![]() I simply tape mine to the wall of the shack, you can string yours up however you like, or make it positionable, etc. The WiNRADiO WR-1550e hardware/software package consists of the receiver unit, Windows-based software, RS-232 cable, multi-voltage power Adapter, start-up antenna and a users manual. It was actually cut for the harmonic mean of 88-108 MHz (96.980 MHz, 3.091 metres) and resonated carefully with a VHF dipper, but this is complete overkill, an untrimmed 1.5 metres of twinlead will work just as well. ![]() The antenna works fine and has plenty of bandwidth for the FM broadcast band. The ADT1-1 was small enough to slip down inside the BNC plug, so I simply potted it in epoxy inside the plug and put some heat-shrink over the works to hold the TV ribbon in place. A commercial ADT1-1 minicircuits transformer was used, but you could just as easily use a ferrite bead to wind your own or buy a commercial TV balun which is essentially identical internally, but terminates in those terrible TV plugs rather than a BNC. ![]() As the radio has a low input impedance (50 Ohms nominally) I built a quick 4:1 balun to match the 300 Ohm balanced feeder into the lower impedance (ignoring the minor 75:50 Ohm mismatch). ![]()
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