[Elecraft] SSB related problems

[Kevin Cozens]

Greetings, all.

I have a couple of problems with my K2/KSB2. I am hoping both problems are 
easy to fix.

1. USB seems more sensitive than LSB

When I was using an AM station (CHU Canada) to align the filters I noticed 
that I get a higher S meter reading on USB than on LSB. This was with the 
same filter, same frequency, just a simple switch of the mode.

The BFO filter settings were adjusted using Spectogram using the 1kHz 
pulses from CHU. Is this a problem with the alignment of L34 on the RF 
board or is it something else? My K2 does have the SSB filter flattening 
mod installed (in case that comes in to play).


2. Adjustment of the SSB carrier balance

I can use an external receiver to find the minimum signal in LSB mode. In 
USB mode, I can't see any signal at all at 5 watts in to the dummy load. 
Should I just bump the power level and see if I can see a carrier then on 
the external receiver? On LSB minimum signal occurs from approximately the 
11oclock to 1oclock position of R1.

What is the typical in circuit resistance between pins 1 and 2 of U5 on the 
KSB2? I expected around 1M due to the presence of R1 but only measure about 
10k.

Cheers!

Kevin.  (http://www.interlog.com/~kcozens/)

Owner of Elecraft K2 #2172        |"What are we going to do today, Borg?"
E-mail:kcozens at interlog dot com|"Same thing we always do, Pinkutus:
Packet:ve3syb@ve3yra.#con.on.ca.na|  Try to assimilate the world!"
#include <disclaimer/favourite>   |              -Pinkutus & the Borg