Topband: Orientation of a 160 meter receive loop?

[K4SAV]

I goofed with those gain numbers. Forgot to do the average gain test in 
EZNEC.  The program was making big errors due to too many segments.

The real answer is that there is only 2.4 dB less gain for the 
horizontal loop.

Jerry, K4SAV


On 9/30/2016 9:50 AM, K4SAV wrote:
> 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