No Crime Scene

[Darwin D. Geiselbrecht]

In a message dated 2/3/01 20:13:33 PM Central Standard Time,
ranickel at MWCI.NET writes:

<< I think there's an error in communication here.  While it's true that the
 Crystal Pack was optional and not all SB-401s have these crystals
 installed - these are the HETERODYNE crystals, and those you listed:
     1. #404.206 3396.4 kHz USB crystal
     2. #404-205 3393.6 kHz  LSB crystal
 are the USB and LSB sideband generator crystals which have to be in every
 transmitter, regardless.  These are located on a small bracket under the
 chassis, while the heterodyne crystals are in the left front when you lift
 the lid.  Sorry Jerry, but you're going to need to find them before your 401
 does any talking. >>

Bob - to further clarify an already confusing situation, your statement is
true only if the SB-401 is not being used in conjunction with a companion RX
such as the SB-301.  In case where the RX is used in tranceive mode, the USB
and LSB signals normally come from the RX BFO.  That is why they were not
included except in the optional pack which made the SB-401 a "standalone" TX.
 The CW crystal was always included because it was used to tune the rig and
provide proper offset for CW.  In fact, the most annoying thing about a stock
401 is that the TX CW oscillator can be heard faintly in the RX.  Various
mods were developed to deal with this problem.

In summary a SB-401 was sold stock to run tranceive with the SB-3xx series
RX.  It will do that without the optional pack and the USB/LSB crystals.
Good luck Jerry, I have 4 sets of the Heath twins they run fine, some with
and some without the optional packs.

73 - Darwin K5DOA

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