[Johnson] Push to talk mod relay for Johnson Ranger

[Jim Brannigan]

I use a voltage doubler off the 6.3VAC filament line to power a 12VDC 4PDT 
PTT Relay.

Like many, I have accumulated a lot of PC power cords.  Cut off the PC end 
and they are fine for transmitters up to 100 watts or so.

Jim


> All: Let me ask a question here.  Mr. Scott, full shields...this is a 
> tough
> crowd.
>
> Why not rectify the DC filament voltage (I believe it's ground-referenced)
> and use a suitable low-voltage DC relay?  They are far easier to come by,
> and the job is done basically the same, AND the B+ supply is not on the 
> mike
> connector (through the relay, to be sure, but still there)?
>
> It may not be original, but does it really matter (other than to the
> absolute purist)?
>
> Incoming!
>
> Dave Maples