Monday, 19 November 2018

Low band

Nothing new on 70cm builds but I did put up my 80 m 1/4 vertical last week.
Its 20.5 m high and I did put out 80 radials 20m long and some 40m long ones too.
Have a tuning box in the bottom where I tune it at 3.79 and also a switch and a second matching net to allow operation at 3.5 as well.
Have an additional net for 40m but I have not put it in yet.





















Have also spent some time building and trying to communicate with a OE5JFL controller I got a PCB to from SM7FWZ some time ago.
The board is based on ON4BCB design.
http://moonbouncers.org/Orebro2017/ON4BCB%20OE5JFL%20diy.pptx

I cant communicate with the controller but I think it is a faulty RS232 circuit that causes it and I have ordered new ones so I can continue.
The board only have TTL serial signals so I built a converter with a MAX232 but it seems to not react correctly on one channel so I hope exchanging it will help.

The new amplifier on 70 is slow progress.
Got the controller working but need to get it all in the box and connect it together and to make the 24V regulator and switches.

Besides from that I waiting for the rain to stop and higher dec. so one can work and also the last ARRL part.

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