[Elecraft] CW Pitch Resolution

[CR]

The KWM-2 was IIRC 1500 Hz -- and my FPM-300 was 1750. *That* was too much, and inspired a relay-switched front -panel RIT control.  The design reason was sound (no pun intended, for once) enough; the transmit IF filter had to suppress harmonics of the keyed tone for a pure signal.   This is something that might help some digital-soundcard ops.

Also once upon a time -- so I recall -- some legal [half] wit at the FCC decreed that tone-generated CW on the KWM-2 was "A2" and NOT lawful in the CW segments.

Today it's "images sent in data mode are SSTV." Give 'em an inch and they think they're a ruler.

Cortland
KA5S

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From: "Ron D'Eau Claire" <ron at cobi.biz>


I'm just happy that the 1 kHz sidetone that was almost "standard" for many
years is no longer popular. All of my radio licensing CW tests at the FCC
offices used 1 kHz. That made my brain ache,