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I think I have worked part of the JR statement out. -----------
_________________________________________________Do you happen to be the speech writer for Muammar al-Gaddafi ?I think it might be the similar reasoning patterns ---------------------- The most accurate interpretation generally (almost always) is also the most simplistic .He wrote a very clear concise letter for a very specific purpose . You are trying to make a silk purse out of a sow's ear .
Onewasp, what is the purpose of your post and your agenda here? Can you not understand why this letter was released by JR ? We get it, you’re a DSM2 Fan, Great !
Will JR be supporting DSM2 telemetry
Will there be DMSS versions of 9x, 11z, 12x and will they have telemetry (my guess 11z, 12x yes, 9x no)
I think I have worked part of the JR statement out.JR's agreement with HH stops them selling low end DSM2 sets where Spektrum are available, so to get this slice of the market they have to do something different (DMSS)Therefore XG7 will be sold world wide apart from the USA, because HH are the JR distributor in the US and won't want to stock a competing set.
What's the difference between "pra" and "pire" output power? The 35 meg output is "pra" and the 2.4 gig is "pire"there must be some difference or it wouldn't be mentioned.
_________Suggest you read this letter from JR.Hardly dropping DSM2 !To Our Valued JR Customers:During the recent BMFA Nationals, a new JR 7 channel radio system using DMSS was shown by our UK distributor. This system uses a technology that is incompatible with DSM2 in order to meet a market need where DSM2 is not available to JR. Unfortunately, several individuals made statements that JR finds very misleading and require correction.JR remains committed to future development with DSM technologies and to our customers who currently own JR equipment using the DSM standard. JR will continue to manufacture, sell, and support DSM equipment in all markets currently allowed by agreement.It is our goal that this communication clears up any questions about JR’s intentions and that JR remains confident in and committed to the future of DSM technology around the world.We thank you for your continued support.Kind regardsMooney Takamura.International Sales ManagerJR Propo
DSM technology does not = DSM2, DSM covers the whole gamut of protocols used by R/C systems.
All existing RC systems are DSSS, no matter what manufacturer claims.
And in the USA in its application for FCC approval, Futaba specifically says that FASST is DSSS, they do not claim it to be FHSS. ..........
And I suggest you read Macmans post earlier in the thread!!, perhaps Europe is not "in all markets currently allowed by agreement. DSM technology does not = DSM2, DSM covers the whole gamut of protocols used by R/C systems.DSM2 is a HORIZON HOBBIES / SPEKTRUM proprietary protocol and JR licenced it. They are/have developed their own DSM protocol which is NOT DSM2. JR, afaik, has no intention to continue producing DSM2, support of existing sets is a different matter!Brian
Onewasp - what the hell they patented. The whole thing was well known long before anyone of them was born.
That's quite a patent. Interesting that the description is very long yet there are only five relatively short claims.The strength of a patent is always in the claims.
The concept of frequency hopping was first alluded to in the 1903 U.S. Patent 723,188 and U.S. Patent 725,605 filed by Nikola Tesla in July 1900. Tesla came up with the idea after demonstrating the world's first radio-controlled submersible boat in 1898, when it became apparent the wireless signals controlling the boat needed to be secure from "being disturbed, intercepted, or interfered with in any way." His patents covered two fundamentally different techniques for achieving immunity to interference, both of which functioned by altering the carrier frequency or other exclusive characteristic. The first had a transmitter that worked simultaneously at two or more separate frequencies and a receiver in which each of the individual transmitted frequencies had to be tuned in, in order for the control circuitry to respond. The second technique used a variable-frequency transmitter controlled by an encoding wheel that altered the transmitted frequency in a predetermined manner. These patents describe the basic principles of frequency hopping and frequency-division multiplexing, and also the electronic AND-gate logic circuit.
In the meantime I shall continue to fly both my DSM2 and FHSS systems with every confidence that I will be able to continue with both for many years to come. And any future purchases will be dictated by suitability and research, and not by scurrilous internet rumours!
May the cryptography sect disband
But that was one of my favourite fields when I was in the Forces....