Sounds like someone hacked it up pretty good if the tank circuit was missing and 10 meter FM got into your phones. FM never gets into the phones because there is nothing in the phone that can demodulate FM as it could AM or SSB. The only reason other modes get into the phone is because of the varying amplitude that can be rectified and detected within the phone.
PS: Did the power supply whine come through the land line?
PS: Did the power supply whine come through the land line?
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