[Repeater-Builder] Re: Need help ID ing transistor
--- In Repeater-Builder@yahoogroups.com, John Reid [EMAIL PROTECTED] wrote: Forgive me, I am still relatively new at this. I recently bought a controller for a good price, but now I need to figure it out. It arrived with a broken component, I believe it is a transistor but the numbers do not bring back anything with Google, could someone help me as far as what I need to buy to replace it it is similar to many numbers but no identical match. It is marked as such NT A46C a picture is here http://tinyurl.com/28z6tn Thanks in advance, and I hope you dont mind, but as I am learning I might ask a few questions every now and then. Try 2N a very popular NPN general purpose transistor. The NT is most likely a manufacturer designation.
[Repeater-Builder] Re: Motorola HPN-1004 A Power Suupply
I want to use the thing as a battery charger at a repeater site. The supply does not appear to have a current limiting circuit to limit the transformer temperature in cases where the battery can draw too much current due to a shorted cell or a stone dead situation. I want to provide that feature. I also want the output set at a 12V battery float voltage of 13.4 - 13.6 volts, and have the ability to adjust the output up to about 14.7 volts, the so-called absorption charge voltage. So tell me how to get a copy of your schematic. Anything you can tell me about unreliability would also be welcome, but I suspect the voltage regulator and/or lack of current limiting may be the root cause of the issues you mentioned. Lou Aiken [EMAIL PROTECTED] LaMer LLC N4SWR 27109 Palmetto Drive Orange Beach, AL 36561 USA Tel ++ 1 251 981 6786 Fax ++ 1 251 981 3054 cell ++ 1 251 979 4648
[Repeater-Builder] Re: In Need Of A Quantar Wild Card Board
OK, guess I'll have to find my book. It went among the missing about a month ago. Thanx! Brian KE6IYC
Re: [Repeater-Builder] 1 5/8 Andrew Heliax
John Reid wrote: We just installed our feedline and antenna for a new UHF repeater in Southeastern Indiana. We have approximately 180 feet of 1 5/8 Andrew Heliax left over. If anyone is interestd, we would sure like to recoup $360 of our expenses, I cant deliver or ship, but it is available for pick up. Let me know off list in interested. And I've got connectors for it, used but completely useful. They're in Lexington, Ky. $40 each plus shipping. Mike KA4MKG
[Repeater-Builder] RE:1 5/8 Heliax plus transmitter question
Due to the number of replies, I am sending this here . It is gone, thanks for the interest. We have what seems to be a real good site for an Amateur Repeater, 190 feet up the tower and 1 5/8 all the way to the antenna. So far it looks like we will have a first class station. For now we are using two GM300s, I hope to find a 100% duty cycle transmitter eventually, what do you guys think I should keep my eyes open for. It has to be fairly economical as we did spend a bit on everything else. Or, if we keep a nice fan on the GM300, will it be acceptable? I guess that only time will tell. Thanks again.
[Repeater-Builder] Re: RE:1 5/8 Heliax plus transmitter question
A GE mastr II base station makes a nice repeater, I have picked one up (LIKE NEW) for $250 with a 100 watt PA. these are GREAT repeaters for the Money!!! A kenwood TKR-850 make a nice small repeater, but more money!! I have bought them as cheap as $650 and as much as $1000.00 73, Allen / K6GOD --- In Repeater-Builder@yahoogroups.com, John reid [EMAIL PROTECTED] wrote: Due to the number of replies, I am sending this here . It is gone, thanks for the interest. We have what seems to be a real good site for an Amateur Repeater, 190 feet up the tower and 1 5/8 all the way to the antenna. So far it looks like we will have a first class station. For now we are using two GM300s, I hope to find a 100% duty cycle transmitter eventually, what do you guys think I should keep my eyes open for. It has to be fairly economical as we did spend a bit on everything else. Or, if we keep a nice fan on the GM300, will it be acceptable? I guess that only time will tell. Thanks again.
Re: [Repeater-Builder] RE:1 5/8 Heliax plus transmitter question
John - You should reduce the Power out to about half and keep the fan on the heatsink of the transmit radio. Search the archives, a lot on info on the GM300s there. Charles, KS3Z --- John reid [EMAIL PROTECTED] wrote: Due to the number of replies, I am sending this here . It is gone, thanks for the interest. We have what seems to be a real good site for an Amateur Repeater, 190 feet up the tower and 1 5/8 all the way to the antenna. So far it looks like we will have a first class station. For now we are using two GM300s, I hope to find a 100% duty cycle transmitter eventually, what do you guys think I should keep my eyes open for. It has to be fairly economical as we did spend a bit on everything else. Or, if we keep a nice fan on the GM300, will it be acceptable? I guess that only time will tell. Thanks again. Yahoo! Groups Links (Yahoo! ID required) mailto:[EMAIL PROTECTED] Yahoo! oneSearch: Finally, mobile search that gives answers, not web links. http://mobile.yahoo.com/mobileweb/onesearch?refer=1ONXIC
[Repeater-Builder] Re: Motorola HPN-1004 A Power Suupply
Your battery should never go stone dead or it will simply be trashed every time. You need to use/install a Low Voltage Disconnect. Depending on the supply... simple battery charger and backup connections can be done using a high current diode and a proper size resistor. Some supplies need to be modified so the voltage current don't back-feed through the regulator circuit. You could also use a current limited source to ensure the power supply remains within normal limits while the system is under normal full load. ... but the resistor - diode method is simple. Consider a marine/rv 2nd battery isolator if you can't work out the diode - resistor methode. You didn't say what type of batteries you plan to use. Lead Acid batteries will take a lot of abuse. Surplus commercial radio/telco site type chargers are all over ebay. Why not run off batteries and simply recharge the batteries from the standard comm site charger. Otherwise there is always the trusty high current relay method. It's not hard to get creative with something that works well. cheers, skipp Lou Aiken [EMAIL PROTECTED] wrote: I want to use the thing as a battery charger at a repeater site. The supply does not appear to have a current limiting circuit to limit the transformer temperature in cases where the battery can draw too much current due to a shorted cell or a stone dead situation. I want to provide that feature. I also want the output set at a 12V battery float voltage of 13.4 - 13.6 volts, and have the ability to adjust the output up to about 14.7 volts, the so-called absorption charge voltage. So tell me how to get a copy of your schematic. Anything you can tell me about unreliability would also be welcome, but I suspect the voltage regulator and/or lack of current limiting may be the root cause of the issues you mentioned. Lou Aiken [EMAIL PROTECTED] LaMer LLC N4SWR 27109 Palmetto Drive Orange Beach, AL 36561 USA Tel ++ 1 251 981 6786 Fax ++ 1 251 981 3054 cell ++ 1 251 979 4648
[Repeater-Builder] E.F. Johnson/Dataradio DL-3410 info needed.
Anyone have any info on alignment, etc. on a E.F. Johnson DL-3410 radio, Receiver or Transmitter? Got one of RX, two of TX, and am trying to decide on suitability for little g-job idea. Thanks, Chuk G. kb4mdz
[Repeater-Builder] RE: [Repeaters] VHF Repeater
Tom, The last TKR-750 repeater I worked on was about three years ago. Since then, there have been some changes in the design of the unit, and others may be able to describe those changes. Although I advised a local radio club to purchase the K2 version, which tunes 136-150 MHz, the buyer ordered the K version, which tunes 146-174 MHz. It was a moot point, because the club's coordinated frequency was a 147 MHz pair. If you are going to use a 145 MHz pair, this would be important. The front end bandpass filters of the repeater's receiver must be manually tuned before placing the repeater in service. You wouldn't know this if you didn't have a copy of the service manual, because the installation/operation manual that comes with the radio doesn't mention that fact. This is easy to do with a service monitor. The TKR-750 can put out 50 watts, but it is rated at 25 watts for continuous duty. The internal fan controller should be set to run the fan only when it gets hot, and not continuously. The fan will die sooner that you expect if run continuously, and it will pull a lot of gunk and dirt into the radio. An external power supply is required. The repeater has a very capable built-in controller, with all of the bells and whistles. However, if you are going to use an external controller, be certain to disable several dozen default features of the built-in controller, or it will interfere with the external controller. The KPG-66D programming software is not very user-friendly, and some of the important functions are hidden so well on obscure menus that you might never find them except by accident. On the plus side, I will say that all of the TKR-750 repeaters I have set up for Amateur Radio use are still on the air and free of any major problems. That's pretty good for a low-cost repeater. 73, Eric Lemmon WB6FLY -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Tom Wood Sent: Wednesday, September 12, 2007 4:42 AM To: [EMAIL PROTECTED] Subject: [Repeaters] VHF Repeater Hi all. I am looking for some information on the Kenwood TKR-750 repeater. Is there anyone who has experience with this unit? Right now I know nothing about it firsthand. I think it will run 50 watts into the duplexer and I assume it requires an external power supply. Our old GE MasterII was destroyed by fire yesterday...The building it was in burned to the ground! Any info would be appreciated. 73, Tom Wood, n4cid Dunn, NC __ Repeaters mailing list Home: http://mailman.qth.net/mailman/listinfo/repeaters Help: http://mailman.qth.net/faq.htm Post: mailto:[EMAIL PROTECTED]
[Repeater-Builder] 220 link radios
Hey guys, Any good radios to use for 220 linking? I know Alinco makes the DR235, but the PL decoder sucks on it. Anything from tait or anything else to suggest? I need a few of these. Thanks, Jed
RE: [Repeater-Builder] 220 link radios
Jed, I'm using some synthesized Hamtronics TX and RX modules in a 220 repeater, and they seem to be holding up well. If properly encased and shielded, those modules should perform well in link service. your ready-made options are few... 73, Eric Lemmon WB6FLY -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Jed Barton Sent: Wednesday, September 12, 2007 8:06 PM To: repeater-builder@yahoogroups.com Subject: [Repeater-Builder] 220 link radios Hey guys, Any good radios to use for 220 linking? I know Alinco makes the DR235, but the PL decoder sucks on it. Anything from tait or anything else to suggest? I need a few of these. Thanks, Jed
RE: [Repeater-Builder] 220 link radios
any ideas for ready made options? Thanks, Jed _ From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Eric Lemmon Sent: Wednesday, September 12, 2007 11:24 PM To: Repeater-Builder@yahoogroups.com Subject: RE: [Repeater-Builder] 220 link radios Jed, I'm using some synthesized Hamtronics TX and RX modules in a 220 repeater, and they seem to be holding up well. If properly encased and shielded, those modules should perform well in link service. your ready-made options are few... 73, Eric Lemmon WB6FLY -Original Message- From: Repeater-Builder@ mailto:Repeater-Builder%40yahoogroups.com yahoogroups.com [mailto:Repeater-Builder@ mailto:Repeater-Builder%40yahoogroups.com yahoogroups.com] On Behalf Of Jed Barton Sent: Wednesday, September 12, 2007 8:06 PM To: repeater-builder@ mailto:repeater-builder%40yahoogroups.com yahoogroups.com Subject: [Repeater-Builder] 220 link radios Hey guys, Any good radios to use for 220 linking? I know Alinco makes the DR235, but the PL decoder sucks on it. Anything from tait or anything else to suggest? I need a few of these. Thanks, Jed
RE: [Repeater-Builder] 220 link radios
Jed , I picked up a Midland 13-508 Old Xtal 220 Mobile, also Made is a Cobra 200 and Clegg Models all the Same, Not sure who made for who, I think they were the First radios around yrs back when people started putting Repeaters together , The Xmit Board and Rec Board can be easily separated , I think they would make a Nice link Radio . But Erics info with the Hamtronics would be more up to Date , or the Best thing to do is Just E-Mail Scott Zimmerman - Kevin Custer who run this Wonderful site and have them professional build You one. http://www.repeater-builder.com/custombuilt/index.html Happy Repeater Building Don KA9QJG
