Power Pole Distribution Block

Now that my station has grown, I have quite a bit of equipment that requires 12-14Vdc of power. In the past couple of years I decided to start using Anderson Power Poles. I decided to use them as it’s starting to be the standard of some organizations and It’s easy. My only complaint that I would have is that sometimes the connectors can loosen up and doesn’t require much force for them to come apart.

At this point I have a very minimal setup that needs to be expanded. I have a pigtail off the power supply and set of power poles on each device. If I wanted to use one device, I would have to disconnect power from one device and put it on another.

The obvious solution to my problem is the use a distribution panel. There are some commercially made panels that use Anderson power poles but being the cheap ham that I am, I figured I can find a cheaper way.
While at a local hamfest this past weekend, One of the vendors had a bunch of products that use the Anderson Power pole. Two of those products has caught my interest. One of the was the “EZ-Gate” by ham source and the other was distribution block by Quiksilver. The EZ-Gate is similar to the PWR-Gate by West Mountain Radio but doesn’t have LEDs or Fuses. The EZ-gate is half the cost of the PWR gate and this would allow my station to instantly switch to battery backup during events like field day or when the power goes out in my house.  The power distribution block was just a simple 4-way connection using power poles and priced at $20. I thought the price was fair but I thought would be cheaper and fun to make my own at home, For the price of one block, I decided to get  twenty pairs of power pole connectors.

Having no clue how the little distribution blocks were made,  I thought of way that I think it was done with the commercially available ones.  I used 12ga soild copper wire to connect everything together.

20130302_215456

Here is a photo of what I started with and the final product.

I cut 4 wires about 1.5″ long and placed the connectors on each end and did a quick assembly to check the gap between the sets. I wanted the gap to be short as possible so the entire block would remain rigid. I also cut and bent two additional wires to act as a “link” to the top and bottom sets.

20130303_074623

 

Here is one of the wires that I crimped the ends on. After crimping I soldered each end to make sure of a good connection. Please note that the connectors on each wire are opposite angles from the other side. At this point I installed the wire and marked the location where the link will go with a sharpie.

20130303_075202

 

Two of the four wires, I soldered one “link” favoring one side of the wire.

20130303_075927

 

Here it is halfway assembled. you will notice the link on the positive side very close to the connector. When the other side will be installed, the other link will be close to the negative block on the opposite side.

20130303_080511

 

Before connecting the other side, I used a pair of pliers and curved the links around the top stack of the link.

20130303_080956

 

After completely soldering the links and installing the other end, I wrapped the positive side in plastic. If I were to do this again, I would solder, install heat shrink tubing both leads and then install the other set of connectors.

For what I would have paid for ONE commercially produced block, I’ve made two blocks and had and also have an extra set to make a patch cable or pigtails/adapters.

It’s no rig runner but it works and does what I need it to do.

Thanks for reading!

 

Please stop the Noises! STOP!

Ever since I moved to my house I always had noise in my receiver. It wasn’t loud enough for me to care until now. For the past couple of months the noise has been real bad. Bad to the point where I didn’t even go past 20m (14mhz). I Figured when Field day comes around I will be able to see if its something with the radio. I turned on the radio at field day and the noise was still there. I was upset that I was going to have to ship my radio to YAESU for repairs. That is until someone turned off the light that was 3ft near the radio. THE NOISE IS GONE!!! YES!!! Found out that the cheap-o CFL Bulb (or it’s ballast ) was causing the RFI. I thought that this might be the same cause at my QTH. So after field day I setup back home and tried the radio without the lights. Noise was still there. Today I finally got off my ass and started to track down what was causing the RFI. I went to cellar and turned off all the circuit breakers except for the room which the FT-950 is in. The noise is still there. I unplugged everything in the room except the power supply and the Noise was still there. At this point I took a TV car battery (sealed) and hooked it up inside. The noise is GONE! With the process of elimination, I found out that the power supply was to blame. Back when I purchases the FT-100, I Moved the power supply close to the radio so I could power both the radios.

The power supply that was causing the RFI is the SAMLEX SEC-1223. I googled the model number and there were numerous sites that mention the RFI that power supply generates.

Two sites that stick out when it comes to getting rid of the noise are
http://www.n0ss.net/PDF

and

http://www.oz1db.dk/samlex/start_eng.html

ZL2DF used ferrite beads and ceramic disk capacitors  (about US$10 for part modification) placed right before the output terminals  and OZ1DB used two 1.5uf 100V Capacitors ( US$ 3) on the output terminals