[AMRadio] VFO vs XTAL

Rick Brashear rickbras at airmail.net
Wed Oct 17 21:50:27 EDT 2007

I ran it through a small capacitor before the grid of the 828 buffer.  I
appreciate the info Jim and Geoff on the output of the 122.  I thought it
should be plenty hot to do anything I wanted.  I guess I'd better go back to
crystal control and not take on another project of repairing the vfo at this
time.  It was just for a test anyway.  I am supposed to get about 100 ma pa
grid current and I'm only able to muster up about 65 ma.  However, I am
getting the full 250 - 275 watts of RF out.  I just need to level it out a

Thanks guys...

I'd look at a schematic of a smaller rig (like a Viking II, or maybe a 
Globe King rig.. see how much input is required. 

Shouldn't the RF output of the VFO be capacitively coupled to the input 
of the buffer stage, anyway?

Driving your AM Rig without a scope, 
is like driving your car at night, without headlights. (K4KYV)

73 = Best Regards,

More information about the AMRadio mailing list

This page last updated 22 Jan 2018.