Hello all,
I’m building the diy antenna as described in http://martybugs.net/wireless/collinear.cgi , DIY external antenna for gateway and https://www.thethingsnetwork.org/labs/story/homemade-outdoor-868mhz-antenna. I do have a couple of questions:
- Is it useful to add a groundplane by adding three or four down pointing sticks?
- My antenna N-connector is not connected to the metal rod holding my antenna because my antenna is constructed with a PVC holder. Is that a problem?
- The last segment just says “< 3*lambda/4” and I take about 5% less. Is there an accurate calculation available or does it not matter that much?
- Is there anybody in the region of Zaanstad where I could test my antenna? Radius of about 30km is ok for me to drive.
Thanks,
Milo van der Zee