On Apr 25, 2014 9:51 AM, "Rick - DJ0IP / NJ0IP" <Rick@dj0ip.de> wrote:
>
> STOP!
> ISOTRON IS NOT A MAGNETIC LOOP.
> It is an electrical antenna just like normal wire antennas. It won't work
> indoors. PERIOD
>
> Perhaps I chose the wrong name for it, but it works off of the electrical
> component, not the magnetic component of the signal. It will have the
same
> trouble with house QRN as all of your present antennas.
>
Thanks for saving me the trouble, Rick!
> I suggest you try it as a Receive-Only antenna first.
> That way you don't have to worry about losses or anything like that.
Yes, that's all I care about. The dipole gets out surprisingly well.
> It is very easy to build one yourself.
>
> Which band or bands are you interested in?
>
> I had an uncle (now SK) who had to go into assisted living and could have
no
> outdoor antenna.
> He really missed checking daily into his Kadiddlehoppers' net on 40m.
> While visiting home (Oklahoma) one year, I learned of that and built him a
> 40m magnetic loop, using only wood and coax.
> With that and his TS-120, he was able to check in daily to his 40m SSB
net.
> See: http://www.dj0ip.de/my-favorite-antennas/old-folks-antenna/
> Of course it would have been better if I had had a variable capacitor,
but I
> couldn't find one locally, so I just improvised. My uncle was a happy
> camper!
>
> For receive only, all you need is the big loop, little loop, and any
> variable capacitor with enough capacitance.
> The spacing on the capacitor is not important. Important is "how you
build
> the smaller loop". Many examples found on the Internet are wrong.
>
> Which band or bands are you interested in?
20- 10M.
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