[ARC5] Re SCR-178

[Kenneth G. Gordon]

On 27 Feb 2012 at 11:33, Phil wrote:

> I had one of those, a long time ago. It was a good set. I used the
> receiver to pick up W1AW code broadcasts. As was said by, Mike, it is
> of old design. Still a very good receiver. The 865 was a tetrode or
> screen grid tube that predated the transmitting pentodes. Phil 

For those who wish to build a transmitter that will meet the Antique Wireless 
Association' rules for their Bruce Kelly 1929 event, the 865 is the least 
expensive tube that was offered for sale in 1929 or earlier. 

It is a good little tube.

The Bruce Kelly rules require both tubes and circuits for the transmitter that 
were commonly available in 1929 or earlier.

My Bruce Kelly rig has a push-pull pair of 211s in a TNT circuit.

On the air, its signal quality cannot be told from a modern rice-burner.

Ken W7EKB