[Boatanchors] (no subject)

[Al Klase]

You might want to probe a little deeper. '01's (202, 301, 401. whatever) 
had 1 amp (5 volt) filaments. '01A's have 0.25 amp filaments.  If you 
use an '01A in an '01 application, the filament rheostats won't really 
work as intended.  If the radio is early, 1921-22-ish, it was probably 
designed for '01's.  There are a number of workarounds.

Al

Kenneth D. Grimm, K4XL wrote:
> TELEGRAPHER at att.net wrote:
>> Apparently the tubes used in the Federal Radio that i asked for help 
>> with an id for are cx-301 types.  Does that mean they are actually a 
>> 301?  Don't know that i've seen a number like that referenced to before.
>>
>> Larry
>> W0OGH
>>
>>   
> Hi Larry,
>
> A little searching on the web will probably yield the answers you 
> seek.  The Duncan's Amps site offers a pdf data sheet, complete with 
> curves, on the Cunningham CX-301A in the lower right hand corner of 
> this page:  http://tdsl.duncanamps.com/show.php?des=CX301A  
> Another site indicates that the 01A was the equivalent manufactured by 
> RCA in the late '30s.  A simple Google search for Cunningham CX-301 
> will produce several pages of listings to research.
>
> There are some neat sites out there on the web that have an amazing 
> amount of vacuum tube data available for downloading.
>
> 73,
>

-- 
Al Klase - N3FRQ
Flemington, NJ
http://www.skywaves.ar88.net/