[Repeater-Builder] cor location in an ic-2200h
Hi, I am building a portable repeater for our ARES Club. I have 2 Icom IC-2200H 2 mtr units, a ces rm-10 controller. I am new at this building, and cannot decipher the info given by the controller instructions. It advises to use the radio cor connection and here is where I'm stumped. It also wants a connection at the output of the discriminater circuit. I have been a tech over 35 years, this issue is causing my teeth to fall out, I already lost most of my hair. I would really appreciate any help you might have. 73==Dan w2rdt BTW: I know these are not the best units to work with. Financially right now, it is all we could afford.
Re: [Repeater-Builder] cor location in an ic-2200h
Hi Paul, thank you very much. We are in our infancy and I had acess to these new units. The repeater will be used only for emergencies or sites needing communications. I have a much better idea where to go for the cor and discriminater now. I built a to go set up which has locks and I installed 2 fans just inches from the radios. I really appreciate the help. 73 russell w2rdt I look to the future because, that is where I will spend the rest of my life. From: Paul Plack pl...@xmission.com To: Repeater-Builder@yahoogroups.com Sent: Tue, March 16, 2010 3:42:03 AM Subject: Re: [Repeater-Builder] cor location in an ic-2200h Russ, you may have to spend more on whatever you're using for power than you're saving with those radios, as they pull 1.6 amps combined even on standby receive. Also, develop a plan to keep the transmit radio's heatsink cooled, even in low power mode. But plunging ahead... Your controller can work with either COS (carrier-operated switch) or derive that signal itself. If you can find COS in the Icom radio, you don't need discriminator audio, and can couple audio from anyplace handy, including the external speaker jack if it won't be accessible to passersby. You will need to lift one side of a capacitor on the controller board to use de-emphasized, non-discriminator audio. On the other hand, if you can provide the controller discriminator audio, you don't need COS - the controller will make its own. The CES docs actually seem to favor this approach. The 2200 doesn't provide the needed signals on its accessory connector, but there are leftover pins there you could use to get disciminator audio and COS out of the radio cleanly. Get the owners and service manuals, available through online search. 73, Paul, AE4KR - Original Message - From: Russell To: Repeater-Builder@ yahoogroups. com Sent: Monday, March 15, 2010 11:33 PM Subject: [Repeater-Builder] cor location in an ic-2200h Hi, I am building a portable repeater for our ARES Club. I have 2 Icom IC-2200H 2 mtr units, a ces rm-10 controller. I am new at this building, and cannot decipher the info given by the controller instructions. It advises to use the radio cor connection and here is where I'm stumped. It also wants a connection at the output of the discriminater circuit. I have been a tech over 35 years, this issue is causing my teeth to fall out, I already lost most of my hair. I would really appreciate any help you might have. 73==Dan w2rdt BTW: I know these are not the best units to work with. Financially right now, it is all we could afford.
Re: [Repeater-Builder] cor location in an ic-2200h
The controller is a CES RM-10 I look to the future because, that is where I will spend the rest of my life. From: Nate Duehr n...@natetech.com To: Repeater-Builder@yahoogroups.com Sent: Tue, March 16, 2010 3:20:48 AM Subject: Re: [Repeater-Builder] cor location in an ic-2200h On Mar 15, 2010, at 11:33 PM, Russell wrote: Hi, I am building a portable repeater for our ARES Club. I have 2 Icom IC-2200H 2 mtr units, a ces rm-10 controller. I am new at this building, and cannot decipher the info given by the controller instructions. It will help if you'll tell us which controller it is. It advises to use the radio cor connection and here is where I'm stumped. A COR is any logic signal inside the radio that triggers when either the squelch is open, or probably better, whenever CTCSS is detected (if you're requiring CTCSS on your repeater). Some controllers take inputs for both as separate signals and let you then turn on/off the requirement for CTCSS in the controller by choosing which logic input to trigger off of, or my preference, logically AND'ing the signals together, meaning both COR/COS and CTCSS must be active from the repeater's receiver before the repeater will repeat. This signal, as in on most Amateur grade gear, is NOT available on any of the connectors of the IC-2200H, per the manual at http://www.icomamerica.com -- pages 1-5. The only way you'll find it is with a logic probe, oscilloscope, or similar and knowledge of the radio's schematic and internal layout, and you'll have to bring it out from inside the rig. There are MUCH easier options for this, including... - Use of the commercial Icom rigs. They have appropriate programming software and connectors for interfacing them to external hardware. - Maybe consider talking to the sponsors of this mailing list... Repeater-Builder The Company (TM? GRIN...) -- they make much higher quality repeaters out of older commercial gear than can be easily cobbled together from a couple of Amateur-grade mobiles. They can also discuss duplexer options, see below for more on that. It also wants a connection at the output of the discriminater circuit. A Discriminator circuit can be found in any FM/PM radio, it's the audio prior to being de-emphasized directly off of the circuit that detects it from the RF input. Most controllers will also work with regular audio from a speaker or better, some place in the radio that gives a constant audio level. (If you use the speaker circuit, someone might walk up and turn down the volume control and mess up your carefully set levels that provide correct deviation on your repeater transmitter that matches the deviation of the FM signal being received.) Again, need to know which controller you chose for your engineering project, and why... I have been a tech over 35 years, this issue is causing my teeth to fall out, I already lost most of my hair. Ahh, don't go that far. It's just a repeater! (GRIN) I would really appreciate any help you might have. 73==Dan w2rdt BTW: I know these are not the best units to work with. Financially right now, it is all we could afford. My bigger concern is, Why 2 meters? -- getting a duplexer that can handle a standard ham radio 600 KHz RX/TX split small enough to be portable is a pain, unless you're going to run a VERY low power level. You might have to look into doing a very non-standard and much wider split. This is why most people building portable repeaters are doing it up at UHF where the standard split is 5 MHz... Also if you haven't been perusing the Antenna, Duplexer, and other areas of www.repeater- builder.com -- definitely check those out. This I want to build a portable repeater question comes up so often, I wonder if someone has time to turn it into an article for RB... -- Nate Duehr, WY0X n...@natetech. com
Re: [Repeater-Builder] cor location in an ic-2200h
Thanks Nate, we are using radios at hand. we are a new club and are ARES in this county. I am building this unit just for call outs. We are using 2 mtr mainly due to not much activity on 70 ctmrs. I have built some cu copper 2mtr loops, I cannot believe the performance these little loops give out. Everything about this portable repeater is an adventure, I have hand made just about everything in this system. The cabinet has locks to keep wondering minds, dual fans, and a set of 100 amp gel cell batteries thrown in for power. Will always be with my truck, so I have power there as well. Your input is greatly appreciated. I will be sure to send back a report on how this works, or if it does not work. 73 russell w2rdt I look to the future because, that is where I will spend the rest of my life. From: Nate Duehr n...@natetech.com To: Repeater-Builder@yahoogroups.com Sent: Tue, March 16, 2010 3:20:48 AM Subject: Re: [Repeater-Builder] cor location in an ic-2200h On Mar 15, 2010, at 11:33 PM, Russell wrote: Hi, I am building a portable repeater for our ARES Club. I have 2 Icom IC-2200H 2 mtr units, a ces rm-10 controller. I am new at this building, and cannot decipher the info given by the controller instructions. It will help if you'll tell us which controller it is. It advises to use the radio cor connection and here is where I'm stumped. A COR is any logic signal inside the radio that triggers when either the squelch is open, or probably better, whenever CTCSS is detected (if you're requiring CTCSS on your repeater). Some controllers take inputs for both as separate signals and let you then turn on/off the requirement for CTCSS in the controller by choosing which logic input to trigger off of, or my preference, logically AND'ing the signals together, meaning both COR/COS and CTCSS must be active from the repeater's receiver before the repeater will repeat. This signal, as in on most Amateur grade gear, is NOT available on any of the connectors of the IC-2200H, per the manual at http://www.icomamerica.com -- pages 1-5. The only way you'll find it is with a logic probe, oscilloscope, or similar and knowledge of the radio's schematic and internal layout, and you'll have to bring it out from inside the rig. There are MUCH easier options for this, including... - Use of the commercial Icom rigs. They have appropriate programming software and connectors for interfacing them to external hardware. - Maybe consider talking to the sponsors of this mailing list... Repeater-Builder The Company (TM? GRIN...) -- they make much higher quality repeaters out of older commercial gear than can be easily cobbled together from a couple of Amateur-grade mobiles. They can also discuss duplexer options, see below for more on that. It also wants a connection at the output of the discriminater circuit. A Discriminator circuit can be found in any FM/PM radio, it's the audio prior to being de-emphasized directly off of the circuit that detects it from the RF input. Most controllers will also work with regular audio from a speaker or better, some place in the radio that gives a constant audio level. (If you use the speaker circuit, someone might walk up and turn down the volume control and mess up your carefully set levels that provide correct deviation on your repeater transmitter that matches the deviation of the FM signal being received.) Again, need to know which controller you chose for your engineering project, and why... I have been a tech over 35 years, this issue is causing my teeth to fall out, I already lost most of my hair. Ahh, don't go that far. It's just a repeater! (GRIN) I would really appreciate any help you might have. 73==Dan w2rdt BTW: I know these are not the best units to work with. Financially right now, it is all we could afford. My bigger concern is, Why 2 meters? -- getting a duplexer that can handle a standard ham radio 600 KHz RX/TX split small enough to be portable is a pain, unless you're going to run a VERY low power level. You might have to look into doing a very non-standard and much wider split. This is why most people building portable repeaters are doing it up at UHF where the standard split is 5 MHz... Also if you haven't been perusing the Antenna, Duplexer, and other areas of www.repeater- builder.com -- definitely check those out. This I want to build a portable repeater question comes up so often, I wonder if someone has time to turn it into an article for RB... -- Nate Duehr, WY0X n...@natetech. com
Re: [Repeater-Builder] Computer noise in 2M Repeater
I didn't have any problem with the strobe noise until the internet gear
desensed my receiver. It is not being retransmitted. They are powering their
tower top equipment by sending the DC on the CAT5 Cable. Wouldn't such a long
run greatly attenuate the power available to the tower top equipment? The
installation is untidy. No attempt to cut the CAT5 wire to length. I can only
guess how much extra cable he has at the top. I am no longer able to climb
towers so I can't inspect the tower top installation. The strobe is new it was
installed last summer after the old one failed. Thanks for the help.
Jim WK5Y
- Original Message -
From: Jacob Suter
To: Repeater-Builder@yahoogroups.com
Sent: Monday, April 27, 2009 6:16 PM
Subject: RE: [Repeater-Builder] Computer noise in 2M Repeater
As a wireless installer with a little RF knowledge, I can tell you *nothing*
is a bigger piece of crap than anything Netgear sells. I'd also guess this
WISP also loses a lot of gear based on what you've mentioned so far. I'd have
to suggest to them the following:
ACisco makes nice switches on the cheap (most WISP POPs don't use more
than a 100mbit switch anyways, you can get a Cisco Catalyst 2924 for under $50
off ebay, and it's a much higher quality switch with a good power supply that
won't spew RF noise)
BShielded cat5/5e/6 bonded to Mot R56 standards. This will further
eliminate RF spew while greatly reducing lightning failures.
Personally, I'm a big fan of running DC over coax (I use super-cheap RG59,
bonded to R56 standards) and *FIBER* for the data. DC is easy to protect
(MOVs and poly-fuses are your friends), Ethernet is much harder. Fiber is
awesome, easy and cheap. Lightning doesn't affect it, which is a huge bonus.
Ethernet-Fiber transceivers can be had for pennies on the dollar these days,
especially if you only need 10 or 100mbit.
Their noise source may also be the power supply feeding the system. Assuming
they're not using a PoE-capable switch, they most likely have a 'power
injector' inline, connected to some sort of power supply. I've discovered most
cheap-o ('Mean Well' is a personal favorite) 'project' brick power supplies
have somewhat dirty output. The long Ethernet run either increase the noise or
work as a much better antenna. 0.1uF capacitors and ferrites in the correct
places can greatly reduce this (or using better quality power supplies).
Now. the strobe problem you're describing sounds like a potential horrible
electrical problem at the site. In my experience an FM rig shouldn't be
greatly affected by a strobe. It also shouldn't be causing a problem/reaction
with the WISP gear (it may be causing damage to it!) so I'd definitely find out
what is going is going on with the strobe.
Good luck!
Jacob Suter
From: Repeater-Builder@yahoogroups.com
[mailto:repeater-buil...@yahoogroups.com] On Behalf Of Jim Russell
Sent: Saturday, April 25, 2009 8:53 PM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] Computer noise in 2M Repeater
Thanks for the input from all of you. I went to the tower site this
afternoon to give another look at the problem. The noise has gotten worst.
Our receiver is greatly desensed. The only equipment on site is the site
owner's UHF repeater, our two meter repeater and the Internet equipment. The
site owners equipment doesn't seem to be affected. The strobe lamp puts a buzz
in our receiver each time it fires. I noticed one of the green lamps on the
Netgear switch get brighter when the strobe fires. I'm sure the Internet
equipment is affected by that. The two meter is our primary machine used in
our storm watch activities. I tried to contact the Internet company today with
no answer. Will try again Monday. Again thanks for the information.
Jim WK5Y
- Original Message -
From: Eric Lemmon
To: Repeater-Builder@yahoogroups.com
Sent: Saturday, April 25, 2009 9:15 AM
Subject: RE: [Repeater-Builder] Computer noise in 2M Repeater
Jim,
This situation happens all too often, and it usually occurs because cheap
equipment is used (plastic boxes to contain the amplifier, unshielded cable,
no ferrites, ineffective grounding. etc.) to keep the installation costs
down. This is a misguided approach, because repeated visits to fix a
leakage problem will always cost a lot more than a first-class system would
have cost. Sound familiar?
Another possible factor is that *some* wireless installers are primarily IT
(Information Technology) folks who have relatively little experience with
the RF environment at a repeater site. I have met a few of these clueless
guys, whose eye glaze over when I talk about an interfering carrier from a
CPU crystal or intermodulation. They're used to installing APs and bridges
in office buildings, and don't
Re: [Repeater-Builder] Computer noise in 2M Repeater
Thanks for the input from all of you. I went to the tower site this afternoon to give another look at the problem. The noise has gotten worst. Our receiver is greatly desensed. The only equipment on site is the site owner's UHF repeater, our two meter repeater and the Internet equipment. The site owners equipment doesn't seem to be affected. The strobe lamp puts a buzz in our receiver each time it fires. I noticed one of the green lamps on the Netgear switch get brighter when the strobe fires. I'm sure the Internet equipment is affected by that. The two meter is our primary machine used in our storm watch activities. I tried to contact the Internet company today with no answer. Will try again Monday. Again thanks for the information. Jim WK5Y - Original Message - From: Eric Lemmon To: Repeater-Builder@yahoogroups.com Sent: Saturday, April 25, 2009 9:15 AM Subject: RE: [Repeater-Builder] Computer noise in 2M Repeater Jim, This situation happens all too often, and it usually occurs because cheap equipment is used (plastic boxes to contain the amplifier, unshielded cable, no ferrites, ineffective grounding. etc.) to keep the installation costs down. This is a misguided approach, because repeated visits to fix a leakage problem will always cost a lot more than a first-class system would have cost. Sound familiar? Another possible factor is that *some* wireless installers are primarily IT (Information Technology) folks who have relatively little experience with the RF environment at a repeater site. I have met a few of these clueless guys, whose eye glaze over when I talk about an interfering carrier from a CPU crystal or intermodulation. They're used to installing APs and bridges in office buildings, and don't see anything different about tie-wrapping a more powerful box to a tower that supports many other services, except perhaps using some electrical tape and silicone goop to waterproof the connectors. Don't laugh- it happens! So, to answer your question, immediately contact the wireless system owner and advise him that his system is interfering with yours, and it must be fixed promptly. Don't quote the FCC rules quite yet. If the polite approach does not get results, contact the site owner. Above all, do not just sit and wring your hands. The wireless owner must comply with Part 15 rules, but he must be told if there is a problem. 73, Eric Lemmon WB6FLY -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of Jim Russell Sent: Friday, April 24, 2009 7:20 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Computer noise in 2M Repeater Does anyone have any suggestions on how to eliminate noise generated by a Wireless Internet System. The owner of the tower where our club has our 145.370 MHz repeater has rented space to a group who have mounted a wireless Internet relay on the tower. The system is simple, it consist of a Netgear switch, a Microwave dish and a smallYagi. There is approx. 300 feet of Cat 5 wire going up and 300 feet coming down the tower. Their antennas are mounted within a few feet of ours on the top of the 260 ft. tower. We unplugged the netgear switch and the noise cleared, we disconnected our antenna and the noise goes away. The noise rides on the repeater receiver squelch tail. We do use a PL tone or we wouldn't be able to use our repeater at all Jim WK5Y
[Repeater-Builder] Computer noise in 2M Repeater
Does anyone have any suggestions on how to eliminate noise generated by a Wireless Internet System. The owner of the tower where our club has our 145.370 MHz repeater has rented space to a group who have mounted a wireless Internet relay on the tower. The system is simple, it consist of a Netgear switch, a Microwave dish and a smallYagi. There is approx. 300 feet of Cat 5 wire going up and 300 feet coming down the tower. Their antennas are mounted within a few feet of ours on the top of the 260 ft. tower. We unplugged the netgear switch and the noise cleared, we disconnected our antenna and the noise goes away. The noise rides on the repeater receiver squelch tail. We do use a PL tone or we wouldn't be able to use our repeater at all Jim WK5Y
Re: [Repeater-Builder] Solder
Thanks to all who answered by question. Jim WK5Y - Original Message - From: DCFluX To: Repeater-Builder@yahoogroups.com Sent: Thursday, October 04, 2007 2:02 PM Subject: Re: [Repeater-Builder] Solder The whole purpose of alloying tin together with lead was because in the 1800s german pipe organs made from pure tin would deteriorate after about 2 years. This was called 'tin pest' which is more literally translated as 'tin plague'. Modern organ pipes use a 50/50 alloy of tin to lead which cures the phenomenon completely. The problem was traced to pure tin not liking any tempreture below 53 degreees F. Raw tin is found in the alpha state and when melted and processed into a useful form becomes beta. Because of the crystaline structure of tin is different in both states the molecules of the structure break them selfs appart when going below 53 F Reverting Beta tin back into Alpha tin, occasionally this can be heard as a tin cry. The process is just like when Aluminum wire deteriorates back into a ceramic powder. As for tin whiskers, no one, not even NASA understands why they grow. It is not magnetic fields or electirc fields, it just seems to happen. I feel it is most likely due to disimilar metal tempreture coeffieceints causeing tiny dimples of the plated metal to push molecuels of tin out. Kinda like puting a Mentos into Diet Coke. Current lead free solder is about 99% tin 0.6% copper and 0.4% other which is usually antimony and bismuth. Silver bearing solder is seen in 96% tin and 3.8% silver and 0.2% other. Lead free solder also tends to eat soldering iron tips faster for what ever reason. Thanks to RoHS and people forgeting what they already knew and the Wal-Mart throw it away instead of fixing it mentality in about 4 or 5 years we should see a rash of consumer electronics filling land fills when they fail due to whiskering or beta-alpha reversion. I'm sticking with good old fashioned non-RoHS complient 63/37 solder, just like your Dad used.
Re: [Repeater-Builder] Micor UHF PA
Thanks Guys Jim WK5Y - Original Message - From: Tom Parker To: Repeater-Builder@yahoogroups.com Sent: Monday, October 01, 2007 9:14 PM Subject: Re: [Repeater-Builder] Micor UHF PA Jeff you just gave away all the secrets... Good, concise job! Jeff DePolo wrote: The coupling cap between stages that is at the end of the semi-rigid coax can develop a bad connection as Tom said. Usually if it does, the pitting that occurs due to the arcing renders the cap's end plate too damaged to re-solder reliably, so replacing it is a good idea. The 25.5 pF caps across the collector-emitter can go bad. Usually this will manifest as somewhat-reduced output (depending on how many are bad), and/or power that jumps around. The little solder tabs that connect the RF ground on the substrates to DC ground along the top edge of the board will often develop bad connections and need to be re-flowed. When these open up you can have anything from low power out to spurs. The 0.01 uF DC decoupling caps that connect the output coax's shield to RF ground can go bad too, or develop a cold solder joint; usually these fail catastrophically so they're easy to spot. If you suspect a bad cap, sometimes you can locate the bad one by applying a little pressure with an insulated tuning tool while the transmitter is on. You might get lucky and catch it arcing as it makes and breaks the connection. Last but not least, a cracked ceramic substrate will cause all kinds of grief if the groundplane (underside of the substrate) breaks. A crack in the substrate itself isn't a problem, but if the copper cracks along with it, scrap it. --- Jeff -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Jim Russell Sent: Sunday, September 30, 2007 9:08 PM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Micor UHF PA Thanks Jim WK5Y - Original Message - From: Tom Parker mailto:[EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: Sunday, September 30, 2007 2:25 PM Subject: Re: [Repeater-Builder] Micor UHF PA Also check the 52 pf coupling capacitors between each amp stage. We see these go bad and intermitten from time to time. Still too cheap not to replace, but sometimes all they need is a little heat and solder reflow. thp Milt wrote: Jim, You might be thinking about the 33pf(? value) on the collector/emitter junction on the flat pack RF transistors. Or the leaching problem that is mentioned in the service manual. I always replaced the chip caps on the base/emitter and collector/emitter junctions when we had to replace a defective transistor. There were PK-xxx packages for replacing the lower level transistors that included the transistor, chip caps and solder. Milt N3LTQ - Original Message - From: Jim Russell mailto:[EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com mailto:Repeater-Builder@yahoogroups.com Sent: Friday, September 28, 2007 11:24 PM Subject: [Repeater-Builder] Micor UHF PA Ok guys help this old man out. I worked in a Motorola Shop back in the 80's. I seem to remember a problem with Micor UHF PA's where the solder connection on a perticular chip capacitor would go bad causing the power to drop to next to nothing. I think the solution was to resolder the cap with silver solder. Do any of you know of a better solution. I have one of the animals acting intermittant. Jim WK5Y No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.5.488 / Virus Database: 269.13.35/1039 - Release Date: 9/29/2007 9:46 PM Internal Virus Database is out-of-date. Checked by AVG Free Edition. Version: 7.5.487 / Virus Database: 269.13.27/1020 - Release Date: 9/20/2007 12:07 PM No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.5.488 / Virus Database: 269.13.37/1042 - Release Date: 10/1/2007 6:59 PM
Re: [Repeater-Builder] Micor UHF PA
Thanks Jim WK5Y - Original Message - From: Tom Parker To: Repeater-Builder@yahoogroups.com Sent: Sunday, September 30, 2007 2:25 PM Subject: Re: [Repeater-Builder] Micor UHF PA Also check the 52 pf coupling capacitors between each amp stage. We see these go bad and intermitten from time to time. Still too cheap not to replace, but sometimes all they need is a little heat and solder reflow. thp Milt wrote: Jim, You might be thinking about the 33pf(? value) on the collector/emitter junction on the flat pack RF transistors. Or the leaching problem that is mentioned in the service manual. I always replaced the chip caps on the base/emitter and collector/emitter junctions when we had to replace a defective transistor. There were PK-xxx packages for replacing the lower level transistors that included the transistor, chip caps and solder. Milt N3LTQ - Original Message - From: Jim Russell To: Repeater-Builder@yahoogroups.com Sent: Friday, September 28, 2007 11:24 PM Subject: [Repeater-Builder] Micor UHF PA Ok guys help this old man out. I worked in a Motorola Shop back in the 80's. I seem to remember a problem with Micor UHF PA's where the solder connection on a perticular chip capacitor would go bad causing the power to drop to next to nothing. I think the solution was to resolder the cap with silver solder. Do any of you know of a better solution. I have one of the animals acting intermittant. Jim WK5Y No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.5.488 / Virus Database: 269.13.35/1039 - Release Date: 9/29/2007 9:46 PM
[Repeater-Builder] Micor UHF PA
Ok guys help this old man out. I worked in a Motorola Shop back in the 80's. I seem to remember a problem with Micor UHF PA's where the solder connection on a perticular chip capacitor would go bad causing the power to drop to next to nothing. I think the solution was to resolder the cap with silver solder. Do any of you know of a better solution. I have one of the animals acting intermittant. Jim WK5Y
Re: [Repeater-Builder] Spectrum Communications
I wish I had seen this posting a few months ago. Our club ordered a UHF system from Spectrum, we are having great difficulty getting them to deliver as promised. Jim, WK5Y Pres/Trustee Pittsburg County ARC McAlester, OK - Original Message - From: [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: Tuesday, April 24, 2007 10:09 AM Subject: Re: [Repeater-Builder] Spectrum Communications In a message dated 4/24/2007 9:50:25 A.M. Central Daylight Time, [EMAIL PROTECTED] writes: Does anyone know about Spectrum Communications? Hi Joel, I read your post and the 1st thing that went thought my mind was, here we go again! That a side Users here have painted a poor picture about Spectrum. Spectrum has had major customer service issues over the past few years. For example, slow or no response, orders not being filled or lost in space, and repairs taking forever. I have a SCR1000 VHF here that has been semi retired. It had the best audio I think I ever heard, but it drifted and always seemed to need to be re-tweaked (problems with trimmers) I replaced it with a Micor and never looked back. I guess it wasn't bad for 70-80's technology, just not great. Good Luck Brian, WD9HSY -- See what's free at AOL.com.
Re: [Repeater-Builder] maxar 80 5 watt
Title: Re: [Repeater-Builder] maxar 80 5 watt any news yet randy ? Russ N3TIH - Original Message - From: Randy Elliott To: Repeater-Builder@yahoogroups.com Sent: Friday, April 09, 2004 10:39 AM Subject: Re: [Repeater-Builder] maxar 80 5 watt Hi RussI scanned the schematic and sent it to your PM but it came back undelivered. Give me a couple of days, it's good Friday up here so we are doing the family visiting thing.Randy From: "Russell Filling" [EMAIL PROTECTED]Reply-To: Repeater-Builder@yahoogroups.comDate: Thu, 8 Apr 2004 22:16:00 -0400To: Repeater-Builder@yahoogroups.comSubject: Re: [Repeater-Builder] maxar 80 5 watt Randy did you find that file yet ??RussN3TIH - Original Message - From: Randy Elliott mailto:[EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: Monday, April 05, 2004 5:05 PMSubject: Re: [Repeater-Builder] maxar 80 5 wattHi RussThese radio do not have a cos out but I have one that I have moded for our club's 440 repeater. I will send you the info but it won't be today just start my night shift. Will try to get it to you tomorrow. RandyRandy Elliott VE3JPUTechnical DirectorSouth Pickering Amateur Radio Club Inc.Box 53Pickering, Ontario, CanadaL1V 2R2From: "Russell Filling" [EMAIL PROTECTED] Reply-To: Repeater-Builder@yahoogroups.comDate: Mon, 5 Apr 2004 13:53:58 -0400To: Repeater-Builder@yahoogroups.com, [EMAIL PROTECTED]Subject: [Repeater-Builder] maxar 80 5 watt i plan on using a pair of maxar 80 5 watt uhf crystaled radios as a portable repeater , we have a phelps dodge flat pack 50 watt max duplexer and , a Workingman UVS 300 11.3 dbi antenna ,and an ICS- basic 9 controller , so what i need to know is what are the pin outs on the back of the maxars ,this is the info off the sticker onthe heat sink for the radio Fcc TX Data :cc4319fcc rx data rc0206serial: 475fnc0482model :d04tsa3000bk"maxar 80" motorola incit has 2 14 ga female pins for power , 13.8 vdcthen , 15 18 ga female pins ,ineed a basic pin assignment and hopefully the radio has a COS out .RussN3TIH 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] mailto:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service http://docs.yahoo.com/info/terms/ . 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] mailto:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service http://docs.yahoo.com/info/terms/ . 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] RC-1000 schematic
lee , i had to add an external dual relay totheptt circuit on the rc-1000 , the opencollector only switches about 20 ma , so what i did , was tap 5vt off the output of the voltage reg in the controller toa 5 volt reed relat that drives a 12 volt relay to key the tx strip , the dual relay can switch up to a 3 amp load Russ N3TIH - Original Message - From: Q [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: Saturday, April 10, 2004 12:42 PM Subject: [Repeater-Builder] RC-1000 schematic I'm trying to add a remote base to my RC-1000 but the controller won't send any PTT. Anyone have a schematic for this model? Thanks,73,Lee,N3APP 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] maxar 80 5 watt
Title: Re: [Repeater-Builder] maxar 80 5 watt Randy did you find that file yet ?? Russ N3TIH - Original Message - From: Randy Elliott To: Repeater-Builder@yahoogroups.com Sent: Monday, April 05, 2004 5:05 PM Subject: Re: [Repeater-Builder] maxar 80 5 watt Hi RussThese radio do not have a cos out but I have one that I have moded for our club's 440 repeater. I will send you the info but it won't be today just start my night shift. Will try to get it to you tomorrow. RandyRandy Elliott VE3JPUTechnical DirectorSouth Pickering Amateur Radio Club Inc.Box 53Pickering, Ontario, CanadaL1V 2R2From: "Russell Filling" [EMAIL PROTECTED] Reply-To: Repeater-Builder@yahoogroups.comDate: Mon, 5 Apr 2004 13:53:58 -0400To: Repeater-Builder@yahoogroups.com, [EMAIL PROTECTED]Subject: [Repeater-Builder] maxar 80 5 watt i plan on using a pair of maxar 80 5 watt uhf crystaled radios as a portable repeater , we have a phelps dodge flat pack 50 watt max duplexer and , a Workingman UVS 300 11.3 dbi antenna ,and an ICS- basic 9 controller , so what i need to know is what are the pin outs on the back of the maxars ,this is the info off the sticker onthe heat sink for the radio Fcc TX Data :cc4319fcc rx data rc0206serial: 475fnc0482model :d04tsa3000bk"maxar 80" motorola incit has 2 14 ga female pins for power , 13.8 vdcthen , 15 18 ga female pins ,ineed a basic pin assignment and hopefully the radio has a COS out .RussN3TIH 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] mailto:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service http://docs.yahoo.com/info/terms/ . 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] This is serious, yeah right!
my room mate says after reading that , he understands why now when he passes the comm tower on county park , and he see the collision lights he has to run out and buy new nike's ! LMGDAO ! , its dat though to see that some fanatics actually believe in this hoakie bs , but its good amusement for the amateur thats inot mind controll HI HI Russ N3TIH Bill N3RXS - Original Message - From: Paul Finch To: Repeater-Builder@yahoogroups.com Sent: Friday, April 09, 2004 12:06 PM Subject: [Repeater-Builder] This is serious, yeah right! Hello, Someone found this URL over on a Tower related message board, thought you guys may like to see this and what kind of nut cases are out there that are doing whatever they can to disrupt the tower industry. Check out the web address below. Paul http://www.tearingdownstrongholds.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 the Yahoo! Terms of Service.
Re: [Repeater-Builder] UHF Mitrek
corey why dont u call past me and call gregg in townada , wa3ggs , foster communications , hes the motorola man , anyhow good to see a local on the list also , talk to ya soon Russ N3TIH - Original Message - From: Corey Dean [EMAIL PROTECTED] To: [EMAIL PROTECTED] Cc: repeater-builder@yahoogroups.com Sent: Thursday, March 25, 2004 9:06 AM Subject: [Repeater-Builder] UHF Mitrek I have been meaning to ask this question for a few days and always seem to get caught up in something else. How far down in freq will the 450-470 mitrek go? Will it do a 434 TX and a 439 RX?. I don't have the model numbers with me right now to be able to post them. One is a 30 watt I believe and the other I have is the plus version and has a 50 watt PA. Not sure which one I am going to use. I will need to see how low in freq they can go. Corey N3FE 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: GE phoenix UHF
just out of curiosit , how do u program a crystal ? i have a crystaled GE phoenix , not one with a x2122 in it , i need to know the frequency mutliplier Russ N3TIH - Original Message - From: wavecomm1 [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: Tuesday, March 23, 2004 11:44 PM Subject: [Repeater-Builder] Re: GE phoenix UHF need the programmer? 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: GE phoenix UHF
lol what dont believe in the toothpaste deal and the week of rubbing ? LOL Russ N3TIH - Original Message - From: Rick - VA3RZS/Charlotte - VA3CMR [EMAIL PROTECTED] To: Russell Filling [EMAIL PROTECTED]; Repeater-Builder@yahoogroups.com Sent: Wednesday, March 24, 2004 8:43 AM Subject: Re: [Repeater-Builder] Re: GE phoenix UHF I can only tune a xtal up in freq with a small hammer and a grinder :) On 24 Mar 2004 at 7:42, Russell Filling wrote: just out of curiosit , how do u program a crystal ? i have a crystaled GE phoenix , not one with a x2122 in it , i need to know the frequency mutliplier Russ N3TIH - Original Message - From: wavecomm1 [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: Tuesday, March 23, 2004 11:44 PM Subject: [Repeater-Builder] Re: GE phoenix UHF need the programmer? Yahoo! Groups Links Yahoo! Groups Links Rick Szajkowski VA3 RZS Charlotte Darby VA3 CMR Node Owners of IRLP Node 2120 Lakefield Ont Canada 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] Motorola Maxar 80
can some one give me a quick tech referenceon the Maxar 80 uhf radios , what i need to know is PLL or XTAL , and Wattage ,and if they have hardwired mic's or a mic plug some where , i havent got the radios yet they are still in shipment , i just need to know the basics info on them , thanks Russ N3TIH 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] Voltage in an Mpro Ge deskmate
is it possible to actually read 1662 volts AC on a 600 volt digital meter by putting ground lead of meter on chassis , and the red one on pin 1 then pin 9 in the ET-60 TX strip , this doesnt seem possible to me bit i double checked my house current and it read 117 volts , as normal , can some one explain this to me ??? im trying to chase out the 600 voltsto see if i have a voltage problem or if the 8106 / 8156 / 8072 tubes are bad , and again stated the output is only about 2 watts and its a 60 watt tx , but lacks 58 watts lol Russ N3TIH 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] M pro Ge deskmate
ya i got it , it was dc and its throwing 742 voilts but i think i found the reason forno out put , dead but glowing 8156 and 8106 , the thing im worried about is that 8072 being bad , in finding that the cabinate was dropped 8 inches on a concrete deck , im pretty mad but i think the damage is done so im gonna retube it if i can find those 3 , net searches tell me im gonna spendbetween 85 -185 for a 8072 and 15 -18 for a 8156 , and 9 -11 for a 8106 tube , kinda heartbreaking considering its in operation at 2 watts right nowat l;east the transistors are good :) im trying to find the hpaainess in the whole deal , that ive put many man hrs in this from getting it getting crystals ,then the controller , then the antenna , then the feedline ,and then finally building the outboard keying circuit to get it all working , and now dead tubes , but hey its a commercial rig and at least 30 yrs old , so its off for a parts hunt now !! - Original Message - From: Q [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: Monday, March 15, 2004 9:08 PM Subject: Re: [Repeater-Builder] Voltage in an Mpro Ge deskmate Isn't it supposed to be on DC??? - Original Message - From: Ralph Mowery [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: Monday, March 15, 2004 9:53 PM Subject: Re: [Repeater-Builder] Voltage in an Mpro Ge deskmate is it possible to actually read 1662 volts AC on a 600 volt digital meter by putting ground lead of meter on chassis , and the red one on pin 1 then pin 9 in the ET-60 TX strip , this doesnt seem possible to me bit i double checked my house current and it read 117 volts , as normal , can some one explain this to me ??? im trying to chase out the 600 voltsto see if i have a voltage problem or if the 8106 / 8156 / 8072 tubes are bad , and again stated the output is only about 2 watts and its a 60 watt tx , but lacks 58 watts lol Russ N3TIH If the voltage is read while transmitting, it is RF getting into the meter. 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] MCC RC-1000V to Ge Mpro UHF
ok , ive spent the last 8 hrs now bouncing back and fourth between the pc here and this GD(*^# , RC-1000V , im about fed up with its tech support in flordia too , has anyone else messed with programming it through the radio , im convinced now the COS isnt tripping the controller , it says tie high 2-30 volts ,and tie low 0.0 - 0.5 volts , but holy hell , i just cant seem to get the micro computer in the controller to respond tothe dtmf , and it wount reset by grounding pin 7 now , so i have a $200 Cigar ash box ...and further more what is this Hex to Dec conversion table the manual keeps refering to , its not a starndard one cause 3C = 60 and if it goes by 10 sec intervals thats 10 min not 8 min and 8 min is 48 or 30 in hex , so where doed his hex chart fit in , im really getting lost and am almost tothe point to not recomend this product to anyone else Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] UHF GE MPro
Well i got good news and bad new s ,, #1 the good the crystals came today $60 for the pair , the controller came ups 3 days ago , MCC RC-1000V nice unit , no manualsshipped from the old club so i built the TX cable RCA to N male , and volia it works . :) now the bad 8156doesnt have the purple glow , checking tx powe a massive 3/4 watt output , peaked and tuned it today took 2 hrs by manual and DC volt meter , both digital and an old 1945 military analog meter , got a wopping 2 watts out off the exciter or atleast i think its exciter power , its a ET-60 tx strip that is single channel , no icoms ( thanks god im not ready for multi channel ) al lot of the tuning process said look for 20 volts i only found max of 19 , and the rest was look for 0.6 , some was 0.88 nd the rest were 0.35 - 0.49 volt , im beginning tothink bad caps and resistors , but on with that i removed the 8156 and found corroded silver , so some polish and pipe cleaner , done , still 2 watts , soo i beg of th , the great M pro techs , whats up where do i look next ! Russ N3TIH 444.450 canton pa , first 440 ! Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] UHF GE MPro
yea it was about4 yrs ago when it was turned off ,and we recrystaled it for the vey same freqs just relocates some 150 north from its old QTH - Original Message - From: Steve S. Bosshard (NU5D) [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: Saturday, March 13, 2004 9:40 PM Subject: RE: [Repeater-Builder] UHF GE MPro Was the station delivering rated output etc., before you started re-channeling? Ssb 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] UHF GE MPro
how dfo u test the output of a tube with out a aoc freq to drive the exciter ? now u have my attention !! - Original Message - From: Steve S. Bosshard (NU5D) [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: Saturday, March 13, 2004 10:07 PM Subject: RE: [Repeater-Builder] UHF GE MPro Did you test it before you recrystalled it? Ssb (Immediately before) 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] MCC RC-1000V
anyone have a pinout diagram for the Micro Computer Concepts RC-1000V ita cute 25 pin connector but if i had a jpg or hi rez gif to show me what pins are what , it would be appreciated Russ N3TIH 444.450 Canton PA 's First 440 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] MCC RC-1000V to Ge Mpro UHF
okim trying to hook the rc 1k up to the old GE crate .. the old controller box had a barrier strip with fork blades and scre term on it the rc 1k had a DB 25 , i followed the pinoutsper audio from rec , and audio to TX , ptt , and COS line , but what im having problems with is the blue and white wires for the ptt interlock disable off the repeater , , and when i turn the rc1k on the tx light on the tx disable module comes on but now ive lost all functionality of a repeater , and i dont hace a service mic to see if i can key the crate back up... how the hell does that intlerlock work , does it need to be grounded ? does it need the reg 12.6 v+ ? and im not even sure if i have the rightCOS line , the old club tech from the other club hasnt touched it in $ yrs and doesnt remember it at all , sooo anyone out ther could ya help me ??? im kinda lostconsideringthis is the first ever repeater of GE ive ever worked on and this is the first RC1K ive worked on , its a it different than the old cat 300's and motorola mocoms heheheh 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/
