I am completely new to SWL. I have recently picked up a FRG-7 from
ebay in mint condition and unmodified. I have had a little trouble
initially picking anything interesting up and I am a little slow
understanding antennas. I saw and won a FT-770 on ebay and was told it
will work with any reciever. What are the Red, Grey and black wires
for? are there any websites anyone can recommend to expain how it is
used.

Any help would be appreciated. Thanks.

Ian