[SOC] S38 tube count

[w7dra at juno.com]

having the BFO coil end coming out through the front panel make the S38 a fine radio ....................always like a BFO with variable freq control mike w7dra

---------- Original Message ----------
From: Joe Pontek Sr <v31jp1957 at gmail.com>
To: soc at mailman.qth.net
Subject: Re: [SOC] S38 tube count
Date: Fri, 24 Aug 2018 03:13:23 -0500

My S38 has 5 tubes, 12+12+12+35+50 = 121, standard for the AC/DC radios 
of that time and I had repaired
quite a few to friends & neighbors to support my habits at the time, 
potato chips, Coke, ham gear and girls.
Oh, gas for my car when I hit 16.

My S38 is buried right now.  I have a new A.C. cord ready to install on 
it, but until I get it out, I cannot give
the actual tube line up, but probably 50L6, 35W4, 12SA7, 12SQ7, 12SL7 
maybe were typical from memory.
As there were several versions from S38, S38A, S38B, S38C, etc. Early 
ones used octal sockets, but later
ones used miniature pin tubes.

Biggest problem was the BFO injection signal was too low, especially for 
a loud signal.  I used to add a
"gimick" to increase the coupling and a "poor mans" Q-multiplier for 
selectivity.


On 8/23/2018 1:45 PM, w7dra at juno.com wrote:
> 12 12 12 12 35 35 =48+70=118 (i think, this is soc isn't it?) 35L6 and 35Z5 i dont know where this guy got these non hacked into 1940s radios (HQ129/S38) but other than changing the old caps out and putting in a polarized line cord the S38 will stand as it is.  the 129 will take a bit more time - something wrong with the BFO???? i made a foolish (soc like decision?) thinking i was going to die soon, and a few years ago stopped actively radio contesting. spending time on the internet looking at health blogs and realizing getting old is a fight, not something  to lie down peaceably adn accept mike w7dra i

-- 
Regards, Joe, K8JP/V31JP, Martin & Sidney Pontek
175 Diamond Loch Rd., Apt. 5
Gilmer, TX 75644-9374
U.S.A.
or
P.O. Box 280, Dangriga, Stann Creek District
(Hopkins Village) Belize

903-204-2318 (My TX cellular)
903-884-5990 (Skype telephone number, Belize & TX)
Also, K8JP, member FOC-1743, QCWA-LM21894, OOTC-4607, A1OP, SKCC-3171T, NAQCC-5798, Flying Pig-2819, FISTS-7625CC951, A1C-2299, SOC 1075, 10-10 22977, PG1915841, CW Rag chewers #21,
Facebook: Joe Pontek
Skype: v31joepalooka
I am looking for Vibroplex Model X, Double lever and prefer basket cases to restore.
LotW

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