Nady SGM-12 Shotgun Condenser Microphone

I got this for a short film project in a last ditch effort to get a shotgun mic without going over my very limited budget. Running it through a Behringer mixing board into a Sony FX-1 produced clear audio with the only extraneous noise being a high...

I thought I might luck out and get something decent for $40. What was I thinking? I am an experienced videographer and this Nady SGM-12 is absolutely the worst shotgun microphone I've ever tested. I'm sending mine back immediately. I tried two (2)...