The new earth is installed to my room now, but I am still working on my old aerial. (Which is about 10 m of RG58 coax with centre and braid connected together.)
Tests are confusing, on one radio the new earth works best, on another the mains earth, (CH pipe) works best.
I had the idea of trying the ATU with a signal tracer amp, no detector needed, just connect the little amp to the output of the ATU.
About 5 stations were tuned individually, the CH pipe gave the loudest reception.
The resistance from the CH pipe to the new earth is 160 ohms.
There is 83mV dc and 43mV ac between the 2 earths.
I will carry out more detailed tests later, and note the conditions and responses, but the radio which worked best with the CH pipe earth was a KB LR10, AC radio with only 2 core mains cable, there tended to be more interference with the new earth. Odd or what.
The ATU seems to have very little effect when used with a transistor radio.
Mike
Tests are confusing, on one radio the new earth works best, on another the mains earth, (CH pipe) works best.
I had the idea of trying the ATU with a signal tracer amp, no detector needed, just connect the little amp to the output of the ATU.
About 5 stations were tuned individually, the CH pipe gave the loudest reception.
The resistance from the CH pipe to the new earth is 160 ohms.
There is 83mV dc and 43mV ac between the 2 earths.
I will carry out more detailed tests later, and note the conditions and responses, but the radio which worked best with the CH pipe earth was a KB LR10, AC radio with only 2 core mains cable, there tended to be more interference with the new earth. Odd or what.
The ATU seems to have very little effect when used with a transistor radio.
Mike
