[Elecraft] k2 and Icom sm-6 mic

[Eddy Avila]

Hi James....I also have the SM6 mic and tried it on my K2 with disappointing 
results....not enough output level to drive the K2!!! E G A D S! The mic 
works great on my ICOM 751A where I get very good reports so I know the mic 
is good.

I also use a Shure Bros 444d on the K2 and get great audio reports from a 
really tough crowd on 75 meters every morning....but again I have to crowd 
the mic to get decent audio drive!!

I did buy from Elecraft the Heil mic "made" for the K2 and get good drive 
from this mic and my friends tell this would be the one to use for dxing but 
they prefer the sound of the 444d.....much smoother to their old ears....HI!

So, there is a simple mod to the SSB board on the Elecraft site (gota dig 
for it) that greatly improves the mic drive of the SSB tx but I haven't had 
enough energy to try this....I haven't read/heard any downside to the mod so 
may be some day? Would be nice if Elecraft were to incorporate this mod in 
their SSB board. I think it consists of on active device.....

Hope this helps....73 /3345


>From: "james conrad" <n1ulv@midmaine.com>

>has anyone wired up an Icom sm-6 to the K2 ??
>
>this is the configuration I used...(I have the jumpers on the radio set for
>the Heil,  so I rewired the mic as follows...)
>
>pin 1 - AUDIO   which has 5v for pre-amp
>
>pin 2 - PTT
>
>pin 7 - SHIELD
>
>pin 8 - GROUND for  PTT
>
>I also have the 5.6k res. from pin 6 to pin 1 one the back of the mic
>connector on the radio that came with the elecraft-heil mic.
>
>the mic works fine except I have to have the mic right on my lips to get 
>any
>real audio out of it.....I know the sm-6 is designed to work on 8v.  could
>this be why???
>
>thanks,
>
>Jim

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