[Heathkit] SB 220 on AM

[Peter Markavage]

You could built an attenuator and dissipate the Ranger RF as heat, or
just run the 6146 plate voltage off the low voltage supply or ER (Dec.
2000, page 25) had a circuit with a handful of components to make the
screen voltage variable. Screen voltage variable is nice since now you
can "adjust" the amount a RF input into the linear and hence, control the
linear RF output.

Pete, wa2cwa

On Sat, 02 Sep 2006 20:11:29 -0400 Jim Brannigan <jbrannig at optonline.net>
writes:
> Thanks for the tips. I've been chugging along with a Ranger on AM and 
> have 
> been a bit "chicken" about using the SB-220 for all the reasons 
> noted.
> I have a schematic for a Ranger attenuator, time to get the parts 
> and build 
> it!!!
> 
> BTW: The Harbach(sp?)  fan is just a bit noisier, but it moves a lot 
> more 
> air.
> 
> Jim