[Elecraft] AF1 - Practical Use Question

[Don Wilhelm]

  Ron,

I wonder if the "buzz" is audio pickup from hand coupling.  I hear that 
a lot if I put my hand on the audio circuits of the KX1 (which I do for 
a test).  Since the AF1 (and all mini-modules) are open board circuits, 
I assume that is within the realm of possibility.

73,
Don W3FPR

On 12/14/2010 10:01 PM, Ron D'Eau Claire wrote:
> The "buzz" is interesting. With the tight bandpass, the sidetone (and
> received signals) from the K3 should be closer to a pure sine wave than
> ever.
>
> Ron AC7AC
>
> -----Original Message-----
> Don, I don't have any of that fancy equipment unfortunately.  But I just
> met with success anyway!
>
> I was expecting to hear a "pure" sidetone - what I hear is a buzzing
> sound along with some modulation that sounds reasonably close to the 600
> Hz I set.  When I took my hand away from the AF1, the buzzing stopped
> and the sidetone, still sounding just a little bit constricted in the
> BP2 position (not nice and pure and loud like in the barefoot K2) was
> completely reasonable and useable.
>
>
>
>