Station Ground with KF7P Entrance Panel

I met Chris Perri , KF7P, at Hamvention, Dayton. Chris of KF7P METALWERKS has great web site offering well-made entrance panels with copper sheet ground-bus sheets and grommet-fitted entry holes for your coax, etc. The box comes in several sizes and Chris offers powder-coat finishes in many colors. The powder coat is superior to a paint finish. The material is electrostatic sprayed onto the box and then bonded in an oven by heat curing.

This is a more durable finish that should hold up well. The box is just part of a complete system comprised of entry fittings and surge protectors – all available on his web site:


A two inch opening at the rear of the panel accommodates conduit and fittings for a professional termination – the conduit extends from inside the panel through the wall into the shack for a very clean professional installation where cables can pass smoothly from the shack to the panel.

Inside the panel the coax connects to the surge protectors and from there out the grommet-fitted holes to the antennas. The Alpha Delta Transi-Trap protectors mount directly to the copper plate.

The copper plate is grounded via a 2 inch copper strap which passes out of the panel via thin slots, cut just for the strapping at the bottom of the panel…a very convenient feature. The strap exits the box and is attached to ground rod(s) which are driven 7 feet into the ground.

The station ground is also grounded through the entrance panel. In the shack, I have a large copper ground bus where everything in the shack is connected to – radios, tuners, panadapter, SignaLink – you name it! Ground BusFrom the interior ground bus I have a 1 inch copper braid strap that passes through the 2 inch conduit into the exterior panel. The copper braid is firmly attached to the copper plate. All connections have anti-oxidant/anti-seize compound generously applied. The compound selected depends on the material – copper-to-copper or copper-to-aluminum.

Finished Installation pictures:

Interior ground bus with 1/2″ braided/tinned copper to components in the shack:


1″ braided strap from interior to exterior panel:


Coax to Transitrap surge protectors – mounted to copper plate and Coax from Transitrap to antennas:


Plenty of room to add feed lines! Entrance panel copper ground plate with copper strap to ground rod:

Copper strap exiting the panel to ground:Ground Strp to ground rod – 7 feet in ground:


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