[Amps] Plate hardware for Eimac tubes

Jim W7RY jimw7ry at gmail.com
Sun Mar 4 17:28:36 EST 2018


Should read just one of many sources.





Thanks
73
Jim W7RY



-----Original Message----- 
From: Jim W7RY
Sent: Sunday, March 04, 2018 1:15 PM
To: Mark Beckwith ; amps at contesting.com
Subject: Re: [Amps] Plate hardware for Eimac tubes

That’s because it’s a spline. Not hex, not torx.

Spline AKA Bristol.
Just one source:

http://www.americanradiosupply.com/ss-508-bristol-spline-key-wrench-9-piece-set/


Collins always used them on knobs and set screws.



Thanks
73
Jim W7RY




-----Original Message----- 
From: Mark Beckwith
Sent: Friday, March 02, 2018 7:30 PM
To: amps at contesting.com
Subject: [Amps] Plate hardware for Eimac tubes

Hi - having some difficulty here swapping tubes around.  Is there a standard
tool/hardware size for the plate caps and heat sinks on top of the Eimac
tubes (I'm working with 3-500s and 4-400s this evening trying to get an amp
working).  It seems like it must be a Torx T5.  Is that right?  Is it
standard?  Hex keys don't seem to work, and the set screw heads are so small
I really can't see them well enough to get after it without risking damaging
tool or part. (Also I don't have a Torx T5 and it just seems like that must
be it but I don't have one to try).

Help?  Thanks.

73 - Mark N5OT

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