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HelicopterAerial Photography and Video › Futaba Fasst 6, or Spectrum 7??
09-14-2007 04:30 AM  10 years agoPost 1
jascamera

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san francisco, ca

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Which of the 2 radio is a better, more reliable radio for a gasser??

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09-14-2007 05:53 PM  10 years agoPost 2
GauchoVolador

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Tx

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Jason,
I wouldnt go with less than 9ch for a camera ship, software in 6/7ch radios is limited in features.

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09-14-2007 06:37 PM  10 years agoPost 3
Rappy 60

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Paris, France

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Why would you need more than 9 channels for a camera ship? I use the DX7 and waiting on the XP9303 2.4Ghz just to get more throttle points. The DX7 is more than enough for a camera ship, plus the added security of some bozo who just bought a walmart foamie not shooting you down. Also noise interference on 72Mhz is something to deal with, whereas on a spektrum its a moot point. I really don't see the DX7 software as a limiting factor other than the number of point for the curves. As for the futaba, Im not sure and I probably went a little off topic (sorry).

Dale

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09-14-2007 08:23 PM  10 years agoPost 4
GauchoVolador

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Dale,
I never said more than 9, 9ch is good enough.
If you are starting out a business like Jason is doing requires a little forward thinking, why running short in features from the beginning if you can afford better equipment. You just added an example: few curve points; many other problems would come up as your fleet gets bigger or your business is expanded and you need to setup different things.
We have flown 72Mhz in urban locations where youd expect to find more interferences than park flyers, never had a problem.
Im not saying 2,4ghz is not good, it has lot of advantages against 72mhz. If you want to experiment go ahead with it.

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09-14-2007 08:48 PM  10 years agoPost 5
wlfk

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uk

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I have problems with FAAST interfering with 2.4gHz video (isn't a problem the other way round). I'd be interested to hear whether this is an issue with the DX7

K

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09-14-2007 08:56 PM  10 years agoPost 6
GauchoVolador

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Wlfk

Youll find some info here:
http://runryder.com/helicopter/t343493p1/

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09-14-2007 09:05 PM  10 years agoPost 7
wlfk

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uk

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Thanks...

I asked about alternative frequencies on another thread a while back. But my understanding is that in the UK they're all banned apart from 2.4g.

If I turn my FAAST system down to 10mW instead of 100, I get about 100M range on the ground, and if the helicopter is mid-way between the TV receiver and the transmitter interference from the Futaba TX to the video downlink is acceptably low. But it's not a great solution.

K

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09-14-2007 09:15 PM  10 years agoPost 8
GauchoVolador

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Is 900Mhz banned in the UK? Are you sure about it?

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09-14-2007 11:28 PM  10 years agoPost 9
wlfk

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uk

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If you look http://www.ofcom.org.uk they give some information. 900mHz seems to be allocated to mobile telephones - we use a different system from the USA (perhaps also Mexico).

http://www.ofcom.org.uk/radiocomms/...fat/ukfat07.pdf

I can't find any uk suppliers of 900mHz equipment either.

Kit

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09-14-2007 11:30 PM  10 years agoPost 10
wlfk

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uk

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Actually, 1400mHz seems to be a goer (search for 'video' ). So perhaps not all bad news. And perhaps even 5.8gHz.

K

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09-15-2007 02:11 AM  10 years agoPost 11
andrewp28

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Toronto, Ontario - Canada

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Why would you need more than 9 channels for a camera ship?
If you are using a heli with 4 servos for cyclic, want to do solo camera work, and would like to use a stabilizer, 9 channels is not enough.

CH1 - Aileron
CH2 - Elevator
CH3 - Throttle
CH4 - Rudder
CH5 - Gyro Gain
CH6 - Pitch
CH7 - Governor
CH8 - 2nd Pitch servo
CH9 - Stabilizer Gain
CH10 - Camera Yaw
CH11 - Camera Pitch
CH12 - Shutter

Well I guess you could use fixed gain for the gyro, ditch the governor, disconnect the stabilizer, convert the heli to 3-servo 120 degree cyclic, and hire a second person to run the camera (make them use their own radio!) and then you would only need 5 channels.
I've heard that with some creative hacking you can use a couple of electronic v-tail mixers and some bellcranks to provide 210 degree CCPM with only 2 servos, then you would only need 4 channels.

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09-15-2007 02:54 AM  10 years agoPost 12
Oyley

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Manchester (UK)

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FLK

Try searching under MPT1394,you may find you can use it up to 500mw legally,not a budget option though.

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09-15-2007 02:59 AM  10 years agoPost 13
Oyley

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Manchester (UK)

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Sorry..WLFK

http://www.ofcom.org.uk/static/arch...pdf/mpt1349.pdf

Sorry to all for this being off topic,just trying to point someone in the direction of a possible alternative to 2.4ghz in the uk

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09-15-2007 03:17 AM  10 years agoPost 14
jascamera

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san francisco, ca

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I am just using the radio for flying only. I will have someone who does the photography. What I want to know is, if I use a API 2000, do I need extra channel for that and how many channel all together is need?

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09-15-2007 03:47 AM  10 years agoPost 15
wlfk

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uk

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Thanks... I'll look out for it Oyley.

K

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09-16-2007 02:13 AM  10 years agoPost 16
Rappy 60

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Paris, France

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I use a API 2000, do I need extra channel for that and how many channel all together is need?
That depends on the bird you are flying. You can move the gyro gain channel to the ap2000i and gain an extra channel.

Dale

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09-16-2007 08:40 AM  10 years agoPost 17
BigguyOz

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Forster, New South Wales, Australia

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The AP2000i only needs one channel, for gain adjustment, and as Dale said, you can use the channel you might currently use for gyro gain, and switch gyro gain to the 4th slot on the AP2000i itself. It wouldn't be adjustable from the ground, but for AP, who needs that?

Tony Stott

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09-16-2007 04:26 PM  10 years agoPost 18
jascamera

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san francisco, ca

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Thanks. That's what I need to know.

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