[Elecraft] RE: KSB2 mic-gain mod...a MUST!!

[Eddy Avila]

As always, if John ki6wx designed it, the mod will work great! I had to do 
the KSB2 mic gain mod, just not enough gain for my voice and a Shure 444 
mic..... Now I'm getting very good audio reports from a tough crowd of 
75-mtr ops that are quick to compare my K2 audio to their Collins, Drake and 
Swan rigs!!! They're now telling me my audio compares more to my ICOM 751A, 
which is a nice-sounding SSB rig and lots of audio punch to boot!!! And, an 
added feature is that I can use the VOX feature now, whereas before there 
wasn't enough punch to reliably operate using VOX!!!

The mic-gain mod took me at most a half hour to do, most of which was spent 
finding the parts in my junk box.

However, word of caution, I did the initial mod by stretching the T2 wires 
across each other and this worked for a while, then I suddenly started 
losing sensitivity. DAMN! I knew it had to do with the T2 mod on the KSB2 
board. So�.after screwing with it for a while and risking damage to the 
circuit board pads I decided to pull out T2 and rewound it to make more room 
to cross windings 2 and 4. Now the receiver works great again and I swear I 
have more receive sensitivity than before�. well, maybe! HI

Tnx agn John for another great effort improving the K2!!

I may in the future do the band pass mod ki6wx also describes on his web 
site.... I�ve heard really good things about it and it's worth the time it 
takes to do.

Cheers.... k6sdw

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