Don't really know. I'd have to open the box I packed it into to find out. I just know it works. The radio has two antenna jacks. One for each band. So to use an dual band antenna, you need the duplexer. I imagine that there would be some insertion loss in use. I didn't notice it. I can hit the same repeaters with this as I do with my current rig.
what brand is this duplexer?
Don't really know. I'd have to open the box I packed it into to find out. I just know it works. The radio has two antenna jacks. One for each band. So to use an dual band antenna, you need the duplexer. I imagine that there would be some insertion loss in use. I didn't notice it. I can hit the same repeaters with this as I do with my current rig.
Did u sell this?
How much is your TM 733??
500 usd