[Wswss] FS 600w 222/432 cavity amp

[kr7o at vhfdx.com]

I have for sale an amplifier based on the military AM-1565 cavity 
(NOTE:  this is not an AM-6154/5 amp).  This cavity covers from 222-432 Mhz 
and runs a pair of 4cx250K tubes.  The 4cx250K is the coaxial base version 
of the 4cx250 rated for UHF.  The modification documents spec this cavity 
at 580w output with 60w drive.  I do not have enough drive to test for full 
output.  I am getting 250w on 222 with 25w drive which seems in line with 
the 10db rated gain.  I tested it once to see if it would tune to 432 and 
it did, but it did not produce as much output as 222 (I don't remember what 
the output was), may require some work to produce full output at 432.  This 
amp is a self contained unit, including T/R relays, and runs off of 
110v.  It is setup for a 19" rack mount, but weighs about 100# so it will 
take some muscle to get in a rack.  The top of the amp is open and HV is 
fully exposed, so you will need to mount it safely in your 
location.  Includes all modification information and hand written notes I 
received when I purchased this amp.

I have used this for several years (mostly in contests), but have upgraded 
to 8877 amps on 222 and 432, so I no longer have use for this amp.


$450, pickup in Madera, CA, or I can deliver to the 50 MHz and Up picnic in 
a couple weeks.  NO SHIPPING.



73, Robert KR7O/YB2ARO, DM07ba/OI52ee  (ex.  N7STU)
kr7o at vhfdx.com

www.vhfdx.com (KR7O/YB2ARO Weak signal, EME, microwave Site)