well, I assume that the GP antenna is 0 dBd. The GP antenna is held as reference.
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Out of curiosity, what was the measurement methodology ?
I used e GTem cel and measured 3 axis. The figures presented are only the most relevant axis.
This setup produces a good indication.
It is better to perform TRP measurements or a tradtional antenna gain measurement on a OAT.
Thank you very much for the answer… but sorry that didn’t make any sense to me, and google seems to fail helping me there.
May I ask you - or anyone who knows - to provide some link or pointer about this ?
GTem cel: https://en.wikipedia.org/wiki/GTEM_cell
OAT: http://www.compliance-club.com/archive/old_archive/020312.htm
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Just wondering because this topic’s title casing and the images in the first post seem to contradict:
Is this the “BIG ANTENNA” topic or is this the BIG “ANTENNA topic” ? 
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the idea is everything about LoRa antennas … BIG and small 
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Getting 7.5km using the manufacturer provided long-duck antenna with a Laird RG168 gateway.
Anybody know what can we expect if we install something more like this?
http://www.webb.co.za/storage/files/WEBB_PROX_ANTENNA.pdf
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My Procom CXL900-868 arrived.
It’s bigger than expected 
.
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Said the actress to the bishop 
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VERY GOOD! THAT is a good quality antenna. 
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MAX. POWER 100 W so no problem
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Interesting article on building and using cantennas (directional).
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anyone tried or heard about this one?
http://www.delock.de/produkte/H/89583/merkmale.html
it’s in the 30€ range around here, guess i gotta give it a try for my TTN gateway…
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looks fine to me 
We just inspected the “Antenna collinear 868 Mhz 869 mhz LORAWAN LORA great gain SDR USB smart grid” from https://www.ebay.com/itm/302598573188
Interior:
Bottom coil:
Top coil
Measurements will follow.
I have seen a discussion before about the collineair DiY antenna 
from @lex_ph2lb
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Look forward to your results as I was just about to order one, will hold off for now
I am having good results at the moment with the DIY 1/4 wave GPA.
Would it be possible to compare your measurements to this one?
We are considering antenna gain measurements at the moment.
The idea was proposed earlier on this forum.
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Is it not possible to come up with a top ten list of antennas for under 100 euros , we seem to never pin this down to which is the best for lorawan and in what order