Q: How do I delay the PTT on a port after a power cycle?
After a power failure, some radios require that the PTT not be asserted for some amount of time. You might need this if you have a tube power amplifier that needs to warm up, a Yaesu DR-1X that might lock up, or a Kenwood TKR-x50 Version 1 that switches modes.
This example uses a User Timer (see page 20-1) that is started by the Power-Up Macro (see page 5-28). Macros disable the transmitter PTT (see page 11-26), then reenable it after the delay time.
; Powerup Macro PTT Delay ; Prevent PTT for 30 seconds after an initial powerup. 99 26 0000 A000 * ; Set the Power ON-Triggered Macro to restart on a power failure ; setup a delay timer 99 49 00 03 300 * ; Set timer 00 to 30.0 seconds 99 49 00 02 A001 * ; Set macro A001 to execute when the timer times out ; Powerup Macro 99 20 A000 99 63 0112 0 * ; Disable PTT #1 99 29 A000 99 49 00 04 * ; Start the Timer in One-Shot mode (fixed length) ; Delayed Powerup Macro 99 20 A001 99 63 0112 1 * ; Enable PTT #1