Heathkit crystal calibrator questions

[Joe Y]

Hello Malcolm,
I built the HRA 10-1 calibrator from scratch for use
in my HQ 129X and it seems to work very well. The
circuitry is quite simple and the unit uses a single
6BA6 tube. The trickiest part is locating a 100KC xtal
I was able to get mine from ebay for abt 5 bucks incl
the shipping, there was a fellow on there who was
auctioning many of them, the rest of the parts came
from my junk box. You can download the manual and
schematic for free from: http://bama.sbc.edu/
Hope this helps,
Joe
--- Malcolm Leonard <radiorepair at MINDSPRING.COM>
wrote:
> Did Heath make more than one model of these?How good
> are they?is the circuitry simple enough that just
> building one from scratch(if I can get the
> schematic) is a practical alternative to buying one
> on eBay?
> Thanks,
> Malcolm Leonard
>
>
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