Loading
Way

Helix antenna for Outernet

by Way May 10, 2017
Download All Files

Thing Apps Enabled

Please Login to Comment

That is so cool!!!!

Do you have any more information we can use to setup our outernet?
Disregard...found something https://github.com/Outernet-Project/orx-rpi
https://docs.outernet.is/DIY%20Kit%20User%20Manual.html

Be careful, because Outernet is changing the frequency, so I don't know if this antenna is still will working well.

These are the frequencies I saw last

I-4 F3 Americas at 98°W covers North, South, Central America, Pacific and Atlantic Oceans.

Outernet Frequency: 1539.8725 MHz

Alphasat at 25°E covers Europe, Africa, Middle East, East Asia, Atlantic and Indian Oceans.

Outernet Frequency: 1545.94 MHz

I-4 F1 APAC (Asia-Pacific) at 144.0°E covers Asia, Australia, Pacific and Indian Oceans.

frequencies
Outernet Frequency: 1545.9525 MHz

Nice design! I would think your SNR would be much better. I made a helix out of a 2" PVC pipe and lots of hotglue. It is half the length yours is and I am getting 10-11 SNR. Did you check your plastic material for RF absorption? Put a sample part in a microwave oven, with a cup of water, for 30 seconds. Does it get warm? If so, something in the plastic material is absorbing RF.

Interesting, but You use standard LNA and L-band SAW filter from Outernet shop? Because I used only one LNA4All, that give me 16dB of gain (Outernet LNA have 32dB!).
Hint with microwave oven for check RF absorption is awesome! I will check it definitely.