[R-390] PTO Stability

[David Wise]

One day I wanted to listen to music on AFRTS SSB.
Even a few Hz off, it goes out of key something fierce.

DW

> -----Original Message-----
> From: David C. Hallam [mailto:dhallam at rapidsys.com]
> 
> What PRACTICAL application does improving the PTO stability 
> over the ballast
> tube design have other than perhaps participating in the ARRL 
> frequency
> measuring contest?  You notice I emphasize the word practical.