Perhaps I was a bit too optimistic about THAT aspect of the C21 design. Your
question prompted me to rethink that.
While the 5.0 to 5.5 MHz IF in the C21 does offer the three advantages of added
selectivity of a 500 KHz wide IF, hum reduction and freedom from the presence
of an on-frequency local oscillator, the method of using the PTO as a BFO does
still allow the ambiguous sideband tuning issue.
Sorry for the error. I do make them from time to time, especially late at night.
> On Dec 30, 2017, at 12:56 PM, w0ep <firstname.lastname@example.org> wrote:
> I must be misunderstanding..
> My C21 hears both sidebands all the time.
> On 12/29/2017 10:47 PM, Dukes HiFi wrote:
>> Its advantage over direct conversion is freedom from hum and images (wrong
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