I ordered this because of the very low weight, a tiny fraction of my existing Boscam 500mW VTX which has a huge heatsink plus a fan. I am not too concerned with VTX power and range for my spare phantom, however this new VTX has a strange problem. At about 100m away, my Boscam Diversity LCD screen as well as mu Skyzone diversity video goggles suddenly go black occassionally for 10 to 15 seconds at a time. I get about 250 meters range when its working, but I frequently get the black screen for amaybe 10 to 15 seconds at a time. On the Boscam VTX, WHEN i start to lose the signal, the screen just gets a bit grainy and then snowy until its just static when out of range. I have never seen a sudden black screen with the boscam VTX. Checked all the contacts, no problems there. Replaced the stock dipole antenna with a circular polarised antenna. Both diversity receivers have a dipole and circular polarised antenna. No difference, I still get frequent sporadic blackouts for 10 to 15s at a time. Any ideas? I think it might ne related to battery voltage, because as soon as the screen blacks out, I let go tje comtrols (flyi g in ATTI Mode) then the I get a signal again. If in GPS Mode in strong wind, when it blacks out, switching to ATTI mode seems to solve the problem. I am thinking that perhaps high-speed flight, or. GPS holding position against a strong wind may cause voltage dip which affects the VTX. As soon as the voltage recovers, it comes right again. Will check this again today. Any suggestions welcome.