[R-390] Mods and Mods

Flowertime01 at wmconnect.com Flowertime01 at wmconnect.com
Fri Sep 15 20:28:33 EDT 2006


When you do the twinax, which side might matter as the balance trimmer
affects only one side relative to ground.  I haven't yet tried to 
optimize the input with this trimmer - I followed the balance method with two 
resistors aiming for a null as in the book but single sided input might be 
better
adjusted. Any thoughts?

Cheers, Gord (VE3EOS)

----------------------------------------
Gord,

I have not found a better way to adjust the caps for single sided input. Once 
you set them up with a pair of resistors that's it. You just have to leave 
the first cap in each RF octave transformer can alone. With a single ended 
input, I have not seen a way to meter the change as the cap is adjusted.

Roger AI4NI

In a message dated 9/15/06 2:21:01 PM Eastern Daylight Time, 
ghayward at uoguelph.ca writes:


>  
> 
> 
> 
> 
> 
> 




More information about the R-390 mailing list