[Hammarlund] Speaking of Tubes ...

[Bill Cromwell]

Hi,

There are certainly a LOT of those dual triode tubes around. <heresy 
alert!> I am planning to build the hardware part of some SDR radios 
using vacuum tubes. The solid state crowd should not be allowed to have 
a monopoly on the fun. The dual triodes will be accommodating in the 
divide by four circuits and in the buffer amps for the I & Q signals. 
The whole box could be built around those.

73,

Bill  KU8H

On 10/01/2014 12:00 PM, Bob Young wrote:
> 12AX7's were my second guess although ENIAC didn't use them (not sure if they were even around back then) . I read a book about that whole process, very interesting, of course the two inventors ended up with virtually nothing,
>
> "ENIAC used common octal-base radio tubes of the day; the decimal accumulators were made of 6SN7 flip-flops, while 6L7's, 6SJ7's, 6SA7's and 6AC7's were used in logic functions.[citation needed] Numerous 6L6's and 6V6's served as line drivers to drive pulses through cables between rack assemblies."
>
>
> Bob Young
> KB1OKL
>
>