I cannot speak for
P4P V2, but on
P4P V1 the 5.8Ghz works better for range. 5.8 has less penetration through trees, but more distance with adequate transmission power. If you have a LOS connection, nothing between you and the craft, the 5.8Ghz works better on
P4P V1.
Theoretically a higher frequency has more capability to communication more data. If the transmit power is adequate, that means the video will have a better capability to transmit at 10mbps for greater distance than lower frequencies, having less dropouts. For the
P4P V1 the transmit power from the craft to the RC for video links is good on 5.8Ghz, providing the best range. My experience with 2.4Ghz on
P4P V1 is the range is limited, much like the P4 which was really bad for range. If the
P4P V1 didn't have 5.8Ghz, I would have sold my
P4P V1 long ago. 5.8Ghz is the bees knees IMO.
The other beauty of 5.8Ghz is there should be less interference from Wifi, since 5.8Ghz has less penetration through the walls of homes. So when using a windsurfer the 5.8Ghz range on my
P4P V1 can easily go 3 miles, and sometimes farther. Using 2.4Ghz can't do that.
@GadgetGuy guy has experienced the same ranges on these frequencies.
Also, if you fly near homes or businesses, there are many people that put amplifiers on their 2.4Ghz band access points to improve home/business Wifi performance. This is technically illegal, but they do it anyway, and these rouge frequencies do get outside of the home better than 5.8. You won't find many people putting similar amps on 5.8Ghz, because it's known that 5.8Ghz doesn't penetrate walls as good, so everyone amplifies their 2.4 band. Hence, when flying near homes and business, I find less interference with 5.8Ghz, which means more range.