[Central-Electronics] CE20 Documentation

[k6jek]

I've used my 100V in conversations with guys on modern stuff.  I gave up on the 100V VFO and plugged in an external DDS VFO.  This works!  The two (count em, 1,2) oscillators in the 100V seem to be stable enough that I get no complaints and that baby has wonderful audio.  I did have to fight a long, hard fight to get the opposite sideband suppression up to snuff but now I happily use the 100V talking with guys on their 60 year newer equipment.

I tried the same thing with the 20A after discovering that the CE-458 VFO drifts quite a bit if you don't leave it on all the time.  I have a huff and puff kit which I have vague plans to install.  In the meantime, I figured I would be fine with the external DDS based VFO.  No!  Unlike the 100V, the internal oscillator (only 1) is a drifter.  Too bad.  The 20A has one huge advantage over the 100V, though.  It doesn't weigh 70 pounds

Thanks for the link. I didn't know about it. The wiring diagram like the one on that site was a great help getting mine on the air.  CE made a lot of changes when the 20A had been out for just three months.  Well mine is an early one and the schematics you find everywhere don't match it.   I was puzzled until I saw the wiring diagram.

Jon

PS: The Lakeshore VFO's are rare, aren't they.


On Aug 27, 2011, at 5:26 AM, Jim Candela wrote:

> 
> 
> The following link has some great information on the 20A. So check it out and download any files that you might want to keep.
> 
> 
> http://frank.pocnet.net/instruments/CentralElectronics/20A/20A.html
> 
> 
> Jim
> WD5JKO
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