These days, everything is scanned at every point from check-in, truck load, truck unload, etc, with all movement carried out by GPS tracked vehicles. Yet, packages "disappear" from their system only to "reappear" a few days later. I have had...
If you are posting a WTB (Wanted to Buy), you will likely be contacted by a scammer or two. Normally they say something like...
"I know a guy that might have one in this forum, he goes by @Username I haven't seen him on here for couple of days...
Signal range is a complex issue and you can't expect to achieve the Max Transmission Distance any time you fly.
Actual range is going to vary considerably with local interference levels and the amount of trees or other obstacles between you and...