> "Eric Lemmon" <[EMAIL PROTECTED]> wrote:
> Dave,
> A couple of years ago, I set up a TKR-750K1 repeater for a
> local Amateur Radio club. The club bought the repeater without
> realizing that the K1 version is for 146-174 MHz, while the K2
> version is for 136-150 MHz. This was a moot point, since the
> repeater pair was at 147 MHz. The K1 version does not perform
> well in the 144-146 MHz portion of the 2m band.
The cute trick was to receive a K2 Repeater with the K1 Software
and spend the extra time to figure out "what's up with that?"
The K1 version repeater takes the kpg-66d software. The K2 version
repeater takes kpg-91d software. The software does not interchange
between repeater models/versions.
> The repeater comes set up for a 3 MHz segment in the middle
> of its range, so the receiver must be retuned for optimum
> sensitivity on the desired receive frequency. Coils L2, L3,
> L5, L6, and L7 should be peaked for maximum sensitivity on your
> receive frequency at 12 dB SINAD, rather than stagger-tuned as
> the service manual suggests.
Peaked vs Stagger:
Depends on the application really... for not a lot of money
I and other Kenwood Dealers can order new Repeaters already set
up by Kenwood on the customers frequencies with an option labor
code. It's not a lot of money really... Or I/we as service
shops can align it for the customer and check it for proper
operation before the installation.
> If you haven't already done so, get the service manual
> B51-8556-10. It's available from Pacific Coast Parts for
> about $25.
Or a really nice guy (me) would send you a pdf file copy of it
free just for asking. Email me direct if you need one...
> While you have the radio open, you should set the jumpers
> for backup battery charging and/or fan operation as you wish.
True, but the jumpers also depend on the power supply used. One
combination of switching power supply with the battery backup
turned on - no battery connected can generate some unwanted
noise... so I would suggest setting the option when you actually
need it.
> Due to a computer crash, I lost my copy of the TKR-750
> programming file and do not have a data file to send to you.
> However, I do recall that the software has many sub-menus that
> are not readily apparent but are crucial to interfacing with
> external equipment.
Yep, first read the repeater as received and save the contents
as the "default" program so you can always restore the repeater
to square one if the need ever happens.
> It is important to disable many of the default functions in
> the native controller, when an external controller is used.
> Otherwise, the internal Morse identifier will compete with an
> outboard identifier. The software documentation is not very
> helpful in understanding the extensive capabilities of the
> internal controller.
True, but the Dealer Selling the Repeater should be able to
supply the answer to most of your questions. If not, we have
the resource of the Kenwood Technical folks to quickly find
the answer. Much to my surprise I've never been able to stump
them with a serious technical question the few times I've had
to call.
> 73, Eric Lemmon WB6FLY
cheers Eric,
skipp
skipp025 at yahoo.com
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