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Re: [Amps] ARRL Amplifier book

To: "Pete Smith" <n4zr@contesting.com>
Subject: Re: [Amps] ARRL Amplifier book
From: "Bill Coleman N2BC" <n2bc@stny.rr.com>
Date: Sun, 5 Sep 2004 18:22:48 -0400
List-post: <mailto:amps@contesting.com>
Pete, the Harris RF-110A / RF-124 meets most of those requirements. With careful shopping, one could have 3 or 4 (or more) Harris setups for the price of one new Alpha 87.

It covers 2 to 30mHz in 19 bands, no tuning. The Harris can easily be put on 160M with a minor tweak. It runs a pair of 4CX1500s driven by a pair of 8122s. Requires about 100mW drive. It can be driven from most rigs transverter output thru a 1W broadband amp or from a 100W rig thru a 30dB attenuator (readily available on the e-place).

The negatives are it's noise (an 11,000RPM fan), and size (~300 pounds in two 10.5" rack mountable cabinets). It's rated at 1KW output, will easily do more but I wouldn't want to have to fix a toasted tank assembly.

The pluses are it's easy to control it remotely with a simple home-brew control head - move the noisy beast into the next room. It's quite serviceable, slide-out drawer, etc.

I have some words and pix of mine on my home page: http://home.stny.rr.com/n2bc/

73, Bill N2BC


----- Original Message ----- From: "Pete Smith" <n4zr@contesting.com>
To: "Phil Clements" <philk5pc@tyler.net>; "Vic Rosenthal" <vic@rakefet.com>; "RICHARD GEORGE" <k6kwq@msn.com>
Cc: "amps" <amps@contesting.com>
Sent: Sunday, September 05, 2004 5:14 PM
Subject: Re: [Amps] ARRL Amplifier book





Which raises an interesting question... If you were shopping the current surplus market for an amplifier that could be readily modified to cover the amateur bands 1.9-30 MHz, with <100 watts drive and cool 1.5 KW output, what would it be? I'm presuming that desiderata would be as-built input and tank circuits good down to at least 2 MHz and an AC power supply. What would you start with and what would you expect to pay for a clean unit?


73, Pete N4ZR
The World HF Contest Station Database
was updated on August 2, 2004
2753 contest stations at
www.pvrc.org/WCSD/WCSDsearch.htm


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