[Repeater-Builder] Astron RS-35M pass transistor Socket
My Astron RS-35M Power Supply has developed a problem with one of the sockets used for the TO-3 Pass Transistors. The Astron supplied socket does not look like it is very good quality. Does anyone know of a better replacemnt socket that I could use? If so please provide part number and where to order if possible. Thank You, Vince WB2FYZ
Re: [Repeater-Builder] Astron RS-35M pass transistor Socket
Hi Vince, cannot help you with the socket - maybe Newark or Mouser, or such. I have seen folks actually solder to the leads on the pass transistor if all else fails. 73, Steve NU5D Vince Staffo wrote: My Astron RS-35M Power Supply has developed a problem with one of the sockets used for the TO-3 Pass Transistors. The Astron supplied socket does not look like it is very good quality. Does anyone know of a better replacemnt socket that I could use? If so please provide part number and where to order if possible. Thank You, Vince WB2FYZ begin:vcard fn:Steve Bosshard n:Bosshard;Steve org:Bosshard Radio Service adr:;;503 B. South 25th. Street;Temple;Texas;76504;USA email;internet:[EMAIL PROTECTED] tel;work:254-773-1102 tel;fax:254-773-1174 tel;home:254-770-0111 tel;cell:254-624-4230 url:http://www.bosshardradio.com version:2.1 end:vcard
[Repeater-Builder] Unknown board
Hi all, I posted 4 pics in the photo section of a board I got in a lot of radio equipment that I purchased. I have no idea what it is or what its used for. All I know is the 2 connectors on the left, the top says TX and the bottom says RX, and the 3 pots on the right say Hi, Lo and VCO. I got 2 of them exactly alike, any help would be appreciated. If you have any more questions or want more pics let me know. Thanks.
[Repeater-Builder] ARRL/TAPR Digital Communications Conference in Chicago Dates Announced
Dates for ARRL/TAPR Digital Communications Conference in Chicago Announced (Feb 4, 2008) -- The Tucson Amateur Packet Radio Corporation (TAPR) has announced that the 2008 ARRL/TAPR Digital Communications Conference will take place September 26-28 at the Holiday Inn Hotel in Elk Grove Village, Illinois, a suburb of Chicago, near O'Hare airport. The conference is an international forum for radio amateurs to meet, publish their work and present new ideas and techniques. Presenters and attendees will have the opportunity to exchange ideas and learn about recent hardware and software advances, theories, experimental results and practical applications. Forums will feature the latest developments in Amateur Radio digital communications, as well as demonstrations of emerging digital technology. More information is available on the ARRL/TAPR DCC Web site, http://www.tapr.org/dcc.html Looking for last minute shopping deals? Find them fast with Yahoo! Search. http://tools.search.yahoo.com/newsearch/category.php?category=shopping
[Repeater-Builder] Community Repeater War Stories (the saga continues)
A community repeater is simply a shared repeater, When the radio traffic is very sporadic, none of the users are aware of the other's existence. In an ideal world... in the real world everyone knows who the other co-channel users are. It works fine until the number of users is increased to the point where collisions occur. That would be a number greater than 1. Most community repeater operators use a radio feature called Busy Channel Blocking which prevents other users from transmitting on top of a user who is using the channel. Should be a type of feature or function programmed into both the radio and some of the better repeater tone panels. Normally never turned on at the user-radio end unless the radio shop is really paying attention at the time of (the radio) programming. Of course, the FCC requires users to first ascertain that the channel is free before making a call, ... or simply jamming the other user right off the frequency with a high powered radio. and that is why most commercial radios go into carrier squelch mode when the mike is removed from its hangup clip. Until the user wraps a bit of wire or paper clip around the mic grounding hang-up post/pin/connection. Unfortunately, some community repeater users seem to think that their subscription entitles them to immediate and eternal use of the radio channel, and they become annoyed when the radio won't let them transmit. Annoyed = have a brain anyurism or throw (at speeds greater than 50mph) the mic against the wall. It is for this reason that simple trunked systems with as few as three radio channels have largely replaced community repeaters. Even using the LTR Trunking format with a single repeater is a much desired operation. However, community repeaters still have a place in the scheme of things, when the users have very infrequent and low-key traffic. And for older legacy radio equipment without the capacity to operate with the trunking system format. Trunking radios cost a slight bit more money per radio versus some of the really low cost units we see flooding the market. Trunking works well and solves a number of long time pesky problems. There are a number of trunking radio data formats available but the most popular consumer public use format is the LTR Trunking format. cheers, s.
[Repeater-Builder] Complete remote base stuff for sale.
Hi eveyone, I am making some changes on the UHF system we have here in KC. And in those chages, I have a complete Doug Hall RBI-1 remote interface and Kenwood TM701a (2m/440) and TM-321A (220) radios to go with it, for sale. These were hooked in to an Scom 7k. If anyone is interested, email me at: [EMAIL PROTECTED] Chuck K0XM
Re: [Repeater-Builder] Unknown board
Seems like the chips are switched capacitance audio filters - similar used in packet tone encoder / decoder. Don't have a clue. Steve jeffcarlyle wrote: Hi all, I posted 4 pics in the photo section of a board I got in a lot
Re: [Repeater-Builder] Unknown board
The XR2206 and 2211 chips are modulator/demodulator chips... I used them to build a RTTY TU for my Radio Shack Color Computer back in '83 or so. My guess would be some sort of modem. George, KA3HSW -Original Message- From: Steve S. Bosshard (NU5D) [EMAIL PROTECTED] Sent: Feb 5, 2008 11:12 AM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Unknown board Seems like the chips are switched capacitance audio filters - similar used in packet tone encoder / decoder. Don't have a clue. Steve jeffcarlyle wrote: Hi all, I posted 4 pics in the photo section of a board I got in a lot
Re: [Repeater-Builder] Astron RS-35M pass transistor Socket
The most reliable solution is to just break those flimsy socket pins off and solder the wires directly to the transistor leads. I've had several supplies fail because of these type sockets. I suspect the transistor may have failed because of the heat produced by the small contact area of the socket pins. Never had a transistor failure after soldering. Dex Vince Staffo wrote: My Astron RS-35M Power Supply has developed a problem with one of the sockets used for the TO-3 Pass Transistors. The Astron supplied socket does not look like it is very good quality. Does anyone know of a better replacemnt socket that I could use? If so please provide part number and where to order if possible. Thank You, Vince WB2FYZ
Re: [Repeater-Builder] Complete remote base stuff for sale.
What are you asking for the equipment? David N9CZV Hi eveyone, I am making some changes on the UHF system we have here in KC. And in those chages, I have a complete Doug Hall RBI-1 remote interface and Kenwood TM701a (2m/440) and TM-321A (220) radios to go with it, for sale. These were hooked in to an Scom 7k. If anyone is interested, email me at: [EMAIL PROTECTED] Chuck K0XM
Re: [Repeater-Builder] Re: Low-band MaraTrac Squelch Pots
After soldering a wire from point-A to point-B, I thought I fixed the problem, but it persisted. I scoped all the signals on J21 and found that the one on pin 8 was going away. The connection from the audio board, at the back of the pin-side of the connector, to the logic board, and even the interconnect board, was going open when the squelch failed. No detected audio, no squelch operation. The socket at pin 8 of J21 seems to be defective. It's not gripping the pin coming in from the audio board. I can put a resistor lead into any of the other holes and feel the contact gripping the lead, but on pin 8 it just wobbles around. I could replace the connector IF I had a part number and IF Motorola still had one. It's an 18-pin female dual row, right-angle, 0.100 inch type. I didn't find one on Mouser, but did find a 2mm connector of the right style. The alternative is to solder a wire from the interconnect board directly to the pin 8 of J21 on the audio board. This would bypass the connector and insure it never fails again, but removing the board would require unsoldering the wire. I didn't expect this kind of failure. I have a feeling it was a defective part installed at the factory, and if the radio never had the need for carrier squelch, no one ever cared about it. Also, the connection would be good once in a while, so it might have worked when it left the factory and just decided to fail later in life. Bob M. == --- Bob M. [EMAIL PROTECTED] wrote: Problem temporarily solved. While tracing the signals around U1103, I found no Detected Audio coming into pin 8 of J21, however when I pushed on the pin just a bit, the radio would then squelch up and the pot worked like it should, along with the one on the audio board which was also dead. I pulled the audio board but didn't find anything wrong. I resoldered pin 8 and put it back and it worked fine, until I started bending the interconnect board near J21 in the front of the radio. Now it's intermittent, so it looks like I'll have to pull that board and find the fractured foil. Doesn't look like an easy board to pull either, since it's buried behind the front panel of the chassis and has the big control connector on it. Bob M. === --- Milt [EMAIL PROTECTED] wrote: Bob, The info you need is contained in FMR-1735A-1 dated June 1996 The Audio squelch board in the radio is replaced with HLN5342ESP01 From Pin 9 on the front connector (the former busy light line) on the interconnect board, the signal feeds through JU1510 to pin 12 of J21 the audio board connector. JU1509 and 1511 are open, JU1512 is in. J21 pin 12 is the pin 2 input of U1103. JU1202 is out. IIRC busy light is not used on A7 heads with the remote squelch control option. It's possible that you have a missmatch between the head and audio squelch board. Milt N3LTQ - Original Message - From: Bob M. [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: Monday, February 04, 2008 6:26 AM Subject: Re: [Repeater-Builder] Re: Low-band MaraTrac Squelch Pots Thanks to the people who posted the link. I had seen that page earlier but didn't follow the signal off the board. The pot in the control head seems to have its arm and one end connected to ground. The other end goes through some resistors before leaving the control head. I can see the effect of turning the pot down at pin 9 of the control cable; it varies from about 3-5 kOhms. I thought it was just a DC signal or just a varying resistance to ground. The schematic posted doesn't show the wiring from the audio board out to the pot on the control head. I'm guessing that the signal coming into the squelch pot on the audio board is detected audio, since it then feeds the internal squelch pot which sets the gain and threshold of the squelch circuit. I'll have to rethink and evaluate this new information. Bob M. == --- sgreact47 [EMAIL PROTECTED] wrote: Bob, Look here for the modified audio board. http://www.batlabs.com/images/marsqsch.jpg The squelch control circuit is there, uses the Micor, MSF, high speed squelch. Bob M. [EMAIL PROTECTED] wrote: I'm working on a 42-50 MHz MaraTrac with the A7 advanced head that has a squelch pot on it. The squelch is open all the time, and neither the control head pot or the pot inside the radio will close the squelch. Looking for last minute shopping deals? Find them fast with Yahoo! Search. http://tools.search.yahoo.com/newsearch/category.php?category=shopping
Re: [Repeater-Builder] Re: Low-band MaraTrac Squelch Pots
Bob My manual shows 09-80103m05 is the part number for the female connector mounted on the interconnect board. Ralph KA4DKJ - Original Message - From: Bob M.mailto:[EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.commailto:Repeater-Builder@yahoogroups.com Sent: Tuesday, February 05, 2008 5:04 PM Subject: Re: [Repeater-Builder] Re: Low-band MaraTrac Squelch Pots After soldering a wire from point-A to point-B, I thought I fixed the problem, but it persisted. I scoped all the signals on J21 and found that the one on pin 8 was going away. The connection from the audio board, at the back of the pin-side of the connector, to the logic board, and even the interconnect board, was going open when the squelch failed. No detected audio, no squelch operation. The socket at pin 8 of J21 seems to be defective. It's not gripping the pin coming in from the audio board. I can put a resistor lead into any of the other holes and feel the contact gripping the lead, but on pin 8 it just wobbles around. I could replace the connector IF I had a part number and IF Motorola still had one. It's an 18-pin female dual row, right-angle, 0.100 inch type. I didn't find one on Mouser, but did find a 2mm connector of the right style. The alternative is to solder a wire from the interconnect board directly to the pin 8 of J21 on the audio board. This would bypass the connector and insure it never fails again, but removing the board would require unsoldering the wire. I didn't expect this kind of failure. I have a feeling it was a defective part installed at the factory, and if the radio never had the need for carrier squelch, no one ever cared about it. Also, the connection would be good once in a while, so it might have worked when it left the factory and just decided to fail later in life. Bob M. == --- Bob M. [EMAIL PROTECTED]mailto:msf5kguru%40yahoo.com wrote: Problem temporarily solved. While tracing the signals around U1103, I found no Detected Audio coming into pin 8 of J21, however when I pushed on the pin just a bit, the radio would then squelch up and the pot worked like it should, along with the one on the audio board which was also dead. I pulled the audio board but didn't find anything wrong. I resoldered pin 8 and put it back and it worked fine, until I started bending the interconnect board near J21 in the front of the radio. Now it's intermittent, so it looks like I'll have to pull that board and find the fractured foil. Doesn't look like an easy board to pull either, since it's buried behind the front panel of the chassis and has the big control connector on it. Bob M. === --- Milt [EMAIL PROTECTED]mailto:mengle%40pa.net wrote: Bob, The info you need is contained in FMR-1735A-1 dated June 1996 The Audio squelch board in the radio is replaced with HLN5342ESP01 From Pin 9 on the front connector (the former busy light line) on the interconnect board, the signal feeds through JU1510 to pin 12 of J21 the audio board connector. JU1509 and 1511 are open, JU1512 is in. J21 pin 12 is the pin 2 input of U1103. JU1202 is out. IIRC busy light is not used on A7 heads with the remote squelch control option. It's possible that you have a missmatch between the head and audio squelch board. Milt N3LTQ - Original Message - From: Bob M. [EMAIL PROTECTED]mailto:msf5kguru%40yahoo.com To: Repeater-Builder@yahoogroups.commailto:Repeater-Builder%40yahoogroups.com Sent: Monday, February 04, 2008 6:26 AM Subject: Re: [Repeater-Builder] Re: Low-band MaraTrac Squelch Pots Thanks to the people who posted the link. I had seen that page earlier but didn't follow the signal off the board. The pot in the control head seems to have its arm and one end connected to ground. The other end goes through some resistors before leaving the control head. I can see the effect of turning the pot down at pin 9 of the control cable; it varies from about 3-5 kOhms. I thought it was just a DC signal or just a varying resistance to ground. The schematic posted doesn't show the wiring from the audio board out to the pot on the control head. I'm guessing that the signal coming into the squelch pot on the audio board is detected audio, since it then feeds the internal squelch pot which sets the gain and threshold of the squelch circuit. I'll have to rethink and evaluate this new information. Bob M. == --- sgreact47 [EMAIL PROTECTED]mailto:echocomms%40hotmail.com wrote: Bob, Look here for the modified audio
Re: [Repeater-Builder] Complete remote base stuff for sale.
Please note: message attached I would be interested in knowing what you get for these. have a RBI-1 and 701 that I'm going to sell... ebay , I guess. Looking for a starting price. also am going to sell my RLC-3 with 5 radio cards...moved and took the repeater apart. 73, Dick W8RLL _ Credit card rates to high? Click here to find home equity line of credit options. http://thirdpartyoffers.juno.com/TGL2121/fc/Ioyw6i3m3ub8bVdigbiIjBxHZSHN6iTlwpSCs8VBHP2wX4g9Nwfa6c/ ---BeginMessage--- Hi eveyone, I am making some changes on the UHF system we have here in KC. And in those chages, I have a complete Doug Hall RBI-1 remote interface and Kenwood TM701a (2m/440) and TM-321A (220) radios to go with it, for sale. These were hooked in to an Scom 7k. If anyone is interested, email me at: [EMAIL PROTECTED] Chuck K0XM ---End Message---
Re: [Repeater-Builder] Complete remote base stuff for sale.
Please note: message attached oh.. here is a guy looking for an RBI-1 only, not the radios [EMAIL PROTECTED] Do you remember what DHE was selling these for? W8RLL _ Play it loud with a new car stereo! Click here! http://thirdpartyoffers.juno.com/TGL2121/fc/Ioyw6i3n6nDpC9iGXTjwR65HgJnEvlbZwPhFSinn5Ca0wGLV7tXycw/ ---BeginMessage--- Hi eveyone, I am making some changes on the UHF system we have here in KC. And in those chages, I have a complete Doug Hall RBI-1 remote interface and Kenwood TM701a (2m/440) and TM-321A (220) radios to go with it, for sale. These were hooked in to an Scom 7k. If anyone is interested, email me at: [EMAIL PROTECTED] Chuck K0XM ---End Message---
Re: [Repeater-Builder] Complete remote base stuff for sale.
Please note: message attached I tried to email directly but it was blocked. I just said that I also have a similar set up for sale.. RBI-1 and a Kenwood 701. I would like to know what you get out of yours so I can figure a starting point on ebay. I also have a RLC-3 with 5 radio cards. 73, Dick W8RLL _ Beauty Product Reviews Read unbiased beauty product reviews and join our product review team! http://thirdpartyoffers.juno.com/TGL2121/fc/JKFkuJi7GiXtdgLmFwZJiOJ647Bm4os3WGNly5ZwGUlTsm0g8Rl3Yk/ ---BeginMessage--- Hi eveyone, I am making some changes on the UHF system we have here in KC. And in those chages, I have a complete Doug Hall RBI-1 remote interface and Kenwood TM701a (2m/440) and TM-321A (220) radios to go with it, for sale. These were hooked in to an Scom 7k. If anyone is interested, email me at: [EMAIL PROTECTED] Chuck K0XM ---End Message---
[Repeater-Builder] Call for Papers - ARRL and TAPR Digital Communications Conference
Conferences: ARRL and TAPR Digital Communications Conference The 27th DCC September 26-28, 2008 - Chicago , Illinois Introduction Mark your calendar and start making plans to attend the premier technical conference of the year, the 27th Annual ARRL and TAPR Digital Communications Conference to be held September 26-28, 2008, in Chicago , Illinois. The conference location is the Holiday Inn Hotel, Elk Grove Village IL The ARRL and TAPR Digital Communications Conference is an international forum for radio amateurs to meet, publish their work, and present new ideas and techniques. Presenters and attendees will have the opportunity to exchange ideas and learn about recent hardware and software advances, theories, experimental results, and practical applications. Topics include, but are not limited to: Software defined radio (SDR), digital voice, digital satellite communications, Global Position System (GPS), precision timing, Automatic Position Reporting System® (APRS), short messaging (a mode of APRS), Digital Signal Processing (DSP), HF digital modes, Internet interoperability with amateur radio networks, spread spectrum, IEEE 802.11 and other Part 15 license-exempt systems adaptable for Amateur Radio, using TCP/IP networking over amateur radio, mesh and peer to peer wireless networking, emergency and Homeland Defense backup digital communications, using Linux in amateur radio, updates on AX.25 and other wireless networking protocols. Call for Papers Technical papers are solicited for presentation at the 27th Annual ARRL and TAPR Digital Communications Conference to be held September 26-28, 2008 in Chicago , Illinois and publication in the Conference Proceedings. Annual conference proceedings are published by the ARRL. Presentation at the conference is not required for publication. Submission of papers are due by July 31st, 2008 and should be submitted to Maty Weinberg, ARRL 225 Main Street Newington , CT 06111 or via the Internet to [EMAIL PROTECTED] Details on Call for Papers Technical papers are solicited for presentation at the ARRL and TAPR Digital Communications Conference for publication in the Conference Proceedings. Annual conference proceedings are published by the ARRL. Presentation at the conference is not required for publication. The ARRL and TAPR Digital Communications Conference is an international forum for radio amateurs to meet, publish their work, and present new ideas and techniques. Presenters and attendees will have the opportunity to exchange ideas and learn about recent hardware and software advances, theories, experimental results, and practical applications. Topics include, but are not limited to: Software defined radio (SDR) Digital voice Digital satellite communications Global position system Precise Timing Automatic Position Reporting System (APRS) Short messaging (a mode of APRS) Digital Signal Processing (DSP) HF digital modes Internet interoperability with Amateur Radio networks Spread spectrum IEEE 802.11 and other Part 15 license-exempt systems adaptable for Amateur Radio Using TCP/IP networking over Amateur Radio Mesh and peer to peer wireless networking Emergency and Homeland Defense backup digital communications in Amateur Radio Updates on AX.25 and other wireless networking protocols Topics that advanced the amateur radio art Submission Guide Lines Anyone interested in digital communications is invited to submit a paper for publication in the Conference Proceedings. Presentation at the Conference is not required for publication. If you know of someone who is doing great things with digital communications, be sure to personally tell them about this! See above for deadlines and where to submit your paper. Some quick guidelines: Papers should be on 8-1/2 X 11 inch paper with the following margins: left and right, 0.75 inch; top, 0.8 inch; and bottom, 1 inch (very important). Structure of paper should be (see single column example below, two column should follow a similar format): Title Author(s) with affiliation Abstract (200 words or less) Key words (3-5) Body Reference List Papers can be in one- or two-column format. Use 12-point Times Roman for the main body of text; do not number pages. Photos and drawings should have good contrast. Note: a photocopy gives a good indication of print quality. Electronic submissions can be made in any of the following formats: Adobe Acrobat PDF; Microsoft Word Reference citations and other topics not explicitly discussed in this list should follow a recognized standard format (APA, IEEE, etc). A biographical page is to be included with the manuscript. It should contain Name, Address, Phone, and E-mail for each author as well as a short descriptive paragraph about the first author. The bio page will be used to contact authors concerning the conference and presentation schedule. Release form: A formal release form is not required, but
Re: [Repeater-Builder] Re: Low-band MaraTrac Squelch Pots
- Original Message - From: Bob M. [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: Tuesday, February 05, 2008 4:04 PM Subject: Re: [Repeater-Builder] Re: Low-band MaraTrac Squelch Pots [snip] I could replace the connector IF I had a part number and IF Motorola still had one. It's an 18-pin female dual row, right-angle, 0.100 inch type. I didn't find one on Mouser, but did find a 2mm connector of the right style. Oftentimes, you can install two smaller connectors to make up the one you need, say a10-pin and an 8-pin, just as you can with IC sockets. George, KA3HSW / WQGJ413
[Repeater-Builder] Micor station modules?
Can Micor station modules be used in an MSR2000 station? -- Kris Kirby, KE4AHR [EMAIL PROTECTED] But remember, with no superpowers comes no responsibility. --rly
[Repeater-Builder] Re: Micor station modules?
Second question (I've been wondering about this for a long time and was too lazy to ask)! Can Micor station modules be used in an MSR2000 station? and vice-versa? --- In Repeater-Builder@yahoogroups.com, Kris Kirby [EMAIL PROTECTED] wrote: Can Micor station modules be used in an MSR2000 station? -- Kris Kirby, KE4AHR [EMAIL PROTECTED] But remember, with no superpowers comes no responsibility. --rly
