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TKR 851 repeater for sale
开云体育I have a Kenwoot TKR 851 UHF repeater for sale. It is a 25W unit but set for 12 watts since I was told the last owner used it on an amp. Repeater is in good shape although I never put it on the air but I was told it works great. ? $600 shipped. ? Thanks ? Chad |
Chad
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Please contact me directly? Cenglody@.... I am interested incthe repeater. Do you have any pictures I would like a picture of the model # Chuck
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----- Original Message -----
From: Chad
Nelson
Sent: Monday, March 10, 2025 1:54 PM
Subject: [repeater-builder] TKR 851 repeater for sale I have a Kenwoot TKR 851 UHF repeater for sale. It is a 25W unit but set for 12 watts since I was told the last owner used it on an amp. Repeater is in good shape although I never put it on the air but I was told it works great. ? $600 shipped. ? Thanks ? Chad |
I understand that the 851 is a lower wattage unit. Other then that not sure what else differs. Les Keegan? N4LPK?
On Monday, March 10, 2025 at 06:42:54 PM EDT, Tiny Puppy via groups.io <butchb@...> wrote:
what is the difference between an 850 and an 851?
?
----- Original Message -----
From: Chad
Nelson
Sent: Monday, March 10, 2025 1:54 PM
Subject: [repeater-builder] TKR 851 repeater for sale I have a Kenwoot TKR 851 UHF repeater for sale. It is a 25W unit but set for 12 watts since I was told the last owner used it on an amp. Repeater is in good shape although I never put it on the air but I was told it works great. ? $600 shipped. ? Thanks ? Chad |
The 751/851 were originally the "European" versions but
JVCKenwood brought them into the US market a few years before the line
was discontinued.
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The ONLY difference between the 750/850 and the 751/851 was the maximum power - 25 watts but it was spec'd at continuous duty at this level (same as the 750/850). Also, there was never such a thing as a non Version2 751/851 as they shared most of the hardware and firmware with the Version 2 750/850. And they all use the KPG-91D software Hope this helps Ken At 03:42 PM 3/10/2025, you wrote: what is the difference between an 850 and an 851? |
There is a good comparison in the TKR section of RB. Basically the TKR851 is the same vintage as the TKR850 version 2 which gives a few improved? features that the TKR850 version (1) does not have, including different, improved? programming software.(KPG91)
?Very nice repeater with great repeat audio if you use the built in controller which only does CW ID , hang time and time out as well as TT control of repeat disable/ enable- just the very basic control.
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John
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On 03/10/2025 7:21 PM EDT Ken Arck AH6LE via groups.io <ken@...> wrote:
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There is a significant difference between the 750/850 and the 751/851 in the speced output power ranges. The 750 range is 25 - 50W, the 850 range is 25 - 40W, and the the 751/851 range is 1 - 25W. As Ken mentioned, the 750/850 are not speced to run 100% duty cycle above 25W, while the 751/851 will run 100% up to their max of 25W.
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Also, the service manuals are not identical. The receiver alignment is the same, but I suspect the transmitter section is different, however I have not verified that. I personally prefer the 751/851 when driving an amplifier due to the lower power output range. -- 73, Steve W9TN On 3/10/25 8:35 PM, John via groups.io wrote:
There is a good comparison in the TKR section of RB. Basically the TKR851 is the same vintage as the TKR850 version 2 which gives a few improved? features that the TKR850 version (1) does not have, including different, improved? programming software.(KPG91) |
开云体育
? 25 watts. ? TKR-850 is 50 watts intermittent, 25 watts continuous duty. ? TKR-851 is 25 watts continuous, period. ? Firmware-wise and feature-wise, TKR-851 is the equivalent of a “V2.0” TKR-850.? That is, there is no such thing as a non-V2 TKR-851.? Note that there is no “V1”; TKR-x50’s have either no version number, or they are “Ver 2.0”.? Additionally, the hyphenated number after the model number (e.g. TKR-750 -1) does not mean version 1; the hyphenated suffix is the bandsplit. ? 痴2’蝉 have a number of advantages over non-痴2’蝉, not all of which are important if you’re using an external control, but are generally more important if you’re not using an external controller. ? ??????????????????????????????????????????????????????????????????????????????? --- Jeff WN3A |
At 06:29 AM 3/11/2025, you wrote:
V2's have a number of advantages over non-V2's, not all of which are important if you're using an external control, but are generally more important if you're not using an external controller.<----I disagree. The pre Version 2's didn't have the improved PA design and it was known for PA failures. Not extremely common but they happened. Sure, you could retrofit the new PA board into a pre V2 but it wasn't all that common to do. The new PA is essentially bulletproof. Ken ------------------------------------------------------------------------------ President and CTO - Arcom Controllers Makers of repeater controllers and accessories Phone: (503) 678 6182 Authorized Dealers for Kenwood and Telewave. We offer complete turn-key repeater packages! "We don't just make 'em. We use 'em!" [] |
At 3/11/2025 08:16 AM, you wrote:
At 06:29 AM 3/11/2025, you wrote: The main reason why I'll only buy v2 TKRs. BTW I had a TKR-850 at full 40 W power for over a year: no problems - hardly even got warm.? Only removed from service because I happened to get a better radio to use (Tait TB8100).? A 2nd one has been also running 40 W for 1 1/2 years now in MA: same result. Bob NO6B |
I've had my TKR751 V2 running 40watts out for 2 years +...put an external fan on it to help but it barely gets warm even tied to the East Coast Reflector!? Chris WB5ITT? On Tue, Mar 11, 2025, 12:20 PM Bob Dengler via <no6b=[email protected]> wrote:
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Typo...TKR750 V2 ? On Tue, Mar 11, 2025, 12:22 PM Christopher Boone <setxtelecom@...> wrote:
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<----I disagree. The pre Version 2's didn't have the improved PAbulletproof. I was talking about the differences in firmware/features only and how they were less important if using an external controller...but yeah, there were issues with the first-gen V1 PA's. There were three revisions to the PA's in the UHF line and two on VHF if I remember right. --- Jeff WN3A |