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European 72MHz frequencies ?

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Old 02-18-2003, 11:54 AM
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rajul
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Default European 72MHz frequencies ?

I saw xtals for these 72MHz frequencies advertised in ripmax.com:

1) Brown 72.080
2) Blue 72.160
3) Red 72.240
4) Violet 72.320
5) Orange 72.400
6) Yellow 72.960
7) Green 72.640

Are these European legal frequencies ? There's a 10khz gap between them and the legal frequencies in the USA. Is there any possibility of interference, assuming a good receiver is used ?

Thanks...........
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Old 02-18-2003, 12:48 PM
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Steve Lewin
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Default European 72MHz frequencies ?

Have a look at http://www.bmfa.org/JRCUC/internat.html if you want to know what frequencies are permitted in various countries. 72MHz isn't legal at all in most of Europe but 72.080 and 72.240 seem to be allowed in Italy.

Steve
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Old 02-18-2003, 11:59 PM
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Default European 72MHz frequencies ?

In Italy, most of 72 mhz is military.

Elson
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Old 02-19-2003, 12:54 AM
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rajul
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Default European 72MHz frequencies ?

Thanks for the link and feedback guys !

Elson, is that a net mounted on the plane in the avatar to collect airborne species for your research ?
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Old 02-19-2003, 01:33 AM
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Default European 72MHz frequencies ?

Yes, the net is an insect net. The photo is of an old prototype. We have evolved since then. I study the long-ranged movement of economic insects and significant plant diseases which use the storm systems to move hundreds of miles in a single nite.

Elson
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Old 02-19-2003, 08:16 AM
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Default European 72MHz frequencies ?

Cool ! Does the prop (I suppose you fly electric to avoid fuel contamination) cause any physical damage to your samples ?
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Old 02-19-2003, 12:40 PM
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Default European 72MHz frequencies ?

Electric doesn't cut it. I use 3W power. The propeller is present in so little of the column of air sampled by the net, that damage to insects or fungal spores is not detected.

The airplanes are similar to the idea of the tugboats who move large ships to dock. Way over powered to drag a very draggy device through the air. Deployed insect nets we use generate between 3.5 and 8 lbs of drag depending on size. It takes a lot of engine to overcome this drag and remain flying.

Elson
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Old 02-20-2003, 02:33 PM
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JohnBuckner
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Default European 72MHz frequencies ?

Interesting, thank you Elson. I to have wondered about your avitar.

John
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Old 02-25-2003, 10:08 PM
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Default &2 mHz in Europe

I suspect this is a typo. Those are 27mHz frequencies I believe
Regards,

John
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Old 02-26-2003, 08:48 AM
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Steve Lewin
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Default Re: &2 mHz in Europe

Originally posted by JohnMac
I suspect this is a typo. Those are 27mHz frequencies I believe
I suspect you are wrong. They are nothing like the old 27MHz colour frequencies (e.g. Brown was 26.995, Green was 27.195). However as 72MHz frequencies they are known to be legal in several countries.

Steve
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Old 02-26-2003, 01:20 PM
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rajul
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Default European 72MHz frequencies ?

Hi Steve, got a message from ripmax that they don't have stock of these frequencies. Any idea of anybody in UK or Europe that still carry these Futaba xtals ? Thx...........
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Old 02-26-2003, 01:31 PM
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Default European 72MHz frequencies ?

dont quote me but i believe that the legal freq's @least in germany are 35mhz......
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Old 02-26-2003, 09:38 PM
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Default European 72MHz frequencies ?

Those are the OLD ,no longer legal in the US frequencies .
These are some of the very crystals the FCC and AMA were determined to keep OUT of the RC transmitters

The colors were flown on the antenna along with a white ribbon to denote which of the 72 MHz channels the TX was operating on.
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