[ARC5] Tube entenders

[Roy Morgan]

On Jan 6, 2013, at 7:50 PM, Bob wrote:

> ...  I can see the sometimes need for tube extenders for 7 pin 1625  
> and 837 tubes. 4 pin 811's and 7 pin 813's

I have not seen any commercially made extenders for those bases, but  
there well may have been some made.

I call your attention to one of the Corollaries of Morgan's Law of  
Inverse Perversity (about special tools), and encourage you to find  
some dead or broken tubes, and a socket that matches, and make your  
own.  It could be that extending transmitting tubes will alter the  
circuit capacitances and inductances and lead to trouble.  The Command  
transmitter tube sockets are recessed in a cylinder of aluminum for  
more than one reason.

Morgan's Law of Inverse Perversity:

If you have no spare for a critical part, that part will fail at the  
most inopportune time.  If you do have a spare, or spares, the  
original one will never fail and you'll never use the spare.

Troubleshooting Corollary:

If you have no information on an obscure failure mode, that failure  
will happen to you at the most inopportune time.
If you do have complete, detailed information, the system will never  
fail in that way.

Tool Corollary, inspired by Barney:

If a job requires a special tool, and you have one handy, you'll  
almost never need to use it.
If you can't find the tool, and you buy or make a new one, the old one  
will show up soon. Then you'll have two.


Roy

Roy Morgan
k1lky at earthlink.net
K1LKY Since 1958 - Keep 'em Glowing!