Originally Posted by PVEdge03
I have a cobra 29, and it's putting out about 170w. i swap up with a 102" steel whip and a 5' Wilson Silverload mounted on my bumper right now. it does really well, i can't tell too much difference between the 2 antennas when i am stationary, but in motion the fiberglass Wilson does much better. I get about out about 40 miles with it, I've skipped across the country on it too.
You must have an amp. No way you could get that much power out of the 29's chassis.
Cross country skip happens on 5 watts as well -- the only time you need the power is when the band isn't so "open". Right now we're hitting the "trough" in the sunspot cycle. It'll be a few years before propagation picks up again.
That is a problem with the 102" whips: in motion they bend and detune. You've hit a pretty good reason why the helically wound antennas on the fiberglass core could be better at higher speeds particulary (unless you put a guy line like monofilament on it, lol -- some guys do that, but it wouldn't work for offroading for sure). I hadn't really thought much about that so good deal.
I have worked Moscow on 10 watts from my ham rig. Using a "hamstick" on 10 meters (right next to the CB band). The hamstick is a hybrid between a continuously loaded helical, and a center loaded whip. It has a wide spaced winding on most of the stick, a tight winding near the top (varies in size with the ham band it's for), then a 3 or 4 foot whip section. The hamsticks are 7 to 8 feet tall, but the whip is very flexible, but not long enough to bend in the wind to the point it detunes. A nice compromise.