[Boatanchors] WYB: Octal triode 6C4 or 6S4 - I meant WTB WTT: 6C4S or 6S4C

[WA5CAB at cs.com]

OK.  Someone already said once that a 6C4 is a 7-pin miniature (which is 
true) and that a 6S4 is 9-pin (I don't happen to know the tube and didn't 
check but it probably is).  But even without looking up the tubes in a tube 
manual, neither one could possibly be an octal triode unless it had a directly 
heated cathode.  Which AFAIK were not built with 6.3 volt heaters.  

The nomenclature assignment standard for octal tubes is, by character, as 
follows:

1st or 1st and 2nd      One or two digits indicating heater voltage

Next or next two    Letter(s) assigned more or less sequentially from A to 
ZZ except first letter of "S" is special case,  And the letter or two 
letters is/are unique.  I.e, 6C4 and 6C5 wasn't allowed.

Next                        Single digit indicating the number of 
independent active elements in the tube.  Heater counted as two.  Heater with 
directly heated cathode also counted as two.

Next one to four        Suffix indicating verious things I won't try to 
delineate.

So a 6C4 as an octal tube would be as follows:

6     6.3 volt heater
C    Third one assigned
4     4 elements, 2 for heater, 1 for 1st anode, 1 for 2nd anode.
or
4     4 elements, 2 for heater and directly heated cathode, 1 for grid , 1 
for anode.

However, the only 6Cx octal is the 6C5 triode.


In a message dated 10/14/2011 20:39:12 PM Central Daylight Time, 
usbssb at hotmail.com writes: 
> Hi Al: Feeling better this week and getting the storage room project 
> done. I meant to say: WTB or WTT: 6C4C or 6S4S That's what I'm looking for. QTY 
> one of whichever one is available. These are octal tubes for sure.  Sorry 
> about the reference to miniture tubes.  I'm catching heck for that!!!Hey, 
> the two missing Lafayette HA 350's I told you about arrived in the post two 
> days ago.  Along with my GF 12 transmitter.Weird huh? 73's 
> GregWA7LYOKinston NC> Date: Fri, 14 Oct 2011 09:25:01 -0400
> >From: anchor at ec.rr.com
> >To: usbssb at hotmail.com
> >Subject: Re: [Boatanchors] WYB: Octal triode 6C4 or 6S4
> >
> >Good AM Greg,
> >    I hope you've had a quiet week, and feeling up a bit.
> >    I've got plenty of 6C4's, but I don't think that's what you meant. 
> >Triode, but pretty dinky.  6S4's a TV tube, isn't it?  Not the same no. 
> >you were wanting for the 500 earlier, is it?  I can't remember what that 
> >was, a 6-something, which I don't have, but what were the subs?  I don't 
> >think I have anything that size.  Can you rewire &use something like a 
> >6L6 or 6146 as a triode?  I know, that's a stretch.
> >73,
> >Al
> >
> >
> >On 10/13/2011 9:32 PM, greg mijal wrote:
> >>
> >>
> >>
> >>
> >>Hi: Looking to buy or trade for a decent used 6C4 or 6S4.Please reply 
> with what you have and reuirements.I will get right back to you. Tnx&  73  
> Greg  WA7LYOKinston, NC                        
> 

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