Name Jan Stadman
QTH
Beesten, Germany
Locator JO32RH
4-square info
Band 80m
Jan says......
Around May 2013 I started building my 4 square for 80m. I ordered a PCB
from SJ2W and then started to get the parts together.
Basic construction plan was the webpage of Patrick TK5EP. Furthermore I decided
I wanted full size quarter wave aluminium poles with ground radials.
I had a large amount of guy wires available so it was an easy choice to use
them. The aluminium poles are guyed in 4 directions on 3 levels.
At the end of September 2013 I had all parts ready and the contoller and
steering box worked and tested.
My next door neighbour helped me with the aluminium poles and I decided for
19,7m (64,6 Feet) length.
Now I would use 19.85m (65,1 feet) to be more in centre of the 80m band. CW
switch boxes are under construction.
I have a special plate which holds 2 steel pipes in a 90 degree angle one
holding the mast and the other for the pull-up mast.
Use always 2 additional wires to keep the pull-up mast straight in the middle,
forgetting this caused the plate to be pulled up instead of the mast.
I put the aluminium poles together and my wife helped my to pull up the first 3
and the last mast was pulled up with the help of my friend Marcel PA9M.
The 4 square is running really wonderful on 80m. USA West coast via long
path or Pacific in afternoon (16:00Z) and Arizona in early morning (06:30z)
Still improvements are possible but for the first winter I am really happy.
Jan DJ5AN
Power into the dummy load tests at DJ5AN
1 Radial plate with mast already on a nylon insulator and with overvoltage
protection.
2 80m 4sq test with help of the cat.
3 80m 4sq test with phase cables and dummy loads.
4 80m 4sq 90deg phase shift.
5 80m 4sq homemade coupler with SJ2W PCB and DF6QV controller.
6 80m 4square in the garden