[Elecraft] Magnetic Loop question

Fred Jensen k6dgw at foothill.net
Wed Oct 19 23:43:42 EDT 2016


On 10/19/2016 6:42 PM, Phillip Lontz wrote:
> Are mag loop antennas very directional?

Yes

> Are mag loop antennas a little directional?

Yes, more than a little

> Are mag loops kinda directional?

The fwd lobe [in the plane of the loop] is very broad, very hard to 
discern the peak, so it really doesn't matter.  The null [orthogonal to 
the plane of the loop] is very sharp, very noticeable.  It can be used 
to null QRN/QRM, provided of course that the QRN/QRM is located in 
exactly that direction.  Fortunately, because the fwd lobe is so broad, 
this actually does work fairly regularly.

K2-AlexLoop

> So which one?

See above.  I think I missed the original post [been really busy for a 
retired puke], looks like the thread drifted off the question.

73,

Fred K6DGW
- Sparks NV DM09dn

- Northern California Contest Club
- CU in the Cal QSO Party 7-8 Oct 2017
- www.cqp.org

> Phil
> K5SSR
>
> What me worry?
>
>> On Oct 19, 2016, at 9:42 AM, Richard Fjeld <rpfjeld at outlook.com> wrote:
>>
>> This is a follow up to recent post from someone in California who
>> noticed less output when operating in below freezing temps.
>>
>> In the thread that followed, I mentioned the relationship of cold to
>> gain and biasing to prevent
>> thermal runaway.  My last ARRL Handbook is a 2009 edition and 'Thermal
>> Runaway' can be found
>> in the index.  You may find it interesting.
>>
>> Dick, n0ce
>>
>> --
>>
>>
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