Re: [Elecraft] K2 Frequency Stability Data and AGC Action

2007-01-17 Thread Jack Smith
That's a good point. In the AM broadcast receiver world, the ideal AGC action, I believe, is to maintain the IF at a constant level into the detector, so (1) the detector does not overload if you are close to the transmitter; and (2) so that the demodulated audio is always the same level, regar

RE: [Elecraft] K2 Frequency Stability Data and AGC Action

2007-01-17 Thread Sverre Holm
> I've finished additional K2 receiver measurements and have posted them to my web site, > www.cliftonlaboratories.com. Very interesting results, in particular the AGC performance curve. I wonder about the statement "In an ideal receiver, once the threshold point is passed, there will be little

[Elecraft] K2 Frequency Stability Data and AGC Action

2007-01-17 Thread Jack Smith
I've finished additional K2 receiver measurements and have posted them to my web site, www.cliftonlaboratories.com. Specifically: 1. Frequency stability from a cold soaked start (K2 left outside overnight, with a temperature low of 20 degrees F). This data can be viewed at http://www.cliftonla

[Elecraft] K2 Frequency Stability and Invitation to DC Area K2 Owners

2007-01-11 Thread Jack Smith
I've posted two series of frequency stability measurements for my K2 (SN 5689) that might be of interest to the group. The data can be seen at http://www.cliftonlaboratories.com/Updates.htm under the 11 January 2007 entry. I also wonder if there are any Washington DC area K2 owners that would

[Elecraft] K2 Frequency stability

2006-12-25 Thread adamkern
Hello again and happy holidays! With regard to the K2 frequency stability... Several good points were raised and I realized that I wasn't adequately specific before. The drift I notice is primarily related to warmup and not during normal operation. I will perform the aforementioned test to c