Posting ID : A1068473023
Date Posted : 2015-08-18
Category : Electronics By Owner
Heath SB-221 Amateur Radio (Ham) HF Linear Amplifier For Sale:
The SB-221 uses a pair of 3-500 tubes to deliver close to legal
limit output on the HF ham bands. It is a proven design that has
been copied by many others.
This SB-221 is a late one, with plug in transformer and "redish"
meters. It was assembled in 1982, and lightly used about 10 years.
It has been in storage since that time, until recent updates, and
use on the air.
It works fine and looks very close to new, with no known defects.
In addition, it has recently had most of the Harbach improvements
added including a new set of filter capacitors with improved
equalizing/bleeder resistors, new metering/rectifier board, "Soft
Key" board to reduce keying voltages and currents, glitch resistor,
protective diodes, new HV metering resistors, and more. All metering
and equalizing resistors are precision 1% resistors.
This amp produces in the vicinity of 1200 Watts output, depending on
This is a really nice amp. Please e-mail for more details.
With paper work for $900.