LISTENING TO MESHTASTIC LoRa ON A 433 MHZ walkie talkie

Development Hardware
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LISTENING TO MESHTASTIC LoRa ON A 433 MHZ walkie talkie

RUN: esptool.py chip_id

       (To find the serial port of the Heltec.v2.0 Meshtastic LoRa board)

FROM MACBOOK RUN: picocom -b 115200 /dev/cu.usbserial-0001

       (To find the Radio frequency) reboot the Heltec, watch for "Radio frequency:"

……………………2 Radio myRegion->numChannels: 8
……………………2 Radio channel_num: 2
……………………2 Radio frequency: 433.574982

ENTER: 433.576 on the Beefing UV-5R (anything a kHz or so higher)

FROM MACBOOK RUN: meshtastic --sendtext aaaaaaaaaaaaaaaaaaaaappppp

………… see:…….Connected to radio
………… see:…….Sending text message aaaaaaaaaaaaaaappppppp to ^all on channelIndex:0

ON THE WALKIE TALKIE:

…………………During the transmission of the send text the unsquelched noise on 433.576 goes to fully quiet, several times as the packets are transmitted

——————very nice “hearing” Meshtastic work! (just comes through as silence on FM)

1 Like
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This is pretty cool! Do you have an audio clip of a transmission? (For those of us curious)

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I use gqrx and a cheap rtl sdr usb tv dongle to monitor my boards.
I was supprised how often they are transmitting.

Here you can get an idea how it sounds if decoding the waveform as AM