Pulling RF off the H-amp?

[Einar]

I would use a balanced amp. Opamps are cheap. With a balanced amp you are less likely to get in trouble with noise on ground since ground is not a reference potential. Ground noise can affect the signal you tap off, but worse is that it can sneak back into the BO system.

I'm a trouble shooter, and you would not believe how many problems we pin down to people believing that ground is the same in a system of connected devices.