Your estimation is correct.
The internal diplexer in the SWM8 has proven dissapointing to many. If you have the option of running a coax from the antenna to the power inserter location, you may get better results by diplexing the signal in at that point (at the output of the PI).
There is a thread here someplace that specifically discusses diplexers and splitters, which are good and which are lacking. A search should produce that for you.
As to the installer, my suggestion would be to get the setup running without any diplexing during installation. Once the installer leaves, do your diplexing.
The SWM does have flexport inputs for the 72.5, but I'm not aware of anyone who is doing that. It should work. Your SD locals will be off of 72.5 before the end of the year though and you will get them from 99 or 103.
Carl
The internal diplexer in the SWM8 has proven dissapointing to many. If you have the option of running a coax from the antenna to the power inserter location, you may get better results by diplexing the signal in at that point (at the output of the PI).
There is a thread here someplace that specifically discusses diplexers and splitters, which are good and which are lacking. A search should produce that for you.
As to the installer, my suggestion would be to get the setup running without any diplexing during installation. Once the installer leaves, do your diplexing.
The SWM does have flexport inputs for the 72.5, but I'm not aware of anyone who is doing that. It should work. Your SD locals will be off of 72.5 before the end of the year though and you will get them from 99 or 103.
Carl
