Re: [Elecraft] cobweb antenna

Chris, G5VZ Sat, 01 Jun 2013 02:48:03 -0700

Greg, all,

I see his web site has now been updated and there are options forinternational shipment - I was sure he'd told me he had sold to USA andCanada in the recent past.


Chris
G5VZ / WG5VZ

On 01/06/2013 03:07, Greg wrote:

His website says UK sales ONLY.

On Fri, May 31, 2013 at 3:04 PM, Chris, G5VZ <ch...@g5vz.co.uk<mailto:ch...@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/

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: rck...@comcast.net <mailto:rck...@comcast.net>
To: Bill Blomgren
Cc: Elecraft@mailman.qth.net <mailto:Elecraft@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/ ). 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" <billb...@nc.rr.com
<mailto:billb...@nc.rr.com>>
To: Elecraft@mailman.qth.net <mailto:Elecraft@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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Re: [Elecraft] cobweb antenna

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