[Amps] MRF150 based 1500 watt amp design/cost

[Pete Smith]

At 09:10 PM 3/5/03 -0600, Phil Clements wrote:
>There must be at least 5 low pass filters to cover 1.8-30 mhz.
>No big deal, just a lot of torroids, large RF rated caps, and 1500
>watt relays to switch them in and out. The filter assy. is the largest
>board in my Henry SS-750.


As long as we're just designing this thing on paper, why wouldn't it make 
sense to design for a 50-ohm output impedance, forget the low pass filters, 
and instead include a low-pass-type autotuner permanently in line as part 
of the amplifier?  Isn't this essentially what Acom does in the 2000A, 
although with tubes?

73, Pete N4ZR
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