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Wednesday,August 21, 2019, 14:48:09

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Andy7:
21 Aug 2019 12:15:41
Gaza - can you make the subject line section in the forum topic list wider? It's cutting off the subject field really short.
Andy7:
19 Aug 2019 09:14:20
Good for you!  ~~
DarkButterfly:
18 Aug 2019 19:13:57
Had another negative encounter, it's been a few years since the last one, just an uneducated ******, going on about drones being illegal yada yada yada.    :-/
Still that didn't spoil my flying time, had an absolute blast  ~~
Gaza07:
07 Aug 2019 19:52:01
ooooh mrs jones  :D
hoverfly:
30 Jul 2019 15:26:34
D.B. you tightwad.. :cool:
atomiclama:
29 Jul 2019 20:14:10
DB that just means you have shed loads of props in the first place ;-)
DarkButterfly:
29 Jul 2019 18:53:33
Just had a thought, even with all the crashing I've done, I haven't bought any replacement props in over a year ~~
ched:
09 Jul 2019 19:45:42
May the sun shine and winds be light for BFU#8. Son't forget lots of vids for those of us unable to attend.  :D
Gaza07:
09 Jul 2019 18:10:30
Hope you all have a great day  :beer2:
Andy7:
09 Jul 2019 14:05:28
BFU#8 details locked in for this saturday - see the head of the forum thread for all details.
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3d - Printworx

Printing 3d Forum

skew planar aerials

Started by Gav, Monday,October 01, 2012, 13:59:00

Previous topic - Next topic

Gav

forget the 3 leaf clover on your fpv setup.  Just use 4 leaf skew planar on both vrx and vtx and enjoy better reception.

icedfusion

I have a 4 leaf skew plannar on the rx but a 3 leaf on the vtx - not sure why they came like this, but this was the 'recommended' pairing.  Got some links to why 4 leaf is better than 3 leaf?

ice.

Gav

just cut n pasted the text below from anothet site that helps explain:

The 3 leafed 'cloverleaf' is IBCrazy's (Alex) simplified build of the 4 leafed Skew-Planar.
Alex has done a lot to drive Circular Polarity around the FPV communities and the cloverleaf is his way of adding his own touch to C-P and claim some originality.

However, the Cloverleaf is not as good at maintaining circularity or opposite hand polarity rejection - it is these 2 things that are most important in circular polarised antennas for our purposes.  Alex's claim that the cloverleaf has more gain than the Skew Planar and this is what seems to drive everyone into believing it's the best antenna, but the gain is so neglible, it's not worth considering IMHO.
It's not the best antenna.

If you check out the long range flights, nobody uses the cloverleaf at these distances (mostly because of the nulls in the VTx pattern).






goraplx

HI
I';m planning to upgrade my antennas and I';m not sure which option will be the best.
Dont care about distance because i fly up to 400m and this is enough for me.. I care about the best quality of signal.

1. Stay with immersion set
2. Buy 4 lobe from immersion and use this on TX
3. Buy 2x skew plannar antenna from  http://hobbywireless.com/index.php?main_page=product_info&cPath=73_77&products_id=801
    and use them on TX and RX
4. Buy crosshair from Hugo  http://www.truerc.net/canada/index.php?main_page=product_info&cPath=30_32_41&products_id=212
   and use this on RX




This antenna   looks for me better because is more rigid than immersion.
DJI F550 Hexa Naza & GPS
JR XG8 , Graupner 9" Props
LifePO4 - A123 5S1P 2300-2500mAh ANR26650M1A and B cells
GoproHD2 , Fatshark Rx, ImmersionRC Tx 600mW, Fatshark Dominator, SpiroNet set Antenna, EzOSD+CurrentSensor

BOINC->
http://signature.statseb.fr/sig.py?id=33

Jumpy07

Does anyone know of where I could get some skews for my 433Mhz 3DR';s ?.. been looking but cant find any ?

Many Thanks in advance
BNUC-S Pilot with PfCo /PFAW.
UAQ / CAA PfCo Instructor / Flight Assessor

"All that is necessary for the triumph of evil is that good men do nothing"

Balders

Quote from: Jumpy07 on Sunday,October 21, 2012, 21:50:42
Does anyone know of where I could get some skews for my 433Mhz 3DR';s ?.. been looking but cant find any ?

Many Thanks in advance


The elements would be 709mm in length!  70 cm';s....I think that';s too large to be practical for most things.
Growing old is mandatory...Growing up is optional

FPV Guru
BNUC-S qualified
Sbaps.co.uk

Jumpy07

Yikes.. handnt thought about that.. duh.. and I should know better lol..

Many Thanks

BNUC-S Pilot with PfCo /PFAW.
UAQ / CAA PfCo Instructor / Flight Assessor

"All that is necessary for the triumph of evil is that good men do nothing"