Using all four audio channels on FS7

Hey, I am currently researching how I can use all of the four audio channels on the FS7? I have the latest update and have read that in order to utlise all the channels I have to use XLR-K2M adapter. Does anyone know if there is a way around that? For example  Could someone recommend an on camera shotgun mic that uses the shoe mount? or maybe somewhere I can buy the XLR-K2M adapter without mic kit?  Many thanks! 

I've noted that using even the internal mic inputs on the FS7 with my Rode NT4, I can hear audio from the 50,000-watt FM station 900' down the road from me, when using it in the yard. Granted, this level of RF shuts down the microprocessors in laptops and some camcorders I've tried out here, so it's pretty severe (over 120dBu, as measured with a HP 8568B spectrum analyzer). My mic cable is custom made, very short, but uses Radio Shack mic cable, so it's not 100% braid shield on the cables.If you're operating in a high RF environment, keep your cables short, and, as a measure, you can either put ferrite beads on the wire just before the input jacks of the camera, or loop the wire 3X around a 1" loop and tie wrap it. The loop is an inductor and will attenuate most VHF-UHF RF energy picked up by the cable's length.

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