[Elecraft] AF1 - Practical Use Question

[Don Wilhelm]

  Stan,

If that "hand effect" occurs while transmitting, then it can be 
attributed to RF-in-the-shack.  The only cure for that is to work on 
your antenna system.  If your transmitting antenna is close to the 
operating position, there may be no real cure.  OTOH, if the transmit 
antenna is not coupling directly into your operating position, that may 
be an indication that RF from the antenna is being coupled back into the 
operating position - the use of baluns or transmission line chokes, or 
effective RF Grounds (try a 1/4 wave "counterpoise" wire) would be means 
to minimize that effect.

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.
>
>
>
>