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garry

FPV hobby

92 posts in this topic

,,,it is advisable to polish the wire over a third of its diameter....

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Instead of this antenna monopoly ...

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,,,you can use this ...

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And how do the dimensions of the antenna elements change with this design? Or the sizes can be used from the calculator above specified? Thanks for the help!

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Not, varying the angle of reflection of the reflector, different values of the antenna parameters can be obtained.

These are my dimensions...

 

fpv_02.jpg

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and this is your antenna ...

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Do I get it right? Is the antenna pattern with the cone much better than antennas with counterweights?

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And if the vibrator is also made in the form of a cone. An even more flatness diagram will be?

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,, bi-circle antenna after a few changes ...

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The influence of the coaxial cable length on the Vee antenna...

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Hello friends! I with my friend Andrey managed to test the antenna made according to the drawings developed by the respected ADMIN.
The antenna showed itself with the best hand, the video was transmitted from a carrier located at an altitude of 2 kilometers, at a frequency of 1160 MHz channel 6.Transmitter with power of 1 watt.
The reception was on the Chinese 12 channel receiver to which the BILOOP antenna is connected by 20 cm cable. The transmitter is located 1.5 meters from the ground.
The video was taken immediately from the distance of 55 kilometers and the plane lay down on the course with removal.
At a distance of 104 kilometers had to return. Reception all the time was of good quality, the image began to deteriorate with a decrease of less than 1.5 km, interfered with the terrain.
Conclusion: the antenna is excellent for FPV hobby, easy to manufacture, works without tuning with the help of instruments.
Thank you very much author ADMIN.


http://forum.rcdesign.ru/f90/thread142729-337.html

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You have done a wonderful job, congratulations friends....!!!!

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Admin, could you explain the values in the graph in more detail?

 

By the way, the transmitter was just an Vee antenna.

screenshot_5412.jpg.8a3b6e877896370fb8482fc025335f12.jpg

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,,,and that on the flying wing...

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Garry, where is Technique Execution documentation for this Phantom ... ??

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This is a very popular and interesting wing!

These are the main parameters:

Specs(astro/blaze):

Length:29.1in(740mm)

Wing Span:31.9in / 31.1in(810 / 790mm)

Wing Area:1.61 / 1.53ft²(15 / 14.2dm²)

Flying Weight: 21oz(650g)

Pusher: 2826 2350kv Brushless Outrunner

ESC: 30A

Servo: 9g x 2

ZETA FX-61

This is a link to the manual from the manufacturer:  http://www.newzeta.com/pdf/3.pdf

 

 

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Thank you, but more accurate  dimensions exist...??

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Thank you very much! But this is a gift not only for me, but for all fans of FPV. ;)

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And these are the technical details...

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Another biquad form with wide bandwidth...

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