[Kenwood] TS-2000 HF/VHF 2SC1972 base voltage?
Kenneth G. Gordon
kgordon2006 at frontier.com
Fri Jul 25 15:06:56 EDT 2014
On 25 Jul 2014 at 14:08, Roger Shultz wrote:
> Hi Ken,
>
> Power is as it should be now.
Then why worry about the small things? ;-)
> I hope the problem is just the DVM and RF
> error.
Well, one way you can check this that MIGHT work is to connect a 2.5 mH
RF choke in series with the input test lead of your DVM, but make the
connections as short as possible. The RF choke should block any RF,
leaving the DC available, although due to the series resistance of the choke,
it MAY be a bit lower than what is actually there.
Building a real RF probe is easy, if you are interested in the RF levels at that
point. There are loads of plans on the net for this.
> I have no idea what Kenwood might have used to make the original measurement
> though it is likely in the Service Manual so that is good to check. Great idea.
Although the test instruments required are often listed in the beginning of the
section on alignment in many service manuals, not all are done that way.
Even so, it is a good idea to check.
Again, good luck. It sounds as though you have fixed the original problem,
anyway. The rest is pretty much an "academic exercise" to satisfy your
curiousity.
Ken W7EKB
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