[Repeater-Builder] Dodge PHELPS model 497 a 6 cavitées?
hi all well i am looking any informations and best the spec of this duplexer Dodge PHELPS model 497 with 6 cavities? they ar green and fixed in a solid crate so they can be fixed in a bay. these are great and easy to adjust,i am going to use it in a radio site and i need these specification so if you have it ,could send me a picture or the spec?? send me an email at [EMAIL PROTECTED] thank you very much gervais,ve2ckn 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] WANTED
Lance - I have some of the reeds you need, $4.00 each Andy--NC Certified Firefighter III / Instructor II / EMT-AFCC Licensed Technician / Amateur Call NC4AB / Echolink Node 5761http://www.brinkleyelectronics.com -Original Message-From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED]On Behalf Of CaptainlanceSent: Wednesday, December 21, 2005 10:17 PMTo: Repeater-Builder@yahoogroups.comSubject: [Repeater-Builder] WANTEDI am looking for several Motorola TLN8381 PL reeds, 136.5 Hz. for a voter project... Please contact me if you have them to sell or trade. Lance N2HBA [EMAIL PROTECTED] YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
[Repeater-Builder] Cushman CE-50 (Sorry for being off topic)
I know is a little off the path but I really need some help with a Cushman CE-50. When the green signal light on the right hand side would not work, I found the two wires, a light green and a white with green stripe, had been cut and left hanging. Also a yellow wire from the deviation switch common post and another yellow wire and a green wire that went on inside the innards somewhere. Not having a service manual or schematic I don’t know what they went to or if a part has been removed. The monitor does not have the spectrum analyzer option. Randy B. YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service. -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.1.371 / Virus Database: 267.14.3/209 - Release Date: 12/21/2005
[Repeater-Builder] Re: Duplexer tuning with RF Power Change
Hi Gary, It's not exclusively related to the Loaded and Unloaded Q of the Cavity. Cavities do get warm under extreme conditions, but I've yet to feel a typical two-way radio cavity rise more than warm to the touch in high power pager type operation. I have seen some small cavity mfgrs place hefty heat sinks on the high current end of a cavity... but none of the mfgrs has actually offered up the honest technical reason why they use them. I once heated my lunch on a multi section tx band pass cavity used by KFOG FM in San Francisco (Sutro Tower Site). The high current end of the cavity would almost boil water during normal high power fm broadcast operation... Was very impressive... Back to square one of the topic. One can set up a band pass cavity using a service monitor. The final tx side BP Cavity adjustments should be checked with a watt meter (or two) included... under actual rf power. cheers, skipp [EMAIL PROTECTED] wrote: Skipp.Thank you for the info on duplexer tuning with RF power change. Interesting. Maybe expansion of the actual can due to heat vs Invar rods? Gary 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] cadillac,mi tower space needed
"Mark A. Holman" [EMAIL PROTECTED] wrote:Brad;Are you in Cadillac, MI. ? there was a attempt to put a UHF Business courtsey system between Big Rapids, Grand Rapids, and Cadillac all I heard was the color of money mentioned check with W8HVG Abe in GR via. Independent Repeater Assn. the Repeater Coordinators you may want to look the facts 1st.Mark AB8RUAllegan Co. MI.w8qpo wrote:hello group, i am looking for tower space around cadillac mi to put an ham repeater i am trying to link across mich and am having a hard time finding willing tower owners this area this is all nonprofit and out of our pockets i have the equipment just need space for vhf / uhf any input is welcome thanks brad w8qpo Yahoo! Groups Links hi mark, i live in saginaw i have 1repeater in saginaw ,[EMAIL PROTECTED] m46,and1in clare my father has a few in traverse city. need a place between any helpwould be great thanksbrad 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/begin:vcardfn:Mark A. Holmann:Holman;Mark A.org:Harvest Assembly of Godemail;internet:[EMAIL PROTECTED]title:Webmaster, IT Studentnote;quoted-printable:IT, Member IEEE, Life Member ARRL, Assoc. Member SBE, CRO=0D=0A=Welcome to the Snowy stuff of Michigan=0D=0A=x-mozilla-html:TRUEurl:http://www.ab8ru.orgversion:2.1end:vcard__Do You Yahoo!?Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. 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] Re: Duplexer tuning with RF Power Change
Skipp, I want to make sure I've got this straight in my head... For the final tweak on the transmit side bandpass setting I would: A) Look for minimum reflected power from the duplexer 'xmt' port back to towards the transmitter. B) And then I'd also look for maximum forward out of the duplexer 'ant' port towards the antenna. I suppose the wattmeters could cause some interaction that would change things when removed Am I close? Doug - Original Message - From: skipp025 To: Repeater-Builder@yahoogroups.com Sent: Thursday, December 22, 2005 11:16 AM Subject: [Repeater-Builder] Re: Duplexer tuning with RF Power Change Hi Gary, It's not exclusively related to the Loaded and Unloaded Q of the Cavity. Cavities do get warm under extreme conditions, but I've yet to feel a typical two-way radio cavity rise more than warm to the touch in high power pager type operation. I have seen some "small cavity" mfgrs place hefty heat sinks on the high current end of a cavity... but none of the mfgrs has actually offered up the honest technical reason why they use them. I once heated my lunch on a multi section tx band pass cavity used by KFOG FM in San Francisco (Sutro Tower Site). The high current end of the cavity would almost boil water during normal high power fm broadcast operation... Was very impressive... Back to square one of the topic. One can set up a band pass cavity using a service monitor. The final tx side BP Cavity adjustments should be checked with a watt meter (or two) included... under actual rf power. cheers,skipp [EMAIL PROTECTED]... wrote: Skipp.Thank you for the info on duplexer tuning with RF power change. Interesting. Maybe expansion of the actual can due to heat vs Invar rods? GaryYahoo! Groups Links* To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/* To unsubscribe from this group, send an email to: [EMAIL PROTECTED]* Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/ YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
[Repeater-Builder] Re: Duplexer tuning with Return Loss Bridge
Inexpensive directinal couplers will not have high enough directivity to give accurate readings. They will work, but the accuracy is degraded over a high directivity coupler. Roger W5RD --- In Repeater-Builder@yahoogroups.com, Andy [EMAIL PROTECTED] wrote: Is there any reason that a relatively cheap MiniCircuits directional coupler wouldn't work for this? P/N Z30-16-5-75 is $29.95 P/N ZADC-10-4-75 is $54.95 etc. These are a lot cheaper than the Eagles...is there a reason? Andy 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: Duplexer tuning with RF Power Change
Hi Doug, Doug Zastrow [EMAIL PROTECTED] wrote: Skipp, I want to make sure I've got this straight in my head... For the final tweak on the transmit side bandpass setting I would: A) Look for minimum reflected power from the duplexer 'xmt' port back to towards the transmitter. Yes, if the duplexer antenna port is a proper/true 50 ohm load. I use a termination/load for that adjustment. B) And then I'd also look for maximum forward out of the duplexer 'ant' port towards the antenna. No, you'd like to see that... but it won't happen with min swr (reflected power). Sometimes min reflected power and max output power are near the same adjustment location. One doesn't often see min ref pwr and max fwd power coincide. Unless you've checked with some high end test gear, you don't know what the transmit signal spectral purity is in detail. All the forward power might not be the best signal going out the pipe. Keep in mind the band pass cavity is also a tx signal filter... Crappy transmitters will be cleaned up a bit (sort of). Some of the lost forward tx power might be mucho undesired energy. Also keep in mind the minor changes in the rf amplifier performance with true vs reactive loads. The effect is much greater when you don't use a circulator. I suppose the wattmeters could cause some interaction that would change things when removed Am I close? Doug There will always be some interaction or reactance with every bit of added hardware. But using true 50 ohm loads, quality meters and coax cables helps to reduce serious system impedance bumps. cheers, skipp 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] New info added to the Vertex VXR-7000 page
I just added some new info, courtesy of WA6BZS to my Vertex VXR-7000 repeater page. It is about using a different audio input pin on the controller connector. Good stuff! I will also add info on getting a PL decode indication from the RJ jack on back of the repeater. WA6BZS also discovered that. There is a bit of info in the manual about it, but Bill does a better job describing the how-to part. I didn't realize it was there when I built my system, and ended up using an external decoder... (read the book!) Link to Vertex page: http://www.jammerdave.com/vertex.html Or via the Repeater-Builders web site.. 73 Very Merry Christmas! dave, NA6DF 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: Duplexer tuning with Return Loss Bridge
At 12/22/2005 08:15 AM, you wrote: Is there any reason that a relatively cheap MiniCircuits directional coupler wouldn't work for this? P/N Z30-16-5-75 is $29.95 P/N ZADC-10-4-75 is $54.95 etc. Those are 75 ohm units. Take a look at the ZFDC-10-2. I picked one up at Dayton for a few bucks. Typical directivity is better than 40 dB through 10-500 MHz. Only problem is this unit is small signal only (1.5 watts max.), so it normally would be used on a sweep generator, not a wattmeter. Bob NO6B Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] color tv antennas
Chris Huber wrote: Come on Guys! I just want to know how to get HDTV on my repeater. :-) Chris N6ICW A very VERY lossy CODEC. :-) Nate WY0X 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: color tv antennas
Umm.. maybe they would call it HD-SSTV?? 8-) df --- In Repeater-Builder@yahoogroups.com, Nate Duehr [EMAIL PROTECTED] wrote: Chris Huber wrote: Come on Guys! I just want to know how to get HDTV on my repeater. :-) Chris N6ICW A very VERY lossy CODEC. :-) Nate WY0X Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] New info added to the Vertex VXR-7000 page
Same with me, currently just try to find out why the AF MONI sound is more loud than the retransmit AF out. I tried to adjust VR4001 but it doesn't much help. And your comment give me some ideas. At schematic diagram and in service manual book, they mentioned about -20db AF attenuate by R4180 and R4211 before limiter op-amp. And my idea is to bypass or to change with VR so later I can adjust the AF attenuation If it is not solve the problem, I will try to look at electronic volume control Q4029. The IC is controlled by maxdev trough DAC. This IC fungtion is for control volume AF out before TX MIX op-amp. maybe change value C4162 and C4171 to 4.7uf will also help. reza --- [EMAIL PROTECTED] wrote: I just added some new info, courtesy of WA6BZBZSo my Vertex VXVXR000 repeater page. It is about using a different audio input pin on the controller connector. Good stuff! I will also add info on getting a PL decode indication from the RJRJack on back of the repeater. WA6BZBZS also discovered that. There is a bit of info in the manual about it, but Bill does a better job describing the how-to part. I didn't realize it was there when I built my system, and ended up using an external decoder... (read the book!) Link to Vertex page: hthttp/wajammerdaveom/vertex.hthtml Or via the Repeater-Builders web site.. 73 Very Merry Christmas! dadaveNA6DFDF Yahoo! Groups Links Repeater-Builder-ununsubscribeayahoogroupsom __ Yahoo! for Good - Make a difference this year. http://brand.yahoo.com/cybergivingweek2005/ 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] Duplexer tuning with MINIMUM tools
Can anybody can advise me for tunning duplexer with minimum tools? For example case: I have to change TX-RX frequensi in some place, where I only have SWR and some HT and volt meter? thanks reza __ Yahoo! for Good - Make a difference this year. http://brand.yahoo.com/cybergivingweek2005/ 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] Can you change Motorola R100 from DPL to PL?
I was curious as to if the units are hardwired in or is it some card that you can change. Thanks Dakota Summerhawk 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] Duplexer tuning with MINIMUM tools
On Thu, 22 Dec 2005, Reza PWW wrote: Can anybody can advise me for tunning duplexer with minimum tools? For example case: I have to change TX-RX frequensi in some place, where I only have SWR and some HT and volt meter? A case of beer, an SWR meter, and a radio. Tune for minimum SWR. The case of beer is to insure accuracy -- largely because there isn't much. You're tuning for minimum insertion loss at that point (technically return loss). Really, you should find a friend with an IFR, communications analyzer, or spectrum analyzer with a tracking generator. To properly do the job, you need a dummy load on the unused port. Impedance mismatches can also do a job on cavity performance. -- Kris Kirby, KE4AHR [EMAIL PROTECTED] BIG BROTHER IS WATCHING YOU! This message brought to you by the US Department of Homeland Security 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] Can you change Motorola R100 from DPL to PL?
Changing the PL deck is something that I personally haven't tried to do. According to the literature, you need to order the R100 from Motorola with the proper deck already installed. From looking at Page 5 of the Service Manual, it appears there is more to it than just swapping out the PL deck for the DPL one... (Motorola refers to it as a specialized kit.) Maybe someone else has performed a frontal lobotomy on an R100?? Mark - N9WYS -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Dakota Summerhawk Sent: Thursday, December 22, 2005 9:55 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Can you change Motorola R100 from DPL to PL? I was curious as to if the units are hardwired in or is it some card that you can change. Thanks Dakota Summerhawk 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] Can you change Motorola R100 from DPL to PL?
there is a number of chips and caps. but it can be done. less work to go from DPL to pl. or is it is dpl add a tone panel. - Original Message - From: Dakota Summerhawk [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: Thursday, December 22, 2005 10:54 PM Subject: [Repeater-Builder] Can you change Motorola R100 from DPL to PL? I was curious as to if the units are hardwired in or is it some card that you can change. Thanks Dakota Summerhawk 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] Duplexer tuning with MINIMUM tools
At 12/22/2005 20:00, you wrote: On Thu, 22 Dec 2005, Reza PWW wrote: Can anybody can advise me for tunning duplexer with minimum tools? For example case: I have to change TX-RX frequensi in some place, where I only have SWR and some HT and volt meter? A case of beer, an SWR meter, and a radio. Tune for minimum SWR. The case of beer is to insure accuracy -- largely because there isn't much. You're tuning for minimum insertion loss at that point (technically return loss). Really, you should find a friend with an IFR, communications analyzer, or spectrum analyzer with a tracking generator. To properly do the job, you need a dummy load on the unused port. Impedance mismatches can also do a job on cavity performance. Seriously, you can tune the duplexer passes with a TX wattmeter, but you MUST also use an isolator between the test TX duplexer so that the duplexer sees 50 ohms in that direction. Also don't forget the 50 ohm termination on the untested port of the duplexer. This only gets you the passes. For the notches there's probably no getting around needing some sort of well-shielded signal generator. If you try transmitting into the duplexer at the notch frequency at say 10 watts (+40 dBm) the duplexer notch depth is 80 dB, you'll get -40 dBm at the other end. -40 dBm is too much signal to measure on an amateur transceiver (the S-meters on my Yaesus max out around -90 dBm) yet not enough to drive a wattmeter. Then there's the (lack of) shielding issues of HT mobile radios. If you're really intent on obtaining duplexer tuning capability for cheap, invest in a old signal generator like the old dependable Singer FM-10 or Wavetek 2407 or 2410. Don't forget the isolator a good 10 dB pads for the sig. gen. and test receiver to make darn sure all I/O looks like 50 ohms. Such a setup won't let you see everything that's going on like a network analyzer or spectrum analyzer with tracking generator will (I've done it both ways; both are accurate but the analyzer method is much faster more fun!). Bob NO6B Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
