On 5/26/2011 11:53 AM, JIMMIE wrote:
On May 22, 2:04 pm, 'Captain' Kirk
wrote:
I'm living in a wooded area and am trying to hit our club repeater
reliably. It's cloudy now so I'm and getting a bit of ducting but I
have a lot of trees, mostly poplars, in the direct path. I would have a
line of sight if not for the trees as I'm up enough in altitude. I can
cut the trees, they're mine, but finding the right ones is difficult and
i don't want to waste the whole grove.

I go from keying the repeater with no intelligible signal to not being
able to hit it. Today I actually have an S meter reading due to the
clouds. I am currently using a J-pole and will put up a Yagi soon but
wonder if NVIS would work on 2m? I have only seen references to it
being applied in HF.

'Captain' Kirk DeHaan
N6SXR

Im convinced that my J antenna that I used while camping radiated
mostly verticaly. The situation sounds very similar to yours. I
couldnt hit the repeater back home with 50 watts using the J- while
my wife could make contacts on her HT on the same repeater, Her
antenna was either a telescoping .5 wl or 5/8 wl connected directly to
her HT.

Jimmie

The antenna itself could not have radiated a significant percentage
vertically if used near the design frequency. It is effectively a half
wave vertical if properly constructed and fed. Fed being the most critical.

If you didn't choke the coax properly and it was parallel to the ground
you may have radiated some towards the zenith. But I doubt it was most.

tom
K0TAR