Hmmmmmmmmmmmmmmmmm... In my truck, I have a 2M 1/4-wave MAG mount about 2ft away from my Lil' Wil CB Antenna. The CB is a stock Uniden Pro520XL and the 2M rig is an older Kenwood TM-241A, with MAX OUT at 32W. Neither rig interferes with each other, but the CB does go over the trucks Chinese made stock in-dash stereo. (Hmmmmmm, rarely a problem with AC Delco stereos I've had in the past.) 2 years ago, I've tried a B-Tech UV-24X4 multi-band VHF / UHF rig, and the CB played total havoc with it, BAD. So, I took that B-Tech rig out, and put the Kenwood back in. Might as well use what works. Your problem might be a big one with the Tecson PL880. With little, to no protection on the front-end, you might fry some MOSFET's. What can you try? Add a coupler with parallel opposing ultra fast switching diodes on the ANT IN of the PL880. The diodes will shunt RF to GND when they reach .7V. Where did I learn this trick? From those that have protected the ANT IN's on Sony ICW-SW2010 portables. I did this also to my Sangean ATS-803A portable. Try a search on the Sony 2010 Yahoo Group's page for this, and apply that technique to other RX only radios. The other transceivers? Well, modern ones have PIN diodes already installed for super quick TX / RX switching. Now, whether they can protect the RX of a transceiver from high ANT RF IN is debatable. (Could someone else ring-in on that?)