Recent RS-918SSB - Keyer functionality; How to operate

macro as described below, switch back to PSK mode and use TXRX to transmit. Long
press TXRX switches from/to buffered/unbuffered mode. In buffered mode it returns to
rx after finishing the message unless you keep typing. In unbuffered switch to rx
manually.
Keyer functionality
How to operate
Currently, implemented only for CW/iambic mode, but will be used for other digital
modes, too. After M1 long press function of buttons F1-F5 is changed. Use another M1
long press to return back to default functions. F1-F3 become buttons to record and play
back a macro (just a text at this point). Long press on e.g. F1 enters recording mode -
use iambic keyer to enter the macro. Short press on F1 while in recording saves the
macro. Short press F1 will automatically send the saved macro. Touching any paddle will
stop sending. Label of the button changes to the first word of the macro. F4 and F5 are
currently reserved for future use.
Future improvements
• using the keyer for other digital modes (PSK, RTTY, etc.)
• radio stays in TX mode while sending the macro, it should return to RX between
the symbols
• using USB keyboard to enter the macro
• currently, message is saved only in operating memory and needs to be reentered
each time after powering the radio. It should be saved to EEPROM
• only cw symbols recognized are saved and sent. Non-ascii characters are not
saved
• creating and sending actual macros not just static text
Resources
RTTY
the source of the RTTY algorithm used HERE
Automatic threshold correction algorithm for RTTY HERE