[Repeater-Builder] Re: 4 Questions on UHF Mitreks
--- In Repeater-Builder@yahoogroups.com, Cort Buffington [EMAIL PROTECTED] wrote: I spent years with just a 50uA panel meter with lead wires and pins on the end -- sticking the pins in the right socket positions to take the readings. Not fun, but when I was broke in and just out of college it worked a lot better than spending money on a test set. I never met a Mitrek receiver that didn't reasonably well as low as the helical resonators would tune. They'd lose a little sensitivity, but if the helicals didn't bottom out, they worked. That was my limiting factor. Transmitters seemed to always work, though the PA produced more heat as they got farther away from their comfort zone. On Apr 29, 2008, at 7:47 PM, emt747 wrote: Hello all, 4 questions: 1- Has anybody had any luck tuning the TX down to 438.XXX? 2- What kind of RX sens. is expected on 448.XXX? I am getting around .50uV 2- Does anybody have any tips on tuning the Mitrek without the test set? It's not easy, and without a meter it's not accurate just by listening to the signal to noise ratio, with signal down in the noise!! Incidently, ALWAYS use a 20,000 ohm resistor in series with the 50 microamp meter used to tune it up. The test set uses the resistor built in. 3- Does anybody have a test set for sale? It's easier to build one rather that to buy, partiularly on an auction, but using without removable adapter cords!! Dick, W7TIO I am working with T34JJA3900DK,T34JJA3900DL,T34JJA3900AK Any help or ideas would be great. Thanks, Brent -- Cort Buffington H: +1-785-838-3034 M: +1-785-865-7206
RE: [Repeater-Builder] MSR2000
Hi Ron, Thanks for the info. That's exactly what I'm afraid might happen. But, as you say, the MSR2000 has better shielding and it's worth a try. Since it is unlikely that both receivers will be receiving their signals at the same time, I can always give each receiver, and it's mating far-end link TX, a different PL tone and get around it that way. If the IF's are talking to each other at least only one will open up. Tony VE3DWI _ From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Ron Wright Sent: May 1, 2008 00:55 To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] MSR2000 Tony, In the Mot Consoles using the Mitrek if they had same IF and were stacked they would talk to each other. I would think if single unit would not be a problem. It has to do when you have more than one in one place. I would think the MSR2000 is better shielded, but the IFs might not be shielded as good as needed if 2 rcvrs installed in one MSR2000. 73, ron, n9ee/r
Re: [Repeater-Builder] antenna question
hi all, I am about to replace a DB224 side mounted at 1175 ft above ground. The antenna is close to the Gulf, 0.5 mi, and think the salt air got to it. It has been up about 12 years and now has an SWR of 2:1. The coverage is very noticeably less. I am thinking of a Super Station Master fiberglass enclosed antenna as a replacement. The Celwave/RFS 220 is my thinking. Any thoughts about this from some who have experience with salt air. I like the DB224 and many locally use them. I like being able to skew the pattern, but others locally have had similar salt air problems with VHF and UHF exposed dipoles. I've also seen the Super Station Masters last decades in harsh environments. 73, ron, n9ee/r Ron Wright, N9EE 727-376-6575 MICRO COMPUTER CONCEPTS Owner 146.64 repeater Tampa Bay, FL No tone, all are welcome.
Re: [Repeater-Builder] Philips FM814 circuits
Hello Stef Does your handbook have a Buff or Blue cover, I have both, my Blue cover HB is dated 1985 Issue 2. The PCB numbers are for the blank board and not the made up board part number, just to be difficult. Looking at the Receiver layout in my Blue HB, I can see the PCB number (backwards) 3502 309 95141 iss. I, so I am assuming that the Blue Handbook is the one you need. Luckily I have a CD from Phil VK1ZPL that has the Blue handbook as ~ 140 x A4 .jpg drawings all ~ 1+ MB each, the ccts are made up from 4 x A4 pics and need to be joined, they all add up to 140 MB, so it's not feasible to send via Email. If you want I can copy to a CD and send to you. Regards Don vk2zcz - Original Message - From: stef To: Repeater-Builder@yahoogroups.com Sent: Thursday, May 01, 2008 8:40 PM Subject: [Repeater-Builder] Philips FM814 circuits Hello fellow repeater builders, I am repairing 2 Philips FM814 VHF repeaters and I am in need of some circuit diagrams. I have 2 manuals for Philips FM814's already but neither of them cover the circuit boards used in the units I have as they are late models from near the end of the line. I am hopeful that somone may have circuit schematics for the following boards with the Philips numbers. a.. Receiver board 3502 309 92141 issue I . b.. control Regulator board 3502 309 9200 issue D. c.. Driver board 3502 309 91751 issue A. d.. Oscillator board OM806 309 92261 issue F. e.. Power amplifier board 3502 309 90481 issue F. f.. Audio board only marking on board is 8845. All these boards have dates screen printed on them from 1988 to 1989. Some I/O pin connections and component hardware are different to the earlier versions covered by the manuals I have. Philips/Simoco can not help me with any of the circuits because, they say, of the age of the repeaters. Hoping somone may be able to help me with the schematics. Regards VK4YHB
RE: [Repeater-Builder] antenna question
Ron, I am a big proponent of the DB line of antennas but I also add that they must be set up correctly before they are installed, especially in a high humidity/salt air environment like you are talking about. The following is what I learned form the two engineers that developed the DB line of folded dipole antennas decades ago. I have posted this several times on R/B and will do it again. When you get a brand new antenna from DB you must take all the nuts off where the coax connects to the dipoles and tighten the screws and nuts through the dipole, you will find many are finger tight. Once these screws and nuts are tight then put the coax terminal back on the dipole. The second part of making a new DB folded dipole antenna last is sealing every nook and cranny of the antenna with 3M Scotchkote. I paint at least two coats on every screwhead, coax end, nut, plastic molded junction and anything that could be a point of bimetal corrosion or coax water leak. If I could dip it in Scotchkote I would. Warning, don't get it on your skin, you will wear it for several days. You can clean it up a little with MEK. By the way, I did some research and MEK is not as bad of a carcinogen as some people would lead you to believe. I have installed several DB 224 antennas in the Tampa area with this method with few problems. While the fiberglass antennas have the radome they are still vented to the salt air and you can't get in them to seal the potential bimetal corrosion problems like you can the DB antennas. One other plus for folded dipole antennas, the fiberglass antennas are much more prone to become toothpicks with a lightning strike where a 224 will most likely survive. Paul -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Ron Wright Sent: Thursday, May 01, 2008 9:39 AM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] antenna question hi all, I am about to replace a DB224 side mounted at 1175 ft above ground. The antenna is close to the Gulf, 0.5 mi, and think the salt air got to it. It has been up about 12 years and now has an SWR of 2:1. The coverage is very noticeably less. I am thinking of a Super Station Master fiberglass enclosed antenna as a replacement. The Celwave/RFS 220 is my thinking. Any thoughts about this from some who have experience with salt air. I like the DB224 and many locally use them. I like being able to skew the pattern, but others locally have had similar salt air problems with VHF and UHF exposed dipoles. I've also seen the Super Station Masters last decades in harsh environments. 73, ron, n9ee/r Ron Wright, N9EE 727-376-6575 MICRO COMPUTER CONCEPTS Owner 146.64 repeater Tampa Bay, FL No tone, all are welcome. Yahoo! Groups Links No virus found in this incoming message. Checked by AVG. Version: 7.5.524 / Virus Database: 269.23.7/1408 - Release Date: 4/30/2008 6:10 PM No virus found in this outgoing message. Checked by AVG. Version: 7.5.524 / Virus Database: 269.23.7/1408 - Release Date: 4/30/2008 6:10 PM 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/
[Repeater-Builder] Re: MSR-2000 Extra 2nd Receiver Slot (location)
Re: MSR-2000 Extra 2nd Receiver Slot (location) No problem Tony, I think I've seen about one of everything that might fit into the extra receiver slot jammed, mounted, forced, living, dead, leaked into and otherwise well done... Some people are pretty creative using the available 2nd receiver space. Some day I expect a small Jack Rabbit to kick out of a repeater cabinet when I pull the covers off. Beats the mice, rats, snakes and spiders on the show list so far... cheers, skipp Tony Lelieveld [EMAIL PROTECTED] wrote: Thanks skipp. Yes it has all the filtering for a repeater. I don't have an R2 audio/squelch module but I'll use a second R1 module which I will modify with the addition of a small PL decode board and make sure it will reflect the same pin-out as the R2 board lay-out etc. Tony VE3DWI _ From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of skipp025 Sent: April 30, 2008 19:48 To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Re: MSR2000 Shouldn't change the performance regardless of which Receiver-IF you use if the duplex filter boards, covers and proper shield kits are installed. Sometimes some of the receiver stuff leaks RF but it shouldn't be that much, nor that far to change anything in the other receiver as long as the mentioned above options are in place. Motorola sold option kits to operate both receiver boards at the same time. cheers, skipp Tony Lelieveld ve3dwi@ wrote: Hi all, Does anyone know what the consequences are of using a second receiver with an IF of 10.7 instead of 10.8 MHz in the 2nd RX spot of an MSR2000. Tnx for any help VE3DWI
[Repeater-Builder] Re: TKR820 (tkr-720) COR Logic (pin13) information wanted.
Re: TKR820 (tkr-720) COR Logic (pin13) information wanted. Wow, this post has some history... y yo necesito mas practicar en espanol Que Lastima! Read on. The Kenwood TKR-720 and TKR-820 repeaters have a cor output logic line with non-standard voltage values. The cor changes dc level with cos however, the dc values are not standard in the form of active high being some voltage and active low going to dc ground (or the converse). I designed and build a simple dc level detector circuit I now use for all my repeater cor/cos and squelch detection circuits. I've got the design down to one very fast adjustment and it otherwise doesn't care what the input voltage values are or where they transition to output a standard form-C type relay or simple FET/bipolar transistor output. It's a viable enough design that I'm having a fair number of pc-boards made to be offered cheap to anyone who might want one in kit or pre-built form. The time line for the project is at least after Dayton and maybe into June. But if you'd like to make your own you can contact me direct and I'll try to help you with the proper information. cheers, skipp skipp025 at yahoo.com www.radiowrench.com Private [EMAIL PROTECTED] wrote: Ive been searching for that for abt a month now...Im running a 820 with the Arcom Rc210 controller but, and I think u know what im going to say, lolWont keyup without COR...let me know if u fand anything out and Ill share with you. Frank --- In Repeater-Builder@yahoogroups.com, XE2SI xe2si@ wrote: Hello Skipp, I am here in Tijuana, just across the border with San Ysidro, Ca. Good it works for you. 73. Juan - Original Message - From: skipp025 To: Repeater-Builder@yahoogroups.com Sent: Tuesday, January 11, 2005 8:31 AM Subject: [Repeater-Builder] Re: TKR820 (tkr-720) CORlogic(pin13) informationwanted. Just what the doctor ordered. Thanks Juan. Su respuesta trabajada muy bien. �Qu� estado usted vivo adentro? Tengo familia en GTO, MX Gracias otra vez mucho. skipp XE2SI [EMAIL PROTECTED] wrote: Looks that you have an old repeater, the new ones have that pin called TOR wich is what you want, if this is the case there is a small square island in the controller board near the IC11 ( pin 9 ), this change state when there is a valid PL received, maybe you will need a buffer for what you need. hope this helps. Juan - Original Message - From: skipp025 To: Repeater-Builder@yahoogroups.com Sent: Monday, January 10, 2005 6:27 PM Subject: [Repeater-Builder] TKR820 (tkr-720) COR logic (pin 13)informationwanted. Hello there, Anyone have information to configure the COR output logic on the Kenwood TKR820 Repeater to ctcss only? I'd like to make pin 13 (COR) of the accessory connector change states with a valid received ctcss tone. As received, accessory pin 13 (COR) changes state with carrier squelch activity. This tidbit of knowledge seems to be a rather elusive animal. Maybe one of you has done this already? Thanks in advance for your reply. cheers, skipp skipp025 at yahoo.com Yahoo! Groups Links
Re: [Repeater-Builder] Re: TKR820 (tkr-720) COR Logic (pin13) information wanted.
Skipp and others The problem he is facing is really quite simple. According to the service manual for the TKR-820, the so-called CO output on the 15 pin Molex style Accessory connector provides an open collector output LOW when carrier is active UNLESS the repeater is programmed for tone decode in which case the CO output is tone squelch based (I'm not sure if that means decode only output or it is AND's with COR). In any case, that's what the service manual says. I spent a bit of time on the phone with Kenwood tech support about this the other day and they seemed somewhat stumped that it worked this way. He sent me a couple excerpts from the service manual, including this one (which may be the most important piece of info from them so far - this is from Service Bulletin T-89-88-LM) I've posted it on our website (with Kenwood's permission). This may be what Frank is looking for. http://www.arcomcontrollers.com/rc210/t-89-88.pdf Hope this helps Ken At 09:07 AM 5/1/2008, skipp025 wrote: Re: TKR820 (tkr-720) COR Logic (pin13) information wanted. Wow, this post has some history... y yo necesito mas practicar en espanol Que Lastima! Read on. The Kenwood TKR-720 and TKR-820 repeaters have a cor output logic line with non-standard voltage values. The cor changes dc level with cos however, the dc values are not standard in the form of active high being some voltage and active low going to dc ground (or the converse). I designed and build a simple dc level detector circuit I now use for all my repeater cor/cos and squelch detection circuits. I've got the design down to one very fast adjustment and it otherwise doesn't care what the input voltage values are or where they transition to output a standard form-C type relay or simple FET/bipolar transistor output. It's a viable enough design that I'm having a fair number of pc-boards made to be offered cheap to anyone who might want one in kit or pre-built form. The time line for the project is at least after Dayton and maybe into June. But if you'd like to make your own you can contact me direct and I'll try to help you with the proper information. cheers, skipp skipp025 at yahoo.com www.radiowrench.com Private [EMAIL PROTECTED] wrote: Ive been searching for that for abt a month now...Im running a 820 with the Arcom Rc210 controller but, and I think u know what im going to say, lolWont keyup without COR...let me know if u fand anything out and Ill share with you. Frank --- In mailto:Repeater-Builder%40yahoogroups.comRepeater-Builder@yahoogroups.com, XE2SI xe2si@ wrote: Hello Skipp, I am here in Tijuana, just across the border with San Ysidro, Ca. Good it works for you. 73. Juan - Original Message - From: skipp025 To: mailto:Repeater-Builder%40yahoogroups.comRepeater-Builder@yahoogroups.com Sent: Tuesday, January 11, 2005 8:31 AM Subject: [Repeater-Builder] Re: TKR820 (tkr-720) CORlogic(pin13) informationwanted. Just what the doctor ordered. Thanks Juan. Su respuesta trabajada muy bien. �Qu� estado usted vivo adentro? Tengo familia en GTO, MX Gracias otra vez mucho. skipp XE2SI [EMAIL PROTECTED] wrote: Looks that you have an old repeater, the new ones have that pin called TOR wich is what you want, if this is the case there is a small square island in the controller board near the IC11 ( pin 9 ), this change state when there is a valid PL received, maybe you will need a buffer for what you need. hope this helps. Juan - Original Message - From: skipp025 To: mailto:Repeater-Builder%40yahoogroups.comRepeater-Builder@yahoogroups.com Sent: Monday, January 10, 2005 6:27 PM Subject: [Repeater-Builder] TKR820 (tkr-720) COR logic (pin 13)informationwanted. Hello there, Anyone have information to configure the COR output logic on the Kenwood TKR820 Repeater to ctcss only? I'd like to make pin 13 (COR) of the accessory connector change states with a valid received ctcss tone. As received, accessory pin 13 (COR) changes state with carrier squelch activity. This tidbit of knowledge seems to be a rather elusive animal. Maybe one of you has done this already? Thanks in advance for your reply. cheers, skipp skipp025 at yahoo.com Yahoo! Groups Links -- President and CTO - Arcom Communications Makers of repeater controllers and accessories. http://www.arcomcontrollers.com/ Authorized Dealers for Kenwood and Telewave and we offer complete repeater packages! AH6LE/R - IRLP Node 3000 http://www.irlp.net We don't just make 'em. We use 'em!
Re: RE: [Repeater-Builder] antenna question
Paul, I know this DB224 was prepared for the weather. I was not the one who did it, but know the person who did and he is very particular. He has same problem with other exposed dipole antennas close to the gulf. I will check to see what coating he used. I did see him prepare a DB224 for install. All of what you did was done, but not sure about this antenna. 73, ron, n9ee/r From: Paul Finch [EMAIL PROTECTED] Date: 2008/05/01 Thu AM 10:44:37 CDT To: Repeater-Builder@yahoogroups.com Subject: RE: [Repeater-Builder] antenna question Ron, I am a big proponent of the DB line of antennas but I also add that they must be set up correctly before they are installed, especially in a high humidity/salt air environment like you are talking about. The following is what I learned form the two engineers that developed the DB line of folded dipole antennas decades ago. I have posted this several times on R/B and will do it again. When you get a brand new antenna from DB you must take all the nuts off where the coax connects to the dipoles and tighten the screws and nuts through the dipole, you will find many are finger tight. Once these screws and nuts are tight then put the coax terminal back on the dipole. The second part of making a new DB folded dipole antenna last is sealing every nook and cranny of the antenna with 3M Scotchkote. I paint at least two coats on every screwhead, coax end, nut, plastic molded junction and anything that could be a point of bimetal corrosion or coax water leak. If I could dip it in Scotchkote I would. Warning, don't get it on your skin, you will wear it for several days. You can clean it up a little with MEK. By the way, I did some research and MEK is not as bad of a carcinogen as some people would lead you to believe. I have installed several DB 224 antennas in the Tampa area with this method with few problems. While the fiberglass antennas have the radome they are still vented to the salt air and you can't get in them to seal the potential bimetal corrosion problems like you can the DB antennas. One other plus for folded dipole antennas, the fiberglass antennas are much more prone to become toothpicks with a lightning strike where a 224 will most likely survive. Paul -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Ron Wright Sent: Thursday, May 01, 2008 9:39 AM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] antenna question hi all, I am about to replace a DB224 side mounted at 1175 ft above ground. The antenna is close to the Gulf, 0.5 mi, and think the salt air got to it. It has been up about 12 years and now has an SWR of 2:1. The coverage is very noticeably less. I am thinking of a Super Station Master fiberglass enclosed antenna as a replacement. The Celwave/RFS 220 is my thinking. Any thoughts about this from some who have experience with salt air. I like the DB224 and many locally use them. I like being able to skew the pattern, but others locally have had similar salt air problems with VHF and UHF exposed dipoles. I've also seen the Super Station Masters last decades in harsh environments. 73, ron, n9ee/r Ron Wright, N9EE 727-376-6575 MICRO COMPUTER CONCEPTS Owner 146.64 repeater Tampa Bay, FL No tone, all are welcome. Yahoo! Groups Links No virus found in this incoming message. Checked by AVG. Version: 7.5.524 / Virus Database: 269.23.7/1408 - Release Date: 4/30/2008 6:10 PM No virus found in this outgoing message. Checked by AVG. Version: 7.5.524 / Virus Database: 269.23.7/1408 - Release Date: 4/30/2008 6:10 PM Yahoo! Groups Links Ron Wright, N9EE 727-376-6575 MICRO COMPUTER CONCEPTS Owner 146.64 repeater Tampa Bay, FL No tone, all are welcome.
Re: [Repeater-Builder] Re: TKR820 (tkr-720) COR Logic (pin13) information wanted.
I did that with a TKR-720 and a Motorola GM300 as a Remote Base still working nice. John - Original Message From: skipp025 [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: Thursday, May 1, 2008 11:37:00 AM Subject: [Repeater-Builder] Re: TKR820 (tkr-720) COR Logic (pin13) information wanted. Re: TKR820 (tkr-720) COR Logic (pin13) information wanted. Wow, this post has some history... y yo necesito mas practicar en espanol Que Lastima! Read on. The Kenwood TKR-720 and TKR-820 repeaters have a cor output logic line with non-standard voltage values. The cor changes dc level with cos however, the dc values are not standard in the form of active high being some voltage and active low going to dc ground (or the converse). I designed and build a simple dc level detector circuit I now use for all my repeater cor/cos and squelch detection circuits. I've got the design down to one very fast adjustment and it otherwise doesn't care what the input voltage values are or where they transition to output a standard form-C type relay or simple FET/bipolar transistor output. It's a viable enough design that I'm having a fair number of pc-boards made to be offered cheap to anyone who might want one in kit or pre-built form. The time line for the project is at least after Dayton and maybe into June. But if you'd like to make your own you can contact me direct and I'll try to help you with the proper information. cheers, skipp skipp025 at yahoo.com www.radiowrench. com Private [EMAIL PROTECTED] .. wrote: Ive been searching for that for abt a month now...Im running a 820 with the Arcom Rc210 controller but, and I think u know what im going to say, lolWont keyup without COR...let me know if u fand anything out and Ill share with you. Frank --- In Repeater-Builder@ yahoogroups. com, XE2SI xe2si@ wrote: Hello Skipp, I am here in Tijuana, just across the border with San Ysidro, Ca. Good it works for you. 73. Juan - Original Message - From: skipp025 To: Repeater-Builder@ yahoogroups. com Sent: Tuesday, January 11, 2005 8:31 AM Subject: [Repeater-Builder] Re: TKR820 (tkr-720) CORlogic(pin13) informationwanted. Just what the doctor ordered. Thanks Juan. Su respuesta trabajada muy bien. �Qu� estado usted vivo adentro? Tengo familia en GTO, MX Gracias otra vez mucho. skipp XE2SI [EMAIL PROTECTED] wrote: Looks that you have an old repeater, the new ones have that pin called TOR wich is what you want, if this is the case there is a small square island in the controller board near the IC11 ( pin 9 ), this change state when there is a valid PL received, maybe you will need a buffer for what you need. hope this helps. Juan - Original Message - From: skipp025 To: Repeater-Builder@ yahoogroups. com Sent: Monday, January 10, 2005 6:27 PM Subject: [Repeater-Builder] TKR820 (tkr-720) COR logic (pin 13)informationwante d. Hello there, Anyone have information to configure the COR output logic on the Kenwood TKR820 Repeater to ctcss only? I'd like to make pin 13 (COR) of the accessory connector change states with a valid received ctcss tone. As received, accessory pin 13 (COR) changes state with carrier squelch activity. This tidbit of knowledge seems to be a rather elusive animal. Maybe one of you has done this already? Thanks in advance for your reply.. cheers, skipp skipp025 at yahoo.com Yahoo! Groups Links Be a better friend, newshound, and know-it-all with Yahoo! Mobile. Try it now. http://mobile.yahoo.com/;_ylt=Ahu06i62sR8HDtDypao8Wcj9tAcJ
[Repeater-Builder] For Sale: Two, MSR2000 VHF Base Stations
For Sale/Moving: I have two, MSR2000 VHF Base Station units that I am selling. One has the test kit included with it. I do not know much about these units, however I do have complete photos available upon e-mail request. They were working when pulled from public-safety service less than a year ago. I am in the process of moving and would just like to sell them off. I am asking $200 for the complete package, yes that includes both MSR2000 Base Stations and the Test Kit. They must be picked up locally as they are too heavy and too large to ship. I am located near Ann Arbor, Michigan and I would be willing to drive them locally if needed. Please e-mail me directly with any questions at: [EMAIL PROTECTED] Thanks, Jerry - K8GLD
Now connector for TKR 720/820 repeat control board plug WAS RE: [Repeater-Builder] Re: TKR820
Hello, Brings up a question, has anyone been able to find one of those connectors that the normal repeater controller has on it that plugs into the logic board? I want to use one of my Ham style controllers on the repeater and would rather have it inside the unit than out. Paul _ From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Ken Arck Sent: Thursday, May 01, 2008 11:21 AM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Re: TKR820 (tkr-720) COR Logic (pin13) information wanted. Skipp and others The problem he is facing is really quite simple. According to the service manual for the TKR-820, the so-called CO output on the 15 pin Molex style Accessory connector provides an open collector output LOW when carrier is active UNLESS the repeater is programmed for tone decode in which case the CO output is tone squelch based (I'm not sure if that means decode only output or it is AND's with COR). In any case, that's what the service manual says. I spent a bit of time on the phone with Kenwood tech support about this the other day and they seemed somewhat stumped that it worked this way. He sent me a couple excerpts from the service manual, including this one (which may be the most important piece of info from them so far - this is from Service Bulletin T-89-88-LM) I've posted it on our website (with Kenwood's permission). This may be what Frank is looking for. HYPERLINK http://www.arcomcontrollers.com/rc210/t-89-88.pdfhttp://www.arcomcontrolle rs.com/rc210/t-89-88.pdf Hope this helps Ken At 09:07 AM 5/1/2008, skipp025 wrote: Re: TKR820 (tkr-720) COR Logic (pin13) information wanted. Wow, this post has some history... y yo necesito mas practicar en espanol Que Lastima! Read on. The Kenwood TKR-720 and TKR-820 repeaters have a cor output logic line with non-standard voltage values. The cor changes dc level with cos however, the dc values are not standard in the form of active high being some voltage and active low going to dc ground (or the converse). I designed and build a simple dc level detector circuit I now use for all my repeater cor/cos and squelch detection circuits. I've got the design down to one very fast adjustment and it otherwise doesn't care what the input voltage values are or where they transition to output a standard form-C type relay or simple FET/bipolar transistor output. It's a viable enough design that I'm having a fair number of pc-boards made to be offered cheap to anyone who might want one in kit or pre-built form. The time line for the project is at least after Dayton and maybe into June. But if you'd like to make your own you can contact me direct and I'll try to help you with the proper information. cheers, skipp skipp025 at yahoo.com HYPERLINK http://www.radiowrench.com/www.radiowrench.com Private [EMAIL PROTECTED] wrote: Ive been searching for that for abt a month now...Im running a 820 with the Arcom Rc210 controller but, and I think u know what im going to say, lolWont keyup without COR...let me know if u fand anything out and Ill share with you. Frank --- In HYPERLINK mailto:Repeater-Builder%40yahoogroups.comRepeater-Builder@yahoogroups.com, XE2SI xe2si@ wrote: Hello Skipp, I am here in Tijuana, just across the border with San Ysidro, Ca. Good it works for you. 73. Juan - Original Message - From: skipp025 To: HYPERLINK mailto:Repeater-Builder%40yahoogroups.comRepeater-Builder@yahoogroups.com Sent: Tuesday, January 11, 2005 8:31 AM Subject: [Repeater-Builder] Re: TKR820 (tkr-720) CORlogic(pin13) informationwanted. Just what the doctor ordered. Thanks Juan. Su respuesta trabajada muy bien. �Qu� estado usted vivo adentro? Tengo familia en GTO, MX Gracias otra vez mucho. skipp XE2SI [EMAIL PROTECTED] wrote: Looks that you have an old repeater, the new ones have that pin called TOR wich is what you want, if this is the case there is a small square island in the controller board near the IC11 ( pin 9 ), this change state when there is a valid PL received, maybe you will need a buffer for what you need. hope this helps. Juan - Original Message - From: skipp025 To: HYPERLINK mailto:Repeater-Builder%40yahoogroups.comRepeater-Builder@yahoogroups.com Sent: Monday, January 10, 2005 6:27 PM Subject: [Repeater-Builder] TKR820 (tkr-720) COR logic (pin 13)informationwanted. Hello there, Anyone have information to configure the COR output logic on the Kenwood TKR820 Repeater to ctcss only? I'd like to make pin 13 (COR) of the accessory connector change states with a valid received ctcss tone. As received, accessory pin 13 (COR) changes state with carrier squelch activity. This tidbit of knowledge seems to be a rather elusive animal. Maybe one of you has done this already?
[Repeater-Builder] IFR 1000S
OK. So if anyone remembers I was working on a friends IFR 1100S that had a bad power supply. The plans were that if I got it working I was going to buy it off of him. Well he got a letter from the govt surplus auction house that he purchased the pair of 1100Ss from and the govt has reclassified the units and he now has to turn them in to be destroyed. So I ended up buying a 1000S from ebay. So here are a couple of questions. First on the right side there is an auto switch. What is that supposed to do? Second the panel that is in the lid of the 1100S accidently fell out of it before it got turned back in to the auction house. Is there any way to use any of the stuff from the 1100S panel on the 1000S? The din connector doesn't exist on the 1000S so I am sure some mods would need to be done if nothing else to get power to the panel. Thoughts? Also the squelch is a little flakey on the 1000S but I am not too worried about it right now. However if I do end up having to go in there for anything else is there anything I should look at in the squelch circuit that might cause it not to open up as early as it should? Thanks, Vern
Re: [Repeater-Builder] antenna question
Paul Finch wrote: I have posted this several times on R/B and will do it again. When you get Maybe it should be an article? :-) Nate WY0X
Re: RE: [Repeater-Builder] antenna question
Paul, I talked with my friend about the DB224. He said as you did. When you get it you have to tighten the hardware. Some was more than finger loose. This is for all antennas, but more for DB Products. He has used the Scotchkote. He likes it, but noted lasted only 3-5 years. He has remove antennas it was used on and at places where he had put black tape then coated it with the Scotchkote the tape was there, but the Scotchkote was gone especially on the side of the sun exposure. He did not know what the MEK was. Another problem he and I also have seen with the DB224 is where the high side of the coax connects to the folded dipoles. There is a small think fiberglass tubing to secure the loop ends together. We have noted on antennas that have been up for a while this piece is either gone or badly damaged. Mainly a structure component. I'm giving myself about a week to think on the DB224 or Station Master. I like both, but lean toward the Station Master. 73, ron, n9ee/r From: Paul Finch [EMAIL PROTECTED] Date: 2008/05/01 Thu AM 10:44:37 CDT To: Repeater-Builder@yahoogroups.com Subject: RE: [Repeater-Builder] antenna question Ron, I am a big proponent of the DB line of antennas but I also add that they must be set up correctly before they are installed, especially in a high humidity/salt air environment like you are talking about. The following is what I learned form the two engineers that developed the DB line of folded dipole antennas decades ago. I have posted this several times on R/B and will do it again. When you get a brand new antenna from DB you must take all the nuts off where the coax connects to the dipoles and tighten the screws and nuts through the dipole, you will find many are finger tight. Once these screws and nuts are tight then put the coax terminal back on the dipole. The second part of making a new DB folded dipole antenna last is sealing every nook and cranny of the antenna with 3M Scotchkote. I paint at least two coats on every screwhead, coax end, nut, plastic molded junction and anything that could be a point of bimetal corrosion or coax water leak. If I could dip it in Scotchkote I would. Warning, don't get it on your skin, you will wear it for several days. You can clean it up a little with MEK. By the way, I did some research and MEK is not as bad of a carcinogen as some people would lead you to believe. I have installed several DB 224 antennas in the Tampa area with this method with few problems. While the fiberglass antennas have the radome they are still vented to the salt air and you can't get in them to seal the potential bimetal corrosion problems like you can the DB antennas. One other plus for folded dipole antennas, the fiberglass antennas are much more prone to become toothpicks with a lightning strike where a 224 will most likely survive. Paul -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Ron Wright Sent: Thursday, May 01, 2008 9:39 AM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] antenna question hi all, I am about to replace a DB224 side mounted at 1175 ft above ground. The antenna is close to the Gulf, 0.5 mi, and think the salt air got to it. It has been up about 12 years and now has an SWR of 2:1. The coverage is very noticeably less. I am thinking of a Super Station Master fiberglass enclosed antenna as a replacement. The Celwave/RFS 220 is my thinking. Any thoughts about this from some who have experience with salt air. I like the DB224 and many locally use them. I like being able to skew the pattern, but others locally have had similar salt air problems with VHF and UHF exposed dipoles. I've also seen the Super Station Masters last decades in harsh environments. 73, ron, n9ee/r Ron Wright, N9EE 727-376-6575 MICRO COMPUTER CONCEPTS Owner 146.64 repeater Tampa Bay, FL No tone, all are welcome. Yahoo! Groups Links No virus found in this incoming message. Checked by AVG. Version: 7.5.524 / Virus Database: 269.23.7/1408 - Release Date: 4/30/2008 6:10 PM No virus found in this outgoing message. Checked by AVG. Version: 7.5.524 / Virus Database: 269.23.7/1408 - Release Date: 4/30/2008 6:10 PM Yahoo! Groups Links Ron Wright, N9EE 727-376-6575 MICRO COMPUTER CONCEPTS Owner 146.64 repeater Tampa Bay, FL No tone, all are welcome.
Re: RE: [Repeater-Builder] antenna question
Have you considered a DB-264E? 73 de N5NPO Norm - Original Message - From: Repeater-Builder@yahoogroups.com Repeater-Builder@yahoogroups.com To: Repeater-Builder@yahoogroups.com Repeater-Builder@yahoogroups.com Sent: Thu May 01 18:43:03 2008 Subject: Re: RE: [Repeater-Builder] antenna question Paul, I talked with my friend about the DB224. He said as you did. When you get it you have to tighten the hardware. Some was more than finger loose. This is for all antennas, but more for DB Products. He has used the Scotchkote. He likes it, but noted lasted only 3-5 years. He has remove antennas it was used on and at places where he had put black tape then coated it with the Scotchkote the tape was there, but the Scotchkote was gone especially on the side of the sun exposure. He did not know what the MEK was. Another problem he and I also have seen with the DB224 is where the high side of the coax connects to the folded dipoles. There is a small think fiberglass tubing to secure the loop ends together. We have noted on antennas that have been up for a while this piece is either gone or badly damaged. Mainly a structure component. I'm giving myself about a week to think on the DB224 or Station Master. I like both, but lean toward the Station Master. 73, ron, n9ee/r From: Paul Finch [EMAIL PROTECTED] mailto:dpaulfinch%40azlecomm.com Date: 2008/05/01 Thu AM 10:44:37 CDT To: Repeater-Builder@yahoogroups.com mailto:Repeater-Builder%40yahoogroups.com Subject: RE: [Repeater-Builder] antenna question Ron, I am a big proponent of the DB line of antennas but I also add that they must be set up correctly before they are installed, especially in a high humidity/salt air environment like you are talking about. The following is what I learned form the two engineers that developed the DB line of folded dipole antennas decades ago. I have posted this several times on R/B and will do it again. When you get a brand new antenna from DB you must take all the nuts off where the coax connects to the dipoles and tighten the screws and nuts through the dipole, you will find many are finger tight. Once these screws and nuts are tight then put the coax terminal back on the dipole. The second part of making a new DB folded dipole antenna last is sealing every nook and cranny of the antenna with 3M Scotchkote. I paint at least two coats on every screwhead, coax end, nut, plastic molded junction and anything that could be a point of bimetal corrosion or coax water leak. If I could dip it in Scotchkote I would. Warning, don't get it on your skin, you will wear it for several days. You can clean it up a little with MEK. By the way, I did some research and MEK is not as bad of a carcinogen as some people would lead you to believe. I have installed several DB 224 antennas in the Tampa area with this method with few problems. While the fiberglass antennas have the radome they are still vented to the salt air and you can't get in them to seal the potential bimetal corrosion problems like you can the DB antennas. One other plus for folded dipole antennas, the fiberglass antennas are much more prone to become toothpicks with a lightning strike where a 224 will most likely survive. Paul -Original Message- From: Repeater-Builder@yahoogroups.com mailto:Repeater-Builder%40yahoogroups.com [mailto:Repeater-Builder@yahoogroups.com mailto:Repeater-Builder%40yahoogroups.com ] On Behalf Of Ron Wright Sent: Thursday, May 01, 2008 9:39 AM To: Repeater-Builder@yahoogroups.com mailto:Repeater-Builder%40yahoogroups.com Subject: Re: [Repeater-Builder] antenna question hi all, I am about to replace a DB224 side mounted at 1175 ft above ground. The antenna is close to the Gulf, 0.5 mi, and think the salt air got to it. It has been up about 12 years and now has an SWR of 2:1. The coverage is very noticeably less. I am thinking of a Super Station Master fiberglass enclosed antenna as a replacement. The Celwave/RFS 220 is my thinking. Any thoughts about this from some who have experience with salt air. I like the DB224 and many locally use them. I like being able to skew the pattern, but others locally have had similar salt air problems with VHF and UHF exposed dipoles. I've also seen the Super Station Masters last decades in harsh environments. 73, ron, n9ee/r Ron Wright, N9EE 727-376-6575 MICRO COMPUTER CONCEPTS Owner 146.64 repeater Tampa Bay, FL No tone, all are welcome. Yahoo! Groups Links No virus found in this incoming message. Checked by AVG. Version: 7.5.524 / Virus Database: 269.23.7/1408 - Release Date: 4/30/2008 6:10 PM No virus found in this outgoing message. Checked by AVG. Version: 7.5.524 / Virus Database: 269.23.7/1408 - Release Date: 4/30/2008 6:10 PM Yahoo! Groups Links Ron Wright, N9EE 727-376-6575 MICRO COMPUTER CONCEPTS Owner 146.64 repeater Tampa Bay, FL No tone, all are welcome.
Re: [Repeater-Builder] antenna question
Ron Wright wrote: I'm giving myself about a week to think on the DB224 or Station Master. I like both, but lean toward the Station Master. Heh, my usual comment... everyone will be expecting this one... Have you considered a Sinclair with the harness internal to the antenna? I still think that's the elegant solution to the above question. You still get the dipole array, but keep the harness out of the sunlight and weather. Ultimately it is up to personal preference. Like a lot of things, if you like it, you'll put up with problems from it and fix it. (Why people drive and rebuild classic cars... even though they're not nearly as reliable as say, an early 90's Honda Civic. Because the Civic is boring.) If you don't like it, you'll get ticked off when you have to fix it, and it won't be fun. :-) Nate WY0X
RE: RE: [Repeater-Builder] antenna question
Take a look at the Antenex YDAF series. These antenna's are manufactured by Bluewave for Antenex. Jeff -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Ron Wright Sent: Thursday, May 01, 2008 4:43 PM To: Repeater-Builder@yahoogroups.com Subject: Re: RE: [Repeater-Builder] antenna question Paul, I talked with my friend about the DB224. He said as you did. When you get it you have to tighten the hardware. Some was more than finger loose. This is for all antennas, but more for DB Products. He has used the Scotchkote. He likes it, but noted lasted only 3-5 years. He has remove antennas it was used on and at places where he had put black tape then coated it with the Scotchkote the tape was there, but the Scotchkote was gone especially on the side of the sun exposure. He did not know what the MEK was. Another problem he and I also have seen with the DB224 is where the high side of the coax connects to the folded dipoles. There is a small think fiberglass tubing to secure the loop ends together. We have noted on antennas that have been up for a while this piece is either gone or badly damaged. Mainly a structure component. I'm giving myself about a week to think on the DB224 or Station Master. I like both, but lean toward the Station Master. 73, ron, n9ee/r
RE: [Repeater-Builder] Field Programming of the TK-370/270
Press the LO key. Jeff -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of jcentv Sent: Wednesday, April 30, 2008 6:14 AM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Field Programming of the TK-370/270 I have read a post from a fellow from Australia about field programming of the TK-370, It worked fine of all the way but I can not find the way to change from QT to DQT, I will appreciate if somebody has info about this. Thanks 73
Re: Re: [Repeater-Builder] antenna question
Nate, My problem is not the harness, but the exposed dipoles. 73, ron, n9ee/r From: Nate Duehr [EMAIL PROTECTED] Date: 2008/05/01 Thu PM 07:00:56 CDT To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] antenna question Ron Wright wrote: I'm giving myself about a week to think on the DB224 or Station Master. I like both, but lean toward the Station Master. Heh, my usual comment... everyone will be expecting this one... Have you considered a Sinclair with the harness internal to the antenna? I still think that's the elegant solution to the above question. You still get the dipole array, but keep the harness out of the sunlight and weather. Ultimately it is up to personal preference. Like a lot of things, if you like it, you'll put up with problems from it and fix it. (Why people drive and rebuild classic cars... even though they're not nearly as reliable as say, an early 90's Honda Civic. Because the Civic is boring.) If you don't like it, you'll get ticked off when you have to fix it, and it won't be fun. :-) Nate WY0X Ron Wright, N9EE 727-376-6575 MICRO COMPUTER CONCEPTS Owner 146.64 repeater Tampa Bay, FL No tone, all are welcome.
[Repeater-Builder] A maxtrac question a little OT..
Does anyone know, or has anyone tried, to use 2 control heads/faceplates on one Maxreac radio? I am outfitting an old ambulance into a communications vehicle and would like to use one radio with a control head/mic in the front and the back rather than needing 2 radios. Thanks! Tom W9SRV
Re: [Repeater-Builder] A maxtrac question a little OT..
Look into a device made by Quickmount (I think that's who made the dual control head interface). Although in the case of an ambulance, having dual radios would be advantageous - the rear could be on the MED channel (or equal) while the front remains on dispatch to keep tabs on what else is going on. With the cost of a Maxtrac, I would opt for the two-radio option. Joe M. tgundo2003 wrote: Does anyone know, or has anyone tried, to use 2 control heads/faceplates on one Maxreac radio? I am outfitting an old ambulance into a communications vehicle and would like to use one radio with a control head/mic in the front and the back rather than needing 2 radios. Thanks! Tom W9SRV Yahoo! Groups Links
Re: [Repeater-Builder] A maxtrac question a little OT..
On Fri, 2 May 2008, MCH wrote: Although in the case of an ambulance, having dual radios would be advantageous - the rear could be on the MED channel (or equal) while the front remains on dispatch to keep tabs on what else is going on. A nice way to pull that off would be something like the CHP dual-radio installation with a dual-PTT button on the microphone -- use one PTT for front and the other for rear, thus allowing either operator to transmit from either radio as long as they can hear both within the vehicle. -- Kris Kirby, KE4AHR [EMAIL PROTECTED] But remember, with no superpowers comes no responsibility. --rly
