Regarding external SMA antennas
This what Numerus a French lora module manf. uses nice and compact 2.3dbi 14cm high
From Linx Technologies.
You can get from digi http://www.digikey.co.uk/product-search/en?keywords=ANT-868-CW-HWR-SMA
I believe libelium on their LoRa WASP mote use a "special 4.5 dBi antenna" by the same Manf.
This a pig ugly one multitech use 3.dbi 20 cm high
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