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Ham Radio

Antenna entry point

[Today’s run:  out to the highway and back (2 miles) with the dog ]

Here is a picture of my antenna feed into the house.  It is the old double-sash window trick.

I’m using about a five inch wide piece of particle board cut the same length as the window opening.  Since this means the window cannot be locked, I put some more wood blocking up at the top of the sliding section.  And I stuffed some junk into the space between the window panes.  I suppose if someone wanted to pull down the upper sash they probably could get in.  But they could also break the glass if they wanted in that bad.

The multi-conductor connector is for the rotor cable.  I use a black Radio Shack project box to mount  the 9-pin (?) Radio Shack connector.  The cable comes through a hole in the wood and the box.  I wanted to keep the bugs out and I couldn’t mount the connector directly to the wood, so the project box was an easy way to go.  I flubbed with my first attempt at a square hole in the project box.  I covered that up with black duct tape.

I have 4 UHF feed-through connectors:  1 for a vertical 144/440 Mhz on a pole near the house, one for the G5RV wire, one for the HF beam and one for the 144 VHF beam.  The last connection on the right is a feed-through to a ground rod.

On the outside, the particle board is partially covered with a copper sheet.  The UHF feed-through connectors all go through the copper.  I have an 8 ft ground rod connected to the copper sheet and the ground feed-through into the house.  The only thing not really connected to the ground is the rotator cable.

If we leave the house for any length of time I disconnect the rotor and antenna cables here.