[Elecraft] Urban stealth HF: Inside-the-backpack loop antenna?
turnbull
turnbull at net1.ie
Tue Jan 22 17:24:49 EST 2019
Why not a collapsible Alexloop mag loop which fits in your back pack and will be nore efficient. 73 Doug EI2CN
Sent from my Samsung Galaxy smartphone.
-------- Original message --------From: Grant Youngman <ghyoungman at gmail.com> Date: 22/01/2019 22:09 (GMT+00:00) To: K9MA <k9ma at sdellington.us> Cc: elecraft at mailman.qth.net Subject: Re: [Elecraft] Urban stealth HF: Inside-the-backpack loop antenna?
Yes, it does not have to be round. The actual measurement of interest is Circumference of whatever shape it is (e.g, the total length of the radiator). A 12” loop or square, or whatever, is still going to have a very low efficiency at this size point. But closer to rounder is better …
Grant NQ5T
K3 #2091 KX3 #8342
> On Jan 22, 2019, at 4:51 PM, K9MA <k9ma at sdellington.us> wrote:
>
> On 1/22/2019 15:46, Grant Youngman wrote:
>> The problem is loop diameter.
>
> It doesn't have to be round.
>
> 73,
>
> Scott K9MA
>
>
> --
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