[Elecraft] K3 weird RF gain behaviour

[Grant Youngman]

On Nov 29, 2009, at 11:51 AM, Graham Kimbell (G3TCT) wrote:

> 
> stages on full gain.  This can be best heard by tuning in a steady
> unmodulated carrier on AM, at say S7. Turn rf gain to max, af gain up to
> hear background noise. Now reduce rf gain - the noise goes up! Then as I
> reduce the rf gain further, the s meter reaches 9+25, then there's a click
> and the meter jumps down to S7 and the signal is audible again!

I'm hearing something similar.  It's quite noticeable on AM, but I don't really hear it happening on CW/SSB.  It may just be less obvious.

What I'm not seeing at all is the sudden meter reduction you referred to.  As I turn down the RF gain, the meter just tops out.  My AGC settings are about the same as yours.  They don't seem to have an effect in any case.

Gran/NQ5T