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Old Jan 12, 2008, 12:26 PM
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tron's Avatar
Valencia, Spain
Joined Jan 2008
157 Posts
Quote:
Originally Posted by AndrésMtnez
Kilrah reached 2,8km with 10mw tx (2,4ghz) and a pre-amplifier, I think you´ll need something like that really soon
Is very simple:

TX 2.4Ghz +27dBm, antenna 2.4Ghz +14dBm. Sens RX rangevideo -85dBm. = Range 10 to 12Km. Proved at 9.4Km

For increment range, antenna 2.4Ghz +26dBm. Range 30 to 40Km (Not proved ha ha)

For increment range, prev RF LNA 2.4Ghz +15dBm. Range bufffff

regards,
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Old Jan 12, 2008, 12:30 PM
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tron's Avatar
Valencia, Spain
Joined Jan 2008
157 Posts
Quote:
Originally Posted by scrtsqrl
Tron,
This ranks up there with the introduction of the microcam, and then the headtracker...AWESOME!

One question: You have a directional antenna on the Transmitter. What happens when you have to "circle" around you in the field, say when you are landing? Do you have to keep the antenna pointed at the plane? Or does it have some omnidirectional properties close in?

Thanks...and again, awesome work!
dear, scrtsqrl

Normally I appear, but though me desvie 90º I do not have problems to less of 2.5Km and when I land the antenna works well to 180º (reverse) to 400m.

regards,
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Old Jan 12, 2008, 01:14 PM
Just trying to get a nut.
scrtsqrl's Avatar
United States, VA, McLean
Joined Oct 2006
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That's awesome. Thank you. Looking forward to it.
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Old Jan 14, 2008, 12:09 PM
Nemo in a blender
Connexxion's Avatar
The Netherlands-Amsterdam
Joined Mar 2007
940 Posts
Hi Tron,

while reading your thread,a few questions came up to me:

-how sensitive is your system regarding (electric)motor noise?
-how sensitive is your system regarding a video tx aboard the plane?

I know a "normal" 35Mhz rx doesn't really like to be next to a video tx.
What distance should we take into account when installing your rx and a video tx?

Thanks in advance for your answer.

Connexxion
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Old Jan 15, 2008, 06:12 PM
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tron's Avatar
Valencia, Spain
Joined Jan 2008
157 Posts
Quote:
Originally Posted by Connexxion
Hi Tron,

while reading your thread,a few questions came up to me:

-how sensitive is your system regarding (electric)motor noise?
-how sensitive is your system regarding a video tx aboard the plane?

I know a "normal" 35Mhz rx doesn't really like to be next to a video tx.
What distance should we take into account when installing your rx and a video tx?

Thanks in advance for your answer.

Connexxion
Hi, conexxion

No problem of noise of the electric motor. to 9.4KM receiving -82dBm in the receiver. It seems to be immune to the noise.
No problem with the transmitter of 2.4Ghz to 500mW +27dBm

The only one requirement is to put the antenna of the receiver of 869Mhz down for optimicer RF gain. Measures only 84mm.

Sending photos of the assembly in the prototipe (Easy Glider).
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Old Jan 16, 2008, 01:27 AM
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Tron,

With the antenna pointing down, do you have to catch the plane or does it have landing gear?

CD
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Old Jan 16, 2008, 08:46 AM
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Slovakia
Joined May 2006
89 Posts
Hi Tron,
this equipment looks awesome. Please let me know if it will be in stock.
Since i own FF9 i would undertake the testing of this rx/tx. Have one plane with video downlink which stands in air for 25-30 minutes.
It seems like I'm limited now only by my video tx - it radiates only 500mW
Palo.

Quote:
Originally Posted by tron
Hi, all

I advance characteristics of receiver...

RXRCWM11
RC Receiver for FPV or UAV
ISM BANDs
868-902-928Mhz


Incorporating the last technology of Radio Frequency and microcontrollers, the high quality of the electronic circuit, low weight and characteristics, they do of this receiver a small work of art, unthinkable one year ago.

...
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Old Jan 16, 2008, 09:55 AM
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691 Posts
Great work Tron, this is a "must have" for every FPV flyer


//Matte
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Old Jan 16, 2008, 12:07 PM
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Maybe wait until we see some prices...
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Old Jan 22, 2008, 03:03 PM
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tron's Avatar
Valencia, Spain
Joined Jan 2008
157 Posts
Quote:
Originally Posted by CrashingDutchman
Tron,

With the antenna pointing down, do you have to catch the plane or does it have landing gear?

CD
Hi CrashingDutchman,

The antenna is a flexible cable and doubles when touches land.

It is not the best option.

is better than hide with a servo to land

Regards,
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Old Jan 22, 2008, 03:12 PM
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tron's Avatar
Valencia, Spain
Joined Jan 2008
157 Posts
Quote:
Originally Posted by lospalos
Hi Tron,
this equipment looks awesome. Please let me know if it will be in stock.
Since i own FF9 i would undertake the testing of this rx/tx. Have one plane with video downlink which stands in air for 25-30 minutes.
It seems like I'm limited now only by my video tx - it radiates only 500mW
Palo.
Hi, lospalos

The systems of 868-902Mhz is in phase of beta tests.

Still I have situated for a few internationals beta testers.

You deliver international beta equipments to final In February

They were commercialized worldwide from March In April, 2008. After the beta tests.

You want to be a beta tester?

The problem of the video is not the power, is the sensibility of the receiver and the antenna gain.

Regards,
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Old Jan 22, 2008, 03:14 PM
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tron's Avatar
Valencia, Spain
Joined Jan 2008
157 Posts
Quote:
Originally Posted by Impulze
Great work Tron, this is a "must have" for every FPV flyer


//Matte
Hi, Matte

Thank you very much for your support, Matte

regards,
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Old Jan 22, 2008, 03:18 PM
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anci3nt's Avatar
Joined Nov 2006
525 Posts
Quote:
Originally Posted by tron
You want to be a beta tester?
I'd be interested in beta testing. There are many large hills in my area where I can do different range point-to-point tests. I've done similar tests with a 900 MHz Microhard tranciever for link tests for another project. Got patch antennas and yagis in 900 MHz also.
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Old Jan 22, 2008, 03:23 PM
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tron's Avatar
Valencia, Spain
Joined Jan 2008
157 Posts
Prices systems 868Mhz and 35-72Mhz

Quote:
Originally Posted by CrashingDutchman
Maybe wait until we see some prices...
Hi all,

Ok, prices of reference in Euros...


Ampli RF 500mW...........................149€

Receiver 10c 868Mhz RXRC11L........148€

Base Station 868Mhz 902Mhz.........187€

Base Antenna 868Mhz ...................69€

Altimeter......................................38€

OSD168 ......................................65€


Others...

LNA35. Low Noise Amplif 20dB 30-45Mhz....35€
LNA72. Low Noise Amplif 20dB 72Mhz........35€

Regards,
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Old Jan 22, 2008, 03:33 PM
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Joined Nov 2006
525 Posts
Wow that's a bit more expensive than I would have thought. Or, the dollar is doing worse than I thought For the lazy:

Ampli RF 500mW..........................$216.68 (USD)

Receiver 10c 868Mhz RXRC11L........$215.22 (USD)

Base Station 868Mhz 902Mhz..........$271.94 (USD)

Base Antenna 868Mhz ...................$100.34 (USD)

Altimeter.....................................$55. 26 (USD)

OSD168 ......................................$94.52 (USD)


Others...

LNA35. Low Noise Amplif 20dB 30-45Mhz....$50.90 (USD)
LNA72. Low Noise Amplif 20dB 72Mhz.........$50.90 (USD)
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