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2 Thanks to my failing 9xr transmitter giving out on me, I had a nice crash today onto the wooden deck.
I've got things back up again, but now my signal on my FPV feed is horrendous. Previously I could fly over basically my whole 5 acres with no noticeable signal loss. After this crash I get horrible static as soon as I put even a bush between me and the quad, let alone a building or tree. I even flew past my fence off to my left, did a flip and completely lost signal (like I got "No Signal" and a black screen) for a few seconds, even though the quad was still in plain site. I flew back toward that area without the flip and while I didn't lose signal, I had so much static it was basically the same thing.
Any ideas what could be causing this? The real problem is that I don't see any actual damage to components.
This is using a diversity receiver with a helical and one of those big flat antenna.
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139 Did you change antenna on the VTX in between ? Can you check RP-SMA and SMA is correctly matched on the VTX and antenna?
Also try a different antenna if possible.
Also try a different channel on both VTX and VRX.
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74 Maybe the crash changed the VTx channel? Have you tried scanning with your VRx to see if reception is better on any other channel?
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50 22-Jan-2017, 02:33 PM (This post was last modified: 22-Jan-2017, 02:34 PM by Drone0fPrey.) I am very very new, so take this with a grain of rice. But if it all happened after a crash I would say something has possibly broke the connection to your antenna, be it internal, or a damaged solder point maybe.
Another brainstorm might be could something during the crash have randomly caused your vtx to somehow change channels?
Like I said I might be way off, but maybe it will jog an idea from one of the experts here.
Wishin you the best of luck!
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2 Just got outside for some tests that are probably pretty conclusive.
1) Verified the static still exists a day later. It does, though the shape of where is slightly different but basically the same.
2) Verified it wasn't a channel issue by scanning for channel. 3 of them showed the picture when the quad was right next to me, but only 1 showed (via auto-scan) when the quad was far away. 5820, 5828 and 5835 on channels A, B, and D respectively. Flew in all 3 and all 3 had static issues.
3) Attached my 25mw Cam and VTX combo from my micro to my main quad. Verified it was transmitting on a different channel, then changed it's channel to the same one the big VTX was transmitting from. Crystal clear picture. Could fly in the areas where I previously had static with no static. I got a little static when I got really far away in a different area but that's to be expected from 25mw.
Today in fact my main VTX was getting static when on the ground maybe 30 feet from where I stood. Also the crystal clear picture from the micro VTX made me realize how bad the picture from my main VTX looked. I had another post on here recently asking about "wavy lines" on the video and combine those 2 issues together...I'm pretty sure my VTX is fried.
Anyone got any good suggestions for a VTX? Are there any out there with switchable power (25/200/600mw etc), a built in pig-tail and under $40? Also preferably one that's easy to swap out the wiring for an Eachine ET200.
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74 22-Jan-2017, 04:33 PM (This post was last modified: 22-Jan-2017, 04:34 PM by sloscotty.) FPVmodel.com has a couple of switchable 40 channel VTx's. A dragonfly and an aomway - each are under $35. The dragonfly is stackable.
(I have the non-switchable dragonfly 200mW and it's light and works great!)
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