Model 5O0 is the standard Transmaster.
Model 600 incorporates TVI Elimination.
Models 500S & 600S have in addition a built-in
"Clamp" tube Modulator plus a switching arrangement
whereby the Power Amplifier may be turned off to
tune-up or zero-beat another signal without blocking
the receiver or causing unnecessary interference
to other stations on the frequency. This switch also
provides a means for switching from phone to C. W.
All units are designed to operate on 160, 80, 40,
20, 15, and 10 meter bands.
Crystal or VF0 operation is feasable on all bands.
Installation of these units is extremely simple,
requiring only an antenna, key and 115 volts 60 cycles
for all Models, plus & high impedance microphone for
Models 500S & 600S. The Power Amplifier operates
straight through on all bands.