On 2/27/2019 5:33 AM, Ignacy wrote:
K3 has an excellent speech processor with equalization. K2 has compressor and sounds OK but not dramatic with good microphone. IMHO KX3 processor is not too efficient and even below K2. But KX3 has an equalizer allowing any mic to sound good.
Yes. The K2 is compromised in several ways on SSB. First, the audio stage is low on gain, so a mic doesn't hit the peak limiter hard enough to do much. Second, the audio chain has a flat response, so low frequency components of the voice waste transmitter power. I did a mod for mine, which W3FPR knows about, that provides some low end rolloff and increases mic gain by about 6dB. That helped, but it's nowhere near what the K3 and KX3 are capable of.
Second, the narrow settings of the receive filter are produced by stagger-tuning of the multi-stage CW filter, and their combined response looks like a side view of the Rocky Mountains, so the accompanying phase shift distorts the RX audio enough that using the narrow settings often degrades speech intelligibility (that is, it makes voices HARDER to understand).
73, Jim K9YC ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
