[Elecraft] cobweb antenna

[Greg]

His website says UK sales ONLY.



On Fri, May 31, 2013 at 3:04 PM, Chris, G5VZ <chris at g5vz.co.uk> wrote:

> I don't know exactly what G3TPW is doing these days but M0ZIM is selling a
> commercial cobwebb: see http://www.mcr666.com/sales1/**
> ham-radio/4-meter-70-meg-base-**vertical-antenna/cobwebb-**antenna/<http://www.mcr666.com/sales1/ham-radio/4-meter-70-meg-base-vertical-antenna/cobwebb-antenna/>
>
> Usual disclaimers - I do have one of these antennas but otherwise no
> interest in the operation.  I think Mark will ship worldwide.
>
> Chris
> G5VZ / WG5VZ
>
> On 31/05/2013 22:44, Bill Blomgren wrote:
>
>> Exactly - Not sure what is going on with the "commercial" version's
>> guy... I suspect that is a side venture, and 'real work' probably has him
>> tied up.
>>
>> It's either that, or he doesn't want to fight with exchange rates,
>> shipping out of olde blighty, and all that stuff.
>>
>> That said.. I'm wondering if there are other baluns that might have
>> better performance up as far as say 6 meters... <heh> - allowing a 6th
>> band...
>>    ----- Original Message -----
>>    From: rckchp at comcast.net
>>    To: Bill Blomgren
>>    Cc: Elecraft at mailman.qth.net
>>    Sent: Friday, May 31, 2013 6:54 AM
>>    Subject: Re: [Elecraft] cobweb antenna
>>
>>
>>    Hello Bill,
>>
>>
>>
>>    I have no intent to denigrate the design and functionality of the
>> "Cobweb" style antenna but.........
>>
>>
>>
>>    Several years ago I was inclined to acquire the G3TPW commercial
>> version of the "CobWebb" antenna, I found the website ( www.g3tpw.co.u )
>> and sent an email asking how to order, method of payment & shipping
>> charges, etc. Got no response......I thought maybe there was some problem
>> with the 1st email attempt so I sent another.....still no response. So I
>> sent an inquiry via regular mail, including a self addressed (with postage)
>> return envelope......no reply whatsoever.......
>>
>>
>>
>>    So I can't comment on how well the G3TPW version functions......but in
>> consideration of my above described experience, maybe you should limit your
>> effort to a homebrew version.
>>
>>
>>
>>    Also, later I had good results with the homebrew version of the
>> Buddipole, built from free instructions on W3FF's homepage (
>> https://sites.google.com/site/**w3ffhomepage/<https://sites.google.com/site/w3ffhomepage/>). But back then I was doing more portable ops and since the commercial
>> version is more sturdy I decided to get one......saw one being offered on
>> ebay so I bid and won the auction. Eventually I lost one small bit and
>> needed a replacement part so I contacted W3FF and got very fast
>> response....even though I hadn't purchased direct from them.
>>
>>
>>
>>    So I've decided customer service is just as important as functionality
>> when deciding which products to acquire. Just my opinion...............
>>
>>
>>
>>    Rich  K2CPE
>>
>>    K2 #1102
>>
>>
>>
>>
>>
>>
>>
>>
>> ------------------------------**------------------------------**
>> ------------------
>>
>>
>>    From: "Bill Blomgren" <billblom at nc.rr.com>
>>    To: Elecraft at mailman.qth.net
>>    Sent: Thursday, May 30, 2013 10:27:22 PM
>>    Subject: [Elecraft] cobweb antenna
>>
>>
>>    I'm still in the "pre-purchase" stage.. but I'm sort of thinking that
>> the K3
>>    is where I'm going to end up.. Possibly with the preamp...and then
>> there is
>>    the big problem: what to make it to the air with.....
>>
>>    The idea of starting off with the buddipole system is out there - and
>> very
>>    possible...
>>
>>    I've also been reading up on the plusses and minuses of many of the
>>    alternatives that may be possible in an apartment life...
>>
>>    One is the magnetic loop - which is a tad pricey with the vac.
>> variable --
>>    lots of copper, and the need to tune the thing every time you change
>>    frequency - and not just antenna tuner stuff - as in changing the cap
>> on the
>>    antenna itself. It is a very high q (and thus voltage and current)
>>    critter...Rube Golberg figured out how to do that.. motors with long
>> screw
>>    drives into a sealed box with the cap inside..with very high voltages
>>    there... and thus requiring altitude for safety..
>>
>>    I came across a nifty square thing called a cobweb, which is more or
>> less
>>    semi-flat over 4-5 bands... is very light..and can be made of pvc pipe
>> or
>>    possibly fiber glass because it just has 5 wires in a big square.. One
>>    antenna to cover 20 17 15, 12 and 10 meters sounds interesting.. One
>> of the
>>    designs even works on 6, but has higher losses... (That may be the
>> baluns
>>    they use for a 4-1 impedance match and to go unbalanced...
>>
>>    Has anyone tried one of these critters, and if so, is the Elecraft
>> happy
>>    with it?
>>
>>
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