[ARC5] T-22 Woes

[David Stinson]

I'm betting your tank is not resonant due to Hi-Z contacts.
This is a very common problem.
Check the screws that mount the variable caps,
tank coil and roller coil, especially those that are supposed
to provide grounds.

Ground one end of your ohmmeter.
Probe the top tank coil contact.
It should read grounded.
If it does not, check the connection at the bottom 
of the tank coil.

Next,  open the bottom of the rig.
Gently probe the stator plates of the two front-most 
variable caps.   Probe the plates, not the end contacts.
All the stator plates should read at DC ground (through
the tank coil).  If they do not, a Hi-Z contact point has
developed between the stator plate stack and the metal
strip pressed onto the end of the stack as a connnection point.
Solder one of the pressed connection points with a 
sturdy iron, being careful not to destroy the plastic
beads that mount the stators.

Hope this helps.

73 Dave AB5S