be top mounted. For those who are using them, can you offer any suggestions as far as assembling, mounting or weatherproofing? Is it worthwhile to try to take extra steps to seal up the outer coupling joints? or to solder the element joints? Thanks. 73 Paul - KC0HST
Re: [Repeater-Builder] Diamond X500HNA antenna
A group I was in used to use both some Comet and Diamonds. We soldered the element joints AND covered the radome joints with the fancy heatshrink with the glue in it. They held up for at least 5 years before I moved and lost track of them -- they were also top supported, and I think that helped a lot too. One thing that bugs me about the lighter weight fiberglass antennas is radiation angle. Some of those high gain guys have very narrow vertical patterns -- especially at UHF. it doesn't seem it would take much whipping around in the wind to start throwing the pattern all over the place you know, down at the ground, now up at the sky, etc. as the antenna swings around. 73 DE N0MJS On May 27, 2009, at 12:52 PM, Paul Holm wrote: I recall seeing posts from several who have used the Diamond X500HNA antennas with good results. We've got a VHF machine with one of these that's going back up. It was taken down because of a noise problem and sent back to Diamond for repair. It was/will be top mounted. For those who are using them, can you offer any suggestions as far as assembling, mounting or weatherproofing? Is it worthwhile to try to take extra steps to seal up the outer coupling joints? or to solder the element joints? Thanks. 73 Paul - KC0HST -- Cort Buffington H: +1-785-838-3034 M: +1-785-865-7206 Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * Your email settings: Individual Email | Traditional * To change settings online go to: http://groups.yahoo.com/group/Repeater-Builder/join (Yahoo! ID required) * To change settings via email: mailto:repeater-builder-dig...@yahoogroups.com mailto:repeater-builder-fullfeatu...@yahoogroups.com * To unsubscribe from this group, send an email to: repeater-builder-unsubscr...@yahoogroups.com * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Diamond X500HNA antenna
Did you use silver solder or typical 60/40 or 50/50 solder? - Original Message - From: Cort Buffington A group I was in used to use both some Comet and Diamonds. We soldered the element joints Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * Your email settings: Individual Email | Traditional * To change settings online go to: http://groups.yahoo.com/group/Repeater-Builder/join (Yahoo! ID required) * To change settings via email: mailto:repeater-builder-dig...@yahoogroups.com mailto:repeater-builder-fullfeatu...@yahoogroups.com * To unsubscribe from this group, send an email to: repeater-builder-unsubscr...@yahoogroups.com * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
[Repeater-Builder] TX max power
Can some one with one of those fancy programs like Comm-Shop run it and tell me the max power a Exec II on UHF ham band run with a 75 isolation mobile duplexer. Assuming that the coax and ant are a ideal setup. Randy WB8ART
Re: [Repeater-Builder] Diamond X500HNA antenna
Just seal it up the best you can and pray for no lightning!! de, Lee K4LJ73 On Wed, May 27, 2009 at 1:52 PM, Paul Holm p...@chargertech.com wrote: I recall seeing posts from several who have used the Diamond X500HNA antennas with good results. We've got a VHF machine with one of these that's going back up. It was taken down because of a noise problem and sent back to Diamond for repair. It was/will be top mounted. For those who are using them, can you offer any suggestions as far as assembling, mounting or weatherproofing? Is it worthwhile to try to take extra steps to seal up the outer coupling joints? or to solder the element joints? Thanks. 73 Paul - KC0HST -- Smart pills are placebos, you can't fix stupid.
Re: [Repeater-Builder] Diamond X500HNA antenna
I'm betting it was 60/40 since it was just the Kester spool in one of the guy's bags. On May 27, 2009, at 1:04 PM, Paul Holm wrote: Did you use silver solder or typical 60/40 or 50/50 solder? - Original Message - From: Cort Buffington A group I was in used to use both some Comet and Diamonds. We soldered the element joints Yahoo! Groups Links -- Cort Buffington H: +1-785-838-3034 M: +1-785-865-7206
[Repeater-Builder] Service manuals
I have 5 boxes of mostly Motorola service manuals, some GE. Mostly 60's 70's vintage, i.e. micor, mocom, ht200, flexar, remotes, base, mobiles, etc. I can send you a file with the list. Free to good home/amateur use, but you must come get all of them, Im not shipping. Contact me directly. 73 Chris-KC4CMR kc4...@arrl.net
Re: [Repeater-Builder] Service manuals
Where are you loacted CHris? ccour79992 wrote: I have 5 boxes of mostly Motorola service manuals, some GE. Mostly 60's 70's vintage, i.e. micor, mocom, ht200, flexar, remotes, base, mobiles, etc. I can send you a file with the list. Free to good home/amateur use, but you must come get all of them, Im not shipping. Contact me directly. 73 Chris-KC4CMR kc4...@arrl.net mailto:kc4cmr%40arrl.net
[Repeater-Builder] Re: Help Identifying Matrix in Mastr II
--- In Repeater-Builder@yahoogroups.com, Milt men...@... wrote: A switching matrix would have selected the appropriate ICOMs for TX and RX based on the channel selector position. A PSLM board might have been installed to allow scanning on one receiver. Yeah that's probably the matrix board I've mentioned. What does PSLM stand for? Basically a you tell us what you need and we will build it project. Hope you have a manual or lots of patience to sort things out. Milt N3LTQ Well I'll not be worried about the matrix or systems board in this radio. I don't have a manual for this specific radio, but have enough manuals for other Mastr IIs to understand what I need to. It's a good parts radio. Laryn K8TVZ
RE: [Repeater-Builder] Re: Help Identifying Matrix in Mastr II
Laryn, PSLM = Priority Search Lock Monitor. See LBI-4691: www.repeater-builder.com/ge/lbi-library/lbi-4691i.pdf 73, Eric Lemmon WB6FLY -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of Laryn Lohman Sent: Wednesday, May 27, 2009 4:44 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Re: Help Identifying Matrix in Mastr II snip Yeah that's probably the matrix board I've mentioned. What does PSLM stand for? snip Well I'll not be worried about the matrix or systems board in this radio. I don't have a manual for this specific radio, but have enough manuals for other Mastr IIs to understand what I need to. It's a good parts radio. Laryn K8TVZ
RE: [Repeater-Builder] TX max power
Randy, Using a TX frequency of 443.000 MHz and a RX frequency of 448.000 MHz, and with a receive sensitivity of 0.35 uV, my CommShop program calculates that 100 watts of TX power requires at least 74 dB of isolation. Since a mobile (notch only) duplexer is hardly an ideal choice, I'd suggest keeping the power below 50 watts. Keep in mind that CommShop, like most similar programs, makes many assumptions that may or may not be true in your particular case. Keeping the PA from burning up due to a high duty cycle in repeater service may be more important than avoiding desense. 73, Eric Lemmon WB6FLY -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of wb8art Sent: Wednesday, May 27, 2009 11:11 AM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] TX max power Can some one with one of those fancy programs like Comm-Shop run it and tell me the max power a Exec II on UHF ham band run with a 75 isolation mobile duplexer. Assuming that the coax and ant are a ideal setup. Randy WB8ART
[Repeater-Builder] Re: TX max power
Thanks Eric, That is exactly what I was needing to know. This will give us a good starting point and since it is looking to run only 35 watts it should be OK. That is better than I expected. Anyway I believe it, (the duplexer) is only rated at 50 watts. Your a gentleman a scholar. Thanks Randy --- In Repeater-Builder@yahoogroups.com, Eric Lemmon wb6...@... wrote: Randy, Using a TX frequency of 443.000 MHz and a RX frequency of 448.000 MHz, and with a receive sensitivity of 0.35 uV, my CommShop program calculates that 100 watts of TX power requires at least 74 dB of isolation. Since a mobile (notch only) duplexer is hardly an ideal choice, I'd suggest keeping the power below 50 watts. Keep in mind that CommShop, like most similar programs, makes many assumptions that may or may not be true in your particular case. Keeping the PA from burning up due to a high duty cycle in repeater service may be more important than avoiding desense. 73, Eric Lemmon WB6FLY -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of wb8art Sent: Wednesday, May 27, 2009 11:11 AM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] TX max power Can some one with one of those fancy programs like Comm-Shop run it and tell me the max power a Exec II on UHF ham band run with a 75 isolation mobile duplexer. Assuming that the coax and ant are a ideal setup. Randy WB8ART
[Repeater-Builder] Re: OT: Dry Transfers for PCB Construction
Mike, I have used and had good luck using model paint in the small 1/2 ounce container and a model paint brush. Collin
