Vic - As I recall from about a million years ago, when the hardware was
actually built, when you subtracted to get to 75m, the sideband
reversed. If not, the standard on 160-80-40 today would be USB - but it
isn't.
73, Steve WB6RSE
On Jun 17, 2004, at 4:59 PM, Vic Rosenthal wrote:
This is just wrong. Say you generate a USB signal at 9 MHz from a 1
KHz
audio tone. The (suppressed) carrier of the generated USB signal is at
9.000 MHz and the upper sideband is at 9.001 Mhz. Then mixing with a
5.0 MHz VFO would give sum frequencies of 14.000 and 14.001 MHz as well
as differences of 4.000 and 4.001 MHz. This is USB in both cases.
Of course, the VFO would tune in opposite directions.
Even a CW operator like me can add and subtract!
--
73,
Vic, K2VCO
Fresno CA
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