Short messages
Radio carries short text messages. Photos and files need internet access.
The optional radio connection
Another way. Without internet access.
A compatible radio adds another way to message with PYRSA. You keep using the same app.
Not required when using the internet.
Good to know
What radio can do. And what it needs.
An available radio path
The connection depends on the environment, range and reachable devices.
Powered devices
Your phone and radio need power, including during a power outage.
Compatible radios
Tested with PYRSA.
DevicePYRSA test statusDetails
Heltec V3Tested and recommendedSuccessfully tested with PYRSA. Recommended for radio messaging.
SenseCAP T1000-ETested and recommendedSuccessfully tested with PYRSA. Recommended for radio messaging.
LilyGO T-EchoTesting pendingNot yet a confirmed PYRSA recommendation.
Documented status: 21 October 2026.
Questions about radio? Go to helpClose to you
Explore the radio network.
Explore simplified estimated areas around known devices. This is not measured coverage or a reception guarantee.