new toy for hamvention
After a few busy months at work I finally had time to work on my HAM LoRA
project and I've got some software that seems to be working well enough.
I've had the two radios directly connected so I need to get some real
testing done but if all goes well I could leave them at the MVUS table at
hamvention for people to play around with.
Tom, I believe you said you had a couple of 33cm antennas floating around
that I could borrow for a bit? If so I could grab them when I get my badge
and do a bit of testing.
For those not aware, I've been playing with some of the shelf LoRA
transceivers and have written some software to allow them to act as beacons
or go through an FT8 like QSO sequence. The idea is to see how far I can
QSO at max LoRA power and then build some amplifiers to see how far I can
get at HAM power levels. These are RFM95 devices that put out about 100mW
in the 915MHz ISM band. (it's tunable a few MHz up and down)
Trevor R.H. Clarke
Computer Science House
Rochester Institute of Technology
retrev@csh.rit.edu
http://www.csh.rit.edu/~retrev/
I have had a LoRa Helium miner for several months.I am constantly amazed that a little 915 MHz 100 Milliwatt unit is locking up with other systems at 60+ km
The modulation is a chirp designed to be DSP'd at the noise floor.
Doing a good job handling IoT traffic. Averaging about $400/month in awards.Kent WA5VJB
On Tuesday, May 10, 2022, 08:35:39 AM CDT, Trevor Clarke via mvus-list <mvus-list@lists.febo.com> wrote:
After a few busy months at work I finally had time to work on my HAM LoRA
project and I've got some software that seems to be working well enough.
I've had the two radios directly connected so I need to get some real
testing done but if all goes well I could leave them at the MVUS table at
hamvention for people to play around with.
Tom, I believe you said you had a couple of 33cm antennas floating around
that I could borrow for a bit? If so I could grab them when I get my badge
and do a bit of testing.
For those not aware, I've been playing with some of the shelf LoRA
transceivers and have written some software to allow them to act as beacons
or go through an FT8 like QSO sequence. The idea is to see how far I can
QSO at max LoRA power and then build some amplifiers to see how far I can
get at HAM power levels. These are RFM95 devices that put out about 100mW
in the 915MHz ISM band. (it's tunable a few MHz up and down)
Trevor R.H. Clarke
Computer Science House
Rochester Institute of Technology
retrev@csh.rit.edu
http://www.csh.rit.edu/~retrev/
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