Quote:
Originally Posted by WM6
Yes, low effective antenna, nothing else. Maybe without such antenna only by resistive end you can reach the same "Sphere of action". Those antenna act only as TX output load to prevent Tx damage not as real and effective VLF/ULF antenna..
It is understandable that no one can build effective resonate antenna for wide Tx range of 7Khz to 60kHz. Practically impossible.
And why one need such wide frequency range? This is not working on VLF/IB or BFO principle where are some differences in detecting between frequencies. Here not, except partially in the immediate vicinity of target, but we are asking for some remote detecting. Here you need only one frequency say between 10-30kHz and resonate Tx and Rx antennas to selected frequency and as good as possible directivity of Rx antenna.
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I know that my gold gun AL707 receives in 19.6khz and also in another two lower freqs but how can I accurately measure the frequency myself WM6?
I think I have to verify the receiving frequencies myself first before I will see about the transmiter.
Thanks for helping.