Elecraft KXPA100 Programmers Reference - Manual (Page 9)

9
^BRP (PC DATA RS-232 Serial I/O Speed, GET and SET)
GET format: ^BRP;
SET/RESPONSE format:
^BRP0; for 4800 bit/s,
^BRP1; for 9600 bit/s,
^BRP2; for 19200 bit/s or
^BRP3; for 38400 bit/s. Firmware load automatically chooses 38400 bit/s.
^BRX (Transceiver RS-232 Serial I/O Speed, GET and SET)
GET format: ^BRX;
SET/RESPONSE format:
^BRX0; for 4800 bit/s,
^BRX1; for 9600 bit/s,
^BRX2; for 19200 bit/s or
^BRX3; for 38400 bit/s.
Note: KX3 firmware load through the KXPA100 requires that the Transceiver RS-232 serial I/O speed be
preset to 38400 bit/s.
^BY (ATU Bypass, GET and SET)
GET format: ^BY;
SET/RESPONSE format: ^BYN; (not bypassed) or ^BYB; (bypassed).
Gets or sets ATU bypass relay K118.
Firmware releases inductor, capacitor, and side relays while bypassed to reduce power consumption.
Firmware may change the bypass relay during ATU tune operations.
PA bypass relay K24 is not affected by the ^BY command. See ^OP for PA Bypass.
This command is meaningful only if the optional KXAT100 Antenna Tuner is installed.