Re: Topband: 1/2 wave inv L

A 180 or 190 degree vertical radiator presents a few different problems compared to one 90 degrees long, due to the high voltage at the feedpoint. You can have ground loss there, but since it is more of a coupling problem than a return current problem, the earth shield is usually a copper mesh

Re: Topband: 1/2 wave inv L

it to the feedpoint. Charles, W2SH From: Mark K3MSB <mark.k3...@gmail.com> Sent: Sunday, February 18, 2018 7:40 PM To: Charles Moizeau Cc: Mike Waters; Roger Kennedy; topband@contesting.com Subject: Re: Topband: 1/2 wave inv L I've read that the minimum lengths for ground radials is no s

Re: Topband: 1/2 wave inv L

om> > Sent: Sunday, February 18, 2018 6:31 PM > To: Roger Kennedy > Cc: topband@contesting.com > Subject: Re: Topband: 1/2 wave inv L > > Yup! The lack of a radial system explains why the 1/2w vertical worked > better. :-) > > 73, Mike > https://nam

Re: Topband: 1/2 wave inv L

f Mike Waters <mikew...@gmail.com> Sent: Sunday, February 18, 2018 6:31 PM To: Roger Kennedy Cc: topband@contesting.com Subject: Re: Topband: 1/2 wave inv L Yup! The lack of a radial system explains why the 1/2w vertical worked better. :-) 73, Mike https://nam03.safelinks.protection.outl

Re: Topband: 1/2 wave inv L

Save yourself some wire, and either search back through the Topband archives or model your very tall vertical. :-) Basically, it'll waste a lot of RF at unwanted high angles. 73, Mike www.w0btu.com On Feb 18, 2018 5:42 PM, "Charles Moizeau" wrote: ... Now, years later, with a

Re: Topband: 1/2 wave inv L

Years ago I tried a a weather balloon filled with hydrogen from a hired canister. The balloon's spherical shape made it highly susceptible to being disturbed by even a fairly mild breeze. In my case the vertical wire was tilted well away from being vertical. Fairly soon the balloon met the

Re: Topband: 1/2 wave inv L

Yup! The lack of a radial system explains why the 1/2w vertical worked better. :-) 73, Mike www.w0btu.com On Feb 18, 2018 4:55 PM, "Roger Kennedy" wrote: Many years ago, a friend of mine used to operate on 160m with vertical antennas suspended on a big Weather

Re: Topband: 1/2 wave inv L

If one is not talking about ham implementations of the commercial AM BC paradigm and their big verticals over very well done dense radial fields, the models can do quite poorly. Go ask W7EL. But then again, what other tools do we have to go with. It's a little dangerous extrapolating between 80

Re: Topband: 1/2 wave inv L

On 2/15/2015 2:35 PM, Art Snapper wrote: I have been researching the inverted L for 160, and have received much helpful information. - Thanks! Today I stumbled across a document regarding the 1/2 wave inverted L. Has anyone done a side-by-side comparison? Art NK8X _ I have