[Heathkit] TV-7 Tube data for compactrons

[jack m]

You will especialy want to check the 6C10 vertical amp compacton tube in that SB-610 (BIG $$$ due to the audio and guitar crowds), which  I believe is a "tripple" hi-mu/sharp cutoff 12AX7 equivalent with an aditional and identical section. 
 
I was fortunate to find an adapter for my Eico 666 tester for compactrons, but what an exercise - one has to actually rotate the tube to the correct orientation in a 13-pin compactron socket (extra pin is in the usual keyway void - try to find a replacement for that!) to get to the correct compactron section for testing!  Heath's TT-1A ingeniously eliminated this exercise by using two standard sockets to tie in the compactron and other oddball sockets and by going through additional switches.
 
Good luck
Jack
 
> From: heathkit-request at mailman.qth.net
> Subject: Heathkit Digest, Vol 113, Issue 2
> To: heathkit at mailman.qth.net
> Date: Sun, 2 Jun 2013 12:00:08 -0400
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>    1. TV-7 Data for Compactrons (k2cby)
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> ----------------------------------------------------------------------
> 
> Message: 1
> Date: Sun, 02 Jun 2013 10:11:32 -0400
> From: k2cby <k2cby at optonline.net>
> To: heathkit at mailman.qth.net
> Subject: [Heathkit] TV-7 Data for Compactrons
> Message-ID: <C5586ED87BD84493909A6949B4993BE0 at milesdesk>
> Content-Type: text/plain; charset=us-ascii
> 
> I've got an SB-301 receiver that uses a 6AS11 and an SB-610 station monitor
> that uses a 6J11. 
> 
>  
> 
> I've also got a TV-7 transconductance tube checker.
> 
>  
> 
> Both of these tubes are compactrons, developed long after the TV-7 went into
> (an probably out of) service.
> 
>  
> 
> While I can build an adapter to accommodate the 12-pin socket and I can
> figure out the tube pin settings for the TV-7, I haven't the slightest idea
> how to select the right bias and shunt values, the setting of the RANGE
> switch and the expected meter reading.
> 
>  
> 
> (1)                 Does anybody have information on how to set up the TV-7
> using the characteristics data from a tube manual (which I have)?
> 
> (2)                 From what I remember RCA used to make many of their dual
> tubes by putting together some of their favorite singles. For example, a
> 12AU7 is just two 6C4s in one envelope. Did they do this with the 6AS11 and
> the 6J11? If so, what were the components?
> 
> (3)                 I heard that the owners manuals for some of the Heathkit
> tube checkers had a section on testing unlisted tube types. Would this help?
> Can someone shoot me a copy of that section?
> 
>  
> 
> Miles B. Anderson, K2CBY
> 16 Round Pond Lane
> Sag Harbor, NY 11963
> Tel.: (631) 725-4400
> 
> Fax.: (631) 725-2223
> e-mail: k2cby at optonline.net 
> 
> 
> 
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