RE: [Repeater-Builder] Kenwood Repeater question
Peter, In addition to its very limited heat sink area due to its compact size, the TK-760 has one deficiency that limits its usefulness as a receiver in a repeater system: The COS signal that is available with the KCT-19 accessory cable is carrier only; the radio has no signal that indicates when a carrier with the proper CTCSS or CDCSS tone is received. If you plan to run your repeater with carrier squelch only, this will not be a problem. 73, Eric Lemmon WB6FLY -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Peter Dakota Summerhawk Sent: Saturday, March 22, 2008 11:43 AM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Kenwood Repeater question I have a few of the TK-760's that I have been playing with the idea of thinking of using as a repeater, can this be done? And if so what would it take? Thanks Peter Dakota Summerhawk
RE: [Repeater-Builder] Kenwood Repeater question
The COS signal can be changed by using the 760(TOR) firmware. While I would not use a low power 25 watt unit, a H series turned down to 20 watts will perform very well. While the heat sink appears to be a small footprint, it uses the entire frame and was designed by NASA for maximum heat dissipation (as long as the glue holds on the tile!). The Icom IC-Fx21 series radio uses the same design. Make sure the radio is mounted horizontally with free air flow. Do not stack mobiles on top of each other no matter what brand you end up using. If you add a computer style fan to push air up through the heat sink fins the radio will run continuously at 10-15 watts dependant on ambient temperature. You can use a KCT-19 cable or make your own with standard Molex ZHR conn / SZH pin mini connectors and Molex .062 connectors. If you want the Digikey part numbers I can send them to you. Jeff -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Eric Lemmon Sent: Sunday, March 23, 2008 10:15 AM To: Repeater-Builder@yahoogroups.com Subject: RE: [Repeater-Builder] Kenwood Repeater question Peter, In addition to its very limited heat sink area due to its compact size, the TK-760 has one deficiency that limits its usefulness as a receiver in a repeater system: The COS signal that is available with the KCT-19 accessory cable is carrier only; the radio has no signal that indicates when a carrier with the proper CTCSS or CDCSS tone is received. If you plan to run your repeater with carrier squelch only, this will not be a problem. 73, Eric Lemmon WB6FLY -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Peter Dakota Summerhawk Sent: Saturday, March 22, 2008 11:43 AM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Kenwood Repeater question I have a few of the TK-760's that I have been playing with the idea of thinking of using as a repeater, can this be done? And if so what would it take? Thanks Peter Dakota Summerhawk Yahoo! Groups Links
[Repeater-Builder] Kenwood Repeater question
I have a few of the TK-760’s that I have been playing with the idea of thinking of using as a repeater, can this be done? And if so what would it take? Thanks Peter Dakota Summerhawk No virus found in this outgoing message. Checked by AVG. Version: 7.5.519 / Virus Database: 269.21.8/1338 - Release Date: 3/21/2008 5:52 PM
RE: [Repeater-Builder] Kenwood Repeater question
Hi Peter, The TK-760 radios are great radios; however, I would post them on EBay and get a few Motorola SM-50 radios. All the connections are on the back on the Motorola and on the Kenwood, you will need to modify the radios to get TOR (PL) out of it and know where exactly to pick it off. If you get the Motorola radios try to get the high power radios and they will play nice at 20wt. Not in Continuous duty mode. Now if you drill out the 4 screw holes on the bottom and mill the bottom of the radio so then you can add a nice heat sink to it. Then they will operate in continuous mode but no more than 20wt. The first version was to mount a small fan on the bottom but ended up using the heat sink method and found it much more reliable. I have had more than 30+ full duplex links made out of these radios and have never had a unit fail. Take your time and plan your project and it will pay off if you do it the right way. Mike Mullarkey (K7PFJ) _ From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Peter Dakota Summerhawk Sent: Saturday, March 22, 2008 12:43 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Kenwood Repeater question I have a few of the TK-760's that I have been playing with the idea of thinking of using as a repeater, can this be done? And if so what would it take? Thanks Peter Dakota Summerhawk No virus found in this outgoing message. Checked by AVG. Version: 7.5.519 / Virus Database: 269.21.8/1338 - Release Date: 3/21/2008 5:52 PM
RE: [Repeater-Builder] Kenwood Repeater question
Ok the reason I asked is that we are thinking of putting up a repeater for special events. Would a couple of GM or GR300 work well for this? I know you cold not use them full duty 100% but they would work for temp special event repeaters? I have yet to find a couple of 2CH models that cover the ham bands. Anyone know of a source of the units? Thanks Peter Dakota Summerhawk -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Mike Mullarkey Sent: Saturday, March 22, 2008 1:46 PM To: Repeater-Builder@yahoogroups.com Subject: RE: [Repeater-Builder] Kenwood Repeater question Hi Peter, The TK-760 radios are great radios; however, I would post them on EBay and get a few Motorola SM-50 radios. All the connections are on the back on the Motorola and on the Kenwood, you will need to modify the radios to get TOR (PL) out of it and know where exactly to pick it off. If you get the Motorola radios try to get the high power radios and they will play nice at 20wt. Not in Continuous duty mode. Now if you drill out the 4 screw holes on the bottom and mill the bottom of the radio so then you can add a nice heat sink to it. Then they will operate in continuous mode but no more than 20wt. The first version was to mount a small fan on the bottom but ended up using the heat sink method and found it much more reliable. I have had more than 30+ full duplex links made out of these radios and have never had a unit fail. Take your time and plan your project and it will pay off if you do it the right way. Mike Mullarkey (K7PFJ) _ From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Peter Dakota Summerhawk Sent: Saturday, March 22, 2008 12:43 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Kenwood Repeater question I have a few of the TK-760’s that I have been playing with the idea of thinking of using as a repeater, can this be done? And if so what would it take? Thanks Peter Dakota Summerhawk No virus found in this outgoing message. Checked by AVG. Version: 7.5.519 / Virus Database: 269.21.8/1338 - Release Date: 3/21/2008 5:52 PM No virus found in this incoming message. Checked by AVG. Version: 7.5.519 / Virus Database: 269.21.8/1339 - Release Date: 3/22/2008 4:43 PM No virus found in this outgoing message. Checked by AVG. Version: 7.5.519 / Virus Database: 269.21.8/1339 - Release Date: 3/22/2008 4:43 PM
RE: [Repeater-Builder] Kenwood Repeater question
Peter, They will cover the ham bands and work very well at that. Mike -- Original message -- From: Peter Dakota Summerhawk [EMAIL PROTECTED] Ok the reason I asked is that we are thinking of putting up a repeater for special events. Would a couple of GM or GR300 work well for this? I know you cold not use them full duty 100% but they would work for temp special event repeaters? I have yet to find a couple of 2CH models that cover the ham bands. Anyone know of a source of the units? Thanks Peter Dakota Summerhawk -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Mike Mullarkey Sent: Saturday, March 22, 2008 1:46 PM To: Repeater-Builder@yahoogroups.com Subject: RE: [Repeater-Builder] Kenwood Repeater question Hi Peter, The TK-760 radios are great radios; however, I would post them on EBay and get a few Motorola SM-50 radios. All the connections are on the back on the Motorola and on the Kenwood, you will need to modify the radios to get TOR (PL) out of it and know where exactly to pick it off. If you get the Motorola radios try to get the high power radios and they will play nice at 20wt. Not in Continuous duty mode. Now if you drill out the 4 screw holes on the bottom and mill the bottom of the radio so then you can add a nice heat sink to it. Then they will operate in continuous mode but no more than 20wt. The first version was to mount a small fan on the bottom but ended up using the heat sink method and found it much more reliable. I have had more than 30+ full duplex links made out of these radios and have never had a unit fail. Take your time and plan your project and it will pay off if you do it the right way. Mike Mullarkey (K7PFJ) From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Peter Dakota Summerhawk Sent: Saturday, March 22, 2008 12:43 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Kenwood Repeater question I have a few of the TK-760s that I have been playing with the idea of thinking of using as a repeater, can this be done? And if so what would it take? Thanks Peter Dakota Summerhawk No virus found in this outgoing message. Checked by AVG. Version: 7.5.519 / Virus Database: 269.21.8/1338 - Release Date: 3/21/2008 5:52 PM No virus found in this incoming message. Checked by AVG. Version: 7.5.519 / Virus Database: 269.21.8/1339 - Release Date: 3/22/2008 4:43 PM No virus found in this outgoing message. Checked by AVG. Version: 7.5.519 / Virus Database: 269.21.8/1339 - Release Date: 3/22/2008 4:43 PM
