Harris has the honor of owning the DX design; their competitors use
PDM in their SOTA MW transmitters.
John
K5PRO
The first of the Harris PDM types were the SX series.
The MW-1 was a transistor design using class A series modulation.
The MW-5 was a 4CX tube cathode modulated by a 4CX in class A
The MW-50 used a 4CX35,000 RF tube cathode modulated by a pulse width
modulated 4CX35,000 audio tube.
The SX-1 series was "upgraded" to a simpler GATES ONE branded Harris
Transmitter. Same with the GATES FIVE.
Don W4DNR
DonR
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