On Tue, 14 Jan 2014 15:48:24 -0000, "gareth"
wrote:
"Brian Reay" wrote in message
...

Scott's suggestion is a good one but I'd also suggest you
consider
checking that the PLL isn't simply on the limit of lock. It
doesn't sound
like you've checked the radio over since new and, with the ageing
of
components etc., it is quite possible things are not as they
should be.

I've done a quick Google and there are copies of the Service
Manual on the
internet and Kenwood manuals are pretty good. You should be able
to make
the adjustments.

73
Brian
M3OSN/G8OSN/W8OSN


Well done, Brian! See, you can make a positive and relevant
contribution to
discussion, without gratuitous and somewhat infantile sneers, in
this NG if
you really try.


Keep up the good work!

Ok Beanie, now its your turn.

--
73 de Frank Turner-Smith G3VKI - mine's a pint.

In article , Brian Reay wrote:

Scott's suggestion is a good one but I'd also suggest you consider
checking that the PLL isn't simply on the limit of lock. It doesn't
sound like you've checked the radio over since new and, with the ageing
of components etc., it is quite possible things are not as they should be.

I'd bet a nickel that this is precisely what is wrong... but you'll know
it when you see the PLL output it on the scope and it's bouncing around!

I've done a quick Google and there are copies of the Service Manual on
the internet and Kenwood manuals are pretty good. You should be able to
make the adjustments.

It's conceptually very different than working on an R-390 but to be honest
it's a whole lot easier.
--scott

--
"C'est un Nagra. C'est suisse, et tres, tres precis."

On 14/01/14 21:10, Scott Dorsey wrote:
In article , Brian Reay wrote:

Scott's suggestion is a good one but I'd also suggest you consider
checking that the PLL isn't simply on the limit of lock. It doesn't
sound like you've checked the radio over since new and, with the ageing
of components etc., it is quite possible things are not as they should be.

I'd bet a nickel that this is precisely what is wrong...

I've seen it, and fixed it, numerous times. One of these things you see
when you've been around a bit.

Following the PPL set up procedure normally cures it for another decade
or more, I've never had one back again.

73
Brian
G8OSN/W8OSN

"Brian Reay" wrote in message
...
On 14/01/14 09:58, coffelt2 wrote:
At first, I wasn't sure if it was an amplitude or frequency "warble".
Finally decided it was frequency. A little ragged, but affected both
receive and transmit.
Not much, only a few htz, but ragged and disconcerting after so many
years of faithful service................


since I considder myself a a repairman, what do I do next? 30 or 40
years of "freezemist" and " "heat gun" analysis, I still don't know my
way around this Kenwood TS-130. (my first transciever).

Replace all electrolytics and see what happens next?

HELP!

Old Chief Lynn, W7LTQ since 1948

Scott's suggestion is a good one but I'd also suggest you consider
checking that the PLL isn't simply on the limit of lock. It doesn't sound
like you've checked the radio over since new and, with the ageing of
components etc., it is quite possible things are not as they should be.

I've done a quick Google and there are copies of the Service Manual on the
internet and Kenwood manuals are pretty good. You should be able to make
the adjustments.

73
Brian
G8OSN/W8OSN

Thanks, everyone! I think looking at a PLL on the ragged edge of
falling out of lock is a red hot lead!
I've got a faded copy of the service manual gathering dust somewhere in
one
of these piles.
When someone mentioned PLL lock, it hit me right on the noggin.
I'd heard that ragged and irregular warble several times in the past,
when I did servicing, but that was many, many years ago... I'm sure that
will be the key. I'll report bank on this thread, but it might be a couple
of
weeks as the list of high priority "Honey Do's" is way behind schedule.
Thanks, Thanks, Thanks,

Old Chief Lynn, W7LTQ since 1948