AMANDX PRESENTS


SIMPLE ANTENNA SWITCH


I wanted a switch box that would allow me to go from one antenna to another without having to disconnect the antenna from the back of my receiver.
It had to be economical, easy to build, and effective.
I came up with the idea of a box using banana jacks because they were simple to work with.
Now, what to mount them onto? I settled on a PVC plastic box used by electricians.
They are inexpensive and easy to drill into. This set up would allow me to put six jacks into a box and bolt it down via the bolt holes already moulded to the box.
All you need are the following:
1 - PVC box, about 4-5 inches square and 2 inches deep 1 - 20-foot length of wire 6 - Banana jacks (or substitute of your choice) 1 - Banana plug (or substitute of your choice) 2 - Screws to mount the box STEP 1 Map out where you want to put your jacks, ensuring you leave enough room to mount them.
Then drill the six holes in the face plate you have marked.
Drill a hole on the top of the box to be able to draw out six wires from inside the box for leads from the jacks.
You can also drill six holes on the sides of the box below each hole you have on the top.
STEP 2 Mount the jacks onto the box.
Make sure they are on tight.
Cut six 2-2-foot long pieces of wire and strip off about one inch of the coating from each end.
Solder one piece of wire onto one individual jack.
Repeat until you have all six wires soldered onto separate jacks.
This will ensure no crossover from one antenna to another.
You may wish to label each wire from 1 through 6 so when you are finished, you will know what belongs with what.
STEP 3 Feed the six wires through the large hole on the top of the box (or out the sides if you went that route) and seal it back up.
Mine came with four screws that were removed to open the box up.
All you have to do is mount the box and attach your antennas, one to each lead.
Take the banana plug and attach it to the left over wire and fit the other end to your receiver. You are all set to go.
To switch from one antenna to another, all you have to do is move the plug from one jack to another. This also allows you to keep a good match on your antennas. Using a 50-Ohm coax switch, with a long wire of several hundred Ohms, can cause a mismatch. This gets more of the signal to your radio for less money. Like I said, Economical, Easy and Effective. I hope some of you find this of use. By the way, going from one antenna to another on this is easier than going around and around on a switch that will wear out from such repetitive motion. If a jack or plug wear out on this model, you replace one cheap part instead of a switch in its entirety.





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