Amps
[Top] [All Lists]

[Amps] MRF150 based 1500 watt amp design/cost

To: <amps@contesting.com>
Subject: [Amps] MRF150 based 1500 watt amp design/cost
From: n4zr at contesting.com (Pete Smith)
Date: Thu Mar 6 03:47:38 2003
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
The World HF Contest Station Database was updated 23 Feb 03.
Are you current? www.pvrc.org/wcsd/wcsdsearch.htm



<Prev in Thread] Current Thread [Next in Thread>