[ARC5] CK1306A

[Fuqua, Bill L]

  Some were so reliable that they were used in proximity fuzes in mortar and other rounds.
73
________________________________________
From: ARC5 [arc5-bounces at mailman.qth.net] on behalf of Kenneth G. Gordon [kgordon2006 at frontier.com]
Sent: Thursday, June 26, 2014 11:28 PM
To: hwhall at compuserve.com
Cc: ARC5
Subject: Re: [ARC5] CK1306A

On 26 Jun 2014 at 23:14, hwhall at compuserve.com wrote:

> This URL:
> https://archive.org/stream/MIL-HDBK-213A/MIL-HDBK-213A_djvu.txt
>
> seems to say this:
> "CK1306  Low microphonic triode. Shock- mounted 5744WA"
>
>
>  The Ebay item and the 5744 are both triodes.

The 5744 is a subminiature glass triode with wire leads which is meant to be
soldered into the circuit. Most subminiature tubes were extreme
"high-reliability" types.

In fact, the tube of which the greatest number, perhaps billions, were made
was a subminiature tube made specifically for use in proximity shells for
anti-aircraft use. They were stockpiled when it looked as though the U.S. was
going to have to invade Japan.

A tube had to be pretty tough to be fired out of an antiaircraft gun.

Ken W7EKB
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