RFI with MSK144 vs FT8 #general

Lance Collister, W7GJ

I may be the only person who has ever operated MSK144 from a moving car, so I don't know if anyone can compare notes with me or not. During the first day of our road trip across country, I operated FT8 continuously and the car seemed to operate FB. At the start of the second day, I operated MSK144 and there was erratic behavior with the steering all day, even when the radio was disconnected and no longer operating.  We are now in Colorado Springs and we can't continue with the trip until this issue is resolved.

I was running between 150 and 200 w output on 6m to a Squalo mounted about 3' above the roof. There was never any interference to the CD player or FM radio while I was on the air.

I wonder if there may be something different in the way the MSK144 tones are generated compared to FT8 that may have caused RFI and interfered with the car computer (either through the DC line coupling or via the RF). We are trying to get an appointment with a dealer here in Colorado Springs before we can resume out trip.

Any experiences or information that may be helpful would be greatly appreciated!

MNI TNX and VY 73, Lance


Lance Collister, W7GJ(ex WA3GPL, WA1JXN, WA1JXN/C6A, ZF2OC/ZF8, E51SIX, 3D2LR, 5W0GJ, E6M, TX5K, KH8/W7GJ, V6M, T8GJ, VK9CGJ, VK9XGJ, C21GJ, CP1GJ, S79GJ, FO/W7GJ, TX7MB)
P.O. Box 73
Frenchtown, MT 59834-0073
TEL: (406) 626-5728
QTH: DN27ub
URL: http://www.bigskyspaces.com/w7gj
Skype: lanceW7GJ
2m DXCC #11/6m DXCC #815

Interested in 6m EME? Ask me about subscribing to the Magic Band EME
email group, or just fill in the request box at the bottom of my web
page (above)!

Join main@WSJTX.groups.io to automatically receive all group messages.