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by pstephens
Sat May 16, 2020 1:35 pm
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Re: My 4G setup/project

Didneywhorl wrote: Fri May 15, 2020 7:40 pm Your gunna smoke you rpi with that.
I agree with Didneywhorl here.

You need to step down to 5V DC on the PoE splitter end. Try one of these:
by pstephens
Wed Sep 22, 2021 10:11 pm
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Re: Where to find AT Commands for EM20-G and RM500Q-GL

Didneywhorl wrote: Sun Mar 28, 2021 2:59 pm Quectel likes to omit commands that were previously established, yet still supported. Sometimes you have to find a special manual, or look through the older ones.
Noticed this. Also docs have omissions and inaccuracies. But they're still helpful.
by pstephens
Mon Sep 27, 2021 11:50 pm
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Re: RM502Q-AE based cell scanner

A basic scanner run was completed. I mostly capture LTE and NSA RSRQ, RSRP, and SINR metrics from the serving cell command. The CA commands don't include NSA metrics (and require loading the connection) so I didn't try visualizing CA. Command to control the Green Heron RT-21 controller: rotator.py C...
by pstephens
Wed Sep 22, 2021 11:00 pm
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RM502Q-AE based cell scanner

I've recently completed a cellular data rig with an RM502Q-AE as the centerpiece mounted in an AD4M 1DP738X8 RJ antenna and connected to a Raspberry Pi 4. More details on the modem and tower construction can be found here: https://twitter.com/peterastephens/status/1424591177458794496 The antenna is ...