[Boatanchors] Crystal Current

[mac via Boatanchors]

The 1952 - 1962 ARRL Handbooks  recommend crystal currents be held to  
40ma max and preferably less.
While the FT-243 type is not mentioned specifically these were in  
widespread use at that time.   HC-6/U
types should probably be held to something less than that....

Dennis D.  W7QHO
Glendale, CA

************

On Apr 27, 2014, at 5:18 AM, Bill Stewart wrote:


>
> Morning all,
> Can anyone point me toward info regarding the safe crystal
> currents for the type of crystals (FT-243, HC-6/U and others)
> we use in our HB and BA tube xmtrs?
> Thanks, 73 de Bill K4JYS
> ______________________________________________________________
> Boatanchors mailing list
> Home: http://mailman.qth.net/mailman/listinfo/boatanchors
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Boatanchors at mailman.qth.net
>
> List Administrator: Duane Fischer, W8DBF
> ** For Assistance: dfischer at usol.com **
>
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html