Another PPP (PowerPole Project) I just finished this weekend.
My KX3 may run a bit hot when I operate at 15W continously, while sitting in the sun, so I carry a little fan (smaller than adding a heatsink to the KX3, and I can leave the fan at home if I don’t need it, like in winter).
Now my batteries have only one PP output, so I made this little “splitter” gizmo … at the same time adding a linear 5V regulator (no RF noise !).
I need 5V for charging my phone or digimode tablet, running a WSPRLite, my KX3 memory controller or Arduino text reader, and what else I may invent that runs on 5V.
I do have two USB outputs (old PC motherboard connector at the right in the picture).
Total current is limited to 1A, so of course, I won’t be able to use all accessories at the same time, but it saves me carrying a seperate powerbank for all that 5V stuff.
One of the outputs is direct through, this one is for the KX3.
The other one is switched, so I can use the fan if needed without fiddling with PP connectors in the middle of an activation. Could also be used to switch an external amp or transverter ON or OFF.
Clever people will notice there are no fuses inside, but rest assured, I have fuses on all of my my battery packs, and then … no fuse means I never will have to replace one … hi.
I closed the box with superglue … so it is not meant to be opened again,
The box used to house an external phone modem for a laptop, and measures only 9 x 3 x 2.5 cm
Now back to packing my suitcase for Gran Canariaaaa !
73,
Luc ON7DQ