Hey Eric,
You have the manual on the TLD1692D PA Deck?
If so, good.
If not lemme know ...
Neil
Eric Lemmon wrote:
>
> Mike,
>
> If you're looking for a "commercial-grade" repeater, buy a TKR-740
> rather than a TKR-750, or a TKR-840 instead of a TKR-850.
>
> The Kenwood TKR-x50 repeaters are their economy, low-tier repeaters that
> do quite well at construction sites and non-demanding applications. As
> integrated, full-duplex transceivers, they are comparable to Motorola's
> GR-1225 repeaters. While they ARE offered commercially, they are of
> modest quality. Such repeaters have a number of useful features and are
> fairly reliable, but neither Kenwood nor Motorola is even suggesting
> that they are their "top-of-the-line" offerings. I wince at any
> suggestion that such repeaters are even considered for public-safety
> service.
>
> I have experience with both TKR-750 and TKR-740 repeaters, and there is
> NO comparison. The TKR-740K3 is a fantastic machine in Kenwood's
> high-tier line, light years ahead of the TKR-750K2, for 2m service. The
> TKR-740 is a 1U rack-mount unit that does NOT contain a power
> amplifier. It is essentially a full-duplex receiver and exciter that
> can output a drive signal between 100mW and 5W. Most of the
> public-safety agencies in my county use TKR-840 repeaters in a simulcast
> system, since it has a an input for a 10 MHz GPS reference signal. My
> current project is the marriage of a Kenwood TKR-740K3 repeater with a
> Motorola TLD1692D 100W power amplifier. It was an easy task to adjust
> the power output of the TKR-740 to 500mW (+26.99 dBm) to drive the PA,
> and there is a TXS output already in place to key the A- line input on
> the PA. Unfortunately, the TKR-740 receiver cannot properly respond to
> a Motorola reverse burst, but that is a deficiency that I can live
> with. (Geez, I wish Ham radios could encode and decode reverse burst!)
>
> It's true that a TKR-740K3 costs about $2,200 to the TKR-750K2's $1,100,
> and the former does not include a power amplifier, but the quality and
> feature differences are significant. Caveat Emptor!
>
> I personally prefer Motorola products, and the MTR2000 is my preference
> for an excellent repeater, but I have to give Kenwood credit for the
> excellent design and execution of the TKR-740 and TKR-840 repeaters.
>
> 73, Eric Lemmon WB6FLY
>
>
> Yahoo! Groups Links
>
>
>
>
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