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nandibear
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How to broadcast a Bitcoin transaction without internet - Send analog radio signal to SDR server

Fri Jun 22, 2018 11:58 pm

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How to broadcast a Bitcoin transaction without internet - Send analog radio signal to software defined radio (SDR) server

Is this possible?

It looks like this would be possible with Skywave Linux

Or you could install all the software on any Linux distribution.

It appears to be ham radio. For those who aren't familiar, you bounce radio signals off of the ionosphere (you don't need much, at minimum a cheap radio that send and receive).

The locations used in the featured image are just for example.
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nandibear
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Re: How to broadcast a Bitcoin transaction without internet - Send analog radio signal to SDR server

Tue Jun 26, 2018 2:52 am

Image Radio waves fall into three main categories with a variety of uses: H.F. (High Frequency 3 to 30MHz)
Long Range communications. Shipping, Aircraft, World Broadcast Communications, Radio Amateurs.
Use involves reflecting the signal off the ionosphere back down to waiting recieving stations. Prone to atmospheric changes causing fading and noise.
Range from 500 to thousands of Kilometres.

V.H.F. (Very High Frequency 30 - 300 MHz)
Medium range communications. Fleet vehicles, mobile, coastal shipping and air to tower communications.
Range 70-100km (aircraft several hundred km).

U.H.F (Ultra High Frequency 300-3000 MHz)
This is the domain of such things as Police handheld radios, cell-phones, T.V., and spacecraft to ground communications. In the high U.H.F. range the signal can "bounce" off buildings and reflect until it is detected by a receiver.

source: NASA
The Ionosphere: The Effects of Earth's Upper Atmosphere on Radio Signals

radiojove.gsfc.nasa.gov/class/educ/radio/tran-rec/exerc/iono.htm
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nandibear
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Re: How to broadcast a Bitcoin transaction without internet - Send analog radio signal to SDR server

Wed Feb 20, 2019 3:52 am

No Internet, No Problem: How to Send Bitcoin by Amateur Radio
news.bitcoin.com
by Nadja Bester
February 19, 2019

Excerpt:

In an age where governments are trigger happy at censoring or shutting down networks, it is reassuring to know that Bitcoin can operate sans internet. Network censorship, after all, is not some dystopian storyline but a power exercised by many democratic governments across the world. Thankfully, there are solutions that enable people to send and receive bitcoin even in a worst case scenario. For an advanced technology, it turns out that cryptocurrency can get surprisingly low-tech.

...


Read entire article: news.bitcoin.com/no-internet-no-problem-how-to-send-bitcoin-by-amateur-radio/
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Oretegalv
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Re: How to broadcast a Bitcoin transaction without internet - Send analog radio signal to SDR server

Fri Mar 22, 2019 5:06 am

I find it as a very interesting concept. Analog radio signals are almost nowhere in use anymore, except in radio stations, so it would be difficult to find one devise from where to send the signal. And somebody needs to accept this signal so, I am not sure if it is feasible

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nandibear
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Re: How to broadcast a Bitcoin transaction without internet - Send analog radio signal to SDR server

Mon Mar 23, 2020 3:22 am

All the more reason for ham radio bitcoin transactions:

The Internet May Be Next Victim of Coronavirus Pandemic – Netflix, Google, Apple and Amazon React
news.bitcoin.com
by Avi Mizrahi
March 22nd, 2020

Excerpt:

The Internet May Be Next Victim of Coronavirus Pandemic – Netflix, Google, Apple and Amazon React

...


Read entire article: https://news.bitcoin.com/internet-next-victim-coronavirus/

About the author: https://news.bitcoin.com/author/avi/
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