Thank U Allison, that was very quick off the mark, very much appreciated.
I have used relays for voltage free keying of the BLA-350 and for keying the QRPLabs 10W Linear as the most flexible and blow-up-resistant method,
The HL2 provides an OC keying output, and I currently use that to drive an opto-coupled relay to key the BLA-350, I know that most people just run the EXTTR connection from the HL2 into the PTT input of the BLA-350, but for the sake of approx USD 20 and a little soldering time, I prefer to have a fully isolated connection to protect my precious HL2 !!
Once again, thank you
Peter - GM8JCF
