Hi LA5OUA,
Like yourself I kept wondering how, using our traditional Icom cabling concept and idea got me really puzzled.
Not to mention I am new and also not technical at all, just an operator level!
Then I realized my LDG AT-1KPro2 is an Auto tuner with (
RF sensing). Here are my solutions (QRP and QRO):
QRP:
SunSDR2 DX <==> LDG AT-1KPro2 <==> SWR PWR Meter <==> EFHW UNUN (Just coax, removed all custom control cables)
1. Click Tune on EESDRv2 or v3(Software) on PC, sends a tone from SunSDR2 DX (Increase
Tune PWR to 40% if Tuner not picking up PWR)
2. LDG AT-1KPro2 would auto tune (If set to auto mode)
3. Press and hold LDG AT-1KPro2 Tune Button (If set to semi-auto mode)
Doesn't matter what band is selected on SunSDR2 DX, all band works.
QRO:
SunSDR2 DX <==> ACOM 1010 <==> LDG AT-1KPro2 <==> SWR PWR Meter <==> EFHW UNUN
SunSDR2 DX <==> ACOM 1010 (Additional keying cable - DB15 to RCA)
1. Put Amp to STBY (Bypass) or Click on
PA on EESDRv2 or v3 to OFF it.
2. Click Tune on EESDRv2 or v3(Software), sends a tone from SunSDR2 DX
3. LDG AT-1KPro2 would auto tune (If set to auto mode)
4. Press and hold LDG AT-1KPro2 Tune Button (If set to semi-auto mode)
5.
Reduce PWR on SunSDR2 DX (You might get PWR spike on 1st TX)
6. Put Amp OPER and ensure to Click on
PA on EESDRv2 or v3 to switch it ON***
Doesn't matter what band is selected on SunSDR2 DX, all band works.
Feel free let us know if you need further clarification. I asked a lot and at times felt like an idiot. Still got my DXCC lol!