[Waverley ARS] Isotron Antennas Pros & Cons

[Adam Carmichael]

Hi Brad and Mathias,

Are these a commercially made mag-loop? (they sure look like them) I was 
thinking about building one a few months - the problem I found was 
getting the capacitor.

73 VK2FNRD... Adam

Brad Crowe wrote:
> Hi Mathias, I think Eric may have been referring to EH antennas when he 
> said that.
> 
> Like you, I have also been curious about these antennas.  They have been 
> around for a long time but nobody ever mentions them.  I figure if they 
> were really good they would be a lot more popular especially as they are 
> so small. I thought they would be very narrow in bandwidth, but the 
> reviews in the EHAM say differently.
> 
> There are 6 pages of reviews 
> here...http://www.eham.net/reviews/detail/311  some not very flattering 
> and others quite positive.
> 
> 73 Brad VK2CEC
> 
> Mathias Burbach wrote:
>> Hello Eric,
>>
>> This morning we spoke about Isotron Antennas at Centennial Park. You 
>> mentioned some sort of inefficiency of this type of antenna. Could you 
>> please explain that a bit further? Carl, an OM in Florida (WA2STL), 
>> recommended this antenna to me. Here is the URL he gave me:
>> http://www.isotronantennas.com/
>>
>> On these Internet pages you will find an article on "How Do The Isotrons 
>> Work So Well?" here:
>> http://www.isotronantennas.com/isohow.htm
>>
>> And here is some feedback from isotron antenna users:
>> http://www.isotronantennas.com/isospk.htm
>>
>> One of the reasons why this antenna is not used more often by OMs in 
>> Australia, could be the delivery restrictions. Bilal Company only ships 
>> to U.S., Canada, Puerto Rico, APO and FPO (see also here: 
>> http://www.isotronantennas.com/ordrpag2.htm ). Amateur Electronic Supply 
>> - on the other hand - ships overseas. But "due to current European Union 
>> (EU) regulations, AES CANNOT export most products to EU member countries 
>> and members of the European Economic Area (EEA)." (see also here: 
>> http://www.aesham.com/policy.shtml  & 
>> http://www.aesham.com/faq.shtml#topic4 ).
>>
>> Thanks for some explanations in advance on why you would avoid isotron 
>> antenna, Eric.
>>
>> Salut,
>>   Mathias
>>
>> PS: I have posted this question to our mail-list as I think your 
>> comments would be worthwhile for all other members of our club.
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>>
>>   
> 
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Adam "carneeki" Carmichael - VK2FNRD
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