[Elecraft] Another odd behavior

[Stephen W. Kercel]

Stuart:

What you describe is exactly the first thing that occurred to me. The 
same remedy occurred to me. I put 6 (each one only gives you about 3 
dB attenuation)) MFJ-701 chokes on the line between the RigRunner and 
the K2. It made absolutely no difference.

As I said in a prior post, the West Mountain guy says this phenomenon 
of the LED going brighter on key down is a quirk of the logic circuit 
that they use to drive the LED.

73,

Steve
AA4AK



At 05:39 PM 11/6/2006, Stuart Rohre wrote:
>The LED is simply a diode that glows.  It is entirely possible this LED has
>enough response at RF frequencies, that it is responding to your RF keying
>waveform, as well as glowing with the steady DC of the supply.  You might
>try a clamp on ferrite choke between the Rig Runner and the rig.  You may
>have to slide it along the cable to find the point of optimum suppression.
>At that point, use cable ties to position the permanent installation of the
>clamp on choke.
>
>Stuart
>K5KVH