Antenna’s: We picked up a 900 MHz 5 dbi antenna off Amazon for $6 and had been using it on our Single Channel Gateways for testing. My nodes still have a red wire antenna and I looked up the length for 902.3 MHz(79mm). For fun I opened up the 900 MHz antenna on the SCG and was surprised to see it was 56mm long(tuned for 1.2GHz). Thankfully I was able to remove a grounding sleeve, trim that back and create a 78mm(915 MHz) antenna. I suspect Aliexpress and eBay versions are the same.
Check your antenna lengths because even commercial ones don’t tell the truth.
Indeed, the RigExpert are very nice pieces of equipment. Have owned a few of them and my current analyzer for a while is the AA-600 which can measure up to 1.4Ghz when connected to a computer (sssstt didn’t till that).
Tomorrow, Pycom has a promotion on their webshop (https://www.pycom.io/webshop/) for currently available boards:
TOMORROW ONLY – FRIDAY 25 NOVEMBER. Get 20% off everything. Use voucher code BLACKPY16
Good time to pick up their antenna development kit, with 16 sample PCB antennas covering the spectrum from 169 to 2400 Mhz (of course including 868 and 915 too), ready to test in breakaway boards each with their own connector.
