[R-390] Re: (R-390) PTO Test jigs

[Lionel Sharp]

There is an article titled "New life for the Collins 51J receiver VFO" 
by William Orr, W6SAI  (now a SK) in the December 1969
issue of Ham Radio magazine which features a "test jig" to operate on 
the PTO.

 The PTO is a 70E - 15 which covers 2 to 3 Mhz with 10 turns of the 
tuning shaft.

This PTO does not appear to be as complex as the ones used in the R390 & 
R390A receivers whose PTOs cover the range 2.455 to
3.455 Mhz..

Lionel L Sharp, VK4NS