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HelicopterRadio - JR DMSS › DSX9 (UK 9303) 2.4GHz NEWS ?
11-29-2007 10:01 PM  10 years agoPost 61
9387ASH

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No idea.

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11-29-2007 10:06 PM  10 years agoPost 62
Jonty

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Ok cheers - but does anyone know how the UK compliant DX7 is "toned down" Is it software or firmware?

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11-29-2007 10:10 PM  10 years agoPost 63
9387ASH

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Its in the firmware, it loads the country settings effectively..... just like when you first install a wireless device on your PC, it asks you where you are ? Well, the RF pcb's are pre-loaded by Spektrum prior to being assembled into the radio.

For the 9's, JR receive the relevant pcb from Spektrum and fit them into either the X9303 or the DSX9.

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11-29-2007 10:36 PM  10 years agoPost 64
Jonty

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Great, thanks Mac man, that makes sense. I guess I will have to wait to see what process unfolds for producing compliant DSX9s. Fingers crossed it can be as "simple" as swapping out the pcb's. This would lead us to "assume" the process can be done and reversed for 9303s and Aussie DSX9s. My guess the issue will be cost given the complexity of the PCB

Cheers

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11-29-2007 11:10 PM  10 years agoPost 65
9387ASH

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I think the issue will be getting hold of the RF pcb's. Availability will be the biggest issue.

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11-29-2007 11:14 PM  10 years agoPost 66
Jonty

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Good point - this is supposed to be a simple hobby

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11-29-2007 11:20 PM  10 years agoPost 67
9387ASH

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If Only !!!!

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11-30-2007 12:12 AM  10 years agoPost 68
Mike Moore

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I'm still thinking how does the poor internation competitor get around this issue ?
I can feel a headache coming on !

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11-30-2007 01:07 AM  10 years agoPost 69
Yug

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Attenuating the output power is most likely very easy - just change or add a resistor.

Vegetable rights and Peace

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11-30-2007 01:24 AM  10 years agoPost 70
Yug

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I'm still thinking how does the poor internation competitor get around this issue ?
They have to fly with an empty baked bean can over the aerial.

Vegetable rights and Peace

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11-30-2007 09:37 AM  10 years agoPost 71
9387ASH

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Yug, it wont be a matter of adding a resistor value ... if only it was that easy. Its done in the firmware of the RF section.

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12-16-2007 11:46 PM  9 years agoPost 72
Mike Moore

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Hi guys/girls,
I'm not sexist ...lol.
Just a little more 'news' for you .....
I've recently been chatting to Manny Williamson
(BMFA - Development Officer) regarding the issues of 2.4GHz radio equipment use here in the UK.
Here's what he had to say .....

Dear Mike
Thank you for your Email in relation to illegal radio control equipment. You are correct in that it is a very difficult situation that we currently find ourselves in, the BMFA is in no way a police force and has neither the remit nor the power to do so.
The use and compliance with telecommunications laws fall directly under the jurisdiction of Ofcom as a government enforcement body, all that the BMFA can do is to provide the best advice possible to it’s members.
Unfortunately even the CE mark is not always a clear indicator and there are sets which are perfectly legal for use in the UK which do not carry this identifier, in these circumstances the onus is on the end user to prove compliance with UK law if requested to do so by a statuary body.
In the case of Spektrum sets that are found to be transmitting above the UK legal 100Mw the importers (Horizon Hobby UK) operate a service to rectify this on a FOC basis, regarding other manufacturers I do not have information on this aspect at present.
The best advice is to buy reputable equipment from designated importers who provide a full statement of compliance with European legislation, only under these circumstances can you be confident that equipment is compliant and that there will be a back up service if this compliancy is called into question.
The advice provided in the BMFA News (in this issue as well as previous issues) is the best available at present, there will be updates published as and when this becomes appropriate.

Kind regards,
Manny Williamson
Development Officer

ADDITION ...

Thank you for your further Email in relation to illegal radio equipment. The situation is never going to be straight forward; the best advice is always going to be to purchase reputable equipment from the recognised importer for the brand. This would be considered as reasonable care and diligence on the part of the flyer, having taken this route if there is still a problem then it is likely to be the responsibility of the manufacturer rather than the end user.
The insurance would only be invalidated if the user knowingly broke the law, if he could show that he had taken the steps above then there would be no issue.
With regard to checking of transmitter output, we are currently looking in to this matter in order that we are able to publish the best advice to members, indications are that a cheap and simple microwave oven tester will do the job in a flying field situation.

..................................................................

I think this puts things in a little more perspective regading use and BMFA insurance cover.
I'm also in the throws of chatting to someone else with regards to being able to measure transmitter output. I'll let you know what I find.

Mike.

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12-17-2007 01:05 AM  9 years agoPost 73
Yug

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In the case of Spektrum sets that are found to be transmitting above the UK legal 100Mw the importers
this implies we are OK because the issue related to whether the Txes were operating at >10mW. In that case, my DX7 and X9303 is OK. I believe the US models are set to 100mW so what's everyone worrying about.
There's no doubt that my DX7 outputs at a power > 10mW due to the range check of 80 to 100 paces with the antenna horizontal,compared to 30 paces mentioned by others.

Vegetable rights and Peace

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12-17-2007 01:39 AM  9 years agoPost 74
9387ASH

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US sets are set to 200mW EIRP(or thereabouts ), this equates to +21dBm from the Cypress chipsets plus the 2 dB antenna gain.

We are allowed 100mW which is 18dBm + 2 dB gain.

The chipset and amp used does not exceed 21dBm if I remember correctly, the next "step" down is the 18dBm.

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12-17-2007 01:57 AM  9 years agoPost 75
Yug

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That sounds OK. I stand corrected. I lie huffing and puffing.

Vegetable rights and Peace

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12-17-2007 03:31 AM  9 years agoPost 76
Jonty

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That sounds OK. I stand corrected. I lie huffing and puffing.
Nice try though

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12-17-2007 11:28 AM  9 years agoPost 77
9387ASH

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Something else to bring a smile to your face.... according to various sources, the Spektrum system here in the UK meets OFCOMs interpretation of FHSS and is not restrained by the PSD issue !!

WooHoo (as Homer would say!)

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12-17-2007 07:14 PM  9 years agoPost 78
Four Stroker

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Well, Mac_Man, you know it ain't so.

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12-17-2007 07:46 PM  9 years agoPost 79
Helinutnz

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well I read all that and now I truly do feel like sleeping even though it's only 7.47pm in London. It's like reading aviation law.......ZZZZZZZzzzzzzzzz.

Mac-Man....question about the dsx9 please. could the hold, flight mode, rudder dual rate switch and trainer switch be easily move to their opposite sides on this radio? Like are they on long wires or attached to boards?

I have a 9303 72mhz....looking to get a DSX9 as they should be arriving in Hong Kong soon but the switches are on opposite sides to the 9303.

Cheers

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12-17-2007 08:51 PM  9 years agoPost 80
Jonty

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Wellywood

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I thought you had a 9XII Helinut? Switches are the same as that radio

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HelicopterRadio - JR DMSS › DSX9 (UK 9303) 2.4GHz NEWS ?
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