SB401 xtal Pack

[Bob Bruner WB4TAJ]

I had an SB-401/ SB-303 combination for many years. If you run the radio with
any of the matching Heathkit receivers as a transceiver, then you only need
the CW carrier crystal in the transmitter.  It gets the USB and LSB carrier
frequencies from the receiver, as well as the HFO oscillator signal.  The LMO
signal, is of course switch selectable between the two units.  If you are
going to run the SB-401 as a stand-alone transmitter, you must have all 11
crystals in place.  The CW xtal, plus to the two sideband crystals, plus the
8 HFO band set crystals.  The accessory xtal pack had 10 crystals in it, the
CW xtal comes with the transmitter.
73
de Bob
WB4TAJ/9

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