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Radio Engineer Files Objection to WIPE

drmnainfo.blogspot.com

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Re: Radio Engineer Files Objection to WIPE

#11
post #3

Confusingly, despite relating to encrypted messages, "DRM" in this context is "digital radio mondiale" which appears to be this: https://www.drm.org/technical-info/ Use of COFDM for digital radio in the current AM bands, part of the final AM phaseout?

Thank you. That significantly changes my understanding of the story.

Re: Radio Engineer Files Objection to WIPE

#12
post #3

Confusingly, despite relating to encrypted messages, "DRM" in this context is "digital radio mondiale" which appears to be this: https://www.drm.org/technical-info/ Use of COFDM for digital radio in the current AM bands, part of the final AM phaseout?

There's no mandate for phasing out AM broadcasting on the HF bands, especially not in the US (where the use of digital radio broadcasting by any station is still completely optional at the discretion of the station and where there is no mandate to decrease or remove analog radio broadcast services).

Re: Radio Engineer Files Objection to WIPE

#13

There might be a neat way to work around these laws... Make all the data, including the financial data public. But make sure the people you want to see the data can access it first. Arrange the data in the air so every error recovery block is mixed with financial and non-financial data. Send the non-financial data out of band, and ahead of time, to your paying customers. Now when a data block starts being transmitted…

This is effectively the same as sending an encryption key first to paying customers, and then broadcasting to non-paying customers later.

I am dubtfull this would hold in a court of law.

Re: Radio Engineer Files Objection to WIPE

#14

There might be a neat way to work around these laws... Make all the data, including the financial data public. But make sure the people you want to see the data can access it first. Arrange the data in the air so every error recovery block is mixed with financial and non-financial data. Send the non-financial data out of band, and ahead of time, to your paying customers. Now when a data block starts being transmitted…

This is effectively the same as sending an encryption key first to paying customers, and then broadcasting to non-paying customers later. I am dubtfull this would hold in a court of law.

Publish the non-financial data beforehand on a public website, where theoretically anyone could scrape and transform it into exactly the data-blocks needed for fountain recovery; but where in practice, there’s no specification for doing that, so you’re going to need exactly one particular piece of scraping+transforming software (or at least a running copy of it under test, to do a black-box reverse engineering of it.)

You could go a step further and publish that scraping+transformation software, too—on Github, even!—but just make it finicky as hell to set up, and with no documentation, either. (I would suggest writing it as a microservice architecture, split up between 1. a network of Ethereum smart-contracts, 2. a BeOS server, 3. a dongle program written for a Java Card smartcard, 4. a LambdaMOO object. Use an exactingly-frail implementation of IBM 5250 for the message bus.)

Such that, in practice, you need installation engineering support from—who else—your company.

Re: Radio Engineer Files Objection to WIPE

#15
post #6

This should be understood as high frequency stock traders fighting for turf. One shop tries to access broadcasting bands to enable higher powers, thus, more reliable transmission, by multiplexing the payload with general purpose economic news - allegedly. Another HFT shop is trying to preempt this. The race for speed in financial markets has reached a point where no existing fiber optic or satelite based system can c…

I guess my question is: as an amateur radio enthusiast, why should I tolerate a special exception for THESE people to broadcast data if I can't even do something as simple as coordinate club meeting addresses in private over the airwaves?

Even if I saw HFT as a valuable thing (I don't), it's unfair to create a new exemption for these people just because they have money. And if you suggest that he government shouldn't be involved, then keep in mind the only practical force stopping someone from jamming these transmissions is the exact same government bandwidth allocation guidelines.

This should not be understood as an infight by HFTs. It should be understood as the radio waves of the world being a public, shared resource and folks asking, "Are we changing these rules now?" If so, it should be done equitably.

Re: Radio Engineer Files Objection to WIPE

#16
post #10
post #8

Earlier quoted context omitted.

These links are often used for executing strategies or sending information between different exchanges (a classic example being the cross-exchange arbitrage).

To put it more concrete, there are a number of very large companies that have their stock traded in many locations. Japan, London, and New York all have big stock exchanges (that is just what I know of without looking - if you told me those were the only 3 cities with global stock markets I'd call you a lier). If you see a big company in London trading for slightly less than the same company in New York then you shou…

This is called “arbitrage”. It takes millions and billions of dollars to play this game.

Keep in mind that the majority of back-end clearing and settlement of trades in Europe is done by Euroclear [0], who reported over 27 Trillion Euros of assets under management in 2015. In the US, virtually all back-end clearing and settlement is handled by DTCC [1], who reported handling over 1.7 Quadrillion dollars worth of value in 2011.

That’s the scale of the market you’re playing in when you first pretend to arbitrage.

[0]: https://en.wikipedia.org/wiki/Euroclear [1]: https://en.wikipedia.org/wiki/Depository_Trust_%26_Clearing_...

Re: Radio Engineer Files Objection to WIPE

#17
post #3

Confusingly, despite relating to encrypted messages, "DRM" in this context is "digital radio mondiale" which appears to be this: https://www.drm.org/technical-info/ Use of COFDM for digital radio in the current AM bands, part of the final AM phaseout?

There are currently no signs that Longwave and Shortwave AM broadcasts are going away here in the UK. If Droitwich Transmitting Station[0] can stay operational for another 14 years it will be 100 years old!

[0]https://en.wikipedia.org/wiki/Droitwich_Transmitting_Station

Re: Radio Engineer Files Objection to WIPE

#18

There might be a neat way to work around these laws... Make all the data, including the financial data public. But make sure the people you want to see the data can access it first. Arrange the data in the air so every error recovery block is mixed with financial and non-financial data. Send the non-financial data out of band, and ahead of time, to your paying customers. Now when a data block starts being transmitted…

I'm surprised that it is not possible in US to buy air time on commercial stations for exclusive use of the buyer and their customers. Surely it would be similar to buying an advertisement.

Here in the UK we already have data transmission over AM radio[0], nominally for remotely switching electrical equipment on and off but could be used for anything that only needs a low data-rate channel. I would not be surprised if the HFT people are using it.

[0]https://en.wikipedia.org/wiki/Radio_teleswitch

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