Tuesday 29 October 2019

XT 60 on ft817


I like XT 60 connectors. They are rock solid, work up to 60A and impossible to pair the wrong way. 
I always cut the original power cords in the middle and insert a pair of XT60. That is the standard connector in my system for 12V.

I found it on thingiverse https://www.thingiverse.com/thing:3551608 .
A good friend of mine Gabor HA7AST printed it out.
I used some hot melt glue inside... (it was too hot, so I had to put the whole stuff into the deep fridge for a while.
The result is something I really like.
I do not have to struggle with the original connector, I can use my standard XT60 plug.



Saturday 12 October 2019

Z-817 mod

I live in a suburban area, where no antennas allowed. I need to go stealth, just under the radar.
I mainly work from the park, or hilltops, but sometimes it is good to make few contacts from home too.
Small vertical can help a lot, but on the lower bands it is not so effective.
I recently got a Z-817 from LDG. I had it before and liked it so much. It is an L match tuner, works up to 600ohms. In fact it is only effective up to 300ohm. Of course it works in the range of high impedance, but only with compromises.

My mod helps it to be a bit better.

I installed a 1-4 and 1-9 un-un into the box. They are selectable with the two switches on the back board.

The difference can be several dB on the field meter.

I also changed the GND connector, because I use banana plugs.
There is an RCA connector for remote and a switch to prevent it to drain the batteries in the backpack.

The transformer is a standard one with 42 material core.