[Repeater-Builder] Re: Kenwood Repeater question
Your are right about the tk-760 being only carrier squelch without mods. I did one of these a few years back and came up with a mod... but I'll have to look and see if I wrote it down. Folks should note the difference between the tk-760 and the tk-760g model... the "g" version being a different animal. To the many folks who emailed me about the previously mentioned (by me) book... it is a collection of notes, mods and sorted out horror stories I've written down as I trudged my way through years of two way radio work. As people request info I do scan and share a lot of it via the sonic and repeater builder web pages. Please check those pages first for a lot of great information already on the net. cheers, s. > 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
Re: [Repeater-Builder] Mastr II station cards.
On Mar 23, 2008, at 6:57 PM, Ralph Hogan wrote: > These two cards plus the 10VDC regulator card are all that are > needed to > make a GE Mastr II station into a repeater. They plug into the card > rack > above the RF fold down deck. The repeater audio card processes the > receiver > audio (de-emphasis) and mutes on no signal. It looks like there is > some sort > of decoder plugged into it. Perhaps someone else can ID that part of > it. > There is normally an optional PL High pass filter that plugs into it > to > strip user sub-audible PL tones. The repeater control card keys the > transmitter upon reception of a rx signal and does a hang timer. The > enable/disable switch turns the repeat function on and off. However > the > control card has no CWID provision. Yeah, that's a versatone old-style decoder (could be an encoder I suppose, never seen one mounted on the control card like that) for one tone only... you can pull the little module out and read the tone on it. Most Amateurs want more "features" on their repeater controllers, and also want CW ID's (which the GE repeater configuration does NOT do), so we pull all of the cards except for the 10 V Regulator Card (far right of the station) out of the station shelf completely and wire an external controller to the station. There's also repeater controllers that have more features than the GE stock equipment from Pion and Simon which are getting good reviews, that plug directly into a GE MASTR II station. http://www.pionsimon.com/ -- Nate Duehr [EMAIL PROTECTED]
RE: [Repeater-Builder] Mastr II station cards.
These two cards plus the 10VDC regulator card are all that are needed to make a GE Mastr II station into a repeater. They plug into the card rack above the RF fold down deck. The repeater audio card processes the receiver audio (de-emphasis) and mutes on no signal. It looks like there is some sort of decoder plugged into it. Perhaps someone else can ID that part of it. There is normally an optional PL High pass filter that plugs into it to strip user sub-audible PL tones. The repeater control card keys the transmitter upon reception of a rx signal and does a hang timer. The enable/disable switch turns the repeat function on and off. However the control card has no CWID provision. Did the front of that say MARC V, it is hard to read? That would make it a piece of their early 800 trunk system. Ralph W4XE -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of NORM KNAPP Sent: Sunday, March 23, 2008 7:06 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Mastr II station cards. Can someone tell me what these cards are for? TNX es 73 N5NPO Norman Knapp Yahoo! Groups Links
Re: [Repeater-Builder] Need help identifying VHF antenna
It was made by Signals/Cushcraft. Don't know much more. Chuck WB2EDV - Original Message - From: "NORM KNAPP" <[EMAIL PROTECTED]> To: Sent: Sunday, March 23, 2008 7:48 PM Subject: [Repeater-Builder] Need help identifying VHF antenna > Hi Guys, > I got this VHF antenna. Looks kinda like a VHF DB-404. Has 4 loops on the > mast height of a DB-222. > If you know what it is and what the specs are, please let me know. I want > to use it as a repeater antenna on 146.805/146.205. The SWR on 146.805 is > 1.5:1. > Thanks for any help. > 73 de N5NPO > Norman Knapp > > > > > > Yahoo! Groups Links > > > >
Re: [Repeater-Builder] Optimum Antenna spacing from tower.
John, Did you get an ansewr to your question? Steve / K6SCA John Everson <[EMAIL PROTECTED]> wrote: Hello to the group. Does anyone know what the optimum spacing away from an 18" faced tower is to minimize pattern distortion? I have to side mount two DB 224 antennas and I would like to try to keep the patterns as close to omni as possible. I will also have to side mount a 224 Mhz collinear and I was wondering if the spacing will differ between the dipole style antenna and the collinear styles. I used to have a pattern modeling program on a disc just for this type of thing and it seems to be missing. Any comments are appreciated. John - Never miss a thing. Make Yahoo your homepage.
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
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] WTB - GE Mastr II Cabinets
Hi, Nate. The Mastr II series cabinets had several sizes. The deskmate series is 30 inches tall, and the next size is the 44 inch tall cabinet then of course the one all of us love is the 6 foot tall cabinet. Those are real fun to move from site to site. Happy Easter everyone. Butch, KE7FEL/r To: [EMAIL PROTECTED]: [EMAIL PROTECTED]: Sun, 23 Mar 2008 00:02:15 -0600Subject: Re: [Repeater-Builder] WTB - GE Mastr II Cabinets On Mar 22, 2008, at 10:11 PM, Tony L. wrote:> Need used GE Mastr II cabinets with front & rear locking doors.>> Contact off list, or at: n2fdu at arrl dot net.>> Thanks.I don't have any to spare, and judging by the 2 call, you wouldn't want to drive to Denver to get them anyway...But your question sparked another question I'm sure some are thinking:What size?There were lockable "desktop" racks, medium racks (half height) and tall racks for the MASTR II series, I believe.I don't have easy access to my Station LBI's right at the moment and the book that shows all the combinations, but there was definitely more than one size.I have a half-height (4'?) here that has lockable doors, and I've seen full height(7'?) high ones at sites with lockable doors.The half-height I have here is already earmarked for a project, and just for fun, I'll mention that it has a really big bullet hole in it.Never store your cabinets outside in rural areas, people are dumb and bored.(GRIN -- I ended up storing it for that reason... people taking pot shots at it, so the owner said, "Get over here and get it into your garage.")--Nate Duehr, [EMAIL PROTECTED]
[Repeater-Builder] Re: Kenwood Repeater question
Hello again everyone... Kenwood Mobile Radios of the earlier vintage have many of the desired logic and audio sources available inside the radio. Most times one need only buy the simple flying lead kit to extend those line out to the then added 15 pin connector and matching plug (supplied with the kit). Most Kenwood Radios up toward the newer tk-7180 series make external connections through the wire lead (with matching plug installed) kit. In most cases the kit is added by removing the radio cover and simply plugging it in to the matching sockets already on the circuit board. Working from memory, the entire kit with all connectors, pins, jacks and plugs ready to rock and roll should still be under $20 Probably made more sense at the time to Kenwood versus having same model radios with 5 pin and 16 pin connectors and corresponding different internal logic/IO boards. I have repeaters made from Kenwood Mobiles... Just like most other brands you should probably reduce the transmit power for long duty cycle operations. In most traditional one business user repeat operations one doesn't always have to reduce the tx power that much for casual (duty cycle) operation. I have a book of notes about converting most radios to repeater operation. If you have a vintage Kenwood Radio... it's probably not a problem to help you out as time allows. Email me direct if you need more information about a specific Kenwood radio model. cheers, skipp skipp025 at yahoo.com (yeah it's the crazy busy time of year again... ) > "Mike Mullarkey" <[EMAIL PROTECTED]> wrote: > 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] Motorola Channel Elements
Eric, Yes the 1086 and 1088 are spec'd by Mot for the MSR2000. My MSR2000 has them directly from Mot. This is not someone using them from a Mitrek, but made up for the MSR. 73, ron, n9ee/r >From: Eric Grabowski <[EMAIL PROTECTED]> >Date: 2008/03/22 Sat PM 07:43:55 CDT >To: Repeater-Builder@yahoogroups.com >Subject: [Repeater-Builder] Motorola Channel Elements > >Were Motorola KXN1086 and KXN1088 channel elements >used in any other product line besides the Mitrek? > >Eric, KH6CQ > >__ >Never miss a thing. Make Yahoo your home page. >http://www.yahoo.com/r/hs > > Ron Wright, N9EE 727-376-6575 MICRO COMPUTER CONCEPTS Owner 146.64 repeater Tampa Bay, FL No tone, all are welcome.
