[ARC5] 10 meter BC-454 - instability possibly found
John Hutchins
jphutch60bj at gmail.com
Wed Feb 13 07:10:32 EST 2013
Ken -
May I suggest this, in the BC-348 IF cans they use spring steel wire,
grounded, to apply pressure to the ferrite core adjustment screw. I am
thinking of a dipper pin to test this out as a possible solution. IF
this works the I ma sure someone on the list may know of a source for
the spring metal needed to make a retainer spring? Many thanks for the
updates on your progress, I have learned a lot.
Hutch
On 2/12/2013 10:59 PM, Kenneth G. Gordon wrote:
> On 12 Feb 2013 at 22:30, Robert Eleazer wrote:
>
>> I saw in a GE Voice Commander where they took rubber bands, cut them
>> and stretched them lengthwise through the coil form, screwing the slug
>> in with the rubber band running from top to bottom. It did not follow
>> the screw threads but rather ran across them at right angles.
> Yes. That was what I was thinking of, in fact, for this thing. I decided against
> it here because to my mind it would be too "springy".
>
> Ken W7EkB
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