I decided to buy another QCX-40. I live in the US. I ordered the radio on Jan 1. I downloaded REV-5 Manual Jan 7. I got a shipment notice the radio was shipped from the US on Jan 8. No shipping info nor any serial number given. Just that it was shipped from the US. I recently read QCX boards were out of stock and not expected to be available again until the middle of January. So that is what I know. My concern is which manual do I use to build the radio once it gets here? Will I get a Rev-4 or Rev-5 board? I would hate to think I need to throw away the Rev-5 manual and have to reprint 9 zillion pages for a Rev-4 manual for a radio I have not yet received. If I had known about all this, I would not have printed out the BIG Rev-5 manual and had it bound until I knew which manual to download. Personally I think communications are poor! Lee, w0vt