[ARC5] QRP Ops

[Ken Gordon]

On 6 Dec 2024 at 21:41, Hubert Miller wrote:
 
> There was a QST article about a single dual section tube,
> ham transceiver. I have it somewhere but don't remember the date, but
> prewar. It used a more powerful tube than the little 3A5 of the BN-1.
> Hue Miller  

>From what I can see, any of the twin-triode 12 series tubes could be used for this same 
circuit idea.

Most of those I have checked have center-tapped filaments. I assume those could be wired 
to switch each half on and off.

Also, some of them would be able to output over 5 watts as transmitters. The 12AU7 has a 
plate dissipation rating of 2.5 watts and the 12BH7's is 3.5 watts.

It might be fun to experiment with those.

My only question is how to implement sidetone monitoring.

Ken W7EKB

-- 
This email has been checked for viruses by Avast antivirus software.
www.avast.com