Re: "Hot" K3
Posted by
ab2tc on
Mar 16, 2009; 9:53pm
URL: http://elecraft.85.s1.nabble.com/Hot-K3-tp2483931p2488707.html
Hi all,
I, too. think that with the current firmware the AGC threshold even when adjusted to its maximum is too low, making the receiver excessively "hot" on all bands except 10m. Way back, a firmware change was made that lowered the AGC threshold by 10dB. I thought it was more appropriate prior to that change. I wish for Elecraft to increase the range of the AGC threshold adjustment to be able to raise it another 10dB to tame the receiver on the lower bands (<15m). I have learned to live with this by reducing the RF gain as many others have mentioned. This works well but leaves the S-meter relatively useless. The idea of raising the S-meter base reading as the RF gain is backed off is a good one, but in the K3 with the current firmware the base is raised way too much leaving the S-meter readings highly exaggerated when the RF gain is backed off. Fortunately I don't miss it that much as I use the the S-meter in PowerSDR in conjunction with LP-PAN.
Phil LaMarche-2 wrote
This thread was very helpful to me and I learned a lot about the RF gain
control. Thank you!
Phil
Philip LaMarche
LaMarche Enterprises, Inc.
www.instantgourmetspices.com
<snip>