[SignalOne] Short video presentation of my CX7

[Peter Sundberg]

Hello,

This morning I have made a short video presentation of my CX7 in 
action on 20m CW and SSB. The sound comes from the Signal/One CX-7S speaker.

https://www.youtube.com/watch?v=XNP2H3X5TeU

I just repaired the screen powersupply. The filter capacitor had 
dried out after all these years, making the radio sound somewhat 
distorted on transmit. Replacing the capacitor was an easy fix and 
the radio sounds great again. The new cap fit perfectly in the old 
paper roll that held the original cap so you can't spot a new part 
added. While at it, I added a fuse in the screen line as suggested to 
protect the final 8072 tube.

 From what I can tell just now, the plate high voltage capacitor bank 
is in good shape, but eventually I will replace those capacitors as well.

At the moment I am in the process of incorporating the mods suggested 
by W0YVA/4 in CQ Magazine January 1977 to my CX7, especially those 
that should help prevent further damage under certain fault conditions.

73
Peter SM2CEW