Johnson 6n2 Transmitter Mods
 

I have a need to add FM to this Transmitter. I have a 6n2 VFO and the
manual say a FM can be added. But I need a FM VFO.
Hallicrafters has a HT-18, but that is for HF only. Not 6 and/or 2 meters.
Does anybody know if an VFO exists for 6 and/or 2 meters, that I can hookup
to this Transmitter.
I also, have a Ranger II, to supply the voltages and modulation.

Also, the 6n2 VFO frequency ranges is as follows.
2 meters = 8.0000 thru 8.2222 Mhz
6 meters = 8.3333 thru 8.8333 Mhz

Thanks in advance.
Keith

I have a need to add FM to this Transmitter. I have a 6n2 VFO and the
manual say a FM can be added. But I need a FM VFO.

My recollection is that the 6n2 VFO was modified to add NBFM capability. A
varicap was used to modulate the oscillator directly. Seems like there was an
article in QST or one of the other magazines in the early 60's.

Doug Moore KB9TMY (Formerly K6HWY)

I have a need to add FM to this Transmitter. I have a 6n2 VFO and the
manual say a FM can be added. But I need a FM VFO.

My recollection is that the 6n2 VFO was modified to add NBFM capability. A
varicap was used to modulate the oscillator directly. Seems like there was an
article in QST or one of the other magazines in the early 60's.

Doug Moore KB9TMY (Formerly K6HWY)