Just did some more investigating. I can control frequency and mode now, just fine. Can't control PL on/off, PL Freq, repeater offset (I thought that worked from preset channels in rpt.conf, but it was auto repeater offset doing that) And then the PTT. I'll guess I can usbfob that PTT, like I did the UHF node radio. But when I discovered that the AM tune (*79) (case 119) put it into transmit, I figured that was the PTT mode select, over a serial port command (0x88, or was it 0x08...one's on one's off). I see PTT Off in the source, not on. So just need that clarfied. I can hook the radio up to HamradioDeluxe and it controls fine. Are there any serial port controls, parity, stop bits, word length, etc? That could impact this somehow. My rpt.conf remote stanza, bold ones work, others readback as though they worked (double beep or speech) but have no effect on the radio: 0=remote,1 ; Retrieve Memory MM (*000-*099) (Gets memory from rpt.conf) 1=remote,2 ; Set freq. VFO MMMMM*KKK*O (Mhz digits, Khz digits, Offset) 2=remote,3 ; Set tx PL tone PL Tone HHH*D* 3=remote,4 ; Set rx PL tone 40=remote,100 ; Rx PL off 41=remote,101 ; Rx PL on 42=remote,102 ; Tx PL off 43=remote,103 ; Tx PL on 44=remote,104 ; Low Power 45=remote,105 ; Medium Power 46=remote,106 ; High Power 711=remote,107 ; Bump 20 714=remote,108 ; Bump 100 717=remote,109 ; Bump 500 713=remote,110 ; Bump +20 716=remote,111 ; Bump +100 719=remote,112 ; Bump +500 721=remote,113 ; Scan slow 724=remote,114 ; Scan quick 727=remote,115 ; Scan fast 723=remote,116 ; Scan + slow 726=remote,117 ; Scan + quick 729=remote,118 ; Scan + fast 79=remote,119 ; Tune (brief AM transmission for automatic ;antenna tuner) 51=remote,5 ; Long status query 52=remote,140 ; Short status query 67=remote,210 ; Send a * 69=remote,211 ; Send a # 6=remote,6 ; Set mode The Yaesu Opcodes that don't function are all over 0x08