[ARC5] adventures in battery ops

[J Mcvey via ARC5]

It seems to me that changing to 6V tubes , "balancing filaments" ,using subs, etc, is a lot more expensive and time consuming than simply using the original tubes in parallel instead of series. Why do it this way? 
What am I missing?
 


     On Tuesday, April 7, 2015 2:41 PM, Bill Cromwell <wrcromwell at gmail.com> wrote:
   

 Hi Ian,

    Ken,

..for adding the corrections and comments about changing to the 6 volt 
tubes. I didn't get familiar with all the details because I am not going 
there but I did remember there was some fussing with 'balancing' the 
heater string. There are probably some owners (or will be in future) who 
search the web and our archives for this information and now it is included.

73,

Bill  KU8H

On 04/07/2015 10:53 AM, Ian Wilson wrote:
> I think it's the 12A6 for which there is no direct 6-volt replacement.
> I've seen the 6K6 used in 6v mods. This is not quite correct in terms of
> heater current (0.4A) but it's reasonably close.
>
> 73, ian K3IMW
>
>

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