[Boatanchors] 6146 vs 6146A vs 6146B or 6146W

[Richard Knoppow]

----- Original Message ----- 
From: <cemilton at aol.com>
To: <pulsarxp at embarqmail.com>; <boatanchors at mailman.qth.net>
Sent: Tuesday, July 05, 2011 4:46 AM
Subject: Re: [Boatanchors] 6146 vs 6146A vs 6146B or 6146W


>
> I probably do not have the total experience level as Lee, 
> but I've also made the various subs of the 6146 family and 
> also not had any problems.  I've used them interchangeably 
> in my Collins, Heath, Eico, EFJ and WRL rigs.  I, too, try 
> to run them as the individual manuals prescribe.  Not a 
> problem to date.
>
> 73
> Chuck
> W4MIL

    FWIW, W tubes were sold to either the government 
directly or to government contractors. Some of these tubes 
may have had to meet special specifications but probably 
most were simply stock tubes that may have had to be tested 
before packaging.
    In many cases the difference between a plain tube and 
its A version is controlled heater warm up. Since the 6146 
was widely used in mobile equipment that may apply to it. I 
think the B version has somewhat higher plate dissipation.


--
Richard Knoppow
Los Angeles
WB6KBL
dickburk at ix.netcom.com