Re: Variable power control
Arv Evans
John G0UCP Agreed. Some just can't have enough knobs and some percentage of those "must have them turned to the right-most position". There is also the problem of change in operating parameters when power levels are changed without a good idea of what the effect might be. Attenuators for QRP power levels are inexpensive and easy to build. Add a switch or relay and they allow the exciter to run at design specifications and still have controllable output. Using an attenuator on the input of a power booster helps insure that the impedances are matched (maybe!) between exciter and linear amp. HAPPY NEW YEAR! Arv K7HKL _._
On Mon, Jan 1, 2018 at 12:54 PM, John Seager <jseager2009@...> wrote:
|
|