Glenn,
Thanks for the data. I will be looking out for PIN suitable for the TR-7 for my spares draw.
The three 1N4007 I substituted for the RX input / TX drive steering PIN on the HPF board are working OK, but I have made no measurements of the impact of their higher capacitance. A small relay might also make a good substitute for very expensive / unobtanium PIN. They are cheap enough, but parameters of particular interest to RF engineers are not usually specified, so it would be a case of suck it and see!
Regards,
Mark, G4FPH.
