[Milsurplus] Fw: 6AK5/5654

[C.Whitaker]

de WB2CPN
Practally all the US Navy eqiuipment we used in USAF, TACAN's etc,
had "Battle Short" switches.   I understand that in actual battle, or when
the ship fired the big guns, there could be quite a whack to electronic
equipment.  The switch bypassed the shelf and other interlocks.
Yes, very dangerous, but our stuff was on all on terra firma, so that
switch was totally disabled.
Clete
++++++++++++++++++++++++++++++++++++++++++++++++++++

On 3/1/2014 1:46 PM, Captains_Z wrote:
> I remember back to my days in the Nam era working on the Hawks and Hercules anti-aircraft missile systems, that they all had a switch covered with a red cover called a "Battle Short" switch.  Normally you would have to warm up the electronics and keep the system hot before energizing the radars.  This saved the tube life.  If the radars were off and someone detected enemy aircraft coming in, the "Battle short switch" was energized and all the time-out safeties were bypassed.  Filaments and B+ on at the same time.  You had one chance, if the radars came up you lived, so tube life wasn't an issue.  You only did this once!  There's always a way to put the envelope if you need to.
>
> Of course DS/GS wasn't happy.
>
>
> John
>
>   
>
>
> ----- Forwarded Message -----
>> From: Bill Cromwell <wrcromwell at gmail.com>
>> To: milsurplus at mailman.qth.net
>> Sent: Saturday, March 1, 2014 9:52 AM
>> Subject: Re: [Milsurplus] 6AK5/5654
>>
>>
>> Hi Glenn,
>>
>> I have 22 of those tubes here all of which have passed the emissions,
>> shorts, and leakage tests on my tube machine. I do not recall finding
>> any bad ones over the years although I have certainly found bad tubes.
>> Maybe the long arm of Murphy's Law tapped your shoulder. How much
>> current did that IFF gear push through those tubes? For some
>> applications attaining some critical function may be important and tube
>> longevity much less so.
>>
>> Artillery shells in use do not last very long at all but they do meet
>> the functional needs.
>>
>> 73,
>>
>> Bill  KU8H
>>
>>
>>
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