On Jun 1, 6:33 pm, Highland Ham
wrote:
wrote:
Where can I buy a ready built synstesised 1-30 Mhz vfo ???

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This is an NG for radio amateurs who are interested in building their
own equipment including equipment from kits NOT for buying ready
built equipment.

Well, a VFO is not a complete piece of equipment. It's something that
might be integrated into any number of different devices. Yeah, you
could hook one straight to an antenna and make a QRP transmitter, but
he didn't ask for a QRP transmitter, he asked for a VFO.

Saying that buying a VFO module is not in the spirit of homebrewing
may be right for the old-timers who used to make their own resistors
by baking carbon and build their own capacitors from mica sheet they
dug up in their backyard. Yes, I've met folks like that. But they're
remarkably rare.

Even getting away from the issues of lots of homebrewers being
uncomfortable with laying out a SMT DDS synth, doing a very well-done
temperature compensated LC tuned VFO is something that requires
considerable skill. In fact I've done both and found the DDS route to
be easier, if less satisfying in the end!

Even manufacturers of major reputation often buy their VFO's and
canned crystal oscillators from other sources.

Tim.