John, I use to Volunteer working Midnight Security at a large Church, and I had My Ham equipment in the Veh . I did not have a DC Adapter for My old IBM Laptop , So I got a Tripplite 300 Watt Inverter to power it , I the RF Generated Noise was so bad I could only hear Strong PKT And other Digital signals ,
The RF Hash was so bad on My Icom 706 Mk-2 It blocked most Signals on HF . The design may have changed since then but that was My experience Good Luck Don KA9QJG
