Scannermaster Co-Phasing harness system

[JPDx353]

Was wondering if anyone has actually purchased one of these units ,from Scannermaster and have evaluated it's performance? Was looking into this an an option since my monitoring needs requires both Hiband VHF and 700/800 Mhz on seperate antennas. I need 3 yagis in 3 different directions. Not looking for any debate on the principle of these devices, but actual use by a member. The use of say 3 antennas to one low loss coax feed to my multicoupler would be nice.
Thanks, Dennis.

 

[laidback]

This is what I use :


PRACTICAL ANTENNA DESIGN - N5DUX
https://www.n5dux.com › ham › files › pdf › Prac...

PDF

Near the end of book, studies concernng Phasing.

 

[prcguy]

The ScannerMaster thing will not do what you need and it would only be good combining two identical antennas on the same band pointed in the same direction. Either ScannerMaster or the "extra class ham" that is making it has no clue what a co-phasing harness is or how to use one. Trying to combine a VHF, 700 and 800 Yagi using one will have losses from the method used and also frequency spill over between a 700 and 800MHz Yagi pointed in different directions but possibly both picking up the same signals out of phase.

You want a diplexer or triplexer but the problem I see is there is no practical way to combine a 700Mhz Yagi pointing one direction and an 800MHz Yagi pointing a different direction on the same coax. That would require a custom diplexer or triplexer with very tight filtering.