The balanced mixer module acts as a microphone.

On Mon, 21 Mar 2005 17:59:18 GMT, "Lars Brandt"
wrote:

No I use a whip antenna and no ground connection.
Is it neccesary to connect RX to ground? I have no good ground connection in
my flat.
So it is normal with noise from the tuning knob if I don't have connetion to
ground?
//Lars
"Dale Parfitt" skrev i meddelandet
news:2cs%d.6013$uw6.1020@trnddc06...

"Lars Brandt" wrote in message
...
Hi Steve
I don't think the problem is feedback vibration from the speaker. I have
listen even in headphones and then the speaker is quite.It is when I
turn
the tuning knob I can hear a rassle sound even in the headphones.

Are you using an external antenna with a decent RF ground? Not unusual to
hear encoder noise when using the atached whip and internal preamp.
Grounding the RX will eliminate this.

Dale W4OP