Michael Black wrote:

starman ) writes:

The Panasonic RF-3100 used a 'semi-synthesizer' design which generated
the MHZ ranges and combined these with conventional analog tuning within
each MHZ range.

But I don't see why you'd call that a "semi-synthesizer". If it's like
what's in the Galaxy and the HRO-500, it's a real synthesizer, but what
it is synthesizing is all the crystals 500KHz or 1MHz apart that are
needed for the first local oscillator. In something like the Collins R-390,
they have those crystals, but they can add up and take up space.

The fact that there is a tuneable oscillator to cover the 500 or 1000KHz
range does not make it any less of a synthesizer. It's merely not completely
digital tuning.

It was called 'semi-synthesized' because as you say, it was not fully
digital.


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