"Roy Lewallen" wrote in message
...
Dale Parfitt wrote:

I wasn't talking about skip either- the majority of V/U weak signal work
is
extended ground wave via perhaps enhanced tropo.

Ground wave? Really? I admit I'm not a propagation expert, so I'd
appreciate an explanation from someone who is. Is there really enough
ground wave propagation at VHF/UHF to be useful for any purpose, even
short range communication?

Thank you for the reflection explaination Roy- the geometry makes perect
sense.

As for the ground wave- perhaps I am using the wrong term in describing the
regular (non enhanced) communications that takes place on 6M and up.
On 6M I can regularly work out to 300 miles or so w/o the aid of sporadic E,
aurora or other ionospherically propogated signals.
The ARRL Antenna Handbook describes ground wave as:
"...any wave that stays close to the earth, reaching the receiving point
without leaving the earth's lower atmosphere."

Kraus doesn't address VHF ground wave that I can see.

Perhaps scatter mode might be a better description- in this case tropo
scatter.

73,

Dale W4OP