After my success in getting more current into the aerial yesterday I
decided to measure the RF current in the link (link coupled ATU) with a
proper RF ammeter. I was somewhat surprised that the current pinned my 1
Amp RF meter. How can that be? I can think of some possible reasons:
1) The meter is wrong (it must be nearly 70 years old)
2) The impedance is not 50 Ohms which is odd because I assume the TX is
designed to have a 50 Ohm output and I carefully adjusted the link for
maximum power transfer last night).
3) The transmitter is giving out far more power than expected (seems
unlikely).
Any ideas?
Incidentally, am I best to measure current in the link or in the aerail
wire?
73
Richard
PS - beacon on again 501.6kHz.
|
