A small loop mounted horizontally will be omnidirectional, mostly
horizontally polarized and with a null overhead. An omnidirectional
antenna isn't usually a very low noise receiving antenna. The gain will
drop by a lot if the antenna is at low heights. A square loop 5 ft on a
side placed horizontally at 10 ft above average ground should have a
peak gain of about -44 dBi at 44 degrees elevation on 160 meters. The
same loop mounted vertically with the top of the antenna at 10 ft
(either apex up or top flat) should have a gain of about -25 dBi.
Jerry, K4SAV
On 9/30/2016 8:03 AM, James Rodenkirch wrote:
I have a 160 meter rcv loop - kc2tx product - I want to employ this season.
I don't have a lot of band noise here in s/w Utah and don't want to bother with
a rotor so....can I mount the loop in a horizontal configuration and expect
some improvement in rcv signal strength? I seem to recall Tom, W8JI, cautioning
me to ensure I have the loop perfectly level. I do have a kd9sv preamp to
employ and the Zo at the antenna is 50 ohms (verified on my Autek ant analyzer)
so I can use 50 coax for the feedline.
Thanks, in advance for any 'advice' or reaffirmation I am on solid` ground here.
72 de Jim Rodenkirch K9JWV
_________________
Topband Reflector Archives - http://www.contesting.com/_topband
_________________
Topband Reflector Archives - http://www.contesting.com/_topband
|