I agree.
It is the antenna elevation which matters.
However, having said that, further description might clarify the situation.
Around here, with my vertical, I put out a better signal at only a few feet
above sea level, and about 100 yards away, with minimal grounding, than my
friend 300 feet higher on a chalk escarpment with a reasonable earth system
for his equivalent vertical.
The relative ground conductivity is the answer in our instance.
With a yagi, however, it would be a different scenario.
73
David W Wood
-----Original Message-----
From: For blind ham radio operators [mailto:[log in to unmask]]
On Behalf Of Pat Byrne
Sent: Tuesday, April 14, 2015 3:13 PM
To: [log in to unmask]
Subject: Re: antenna height measurement question
David,
i would think that antenna height is above ground, whether that be on
the paciffic ocean beach or in Denver. Otherwise, here near Chicago
my G5RV is nearly 1,000 feet high! i couldn't afford the feedline!
Pat, K9JAUAt 08:18 AM 4/14/2015, you wrote:
>Hi:
>
>If a person's QTH is in an elevated area(Denver, for example), which is
>nicknamed the "mile-high city", and they tell you that their hex beam is
>mounted at a height of 50 feet, it seems to me that this figure should be
>added to the QTH's elevation to have a more accurate height Is this valid,
>or is this a faulty assumption ?
>
>Sincerely yours,
>
>
>
>David S. Pearson-wa4dsp.
>
>
>---
>This email is free from viruses and malware because avast! Antivirus
>protection is active.
>http://www.avast.com
|