[Heath] SB-1000 high swr on transmit.

[van wd8aam]

Have you tried it with a GOOD Dummy Load?
wd8aam

At 20:33 1/24/2011, you wrote:
>On 24 Jan 2011 at 11:07, Jan Sluchak wrote:
>
> >
> >     Hello to the group. I am putting my SB-1000 back on line after a
> >     few years of no place to operate. With nothing having been done to
> >     the amp, I notice that when the amp is on standby, my swr into my
> >     steppir on 40 meters is 1.1. When I put the amp in line and go to
> >     tune, no better than 9:1 to 12:1. I am driving with Elecraft K3
> >     and keying with the elecrafts keyer. Could the tube have gone bad
> >     from sitting?
>
>Not likely, although some component could have failed.
>
> > Thank you for any suggestions to start looking. Jan
> >     N6YV Reno, NV
>
>The first question I would have is...where is your SWR meter connected?
>
>Is it between the amp and the antenna, or between the K3 and the amp?
>
>If the SWR meter is between the K3 and the amp, then the problem is within
>the amp, most likely in the input circuitry, but it is also possible 
>that you have
>a bad cable or cable connectors, or the antenna switching relay has bad or
>corroded contacts so that when it is activated, it isn't actually 
>connecting your
>K3 to the amp.
>
>If it is between the amp and the antenna, then the problem is something
>else, like perhaps a bad coax fitting somewhere.
>
>Secondly, in CW, is anything getting hot when it shouldn't?
>
>Thirdly, with the amp activated, what is your power input? Can you tune the
>amp to resonance?
>
>It sounds to me as though when you activate the amp, there is an open
>circuit somewhere between the K3 and the amp.
>
>Ken Gordon W7EKB
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