Heath SB-1400      ! Radio Model for display in Log-EQF
M,2                ! M for manual update, x/18 second inter-character delay  
                   ! Acknowledge command (leave blank if not required)
0                  ! Bytes to receive from radio as ECHO or OK block
                   ! Pacing or Initialize command (leave blank if not needed)
H                  ! Hexadecimal (H) or String (S) instruction data type
R                  ! Commands sent to radio Forward (F) or Reverse (R) order
                   ! -------------- FREQUENCY READ -------------------------
1000000000         ! Command to receive operating FREQUENCY from radio
25                 ! Number of bytes required (we don't need all 345 bytes)
3                  ! Starting byte position for FREQUENCY value
4                  ! Number of bytes in FREQUENCY value
F                  ! Frequency decoded in Forward (F) or Reverse (R) order
B                  ! BCD (B) or Weighted Binary (W)
                   ! -------------- MODE READ ------------------------------
1000000000         ! Command to receive operating MODE from radio
25                 ! Number bytes expected from radio after MODE command
25                 ! Starting byte position for MODE value
1                  ! Number of bytes in MODE value
1F                 ! Bit Mask for MODE value, if required
04                 ! Value for CW
10                 ! Value for LSB
08                 ! Value for USB
01                 ! Value for FM
02                 ! Value for AM
00                 ! Value for FSK
                   ! -------------- FREQUENCY SET --------------------------
0A00000000         ! Command to set the operating FREQUENCY
2                  ! Starting byte position for FREQUENCY value
4                  ! Number of bytes in FREQUENCY value
                   ! -------------- MODE SET -------------------------------
0C00000000         ! Command to set the operating MODE
2                  ! Starting byte position for MODE value
1                  ! Number of bytes in MODE value
2                  ! Value for CW
0                  ! Value for LSB
1                  ! Value for USB
6                  ! Value for FM
4                  ! Value for AM
8                  ! Value for FSK