[ARC5] Tube B+

[Tim]

I built a "Canteen Radio" with a 6SK7 / 12SK7 one-tube regen.
http://www.n6cc.com/canteen-radio-receiver
It will run on 25 VDC B+ (not real loud....) - but it works....
73, Tim
N6CC



On Sat, Mar 9, 2013 at 9:17 AM, Bill Cromwell <wrcromwell at gmail.com> wrote:

> On Sat, 2013-03-09 at 11:59 -0500, Wayne Eleazer wrote:
> > I have run my ARC R-11A at a B+ of 28 VDC and it still worked.  Normal
> >  B+ for that receiver, is of course, 250VDC.
> >
> > Wayne
>
>
> Hi,
>
> I am on several mail lists that feature use of tubed radio gear at least
> in part. Quite a few of the members report successful use of reduced B+
> on tubes that were not specifically designed for low B+ (space charge
> tubes). I have used a ~45 volt battery as B+ for the command receivers
> that have weak caps with some success. When the caps are replaced they
> are just that much better. There are some places where I can get a six
> pack of 9 volt batteries for just over six bucks making them more
> affordable as fodder for tube rigs than the five dollar individual
> batteries with the gold plating and rabbits for salesmen! I don't think
> any kind of a transmitter would operate very long on five of those! But
> receivers can be much more thrifty with B+. I build my AC receiver power
> supplies to target anywhere from 90 to 150 volts.
>
> There are some fellows on one of the regen lists who operate their
> radios with B+ as low as 6 volts! 12 volt B+ supplies are reported quite
> a bit. Those guys use more B+ to get speaker volume but can use the
> audio with earphones at those same low voltages. Some of them resort to
> solid state audio power for more oomph without higher B+. Some people
> have trouble keeping their fingers out of the B+ and low voltage
> operation is real attraction to those guys (evil grin). I can test a
> single 9 volt battery with my tongue but I like to have enough of them
> (at least five in series) that I don't want to test that way! Here...
> hold these wires (evil grin).
>
> Maybe one of these days I'll try a single 9 volt battery as B+ on one of
> my command receivers just to see what happens. Now if we could do
> something about that heater power requirement...
>
> 73,
>
> Bill  KU8H
>
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