[Hammarlund] Unstable Oscillator adjustments in the HQ-180

[Richard Knoppow]

     I am not so sure.  There were certainly non-conductive and 
non-reactive tools.  I don't know when ceramics became available but its 
easy enough to make a tool using ceramic rod stock (available, do a 
google search).

On 2/12/2016 11:56 AM, manualman at juno.com wrote:
> I bet back in the "good old days" they didn't have/use ceramic
> screwdrivers when manufacturing and aligning this equipment and this
> stuff still turned out fine.
>
> Pete, wa2cwa
>
> On Fri, 12 Feb 2016 11:22:50 -0800 Richard Knoppow
> <1oldlens1 at ix.netcom.com> writes:
>>      At one time I had a long ceramic adjustment tool with slot
>> screwdriver ends. I may still have it but it disappeared after
>> moving
>> some stuff to storage.  It was very useful. For one thing it would
>> reach
>> into equipment that nothing else was quite satisfactory for such as
>> my
>> General Radio 1001 signal generator. If the tip broke I could grind
>> it
>> back to shape just as with a metal screwdriver.  It was also
>> non-reactive, i.e., could be used to adjust oscillators, etc,
>> without
>> pulling the frequency.
>>
>> On 2/12/2016 8:59 AM, k2cby wrote:
>>> The best investment I ever made was a set of ceramic screwdrivers.
>> They are
>>> a Japanese import, and you can find them on eBay. There are two
>> downsides:
>>> (1) The blades are small and spec'd in mm - read carefully before
>> you buy;
>>> and (2) the blades are very short - 1-1/2 inches or so (but you
>> might be
>>> able to cur away the handle and attach the blade to a longer
>> shaft).  The
>>> good thing is that the ceramic blades are very strong, don't chip
>> or break,
>>> and are of course completely transparent to electrical and
>> magnetic fields.
>>> Miles B. Anderson, K2CBY
>>> 16 Round Pond Ln.
>>> Sag Harbor, NY 11963
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-- 
Richard Knoppow
1oldlens1 at ix.netcom.com
WB6KBL