Elecraft K3S firmware v4.37

MCU 4.37 / DSP 2.73

• ADDED "SMH" COMMAND (high-resolution S-meter):

T​his is presently experimental; it is intended to work with W8WWV's ÒS-meter LiteÓ program. "SMH;" responds with "SMHxxx;" where xxx is approx. 005 @ S-1, 040 @ S-9, and 100 @ S9+60. Resolution is approximately 1 dB. NOTE: The value returned will probably be adjusted after testing.

• P3 and PC NOTIFIED ON RX ANT CHANGE: Switching RX ANT on/off now informs the P3 and a connected PC of possible changes to the preamp and attenuator settings. These are stored separately for the RX ANT on and off cases.
• SUB RECEIVER ANTENNA MESSAGE: Suppose both main and sub receivers are on 6 meters, with sub sharing the main antenna. If the main receiv​er is then switched to a transverter band, ÒUSE AUXÓ will flash on VFO B, along with the SUB icon, for about 3 seconds. This alerts the operator that the sub will not have any incoming signal from the main antenna path.

The user should switch to the sub receivers AUX antenna. (This warning already appears if the main receiver is switched to a band whose low-pass filter would attenuate signals on the sub receiver band.)

• "ERR 12V" VERIFICATION: If the PA 12 volt input is found to be missing, it is checked a second time (after a delay), to make sure it wasnt due to noise.