How do dipoles compare with circularly polarised antennae.
By Julian
Youtuber, shed dweller, solar charge controller aficionado
Good morning all…
Youtuber, shed dweller, solar charge controller aficionado
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That rubber duck antenna is NOT a dipole…
There are no dipoles in your video. There are no circularly polarised ones either.
soooooooooooooooooo
Is this Coombe Hill, Buckinghamshire? While this has nothing to do with the content of your video, I was intrigues to figure out where this was just by the monument shape and google image search… I am wondering if I am remotely close. 😀
There's no polarization with dipole. It only depends on where your receiver antenna is regarding your transmitter antenna. The reception should be much worse if you are receiving on the line of the transmitter antenna. I guess you need to read up on that before doing any tests. Circularly polarized antennas have that mostly fixed and it helps with reflective plates next to the antennas.
Or maybe you've used crappy quality circularly polarized antenna?
Rcmodelreviews channel has a good shoot-out test of various models.
My next thought regards the 10mw.( being a uk law abiding citizen ), have you considered gaining your HAM licence, enabliing legal usage of higher wattage rxtx?
The average output in use around the world for this hobby seems to be the 200mw kit, but many opt for the 600mw setup.
The alternative i guess if a HAM licence was of no interest to you would be to try the 2.4ghz video rxtx kit ( if you're just looking for video signal range and taking the control signal clash out of the equation). I'm sure there are alternative frequencies ( 1.2-1.3ghz, 3.3ghz) rxtx kit available but I'm unsure of unlicensed legality of use.
Nearly 100k subs and you will get the 100k yotube silver button ! (you will need to ask for it)
Are you on holiday? No video for a while getting withdrawal symptons! haha
YOU NEED QUALITY ANTENNAS LIKE BLUEBEAMS! THEY ARE TUNED AND WORK LIKE NO OTHER!
Lol, i thought this video was from the FliteTest channel for a second. i subscribed to that channel as well as yours.
I use a Rubber Duck on my Planes…..and on my diversity Monitor two vertically polarised directional Patch Antennas pointed about 20 degrees apart……2Kms is easily achieved in the air…..even flying low, I can fly 700 mtrs out with no problems….Your test doesnt appear to prove anything other than something is very wrong with your setup.
You tests are not a true reflection of what you will experience during flight. You have little difference in elevation wrt the ground which has a large bearing on signal attenuation. Once the transmitter is airborne the interference should decrease and range should increase. Mount your tx and cam to your quad and fly LOS with cam on your screen. Examine results.
Hi there Julian, you would really want to look at the construction of the clover skewplanar combo for build quality. Some of the cheap ones are really horrible. Also the height for your VTx is problematic, and causes the fresnel effect. This is observed to be null spots that you encounter as you progress further from origin. The very nature of the stone in the memorial make it an unlikely candidate for your point of transmission.