[Amps] 144MHz Linear

[Evert Bakker (PA2KW)]

I'm running a pair of 4CX250B at 1.3 kW. Living in a crowded area, No
complaints whatsoever (except the strength which was the purpose of the
exercise).
Running WSJT @ 800 W. This amp is in service for more the 15 years and never
replaced the tubes.

A good design (YU1AW) and HIGH voltage on the anode off you go......

73's, Evert PA2KW
 

-----Original Message-----
From: amps-bounces at contesting.com [mailto:amps-bounces at contesting.com] On
Behalf Of John Lemay
Sent: Monday, February 01, 2010 21:24
To: 'Adrian Rees'; amps at contesting.com
Subject: Re: [Amps] 144MHz Linear

Hi Adrian

I sure hope no-one local to me buys that amp kit !

"2 x 4CX250B", "1kW" and "linear" don't go together. May be Ok to 600w, but
that's about it.

Good luck.

John G4ZTR


-----Original Message-----
From: amps-bounces at contesting.com [mailto:amps-bounces at contesting.com] On
Behalf Of Adrian Rees
Sent: 01 February 2010 12:32
To: amps at contesting.com
Subject: [Amps] 144MHz Linear

Hello all
 
*****Please reply off list*****
 
I have a stock of parts, suffcient to build a 1Kw 144MHz linear amplifier.
The chassis, case and power supply have already been build, leaving just the
component assembly on the RF deck to be completed. Included is a pair of
brand new, sealed 4CX250B's and  about 10 other 4CX250B's, lots of sockets,
spare parts, transformers etc etc.The chassis (RF Deck)  is made from Copper
Plate. PSU is capable of 2.1Kv or 2.8Kv at 1Amp. Also included is a metal
case with panel.
 
I also have full assembly instructions to build the RF Deck and test the
linear. PSU instructions & design docs also included. Just supply time &
solder.
 
If anyone is interested, please email me off list.
 
Location: Wales, UK
 
Best Regards
 
Adrian MW1LCR
 
*****Please reply off list*****
 
 
 
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