[ARC5] Crystal tester.

[Bill Cromwell]

Hi,

I have a bucket of FT-243 xtals here and my xtal tester is labeled 
"Knight T-60". In Michigan Hillbilly fashion I made some adapters for 
other xtal types. I works well enough for my purposes. I have used it 
against various receiver dials, an LM, and a digital frequency meter.

Maybe your is labeled Heath DX-60 or HW16 or something similar.

73,

Bill  KU8H

On 06/11/2016 08:41 PM, Richard Knoppow wrote:
>    In the article I linked Virgil Bottom writes about the testers 
> developed for crystals. There were really no standards before the war. 
> The first tester was very elaborate.
>    The Millen GDO works like a charm for testing crystals plus the 
> best load capacitance can be determined by measuring the exact 
> frequency on a counter and also looking at maximum current on the 
> meter. The frequency dial has a logging scale which can be calibrated 
> for capacitance.
>    Some GDOs will not work, for instance the AN/APM-10 which has other 
> stuff in the plug ins beside the coil. I suspect many work as well as 
> the Millen.
>
> On 6/11/2016 4:58 PM, Rich Post wrote:
>> The military used this one (TS-39B/ TSM-1) and likely some other crystal
>> testers
>> <http://www.ohio.edu/people/postr/bapix/TS-39B.htm>
>>
>> You can also simply plug a crystal into a grid dip meter in place of a
>> coil and check the freq on a counter.
>>
>> A third method is shown in the third picture down, using a sig
>> generator, scope and counter.
>> <http://www.ohio.edu/people/postr/bapix/SigGenFun.htm>
>>
>> Rich KB8TAD
>>
>> On Sat, Jun 11, 2016 at 6:56 PM, Kenneth G. Gordon
>> <kgordon2006 at frontier.com <mailto:kgordon2006 at frontier.com>> wrote:
>>
>>     __
>>     Wayne:
>>
>>     The military had a good crystal-test unit, but I cannot remember its
>>     nomenclature.
>>
>>     --  --
>>
>>     Ken W7EKB
>>
>>     <http://www.qsl.net/donate.html>
>>
>>
>>
>>
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