[Elecraft] FW: Sidetone mods

[Dan Barker]

Ok Wayne, I checked the Rev D schematic. It matches the Sidetone mod I
performed, except the RFC has nearly twice the inductance (I also see that
I'd drawn RP7 pin 7 to ground instead of 5A).

Well, you're the boss. I think changing the 47mH choke to an 82mH choke will
be far easier than the TF3MA mod, but you have to admit, his before/after
spectra were impressive. I'll check mine before/after the inductance change
and report back. If it's much worse than a 25 db improvement, I'll try it
the other way too.

But hey, you gotta admit that Schematic drawing program is pretty slick for
the price!

Dan / WG4S / K2 #2456

-----Original Message-----
From: Wayne Burdick [mailto:n6kr@elecraft.com]
Sent: Monday, December 09, 2002 1:36 AM

The sidetone mod we used works very well, assuming you add both the resistor
and
the RF choke. Check the schematic in the revision D K2 manual. <snip>