[Boatanchors] BC-342 dial question.

[WA5CAB at cs.com]

Phil,

Probably some who might have answered are in Dayton this weekend. Short 
answer is that I don't know. I just had a look at a parts BC-312 and also the 
overhaul manual. The manual didn't mention it and if there is any way, I can't spot 
it. Most of the drive has the gear hubs drilled and pinned to the shafts in 
addition to the set screws.

Zero on the dial is slightly below the minimum frequencies. My suggestion 
before you even think of tearing into it is to calibrate the local oscillator at 
the high check points per the manual and then check it at the low ones. 
According to the overhaul manual, the best you can expect on the lowest band is +/- 
5 KC, and +/- 10 KC is max allowable. If it falls within this range, I 
wouldn't touch it. Note that there is no external adjustment on the lower ends of the 
ranges. Adjustment requires bending a loop or wire in each coil. I did a 
BC-344 once and believe me, you don't want to do it if you can avoid it.

In a message dated 5/15/2004 9:34:25 AM Central Daylight Time, 
beaconeer at elite.net writes: 
> I posted the following to the Mil-Surplus list but didn't get an answer to
> the question. Maybe here?
> 
> >One thing I've noticed about this BC-342 is that the main dial doesn't go
> "quite" to Zero at the low end of the tuning range, almost but not quite.
> Along with this, most of the bands appear to be off by roughly the same
> amount (physically, not actual frequency). Now, I know that alignment and
> calibration can probably bring the frequencies in place on the dial, except
> that by not going to zero there will always be an error at the bottom end.
> 
> Is there a fairly simple way to reposition that dial without total
> disassembly of the gear mechanism? I don't fancy doing a total teardown of
> the gear mechanism.<


Robert & Susan Downs - Houston
<http://www.wa5cab.com> (Web Store)
<wa5cab at cs.com> (Primary email)
<wa5cab at houston.rr.com> (Backup email)
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