[ARC5] ARC-5 Crystal Question

Henry Mei'l's meils at get2net.dk
Fri Aug 13 01:40:48 EDT 2010


Hi Dennis,

And what freq. did it oscillate at ;0) - just kidding - but there is a 
slight difference in whether xtals 'swing' in parallel or series mode, 
right?
If I had a gdo at that time, I might have done the same -- good idea.
(Just to be trivial: was the xtal marked Kc or kc or just 8870? - we had a 
big discussion on the Radio Officer's reflector about proper abbreviations.
I could just take a peek into my newly acquired ARC-5s - but this is 
easier.)

73, Henry OZ1UF

----- Original Message ----- 
From: "Dennis Monticelli" <dennis.monticelli at gmail.com>
To: "Discussion of AN/ARC-5 military radio equipment." 
<arc5 at mailman.qth.net>
Cc: <jfor at quik.com>
Sent: Friday, August 13, 2010 7:00 AM
Subject: Re: [ARC5] ARC-5 Crystal Question


> OK.  Curiosity got the better of me.  After reading the thread again, I
> pulled the 8870Kc unit out of my T22 and hooked it up to my trusty grid 
> dip
> meter, which I use as a crystal checker.  It oscillated just fine.
>
> Dennis AE6C
>
> On Wed, Aug 11, 2010 at 9:35 PM, Henry Mei'l's <meils at get2net.dk> wrote:
>
>> I actually did try to get an '8000kc'/kHz  ARC-5 xtal to ocscillate 
>> (Think
>> I
>> lashed together a Pierce, (triode/grid-to-plate) breadboard setup). This
>> xtal didn't oscillate -- but on the other hand I don't recall whether I
>> ever
>> tried to use it in its intended function, so it might have been
>> disfunctional in all respects.
>> But as Dennis writes, why shouldn't they oscillate?
>> Easy enought to find out.
>>
>> Henry
>>
>>
>> ----- Original Message -----
>> From: "J. Forster" <jfor at quik.com>
>> To: <arc5 at mailman.qth.net>; <milsurplus at mailman.qth.net>
>> Sent: Thursday, August 12, 2010 5:10 AM
>> Subject: [ARC5] ARC-5 Crystal Question
>>
>>
>> > Out of curiosity, does anybody know if the quartz crystals, used to 
>> > spot
>> > check the transmitter frequency, will oscillate? In the Tx they are 
>> > only
>> > used as very narrow band filters.
>> >
>> > Thanks,
>> >
>> > -John
>> >
>> > ===============
>> >
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