[TenTec] Circuit breaker tripping excessively

[Dr. Gerald N. Johnson]

On Thu, 2006-12-07 at 03:26 -0500, Craig Roberts wrote:
> Ken Brown wrote: "Can you turn the TX power output down....?"
> 
> Yes -- and doing so will raise the threshold of circuit breaker tripping 
> as the power output -- and current draw -- is decreased.
> 
> The problem is frequency sensitive, however.  The higher the frequency, 
> the more readily the breaker trips.  The rig acts normally on 3.5, 7 and 
> 10 MHz bands, but the problem appears on the bands above and is 
> progressive and directly proportional to the frequency. In other words, 
> if I lower the power output so that the breaker doesn't trip on 20 
> meters, it'll still trip on 15, etc. In fact, it's very frequency 
> sensitive.  I can set the output so that the breaker stays engaged up to 
> -- say -- 29.5 MHz, but it'll still trip at 29.7. 
> 
> Thanks and 73,
> 
> Craig
> W3CRR
> 
Makes me wonder if some RF is leaking out the power wires of the
transceiver trip the electronic circuit breaker. A symptom of using
rolled paper capacitors where disc ceramics with short leads are needed
to be used for RF bypassing.
-- 
73, Jerry, K0CQ,
All content copyright Dr. Gerald N. Johnson, electrical engineer