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Power Supplies
We all need power supplies.  Radios need power .  Auxiliary equipment need power. Some equipment needs power from the 220 or 115 VAC lines in your shack.  Others need 12 VDC power.  We need an adequate number of AC outlets to power our equipment.  We also need DC power supplies and a distribution system to power some radios and a lot of our auxiliary equipment.  And we need to provide good AC and RF grounding along with lightening protection grounds.

There are a number of ways to go about it.  None are sexy or even exciting.  But for anything but the most basic setup, it is something we should think through and engineer for adequacy and safety.


The first question is how much is enough.  It's usually more than you think.  And you should consider growth.  I though I did but no, I missed the boat.  I knew that I had two radios, two amplifiers, and a fair share of auxiliary equipment.  So before doing anything else, I had a licensed electrician install four 220 VAC outlets and two dedicated 115 VAC outlets.   These AC outlets connect to dedicated circuit breakers in the house's main electrical panel.  Now, 7 years later, I found that I needed more of each.  I unplug one of my HF amps during 6 Meter season to keep on six.  Bottom line - decide what you need and double it for the future.
We also installed a heavy duty connection that goes directly to the home ground bus.  It also connects to an outside ground rod and to the entry panel for coax lines. 

The above image shows the 220 VAC, two of the 115 VAC, and the ground connector on the right hand wall.  The other 115 VAC outlets are on another wall behind the operating desk.


I also needed DC power supplies.  Two for the transceivers and others (three more) for all the auxiliaries.  Some, as shown in the image on the left, are on a bench under the operating desk, the others are on the shelves holding my amplifiers and other equipment.

As my quest for additional shack automation and capability grew, I found I needed even more power outlets.  Now, with three amplifiers I have to unplug one of the HF amps when I want to operate 6 meters.  And I needed a method for distributing DC voltage for all the other stuff.  And so, what was a nice neat installation six years ago has become a rat's nest of cabling and distribution boxes.  I should have thought ahead more.

Bill Axelrod 12 April 2017