Hi all, We've significantly improved the K3's DSP AGC based on feedback from DXpedition users. In some cases, dozens of stations with nearly identical amplitude may be packed together into just a few tens or hundred of Hz of bandwidth. The AGC threshold can now be set much higher, allowing "headroom" for such signals. Any nonlinearities due to DSP AGC can thus be avoided for signals as high as about S9.
At the same time, we've eliminated the slightly "scalloped" (non- monotonic) AGC curve noted by one reviewer. This was caused by interpolation errors in the DSP's fast log and anti-log functions, which are now orders of magnitude more precise. The resulting AGC curve is very smooth, so signals right at the threshold can't be modulated by AGC onset. If you'd be interested in helping us evaluate these changes, or if you know of someone who might benefit, please email me directly. 73, Wayne N6KR ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
