Tinkertek
Member
Hi,
I have an FM boom box that has the telescopic antenna. I added an external antenna jack so that I can use something like a wideband scanner antenna on it. My FM radio reception in the house is not great, but I think I could do a little better by going with a magent mount scanner antenna attached to a metal filing cabinet. I know an outside antenna would be better, but that is not really possible in the room where it's located.
So, I pulled apart the radio and simply soldered in an F chassis barrel type connector. Center conductor goes to the wire that used to go to the telescopic antenna. The shield goes to ground. I then attached the scanner antenna to the radio (the RG59 coax had an F connector on it). The reception did indeed improve somewhat.
Question, should I have used a 75 ohm to 300 ohm matching transformer inside the radio where I soldered in the connections? I wonder if that may have improved it even more? I have no idea what impedance I'm trying to match.
Ideas out there on this?
Thanks,
Paul
I have an FM boom box that has the telescopic antenna. I added an external antenna jack so that I can use something like a wideband scanner antenna on it. My FM radio reception in the house is not great, but I think I could do a little better by going with a magent mount scanner antenna attached to a metal filing cabinet. I know an outside antenna would be better, but that is not really possible in the room where it's located.
So, I pulled apart the radio and simply soldered in an F chassis barrel type connector. Center conductor goes to the wire that used to go to the telescopic antenna. The shield goes to ground. I then attached the scanner antenna to the radio (the RG59 coax had an F connector on it). The reception did indeed improve somewhat.
Question, should I have used a 75 ohm to 300 ohm matching transformer inside the radio where I soldered in the connections? I wonder if that may have improved it even more? I have no idea what impedance I'm trying to match.
Ideas out there on this?
Thanks,
Paul