Harris SX/Gates series RF oscillator board

Combo oscillator, complete

MP&A now offers a drop-in replacement for the original crystal-controlled RF oscillator board used in all of the SX series and the Gates series AM transmitters, including the 1 kW, 2.5 kW, and 5 kW units.  Our board keeps the same basic design but uses modern integrated circuit types for the divide-by-two/four counter and the RF pre-driver/buffer amp.  We still use all through-hole components for ease of field repair.  There is only one custom-made part on the board (a small RF drive transformer which we make in our shop); the rest of the parts are readily available from any of the major electronic parts houses.  Our board can use the crystal from your old board, or, if you don’t have a crystal on the frequency needed, can be supplied with our AM-band synthesizer daughterboard (see pix below) , or can be driven from an external RF source.

Price: $700 w/exchange; $800 outright

Combo oscillator making RF in an SX-1