[Elecraft] Attenuator and RF Gain Settings

[Barry N1EU]

My experience jibes well with Jim's.  Gain throttling is imperative to get
more than mediocre results using the K3:  http://n1eu.com/K3/K3_agcgain.htm

73,
Barry N1EU


Jim Brown-10 wrote:
> 
> On Sun, 31 Jan 2010 14:23:33 -0500, Brian Machesney wrote:
> 
>>For the first time, I turned on the K3's ATT and found that I was even
>>better able to separate callers, particularly when trying to pick out
>>relatively weaker EU signals from stronger NA signals responding to my CQ.
> 
> Those of us with lots of grey hair learned 50 years ago that the most 
> important control on our receiver was the RF Gain. They didn't come with 
> attenuators or preamps in those days, but we also learned to switch them
> to 
> a shorter antenna when they got overloaded. 
> 
> With a modern radio, on bands below 20M, the ATTenuator should almost 
> always be ON and the PREamp should almost always be OFF for the greatest 
> ability to separate weak signals from strong ones. On 20M you can usually 
> turn off the ATTenuator, but you may not need the preamp until you go to 
> higher bands. 
> 
> Another hint -- to pull really weak ones out from between strong signals, 
> turn down the RF gain to the point where you are just hearing the weak
> one. 
> During the 160M contest this weekend, preamp was off, ATT was on, and my
> RF 
> gains were at about 2'o'clock. 
> 
> 73,
> Jim K9YC
> 
> 
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