​The prices do not include 24% Greek VAT applicable only to individual buyers from European Union. 

MODIFICATION There is a modification for higher currents, for not letting the current to pass through the ON/OFF switch. The PCB terminals of the switch (its original place) are shorted with a piece of wire and the switch is placed in series with the D2 diode. See the last chapter of this document.

Fig. 4

Fig. 3

Built & Tested Module

Fig. 4

Complete KIT DIY

12 V DC-Power Distribution PCB Module Complete KIT EUR 10.57

12 V DC-Power Distribution PCB Module Built & Tested EUR 15.57

Christophe , F1JKY's description in French is available here http://f1jky.fr/bidouilles/Protect_Dispatch_PS/Protect_Dispatch_Power_Supply.htm

You can buy the KIT from his website too. If you are from France, It is cheaper than from my website because of the postage.


for a complete KIT as shown in the Photo at left or for a Built & Tested Module as shown in the photos above,  at EUR 10.57 or EUR 15.57 + s/h.

The shipping cost is EUR 4.00 for total orders value under EUR 9.99, EUR 8.00 for total value under 49.99, EUR 12.00 for total items value under 99.99, EUR 16.00 for total value under 199.99 and free for total value greater than EUR 200.00. The shipping is with registered mail  (your signature is required upon delivery). I usually ship the next day and it takes about a week to 10 days for USA or Australia, less than a week for Europe.​
Press the "Add to Cart" paypal button and order safely through your Paypal account.

Fig. 3

12V DC Power Distribution Module

​   With ON/OFF switch, 

   Power Relay,

   Fuse and ​​by-pass jumpers

   8 + 8 terminal blocks for DC Output with reverse        polarity protection

​​​​My friend in France, Christophe, F1JKY, was building his 10 GHZ transverter project and had many modules inside, receive converter, transmit converter, power amplifier, driver, etc. all needing 12V DC power.

Instead of paralleling all power cables together, he developed this small PCB with terminal blocks for the plus and minus posts, for easy connecting or removing individual stages and modules. In addition, he has placed a general on/off switch with a series power relay, a fuse and an LED. The relay contacts and the fuse can be by-passed with jumpers if they ever fail during that rare DX. Now, if his transverter fails when in portable operation or during an expedition to a mountain, he can quickly and easily replace modules without needing desoldering power cables inside the transverter. It also offers a degree of reverse polarity protection on the output, i.e., if you connect your load or your battery in reverse polarity, diode D2 will not let the relay to switch, the LED will not light and until you understand your mistake only the fuse can get blown.  

As we thought this small PCB module can be useful to other fellow hams, I got involved and produced a number of DIY KITs to make them available to anyone interested. It is offered as a KIT of components or ready built and tested, but it is very easy to solder and test it in virtually any ham shack or kitchen table, since there are no any SMD parts, not even a double sided PCB and only a soldering iron is needed.

​The PCB dimensions are 6.5 x 5 cm (approx 2.5 x 2 inches) and is fabricated in a good factory with markings on top and bottom to aid assembly by hand without problems.