Yes sir it does make sense.
I appreciate the information you shared here and look forward to my new
installation.
I hope yours goes well too!
Brian, k5in
----- Original Message -----
From: Laryn Lohman
To: Repeater-Builder@yahoogroups.com
Sent: Sunday, July 26, 2009 11:46 AM
Subject: [possible spam] Re: [Repeater-Builder] Re: The True Pattern of a
DB224
--- In Repeater-Builder@yahoogroups.com, "K5IN" <k...@...> wrote:
> What about a quarter wave from the mast as aposed to half wave spacing out
from the mast?
Yes this will give closer to the basic cardioid pattern.
>
> My understanding is 2 dipoles a half wave out from the mast will exhibit a
good north-south pattern when pointing east.
Very true. I proved this for myself. I took numerous measurements at many
compass points comparing an antenna half-wave-spaced from the tower vs. a top
mounted omni on the same tower. There was a very definite north-south gain
increase vs. east for the half-wave-spaced antenna. In general terms, the
side-mounted antenna was 4db worse than the top-mounted omni to the north, and
11db worse than the top antenna to the east. Again, the result of dozens of
measurements in the field.
Does that make sense?
Laryn K8TVZ
