Originally Posted by RCBABBEL
I lost the antenna on my UM 4-site.
Called Horizon and told them it was about 18 months old with hundreds of flights.
They had me send in the old brick and sent me a new brick free of charge.
That is sweet indeed. Well now that I removed the bath caulk I had a few flights, ~3 minutes each, 0 frame losses in the air!
Noticed minor loss 2 on a missed landing when I put the remote close to the ground but that doesn't count.
So if you happen to break your antenna and don't have the excellent horizon hobby support close by, make sure you know how to solder and make a clean joint with a wire as close as possible in thickness and length to the original.
You'll find the right length in the SPMAS6410NBL manual.
Slightly thicker wire won't hurt your signal but a rubber coated wire, silicone or dirty solder joint will.