Topband: Isolated F81 F Barrel Connector

[Paul Christensen]

Google isn't my friend today...

I am looking for an isolated "F" barrel connector, commonly known as the
F81.  I am designing an aluminum interface plate for use with a Hi-Z
8-circle receive array.  The panel will contain multiple F81 barrel
connectors that attach to the side of a large PVC tool box with gasket
weather seal.  An isolated F81 is probably a very odd item since it's a
connector that's not normally used for baseband signal distribution like
video and data.

Each of the RG-6 lines run into a Hi-Z switched phasing box where each line
is connected to a toroid transformer.  As such, measuring resistance from
the ground of one antenna port to another shows about 30 ohms resistance,
necessitating isolation at my connection plate.  The Hi-Z phasing box is
made of PVC material and each antenna input is isolated by virtue of the
plastic box.  

In the alternative, I could use isolated BNC or TNC connectors with F
between-series adapters.   Insulating each F81 with its own insolation strip
is definitely not an option in this application.  The last option is to run
all lines directly into the large box and make a direct connection to the
Hi-Z phasing unit.  However, I would really like the option to disconnect on
the *outside* of the box so that it can be quickly wheeled in for
maintenance.  

Thoughts?

Paul, W9AC