[Test-Equipment] HP-606A Calibration question

[Carl]

----- Original Message ----- 
From: "Barry" <n4buq at knology.net>
To: "Discussion of Electronic Test Equipment" 
<test-equipment at mailman.qth.net>
Sent: Wednesday, May 27, 2009 9:24 AM
Subject: Re: [Test-Equipment] HP-606A Calibration question


>
>> No, there is a unique solution, not multiple possibilities.  This can
>> be verified
>> by using a resonance calculator such as
>> http://www.daycounter.com/Calculators/LC-Resonance-Calculator.phtml
>> and entering some different values.
>
> I should have realized that.  I was thinking there was a random variable
> involved in this that would let the L and C "move" and stay in resonance,
> but that's not the case.  At any given position on the dial (and hence the
> variable cap), the other "variables" are fixed so the L and C must be
> specific values for resonance.  Thanks for straightening me out on that 
> one.
> I guess I was just grabbing at straws trying to arrive at a reason why 
> this
> thing is so far off calibration at it interior markings.
>
>>
>> John
>> KK6IL
>

You answered that last sentence yesterday John....someone or something 
loosened up the screws.

If you cant find some reference mark to start its going to take some time to 
find that sweet spot again.

At least it will be a wee bit easier than resyncing a R-390 gear train!

Carl
KM1H