This is the Raytheon Section of
The Broadcast Archive
Barry Mishkind - The Eclectic Engineer
Last updated: 9/1/08
The Raytheon RA1000
Designed in the 1940s, the RA1000 came before "value
engineering." It was over-designed and, as a result, was an excellent
The Raytheon RA1000 had conventional class B push-pull audio,
modulating push-pull RF stages. While it was a quad 833 rig, was completely
different in design from the other 1 kW transmitters of the time which used
parallel RF tubes, with lower plate impedance as the result.
Instead of having 807s driving the 833 grids, the RA1000 used
813s. The RF circuit was all symmetrical with a variometer for the output
link to coax.
is being rebuilt in Boling, Texas