As seen around 01:00 mark, at about the 50m from the launch site the feed the breaks, why is that !?

This is quite a generic question. Post more info please.

i need to know the factors that can cause it ?

900MHz is not used in india right ?

did you use a separate lipo to power it or same one!! and also why is there a large voltage drop, in the OSD??

JK

Also, what sort of antenna were you using? The voltage drop on the OSD is massive 

subhash - yes, i have separate 1000mah lipo for the fpv.
sk - normal stock ones .. rubber ducky you call them i guess ?

and regarding the voltage drop... i   have no clue, it shouldnt do like that ? no clue ? it shows the quads LiPo if i am not wrong ...

DO you have a LC filter on the FPV power supply?

Also is you power lines away from the FPV Tx as its a pretty high power TX?

umm i dont think so ... just connected the lipo to the setup

and no .. ! ... all the wiring were tucked away almost underneath the Tx .... :/

It can be problem as 0.8 W is a pretty high power Tx so its necessary for a LC circuit plus its necessary to place you power or esc or quad Rx away from the FPV setup as it can cause interference!

hmm i think that could be an issue ... the wires were literally sticking with the Tx ..

ok ..

and the LC .. what is it ? and here do i get one ?

Build one! Its a capacitor(220uF-1000uF) and a ferrite ring with coil wrapped or the ferite ring that comes with the HK f-30a esc(inductor)(should be available at local electronics shop)...basically a power filter as videos then to get disturbed at slightest of power glitch
All under rs 20!

sent my stuff to gunnu, will contact him.

here's a link

and one thing ... there is one % icon in between lower side... whats that for ??

FPV signal or the TX ?

% ? where?

basic LC filter.. this will do the job..

you're the man here will you be able to do it ? I sent you the stuff .

hmmm.. don't worry..

most probably low video range is because.

feeding more juice for the video tx that this one can handle(like powering 5v tx with 7.4v).
or
using another 900mhz radio with that like 900mhz telemetry.
or
something wrong with antenna rx/rx.

..

1> The Lipo i have for FPV is 1000mAh 3s 11.1v

2> YES ! The telemetry was ON ( but i didn't open MissonPlanner on my laptop so it wasn't being received, could it still create issues ? )

3> Antenna shouldnt be an issue...

video tx directly connected to lipo?
check spec sheet of video tx voltage range because some of the video tx will not bave inbuilt bec.

or if you connected through external bec and the video tx have onboard bec then also have range issue(due to low voltage).

No..

there is a Y cable.

source from LiPO, separates to cam and Tx via the OSD

http://www.hobbyking.com/hobbyking/store/__13442__900MHZ_800mW_Tx_Rx_1_3_inch_CCD_Camera_NTSC.html

have this