Beverage antennas have much lower signal strength on receive than other
antennas. The received signal strength on a beverage is usually 6 to 12 db
below a dipole. But because the beverage is very directive, it only hears
noise from one direction, not all directions. Hence the signal to noise
ratio on the beverage is usually much better, allowing you to copy much
weaker signals. But for transmit, your signal will also be 6 to 12 db down,
making the beverage a poor choice for transmit.
Carl Moreschi N4PY
121 Little Bell Drive
Hays, NC 28635
www.n4py.com
----- Original Message -----
From: "Dr. Gerald N. Johnson" <geraldj@weather.net>
To: <tentec@contesting.com>
Sent: Sunday, December 05, 2010 7:29 PM
Subject: Re: [TenTec] Rhombics
I think the Beverage works on a bending of the radiation field very
close to the ground which benefits receiving but is not an effect the
antenna can create for transmitting.
73, Jerry, K0CQ
On 12/5/2010 5:09 PM, JOSEPH DAVIS wrote:
OK on Beverage Eff. Most use Beverage to receive and vertical or
dipole to transmit. I am still thinking why the Beverage is so
ineffecient for transmitt. jjdavis
On Sun, Dec 5, 2010 at 4:14 PM, Richards<jruing@ameritech.net> wrote:
We used a steerable two Beverage array (receive only) for the 160 M SSB
contest last Feb, and it was fabulous. I would not want to transmit on
that. Final results... 5th place in North America and First in Section
8. (We had as many contacts as some of the others, but guys on the East
Coast with multipliers to EU killed us...)
The steerable Beverage array was a wonderful receiving antenna - we
could null off direction signals, and focus on the immediate contact we
were taking at the moment - a very helpful tool dealing with the
pileups.
We used a tower as a vertical transmitting antenna, which worked great.
I doubt if I will ever have either of those on my suburban lot.
========================== JHR ===============================
On 12/5/2010 3:30 PM, Ken Brown wrote:
If u have land consider the Beverage antenna. I have two and they are
simple to build and performance is excellent.
Depends what you mean by performance. You can get a good directional
pattern with a Beverage, and their efficiency is very low.
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