Re: [Repeater-Builder] Hamtronics
On Jul 13, 2007, at 6:25 AM, Ron Wright wrote: Eric and all, On the PA problem has anyone on the board tried using PAs from say Micors or GE Mastr line made for 150 or UHF on 220. Everything I've read about converting MASTR II PA's from VHF to 220 doesn't look too good. I have heard rumor that moving a MASTR III PA might be easier. No desire to hunt for one and try it, though. Most of the MASTR II 220 conversions I've seen on-air took a brick module 220 PA from RF Parts and fed that from the converted M2 exciter, for around 25-35W out. -- Nate Duehr [EMAIL PROTECTED]
[Repeater-Builder] Re: Thermoelectric Generator
You should have it now Tony... I'll copy the manuals and scan them into pdf for the RB and Sonic Web pages. a big thank you! skipp Tony Faiola [EMAIL PROTECTED] wrote: Hello Skipp: Please give me your name and address, and I'll send you the three ring binder for the generator. It will give you a good run down on the operation and installation. Drawings are included. You don't need to give me the six lottery numbers. Tony, K3WX skipp025 wrote: Hi Tony, I'd be very intersted in anything you have that you'd be willing to share. The units now available surplus here in California are the classic 3M-520 units and there's one left if anyone is interested. It's been a while but I installed a few Global units many years back but the customer has the paperwork for them and they're long gone from the scene. One Global unit I have here looks like a turbine... in a low cyclinder layout. I'm going to snap some pictures of these two different (3M Global) units and post them in the group photos section. Mike from the group was nice enough to contact me off the group and provide a contact for someone still using these units. Jim S. and I had a nice long chat about them as he and I have talked a few times in the past. The 3M units were rated for 10 years at full power and he'd had them in regular service for 20 plus years (at 2/3 power). So the reliability is there... the informal propane gals per year is just over 400 so a common 575 gal propane tank would work quite nicely to power a standard size com site with about 15 amps at 14.1 vdc. . Please email me off the group if you like... I'll make it worth your while to share the information... thanks skipp , Tony Faiola FAIOLA@ wrote: Hello Skipp: I think the manuals are still in my library for Global Thermoelectric, a Canadian company. If you are interested, let me know. Ciao, Tony, K3WX skipp025 wrote: Re: Thermoelectric Generator Anyone on the group every owned/used or played with a Thermoelectric Generator? Brands like 3M or the two known Canadian Compaines making TEG Units. Surplus units from CA State Surplus are being sold local (to me) minus any docs and/or info. The propane units are pretty easy to figure out but I've got one here with a bulk liquid fuel feeder hose requirement (like the kind you see used for 6 gal marine gas engines). Info to share? Lies to tell? Pictures? Possible Paperwork? Next six Lotto numbers? skipp skipp025 at yahoo.com
[Repeater-Builder] Re: 224 MHz PA fun and war stories
Same thing with the Micor 223/224 MHz conversions. We simply used bricks with trailing low pass filters. I'm checking to see what type of docs I have around for the pa sections. There's a really well done/built linked 223/224 linked system on the west coast called the Condor System. You might search the web for the conversion information related to that equipment. I based one of my last brick projects on that same circuit... the hard part is trying to find all the proper parts (caps rated for vhf with a decent D-factor) at decent prices. A few years back there were a modest amount of small size Milcom 220 Mhz hybrid pa's on ebay. Another source of 35 watts on 224 MHz if you can find them still. s. Nate Duehr [EMAIL PROTECTED] wrote: Everything I've read about converting MASTR II PA's from VHF to 220 doesn't look too good. I have heard rumor that moving a MASTR III PA might be easier. No desire to hunt for one and try it, though. Most of the MASTR II 220 conversions I've seen on-air took a brick module 220 PA from RF Parts and fed that from the converted M2 exciter, for around 25-35W out. Nate Duehr [EMAIL PROTECTED]
Re: [Repeater-Builder] Re: 224 MHz PA fun and war stories
The Condor conversions for the GEs are on the GE page at repeater-builder. Their web site is at http://www.condor-connection.org/ Mike WA6ILQ At 12:07 AM 07/14/07, you wrote: Same thing with the Micor 223/224 MHz conversions. We simply used bricks with trailing low pass filters. I'm checking to see what type of docs I have around for the pa sections. There's a really well done/built linked 223/224 linked system on the west coast called the Condor System. You might search the web for the conversion information related to that equipment. I based one of my last brick projects on that same circuit... the hard part is trying to find all the proper parts (caps rated for vhf with a decent D-factor) at decent prices. A few years back there were a modest amount of small size Milcom 220 Mhz hybrid pa's on ebay. Another source of 35 watts on 224 MHz if you can find them still. s. Nate Duehr [EMAIL PROTECTED] wrote: Everything I've read about converting MASTR II PA's from VHF to 220 doesn't look too good. I have heard rumor that moving a MASTR III PA might be easier. No desire to hunt for one and try it, though. Most of the MASTR II 220 conversions I've seen on-air took a brick module 220 PA from RF Parts and fed that from the converted M2 exciter, for around 25-35W out. Nate Duehr [EMAIL PROTECTED] Yahoo! Groups Links
[Repeater-Builder] Re: 440.6 receive
For sale or for trade. Due to a frequency change I have a KXN1024 channel element available. It was used in a 25 watt mobile Micor that was built up as a portable / backup repeater. The crystal in this element is cut for low side injection and when installed a mobile radio this element results in a receiver on 440.600 Mhz and a transmitter on 445.600MHz. See http://www.repeater-builder.com/rbtip/micoruhfmobile.html for more info. Switching from low side to high side requires some work, and is documented in the article referenced above. This element was done the right way - the element was originally on a 452Mhz channel, it was rebuilt and temp-comp'd by International Crystal. Mike WA6ILQ
Re: [Repeater-Builder] Re: 224 MHz PA fun and war stories
We built a PA for the high band VHF Micor using two Mitsubishi modules. We had some problems getting sufficient drive out of our exciter conversion and we wanted higher power, so we used two modules requiring 50 mW input for 35W out. Turned into a real challenge. Using an RF splitter to divide the input and a phased power combiner/bridge to sum the outputs, we manged to get a very stable and bullet proof PA that once transmitted all night due to a controller malfunction. The heavy duty heat sink and a fan allowed the brick on the key operation with no problems. You can find it on K7IOU's micor conversion page at http://home.comcast.net/~micorrepeater/220mhzpa.htm de WD7F John in Tucson 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:[EMAIL PROTECTED] mailto:[EMAIL PROTECTED] * 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] Mocom 10 info?
Yeah, that's why I asked him for the model number or chassis number... It didn't sell, even at 99 cents, so I may just e-mail him and see if he still wants to unload it for basically the cost of shipping. George - Original Message - From: JOHN MACKEY [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: Saturday, July 14, 2007 12:04 AM Subject: Re: [Repeater-Builder] Mocom 10 info? Thanks for posting that, George!! The ebay listing does not say what frequency range/band it is. I've never seen that radio, but the case looks like what they used for the Mocom 35. -- Original Message -- Received: Fri, 13 Jul 2007 10:23:43 PM CDT From: George Henry [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Mocom 10 info? It's already ended, but it was item number 290136403140... you should be able to pull it up that way. George
[Repeater-Builder] URL Duplication with http prefix
Mike and Nate, Almost every URL that is posted with http in front get duplicated, regardless of the and characters. To prevent that, simply delete the http-colon-slash-slash and begin the URL with www and enclose the entire URL in and characters. The http-colon-slash-slash is unnecessary and causes some email clients to return a duplicate. A Tiny URL is an easy way to avoid broken links due to word wrap. 73, Eric Lemmon WB6FLY -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Mike Morris WA6ILQ Sent: Friday, July 13, 2007 11:02 PM To: [EMAIL PROTECTED] Subject: Re: [GE Mastr II] Mastr II Prog. CG Board SNIP The word wrap broke the link above. Try http://www.repeater-builder.com/ge/mastr2/ts-64-mastr2-mod/ts-64-mastr2-mod .html http://www.repeater-builder.com/ge/mastr2/ts-64-mastr2-mod/ts-64-mastr2-mod .html Hint to all: Bracket any emailed links with and characters and properly written email clients will handle them properly. It's all part of RFC1738, which defines the syntax of a URL. Mike WA6ILQ
Re: [Repeater-Builder] Motorola Quantar and Quantro Repeater Questions.
Hi Eric, Thanks for the info and sorry for not giving you the necessary information you request. Upon further digging into the issue, I've discovered that the Quantro low power module is not compatible with the Quantar back plane edge card connector. Edge card pin outs are quite a bit different than the pin outs from the Qunatar PA edge cards. So, that's the problem! Now I need a UHF range 2 100 watt PA assy. to get this up and working. Anybody have one for sale??? After I get one of those, then I can continue with trying to get it going. Cheers AJ Eric Lemmon wrote: It is difficult to give you advice with such vague descriptions. Please provide the model and/or FRU numbers for each component in your station, including the chassis and power supply. It is possible that there is an incompatibility issue at work here. Since the Quantro/Quantar uses a digital SPI buss to link each component, the station control module (SCM) assumes that certain modules are connected before the power-up diagnostic routine will pass. In particular, certain power supplies will only work with certain PAs. I suspect that may be a factor in your case. 73, Eric Lemmon WB6FLY -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of ajbradio Sent: Thursday, July 12, 2007 12:54 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Motorola Quantar and Quantro Repeater Questions. Hi everyone. Don't post often but I ran into a slight problem and can't seem to find an answer and thought that I'd ask in the group of some of the Quantar technicians for some guidance. I have what I would call a partial Quantro which is pretty much complete minus the power supply and final amplifier section. I also have a Quantar chassis, the gold colored one, with a power supply. What I've done is taken all the components out of the Quantro chassis and placed them into the Quantar chassis. I changed out the firmware to a Quantar simm I had as well in the SCM. Now, when I power it up, I immediately get a power supply failure LED coming on. If I remove the Quantro PA unit, which looks to be more like a small low power driver and not your typical 100 watt PA assy., everything fires up and starts proving out but of course fails because now there is no PA. So, my question is should this PA assy., which I think is maybe 5 to 25 watts max as it has no real cooling fins, work in the Quantar chassis? Is the PA for the Quantro I have majorily different than a Quantar? Is it possible there is an incompatibility between a Quantar modules backplane board and that of a Quantro? Or, do I maybe just have a dead and shorted out low power PA module? The exciter shold be okay as I don't get a fault on it. This is a UHF low split and I'd like to see if I can get it working somehow. ANy help would be greatly appreciated. Thanks AJ Yahoo! Groups Links
[Repeater-Builder] Zetron
can any tell me the default program codes for the: Zetron model 38 and Zetron model 38A thank you, John
RE: [Repeater-Builder] Zetron
Hey John and the Group! You may want to do a little more reading of this groups bible. IMHOTry this link: http://www.repeater-builder.com/zetron/zetron-model-38A025-9043Y.pdf Might be a little easier than someone telling you the many codes... Enjoy! Charlie It is not the class of license the Amateur holds, but the class of the Amateur that holds the license. Charles Mumphrey Amateur Radio Station Kc5ozh Kc5ozh Rowlett Repeater: 441.325 MHz + 162.2 Kc5ozh Dallas Repeater: 441.950 MHz + 162.2 Kc5ozh Rowlett Repeater II: 441.950 MHz + 110.9 Rowlett R.A.C.E.S. Unit 823 http://www.CharliesElectronics.com http://www.hello-radio.org http://www.emergency-radio.org Original Message Subject: [Repeater-Builder] Zetron From: Maire-Radios [EMAIL PROTECTED] Date: Sat, July 14, 2007 1:59 pm To: Repeater-Builder@yahoogroups.com can any tell me the default program codes for the: Zetron model 38 and Zetron model 38A thank you, John
Re: [Repeater-Builder] Zetron
I thought the 38 and 38A were different codes?
John
- Original Message -
From: Charles Mumphrey Kc5ozh
To: Repeater-Builder@yahoogroups.com ; [EMAIL PROTECTED]
Sent: Saturday, July 14, 2007 3:10 PM
Subject: RE: [Repeater-Builder] Zetron
Hey John and the Group!
You may want to do a little more reading of this groups bible.
IMHOTry this link:
http://www.repeater-builder.com/zetron/zetron-model-38A025-9043Y.pdf
Might be a little easier than someone telling you the many codes...
Enjoy!
Charlie
It is not the class of license the Amateur holds, but the class of the
Amateur that holds the license.
Charles Mumphrey
Amateur Radio Station Kc5ozh
Kc5ozh Rowlett Repeater: 441.325 MHz + 162.2
Kc5ozh Dallas Repeater: 441.950 MHz + 162.2
Kc5ozh Rowlett Repeater II: 441.950 MHz + 110.9
Rowlett R.A.C.E.S. Unit 823
http://www.CharliesElectronics.com
http://www.hello-radio.org
http://www.emergency-radio.org
Original Message
Subject: [Repeater-Builder] Zetron
From: Maire-Radios [EMAIL PROTECTED]
Date: Sat, July 14, 2007 1:59 pm
To: Repeater-Builder@yahoogroups.com
can any tell me the default program codes for the:
Zetron model 38
and
Zetron model 38A
thank you, John
Re: [Repeater-Builder] Zetron
it looks like the same program code works for both. thanks John - Original Message - From: Maire-Radios To: Repeater-Builder@yahoogroups.com Sent: Saturday, July 14, 2007 3:20 PM Subject: Re: [Repeater-Builder] Zetron I thought the 38 and 38A were different codes? John - Original Message - From: Charles Mumphrey Kc5ozh To: Repeater-Builder@yahoogroups.com ; [EMAIL PROTECTED] Sent: Saturday, July 14, 2007 3:10 PM Subject: RE: [Repeater-Builder] Zetron Hey John and the Group! You may want to do a little more reading of this groups bible. IMHOTry this link: http://www.repeater-builder.com/zetron/zetron-model-38A025-9043Y.pdf Might be a little easier than someone telling you the many codes... Enjoy! Charlie It is not the class of license the Amateur holds, but the class of the Amateur that holds the license. Charles Mumphrey Amateur Radio Station Kc5ozh Kc5ozh Rowlett Repeater: 441.325 MHz + 162.2 Kc5ozh Dallas Repeater: 441.950 MHz + 162.2 Kc5ozh Rowlett Repeater II: 441.950 MHz + 110.9 Rowlett R.A.C.E.S. Unit 823 http://www.CharliesElectronics.com http://www.hello-radio.org http://www.emergency-radio.org Original Message Subject: [Repeater-Builder] Zetron From: Maire-Radios [EMAIL PROTECTED] Date: Sat, July 14, 2007 1:59 pm To: Repeater-Builder@yahoogroups.com can any tell me the default program codes for the: Zetron model 38 and Zetron model 38A thank you, John
Re: [Repeater-Builder] Zetron
John, there is a manual on line at the Repeater-Builder site, but your unit may be an earlier version of the EPROM than the one documented in that manual. The default decode sequence is 12345# if it is in the factory original state. I had several that were not, and found that I could remove the RAM chip from the Dallas Semiconductor battery back up for a few minutes and have the processor come back up in the defauld condition when it was replaced and could program from there. You have to put the processor back into the RS-232 access mode after this step, and you have to have a special cable (not standard RS-232) in order to program it via computer. The cable is documented in the manual and you will find that older units will operate a sub-set of the commands shown in the manual. 73 - Jim W5ZIT -Original Message- From: Maire-Radios [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: Sat, 14 Jul 2007 11:59 am Subject: [Repeater-Builder] Zetron can any tell me the default program codes for the: Zetron model 38 and Zetron model 38A thank you, John Check Out the new free AIM(R) Mail -- Unlimited storage and industry-leading spam and email virus protection. =0
Re: [Repeater-Builder] Zetron
any know the access code for the Zetron 39MAX thanks and it is not 12123 John - Original Message - From: [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: Saturday, July 14, 2007 4:42 PM Subject: Re: [Repeater-Builder] Zetron John, there is a manual on line at the Repeater-Builder site, but your unit may be an earlier version of the EPROM than the one documented in that manual. The default decode sequence is 12345# if it is in the factory original state. I had several that were not, and found that I could remove the RAM chip from the Dallas Semiconductor battery back up for a few minutes and have the processor come back up in the defauld condition when it was replaced and could program from there. You have to put the processor back into the RS-232 access mode after this step, and you have to have a special cable (not standard RS-232) in order to program it via computer. The cable is documented in the manual and you will find that older units will operate a sub-set of the commands shown in the manual. 73 - Jim W5ZIT -Original Message- From: Maire-Radios [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: Sat, 14 Jul 2007 11:59 am Subject: [Repeater-Builder] Zetron can any tell me the default program codes for the: Zetron model 38 and Zetron model 38A thank you, John __ Check Out the new free AIM(R) Mail -- Unlimited storage and industry-leading spam and email virus protection. =0
Re: [Repeater-Builder] Re: 224 MHz PA fun and war stories
On Jul 14, 2007, at 7:57 AM, WD7F - John in Tucson wrote: Turned into a real challenge. Using an RF splitter to divide the input and a phased power combiner/bridge to sum the outputs, we manged to get a very stable and bullet proof PA that once transmitted all night due to a controller malfunction. The heavy duty heat sink and a fan allowed the brick on the key operation with no problems. If a PA can't handle 48 hours of continuous key-down as-installed (fans if one must, etc.), it shouldn't be used on a repeater. You can find it on K7IOU's micor conversion page at http://home.comcast.net/~micorrepeater/220mhzpa.htm Thanks for sharing, John. It's on the must read pile! (GRIN) -- Nate Duehr, WY0X [EMAIL PROTECTED]
[Repeater-Builder] Re: [GE Mastr II] URL Duplication with http prefix
On Jul 14, 2007, at 9:23 AM, Eric Lemmon wrote: Mike and Nate, Almost every URL that is posted with http in front get duplicated, regardless of the and characters. Duplicated? Never seen that here, ever. That's a mail client problem, not the sender's problem, if the sender only typed it once. To prevent that, simply delete the http-colon-slash-slash and begin the URL with www and enclose the entire URL in and characters. The http-colon-slash-slash is unnecessary and causes some email clients to return a duplicate. It's NOT a URL without http:// -- see the URL specifications. Just because browsers allow it by defaulting to looking for http services by default, doesn't make it a URL. A Tiny URL is an easy way to avoid broken links due to word wrap. Tiny URL is a hack to fix problems with mail clients. I almost mentioned it in my last post -- figuring that someone would mention it. As mentioned before, folks can fix it with a few keystrokes in broken mail clients. Leaving it normal encourages (indirectly) movement away from broken badly-written mail clients that attempt to support clicking on URL's and do it improperly. I provide the URL to things, sometimes remembering the trick, and if folks can't deal with their broken mail clients, it's really not my problem... same thing with the guy with a radio that's over- deviating out of the pass-band of the repeater... repeater's working great by limiting the over-deviated signal. Must be a user problem. :-) We had a great debate that went on for weeks about this on one of my hardware engineering mailing lists... complete with lists of which mail clients were sane and which ones sucked. In the end, it didn't matter -- folks don't change mail clients once they get emotionally attached to one, it doesn't matter if it follows the RFC's properly or not. People will be people. That (mythical, but we've all heard 'em) guy with the over-deviated radio likes how it sounds on simplex, too... oh well. Sorry to go off-topic here, but there's an interesting side- conversation here that touches the very heart of engineering... fix the root-cause problem (mail clients that don't stick to the standards) or patch around it? I like the former, some like the latter... -- Nate Duehr, WY0X [EMAIL PROTECTED]
[Repeater-Builder] Re: Motorola R1225 versus Kenwood TKR-750
It's not so much a defect as it is asking the rptr to do more than it was designed for. It may be a 45 watt PA but in rptr use, medium to HD rptr use, drop it down to about 25 to 30 watts out of the PA. Enjoy what you get thru the duplexer. Asking for more will melt the PA. The earlier units had a temp controlled fan that only came on when the PA was about to melt. The next generation of power supplies came with a switch to turn the fan on permanently. You will probably be able to fix them without the manual. Most of the time the PA transistor collector got hot, melted the solder the chip caps moved (slid down the pcb due to gravity). I repaired these on a regular basis without needing new parts unless the damage literaly burnt the pcb around the collector lead. I removed the chip caps, removed the solder on the collector tab trace resoldered it all back in with silver solder. This, along with turning the factory output down, made them last a long time even under HD casino use. I think it took me maybe 45-60 mins to get it all apart, fix it, reassemble, reinstall. Lots of times I did it in place at the customer's premises. rtc -Original Message- From: Repeater-Builder@yahoogroups.com mailto:Repeater-Builder@yahoogroups.com Sent: Friday, July 13, 2007 11:08 AM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Re: Motorola R1225 versus Kenwood TKR-750 Hi Eric, SNIP I just pulled three 1225 uhf repeaters from two different locations and they all have the same failed tx pa problems. Wonder if there's a minor pa defect problem (like there was in early version one tkr repeaters) or it's just bad customer karma time. I've got to find a service manual before we open them up... cheers, skipp
