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Ace Hobby . JR-Spektrum . E-flite

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Radio - JR & Spektrum DSM > DSX9 (UK 9303) 2.4GHz NEWS ?
 
 
Mike Moore
Senior Heliman
Location: Canford Heath, Poole, Dorset UK

I guess bribery is not an option then ?
11-08-2007 12:10 AM
 
 
Yug
rrProfessor
Location: Niatirb Taerg

Beurocratic rules are there to be broken
Think positive, it's a negative reality inversion

Team Solar Driftwood
11-08-2007 01:11 AM
 
 
9387ASH
Elite Veteran
Location: UK

del'd
11-08-2007 01:12 AM
 
 
Yug
rrProfessor
Location: Niatirb Taerg

Beat Paul Beard over the head with a herring until he yields the necessaries

Team Solar Driftwood
11-08-2007 01:13 AM
 
 
9387ASH
Elite Veteran
Location: UK

del'd
11-08-2007 01:46 AM
 
 
Yug
rrProfessor
Location: Niatirb Taerg

Does UKRCC or OFCOM have any substantial or quantifyable guidelines ?

Team Solar Driftwood
11-08-2007 01:55 AM
 
 
9387ASH
Elite Veteran
Location: UK

del'd
11-08-2007 09:48 AM
 
 
Mike Moore
Senior Heliman
Location: Canford Heath, Poole, Dorset UK

Just to let all you UK guys/girls Midland Helicopters and Real Raptors are taking pre-orders for the DSX9 .

http://www.realraptors.co.uk/zen-ca...4ac996438d9cc3b

http://www.modelhelicopters.co.uk/a...oming_Soon.html

At least something is happening ...just SLOWLY !

Another issue is that if someone where to use an imported X9303 in the UK the BMFA insurance may not be valid ???
11-08-2007 04:38 PM
 
 
9387ASH
Elite Veteran
Location: UK

del'd
11-08-2007 05:04 PM
 
 
Yug
rrProfessor
Location: Niatirb Taerg



Team Solar Driftwood
11-08-2007 05:06 PM
 
 
9387ASH
Elite Veteran
Location: UK

del'd
11-08-2007 05:10 PM
 
 
Yug
rrProfessor
Location: Niatirb Taerg

Quote 
Another issue is that if someone where to use an imported X9303 in the UK the BMFA insurance would not valid.
where did you hear that ?



Team Solar Driftwood
11-08-2007 05:41 PM
 
 
Mike Moore
Senior Heliman
Location: Canford Heath, Poole, Dorset UK

Another thought ...if someone from outside the UK came here to fly using radio gear purchased from outside the UK then surely their radio gear would not conform UK regs ? This must have been the case with some of the entrants at this years main events, i.e. 3DM ? Please remember that we're talking about the use of 2.4GHz radios.
11-09-2007 06:38 PM
 
 
Mike Moore
Senior Heliman
Location: Canford Heath, Poole, Dorset UK

LATEST NEWS !!!
http://www.rchobbies.com.au/store/p...c9255bcb15c7c1a
This is apparently the same spec as the UK version and works out to be about £408 without servos. Midland Heli's estimate £450 with servos. It will be really great when someone actually gets stock ???
Tick Toc, Tic Toc.
11-14-2007 08:34 PM
 
 
9387ASH
Elite Veteran
Location: UK

Mike,

That is a good question regarding competition pilots from outside the UK using "higher power" transmitters. I havent got a clue on how that will policed in the future... glad to say it's not my problem !!

At least previously all they had to do was a module swop from whatever to 35 MHz..... (and a receiver change)


So much for standardisation on the ISM band !
11-15-2007 10:04 AM
 
 
Mike Moore
Senior Heliman
Location: Canford Heath, Poole, Dorset UK

It could just be enough of an issue to maybe, possibly get a generic, universal, global agreement to 2.4GHz transmitter output and then it wouldn't be a problem !!! You could even buy your radio gear from any source worldwide and all would be at peace in the RC world ? ...Nothing beats a great competitive price !
Yeah right !
11-15-2007 10:50 AM
 
 
Climax
Senior Heliman
Location: West London, United Kingdom

I would guess that the power output of the X9303 is the same as the US version of the DX7 (same RF sub-system and FCC approval etc).

If this is the case then it has already been stated by Paul Beard that the power output of the US DX7 is 3dB higher that the UK version of the DX7 (for details see his post in http://www.runryder.com/helicopter/t364282p1/).

Assuming all of this to be the case, then an X9303 would be equivalent to 2 UK DX7s. Or in other words some one flying with an X9303 would be equivalent to 2 people flying with UK DX7 and standing next to each other (kind of like 2 50W light bulbs next to each other being equivalent to a single 100W bulb).

Also remember that each X9303 or DX7 will each choose 2 unique channels from the 80 available within the 2.4GHz band allocation (remember that all of this is based on good old 802.11). Based on this the transmitted power from each transmitter will be concentrated within their respective channel allocations, and thus minimising any swamping problems.

I appreciate that I may have over simplified this last point as it does depend on how the receivers operate. However in the worse case at distance an X9303 is still probably only equivalent to 2 UK DX7s.

I don't really see a big technical issue here with regards to overseas visitors using their X9303s other than one of regulatory compliance.

I may have gotten all of this wrong, and if so please correct what I have written!
11-15-2007 10:58 AM
HOMEPAGE  
 
 
AAKEE
Senior Heliman
Location: Boden, Sweden

There was made range tests with the Dx7 in sweden, both the US and EU version. The EU version had shorter range, about equvivalten to a JR PCM9/II (the non 2.4 version of X9303, called just 9303 ?).
I can put in a link to this test if anyone would like to se(think its in swedish though).

I dont se a problem with the range of the Dx7 (about 1km with both tx and rx at one meter (three feet) height. Would increase plenty if you increase height of tx.
The US version of dx7 had amost tvice the range, even though there was bulidings etc. between.

Ive used my dx7 for about 500 flights, where at least 20 is on a .60 plank and I have flown it really long away...about to the limit of my eyes wouldnt se it to fly safe back. (Im a military pilot, so im at least not completely blind). Did the test cause I rather loose the plank completely than crasch my evo50 due to range problem.

I dont need a X9303, but the 'bling effect' tell me to buy one :-)
11-15-2007 11:19 AM
 
 
Mike Moore
Senior Heliman
Location: Canford Heath, Poole, Dorset UK

The point I was trying to make was that if an overseas visitor was to be flying in the UK with radio gear purchased from outside the UK, then it would surely not conform to the UK regulations regarding transmitter power output. Who keeps a check on this situation anyway ?
If such equipment was being allowed to be used here during competition, such as at the 3DM/3DX, then how is it that we are being told that we cannot use radio gear bought from say the US here in the UK ?
I realise that different countries have different transmitter power output regulations. Please note that we are only talking about 2.4GHz transmitters.
Surely there should be one regulation for all ? It would sure make international competition straight forward regarding radio gear complying with those particular countries regulations.
All this ranting and raving really doesn't change anything, but it sure feels good to air opinions and at present that people in the UK are having to wait for UK legal spec radio gear. Dame RED TAPE ! What ever happened to being in the EEC and equality ???
11-16-2007 04:47 PM
 
 
Mike Moore
Senior Heliman
Location: Canford Heath, Poole, Dorset UK

There is some interesting info at the following link about the JR X9303/DSX9. It's not a heli site, but worth a look.
http://www.flyinggiants.com/forums/...4-spektrum.html
11-16-2007 08:50 PM
 
 
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Radio - JR & Spektrum DSM > DSX9 (UK 9303) 2.4GHz NEWS ?
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