|G3BJ RX antenna isolator|
The half size K9AY RX antenna is close to my TX doublet [about 5m]. There does not seem to be much power coupled into the RX antenna when I transmit with 100W on 40m. I measured the DC rectified voltage on a dummy load connected to the RX line at approx 300mV.
|Testing RX antenna isolator with 817 and a dummy load connected to TX.|
The Aluminium boxes by Bitbox are inexpensive and easy to work with. I might box in them some of my other kits [BBGen,...]
Many thanks to Don G3BJ and Simon M0VKY for sharing this.