Very interesting post Astrodetect.
Myself used to have a transmitter and a receiver to go on target.
Don't ask me about operating frequencies because all I know was that it was RF doing the job.
After transmitting the signal for about 15mins we were able to go on target using a portable receiver.
This was the only LRL that we used whith success.We found many things burried in a short period of time while using the receiver.
This method works for sure no matter of what anybody says and it is not difficult to use.Maybe is difficult for an electronics man to build and I beleive it is.
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