[Elecraft] K2 Noise Blanker Slot as Additional IF Amplifier Stage

Has anyone thought of, or tried modifying the K2 Noise Blanker to be an additional K2 IF amplifier stage? My problem is that when I really, really need the crystal filter, I am trying to copy a very weak (but readable) CW signal with adjacent S-9 QRM. When I switch in tighter than about 1200

[Elecraft] CW Crystal Filter Signal Loss

My K2 S/N 3202 exhibits what seems to be undue loss of sensitivity as the CW crystal filter is narrowed. After calibrating and recalibrating with Spectrogram, and signal tracing through the receiver IF section, I purchased a new set of seven CW crystals. I installed the crystals today

[Elecraft] K2 CW Filter Loss

I keep forgetting to use Plain Text: Don, Thanks for the analysis. I will send you the Spectrogram plots. We have family visiting this weekend, but I can get back to the K2 on Sunday evening or on Monday. I did look at the 1 microvolt signal with Spectrogram. As I remember, the peak did

[Elecraft] K2 Front Panel Extension

I really like the idea of a Front Panel Extension for the K2 and have seriously thought about building one myself. I like lots of knobs, switches and buttons. I dislike having to do repeated long presses of a button to cycle through the DSP filter bandwidths, for example. I'd much rather

[Elecraft] K2 Software Front Panel Extension

Thank you Leigh and Don for your suggestions. I was thinking, ok, I could accept a computer screen K2 front panel extension if it included logging software. My immediate reaction was, I'll have to write the software myself. But, it has been done, and it's called Ham Radio Deluxe!