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12 Element Yagi antenna do a very fine job pointing to the plane. Videosignal are very stablewithout any dropout.Because the beam is narrow is it important to aim the antenna directly to the
plane.Antenna is homemade and the cost is only a few cent.
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Patch antenna mounted on helmet (GPP).
I found out early that pointing a antenna
at the target, will produce the best down-
linked signal. It looks like the patch is a
little down in gain than my yagi. It is easier
to point the patch, it has much wider beam-
witdth. This antenna is very good.
For antenna design look here:
RC-CAM
I have build it with a female sma, so i must, use a short coax to the RX. I also use copper .Mybe it is not optimal lenght of the coax, and maybe some trimming of the cable can improve it somehow.
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I have made a sunshade of an old
spinner. It is quite easy to make, just cut
front of for pressfitting. Make it so large as possible without disturbing the video path.
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Mounted a Hitec HS-50 to move the
camera. Design by cyber-flyer.
This work very fine, now I was able
for the first time to fly only by looking
into the video monitor. It is easier to
see where the plane are.
Look at the new video, it is quit good.
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RX 1250Mhz band, it can tune from
1240Mhz to 1367Mhz. Some modification
has been made on the board. It give stereo
sound and I will use one channel for telemetri
and the other channel for sound.
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Just a test setup for the 23cm TX and camera.
TX give about 50mw output and sound in stereo.
I brought TX and RX from a UK company for
£72.- and I think this is a good price.
I will put in a power-amp for a 2watt output.
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