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Cabling & Control Wiring

Not knowing what it will take to switch two radios back and forth between antennas, one linear, etc., I tried to envision what would be needed. After about 7 years of trying different versions, I finally found something which suits me. It does not do everything I originally wanted to do, but, over the years I have discovered that I did not need everything I thought I wanted!

I have capability to use three radios, with two radios being active at any one time. Of course, I only have two radios, but that's beside the point!

First, you see the antennas and the cables from outside the house to the inside. I have surge protectors and grounding as many places as I can, for safety's sake.

ShackRFCabelingSwitching


Everything is controlled via 12 volt switching. I use home-brew antenna relays which do not add very much loss in line. All switching is accomplished with a home-brew programmable microprocessor unit which has an Arduino Mega 2560 at its heart. (See ARS Controller). Below is the the flow chart of the RF cabling:

ShackRFCabelingSwitching1


Now, if you think this is complicated, you have to understand that there is also AC wiring and DC wiring as well as Audio wiring to consider (see pictures of behind my radio desk!). Below are the flow charts for my AC, DC and Audio wiring:

ShackACWiring


ShackDCWIRING


Below is some wiring detail for the digital displays of the various voltages and currents in my shack:

DCDigitalReadoutWiringDetail

The isolated Patch Bay in the audio line is a rack mounted series of 8 transformers. It isolates all units for elimination of hum. This is receive only audio. My transmitter audio is separate from this and can be found elsewhere on this website.

ShackAudioWiring

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