[AMRadio] AM Usage with Linear AMPS


Brian Carling bcarling at cfl.rr.com
Tue Nov 23 07:29:01 EST 2004


On 22 Nov 2004 at 23:40, W7QHO at aol.com wrote:

> Yaesu's instructions were "don't hold key down for more than 10 sec on
> tune 
> up!"   Otherwise - POP!   Voice is a low duty cycle signal.   In SSB
> service 
> the average dissipation level can be kept within reasonable limits unless
> heavy 
> voice processing is involved.
> 

> > Then when you throttle that FT-101 back to 40 watts input on AM
> > and go to your 30% efficiency (if it is) then you are actually
> > putting only 20 watts carrier per tube which is SAFER.
> > 
> > Is that correct?
> > 
> > 
> Actually, on AM the FT-101 is throttled back to something like 100 W
> INPUT, 
> 25 - 30 W carrier OUTPUT.   Optional fan recommended.

My FT-101E performed very well for me on AM.
40 watts carrier input the best I remember.





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