@triptych Would love to, but @BNetzA says nope.

- As in: 'You cannot use any non-approved transcievers' and 'The primary users of said Band [ #GSM900 ] have every right to the exclusive frequency allocation they paid for.'

And as cool as it sounds, I'd rather not risk €50k+ in fines if not jailtime for #SpectrumViolation|s...

- Maybe someone will make a #LoRa / #Meshtastic version that uses 27/40/433/868MHz ?

I boosted your post tho, cuz the #Cybiko is still cool.

https://mastodon.social/@toychicken/116510383197370769

@JustinDerrick @triptych @BNetzA @toychicken #LoRa AFAICT is midband, uses spread-spectrum and wider channels, so it's not compatible with like #CEPT standardized #CB radio in 27MHz...

One could do #AFSK modulated Packet Radio, but most juristictions, like Germany, do not allow DIY of Transmitters but necessitate a certified radio to be used...

DIY-ing a compliant transciever is extremely costly due to certification req..
https://en.wikipedia.org/wiki/Citizens_band_radio#Frequency_allocations
https://en.wikipedia.org/wiki/ISM_radio_band#Frequency_allocations
https://de.wikipedia.org/wiki/CB-Funk#CEPT-konforme_CB-Kan%C3%A4le_und_Mittenfrequenzen

@JustinDerrick @triptych @BNetzA @toychicken also AFAICT #LoRa does have #Patents and #Trademarks that [at least the chip] manufacturers have to license...

#Dash7 seems less constrained, but is obviously incompatible.

https://en.wikipedia.org/wiki/LoRa
https://en.wikipedia.org/wiki/DASH7#OSS-7:_Dash7_open-source_stack

@JustinDerrick @triptych @BNetzA @toychicken

You'd likely have an easier time implementing #LiFi or even #IrDA over visible light spectrum if not a faster version of #RONJA.

- Something that @stman has been working on for some time, including a sort-of WDM to enable more bandwith by using different LEDs at different wavelenghts together and filtering them at the RX-end.

https://en.wikipedia.org/wiki/RONJA
https://en.wikipedia.org/wiki/Li-Fi
https://en.wikipedia.org/wiki/IrDA
https://en.wikipedia.org/wiki/Wavelength-division_multiplexing

@JustinDerrick @triptych @toychicken @stman That being said:
#IrDA over visible light (regardless if free-field or cabled [i.e.Mini - #TOSlink] would be nifty tho, if it can do #broadcast...

But the problem is that unlike #LoRa these are designed as [half-]duplex protocols and not as something "replayable"...
So one would need to develop some protocol that is simplex and can facilitate said transfers in small packets.

https://github.com/kbtechnologies/ATP
https://en.wikipedia.org/wiki/IrDA
https://en.wikipedia.org/wiki/TOSLINK#Mini-TOSLINK

@JustinDerrick @triptych @toychicken @stman Either way, #Meshtastic & #LoRa is designed to exceed the range of #SRD radios that are common around the world...

https://en.wikipedia.org/wiki/Short-range_device