[HBR] Coil Q and the Boonton 260

[Peter Bertini]

I would not recommend buying any vintage Q Meter that uses a thermocouple.
And many earlier models used a 45 type tube in the oscillator, which is
expensive
to replace.

The Heath QM-1 Q Meters are fairly cheap,  but they are limited to
measuring Q's
of 250 on the 1X scale.  For comparative tests, they are probably quite
usable for
the coil forms used in the HBR series.

Peter  K1ZJH

On Sun, Nov 30, 2014 at 12:54 PM, Brian Burns <brianburns1066 at gmail.com>
wrote:

> Hello Dan,
>
> I have a small budget for buying myself a Christmas present---ham related,
> of course! The Boonton 260 has looked keen, and Kees even has some
> instructions posted on refurbishing one. Would you say it's worth having on
> the test bench of a receiver building enthusiast? I recall on the glowbugs
> list there being some discussion about the difficulty of finding/repairing
> the thermocouple.
>
> ~ My guess is that the small dissipation factor of PVC will not affect the
> Q
> enough to measure.
>
> I'll bet that it can be measured, but that it's small enough that only a
> perfectionistic nut case like myself would care about it.
>
> My article of faith about making things is that the difference between good
> and excellent is about 5 percent. If you run around picking up 1 percents
> here and there, you can come up with an end product that is a real thrill
> to
> use, instead of being just pleasing. At least that makes a good excuse for
> the ridiculous lengths that I'm willing go to (;->)...
>
> Cheers,
>
> Brian
>
>
>
>
> ---
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