fpv interference

[HF_ATL]

In my first fpv flight I got some interference (black lines)

My video is:

Setup: 1280mhz, 700mw output power tx with 1/4 lambda monopole homemade and stock rx antenna.

r/c 35mhz ff7, rp8d1 rx

Any idea of what may be causing this?

Thanks

Edited March 23, 2010 by HF_ATL

[Doofer]

Seems a bit worse when you're close in - not so much interference on the picture, rather intermittant loss of frames. It looks like my original setup. I'd put my $$ on multipath interference (the direct signal is interfered with by a reflection 180 degrees (half a wavelength) out of phase), which unfortunately isn't made better by more power.

You could buy or borrow a diversity setup and try two receiver aerials separated in space; I found this sort of problem largely eliminated by my Oracle diversity. You could also try lowering the video transmit power, as that might help a bit.