We have/had absolutely tons of gear from the "old days" in audio production and here is another little gem found in a box of bits and pieces.
Wireless Diversity Antenna(s)
Model: MGA-4000
Now the first thing that jumps out about this system is that instead of an RF connector (e.g SMA etc) this uses 2x 3.5mm mono plugs...a bit unusual.
Base/antenna unit measures: 170mm long x 70mm wide x 70mm high
The coax is unmarked, no idea who made it and what the impedance is but I would assume it would be around 50 Ohms.
The coax (twin - figure eight style) is LONG - each antenna has a 6 metre cable to the plug(s)
The versatile part is the antenna itself.
The mounting uses industrial velcrose on the bottom and also the side so this easily attaches to a cloth covered wireless system case.
The base moves through 90 degrees from the horizontal AND one of the telescopic antenna's also can be adjusted through 90 degrees. All movement is spring steel step controlled which means when you set a certain position, it will stay there.
Only one telescopic antenna is moveable, the other can have the direction changed.
Both telescopic antenna's extend out to 36cm when fully extended
I have made DC resistance tests and established that the tip of each plug goes to one telescopic antenna. The ring is earth or common, actually via the metal base of the antenna's
It would not be a difficult task to change the 3.5mm plugs to another type more suitable for your equipment although effectively here there is 4 antenna's - 2 on each side.
The build of the antenna mounting system is very good, sure some top cover plastic but the rest is nice solid metal and it is built to withstand the rigours of live gigging.
CONDITION: Very good to excellent
DC resistance tests all ok
No damage to the plugs or the coax
Both telescopic antenna's move smoothly (5 section each) and stay in position - no "wobbles" that you get with worn telescopic sections.
Adaptable to suit a variety of wireless microphone systems.
