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dudheart
15th January 2014, 05:22 AM
hello to everyone

this would be my first post as a newby on FPV
I'm assembling my gear and so far I got:

air-frame: hobbyking sky eye
TX/RX: Scherrer LSR UHF system over futaba 9CAP
VTX/VRX : RMRC 1.3GHZ 1.5W
Gopro Hero 3

Next on my list:
Eagletree full OSD
RMRC tracker
Ground Station
Goggles
Camera

my question is regarding the Antennas

which VTX /VRX antennas should I buy for best range and video quality ?
also which camera do you guys recommend?

thanks , hope i've posted in the right place :)

IBCrazy
15th January 2014, 12:14 PM
This video will explain how to choose the proper antenna. Sadly, we really can't tell you what is best for you. That is something you really need to determine for yourself. Luckily, it's not too hard to do.


http://www.youtube.com/watch?v=fd3K5cB19P4

You also might want to visit this thread: http://fpvlab.com/forums/showthread.php?116-FPV-PILOT-TRAINING-CENTER-YOUR-ROAD-TO-FPV-SUCCESS

Watch all the videos there. In 2 hours you'll go from knowing little, to knowing just about everything you need to FPV ;)

-Alex

squishy
15th January 2014, 12:24 PM
and

/thread

see how easy it is?

dudheart
16th January 2014, 01:53 AM
Hey Alex ,

thanks for the quick reply :)
from what i have read your clover leaf antenna will be my choice
does it have to be paired with another one one the VRX side?
also there many different clover leaf for 1.2 on RMRC I didnt quit understand what the differences between each of them...?

zaraja
21st January 2014, 08:01 AM
Yes it would be better if you use a mad mushroom on your receiver. Using two circular polarized antennas help improves the signal and range.


Hey Alex ,

thanks for the quick reply :)
from what i have read your clover leaf antenna will be my choice
does it have to be paired with another one one the VRX side?
also there many different clover leaf for 1.2 on RMRC I didnt quit understand what the differences between each of them...?

zaraja
21st January 2014, 08:06 AM
Ok that's what you should go for http://www.readymaderc.com/store/index.php?main_page=product_info&cPath=11_45_52_100&products_id=1274
It is a combo for Tx and Rx.


Hey Alex ,

thanks for the quick reply :)
from what i have read your clover leaf antenna will be my choice
does it have to be paired with another one one the VRX side?
also there many different clover leaf for 1.2 on RMRC I didnt quit understand what the differences between each of them...?

dudheart
21st January 2014, 09:27 AM
thank you very much
how this antenna will affect my range?
I'm asking this because of this video :
http://vimeo.com/8826952
it doesn't say nothing about a cloverleaf on the Vrx side
also I understand the different patterns of each antenna but no one is talking about the range or radius of the patterns
bottom line does my 1.3Ghz 1.5W Vtx will get me to a 10Km range?

zaraja
21st January 2014, 09:53 AM
My friend first of all the Tx you have is kind of overpowered. With 1.5W you can reach 100 km if you have configured every thing right. But 1.5 W can easily effect your UHF radio signal. 400 mw is what you should look for. A circular polarized Skew Planner or a clover leaf can easily reach 3-6 km around you and if you want to go further you have to look for crosshair, peper box .et.c but they are directional so you have to point them to the plane all the time.
I recommend to go for 400 mw transmitter and don't go more than 1 km until your system is tested.


thank you very much
how this antenna will affect my range?
I'm asking this because of this video :
http://vimeo.com/8826952
it doesn't say nothing about a cloverleaf on the Vrx side
also I understand the different patterns of each antenna but no one is talking about the range or radius of the patterns
bottom line does my 1.3Ghz 1.5W Vtx will get me to a 10Km range?

dudheart
21st January 2014, 10:11 AM
thanks again I really appreciate the help as I am very new at this
unfortunately I already bought the Vtx And Vrx from RMRC I dont know if I can buy another Vtx that will fit my current Vrx does they have to match?
How can I avoid from having problems with my UHF and still using the 1.5W Vtx?

zaraja
21st January 2014, 10:48 AM
You have to do some R&D before buying anything. Look into different forums and you will get the answer. It will also help you to save some money other than buying the stuff that you don't need. Any 1.3 tx from Readymade rc will work with the reviewers they have so its not a problem.

To reduce the interference there is a lot you can do. Most important is to keep as much distance as possible between these two devices. Ideally UHF receiver on one side of a wing and Video tx on the other side (assuming that the wings on a plane are the lengthiest part). And if you are flying a small plane.i.e less than 40 inch then just don't even try 1.5 W.


thanks again I really appreciate the help as I am very new at this
unfortunately I already bought the Vtx And Vrx from RMRC I dont know if I can buy another Vtx that will fit my current Vrx does they have to match?
How can I avoid from having problems with my UHF and still using the 1.5W Vtx?

IBCrazy
21st January 2014, 11:21 AM
^This guy knows his stuff. Take his advice.

I personally fly either 200 or 400mW power. 400mW on my 48"+ aircraft and 200mW on my smaller craft and multirotors. The BlueBeam Ultra is probably more antenna than you'll ever need. There are people taking them 6-7 miles regularly on 400mW.

The best thing to do is buy a starter set and expand when you need it. Lot's of vendors have starter sets. The RMRC link is a good one. Buy it, fly it, and learn. Watch the video series I mentioned for all the details. You will be amazed at how far the basic system can go. The weak link is often the control.

-Alex

rob.thomson
21st January 2014, 12:29 PM
Agreed. Keep it simple.

I personally use a tracker, and 13dbi patch.

Do I need it?

For 95% of my flying - no.

Why do I use it?

- I like to garuantee 100% I will have excellent video, across the whole range of distances I fly. Without the tracker - I would get 90% excellent video.

So you see - big expensive, and complex is not always best. Keep it simple. Sort out your antennas, and you will have loads of fun, and less expense :)

rob.thomson
21st January 2014, 12:41 PM
Agreed. Keep it simple.

I personally use a tracker, and 13dbi patch.

Do I need it?

For 95% of my flying - no.

Why do I use it?

- I like to garuantee 100% I will have excellent video, across the whole range of distances I fly. Without the tracker - I would get 90% excellent video.

So you see - big expensive, and complex is not always best. Keep it simple. Sort out your antennas, and you will have loads of fun, and less expense :)

dudheart
22nd January 2014, 11:37 AM
thanks a lot guys
I will buy the antennas set and try it out
from what I have read the tomas scherrer LRS has build in filters to overcome interference while using high power Vtx
hope it works :)

Robocams
25th January 2014, 01:09 PM
Hallo Alex
I am using on my Quad a 900Mhz Tx of 1500mw. With a linear antenna.
I am having problems vith my video signal after about 600meters.
I am using a Dragon flay UHF system on my radio.
This days I am flaying the Quad. Bat soon I want to flay plans, what kind of antena do you think that I need to bay?
Is ther one set that is good for both of the plans? Can I install on a plan a circular antenna?
Can you send me a link for ordering?
I want to have a video for over 8-9 kilometer.
Normally I flay forward
Thank you
Rafi

zaraja
25th January 2014, 02:41 PM
Watch this series
http://www.youtube.com/watch?v=1dZfovzdSrM Starting from part 1 -9 from ALEX. If you have further questions then you can ask Alex for help.




Hallo Alex
I am using on my Quad a 900Mhz Tx of 1500mw. With a linear antenna.
I am having problems vith my video signal after about 600meters.
I am using a Dragon flay UHF system on my radio.
This days I am flaying the Quad. Bat soon I want to flay plans, what kind of antena do you think that I need to bay?
Is ther one set that is good for both of the plans? Can I install on a plan a circular antenna?
Can you send me a link for ordering?
I want to have a video for over 8-9 kilometer.
Normally I flay forward
Thank you
Rafi