[TenTec] New Jupiter on its Way _ A Few Questions

[Rockinghorse Winner (Terry)]

K8JHR wrote:
> I have used the Wellbrook ALA-100M receiving loop for over a decade
> with good results at two locations.  It is a "medium or large 
> aperture" loop, because you supply whatever size wire loop you want.  
> I used mine outside, but you could do it inside, but of course it 
> tends to be more RF quiet the farther you get away from your 
> dwelling.  Wellbrook also makes a model that uses a 1 meter alum loop, 
> which works well indoors. The loop does not have to be round or 
> symmetrical, and you can use very light litz wire which is nearly 
> invisible outside.  They can also be used indoors, as in an attic, but 
> you don't want to be listening on it when you are transmitting on it, 
> if you cannot locate it at least 1/4 to 1/2 wavelength away from the 
> transmitter antenna (which applies to all receive only antennas I 
> suppose.)  These work on the magnetic portion of the electromagnetic 
> waves we work with, as does Rick's project.
>
> See The Wellbrook products here:
>
> http://www.wellbrook.uk.com/antennashop/
>
>
> I have also used a DX-Engineering active whip with good results. I 
> have mine in the front yard, away from the transmitting antennas in 
> the back yard, and it has a very low profile.  These work on the 
> electrical portion of the electromagnetic waves we work with. They 
> have a single vertical whip model, and a dipole model, and you can see 
> them here:
>
> single vertical model:
>
> http://www.dxengineering.com/parts/dxe-arav3-1p
>
> dipole model:
>
> http://www.dxengineering.com/parts/dxe-arah3-1p
>
>
> I have used both the Wellbrook loop and the DX-E active whip with good 
> results as receive only HF antenna on my small suburban lot, although 
> they are substantially more expensive than Rick's home brew project.  
> I know several SWL's who have built similar loops to Rick's project, 
> with good results. It is a classic.
>
> I went to the Wellbrook site. But the antenna you cited was 60" in 
> diameter, too large for my room. Did you say they had some smaller 
> loops? In any case, I'm going to try to build a receive mag loop 
> according to the instructions Rick provided. It seems like a straight 
> forward project that should take a few hours at most.

> Happy trails.
> ----------------------  K8JHR  -----------------------
>
>
>
> On 4/25/2014 6:05 PM, Jim Allen wrote:
>> You might also consider the helically loaded loops that K8NDS has been
>> developing.
>
>
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