[Milsurplus] 1N21's and 1N23's

[J. Forster]

Interesting...  threads into ceramic material. Sounds like that's the
whisker screw. The unit sounds reversible polarity.

Thanks,
-John

============

> Folks,
>
> This conversation just sent me to the parts box where I knew some diodes
> were lurking.  The Kemtron 1N23A's, that I have, have a set screw under
> some wax right in the middle of the side of the ceramic body.  The also
> have a set screw in the side of the large gold end that probably hold it
> to a pin similar to the small end.  The 1N23B's and C's don't have the
> screw in the ceramic.
>
> YMMV,
> Al
>
> J. Forster wrote:
>> Hi Ray,
>>
>> I don't understand this:
>>
>> "If you loosen the set screw on one
>>
>>> end they just become a pin on Bothe sides don't they?"
>>>
>>
>> I think the "whisker" is attached to the screw. If you loosen it, you
>> get
>> an open circuit. If you screw it down too far, a short.
>>
>> -John
>>
>> ===============
>>
>>
>>
>>
>>
>>> Almost all the older series Harris FM broadcast transmitters used that
>>> style diode in the reflectometer for sensing forward and reflected
>>> power.
>>> I have two FM-10 K series 10kW transmitters and one RCA 3 kW
>>> transmitters
>>> as standby transmitters that still use them, think the HT-20 20 kW also
>>> uses them too. The design allows them to easily be changed in the event
>>> of
>>> damage although I have never had one fail, don't know if it's the same
>>> number but definitely the same design, If you loosen the set screw on
>>> one
>>> end they just become a pin on Bothe sides don't they?
>>> Ray Fantini KA3EKH
>>>
>>
>>
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>
> --
> Al Klase - N3FRQ
> Jersey City, NJ
> http://www.skywaves.ar88.net/
>
>