[Hallicrafters] 4 pin tube socket

[W4AWM at aol.com]

In a message dated 11/23/2005 15:36:39 PM Eastern Standard Time, 
w5jdy at cox.net writes:

> I have recently acquired an old Halli S-20 Receiver..  The
> previous owner removed the 4 pin rectifier tube (80) socket and replaced it
> with an 8 pin socket and used a 5Y3GT.

Hi Joe,

Thay 5Y3 swap seems to be a pretty popular mod for the S-20. I have seen 
several thay way and I have one myself. The funny thing about mine is that I 
didn't discover the mod until I got around to cleaning the insides.  When I pulled 
the "80," I was amazed to find that it had an octal base. Looking very hard, I 
found that it was not an 80 but a 5Y3 with an 80 shaped bulb. I had never 
seen that configuration before, but I guess the early 5Y3s looked that way. I 
plan to leave it until it blows and them mod it back to OEM configuration.

73,

John,  W4AWM