Hi Michael,
unfortunately, the IC-706's CI-V command set is very poor and many functions cannot be achieved via the computer interface.
To find out which functions your IC-706 supports go to these links:
https://www.maniaradio.it/en/ic706_bkt.html
https://www.maniaradio.it/forum/showthread.php?tid=26
S-Meter is only available for IC706-MKII/G.
To use the PTT command you have to build this small interface https://www.maniaradio.it/en/interface.html -> PTT Interface
unfortunately, the IC-706's CI-V command set is very poor and many functions cannot be achieved via the computer interface.
To find out which functions your IC-706 supports go to these links:
https://www.maniaradio.it/en/ic706_bkt.html
https://www.maniaradio.it/forum/showthread.php?tid=26
S-Meter is only available for IC706-MKII/G.
To use the PTT command you have to build this small interface https://www.maniaradio.it/en/interface.html -> PTT Interface
73 de Mauro, IZ2BKT