RF interference question

[DGlaeser]

I have the dreaded altitude jump when I use my COMM2 (an SL-30). Using COMM1 (GNC300XL) doesn't cause a problem.
I've tried a re-routed cable to the antenna without success. However just for the heckof it I inserted a piece of aluminum sheet between the radio stack and the ADI II head, and made sure it was grounded, and it noticeably reduced the effect. I mention this because my ADI has a plastic case and I read that possibly switching to a metal case may help. My test seems to indicate that it might.
Do you agree, and if so can I send my unit in to get a metal case?

Thanks,

Dennis Glaeser

[TrutrakTech]

Hi Dennis,

We have had good success with the metal casing. Just PM me with your address and phone number. I'll get you an RMA# to return it. The only difference is the metal case upgrade puts the pitot and staic fittings close together and on the bottom of the unit instead of the top. Thanks!

[PhantomPholly]

If that doesn't fix it for you, perhaps you would volunteer $20 and test out the solution found in this thread? (http://trutrakap.com/forum/showthread.php?t=43)

It would be good to have confirmation one way or the other.