Then we shrank it by 70% (AX2 :)

Wayne


> On Sep 19, 2022, at 11:32 AM, Jim Brown <j...@audiosystemsgroup.com> wrote:
> 
> Wayne is quite proud of that antenna design for its intended purpose, 
> walking/biking portable. We chatted about it at Visalia when his design was 
> still on paper.
> 
> 73, Jim K9YC
> 
> On 9/19/2022 10:53 AM, David Gilbert wrote:
>> A comparison to any other antenna would be useful.  A comparison to a 50 ohm 
>> resistor with a similar counterpoise wire would be even more useful as a 
>> baseline measurement.  If anyone wants to lend me their AX1 I will do that.
>> 73,
>> Dave   AB7E
>> On 9/19/2022 10:33 AM, Ron Gruner wrote:
>>> I've been impressed by how well my little AX-1 whip antenna performs on 20
>>> meters. Here's a photo of the rig: https://gruner.com/k4rhg/andover_ma.png
>>> and the propagation map: https://gruner.com/k4rhg/wspr_2watts_sep16_2022.png
>>> 
>>> A friend, Derek Rowell (AK1WI), gave me a two-watt WSPR kit he had designed
>>> -- easy and fun to build. I connected the unit to the AX-1 sitting in a
>>> window sill facing west and strung the out-of-the-box counterpoise over a
>>> lamp shade and bed headboard. No idea what the SWR is, but it must be
>>> pretty good.
>>> 
>>> I immediately began receiving propagation reports and within 24 hours had
>>> reports from 240 unique stations. The farthest was VK5ARG (17,276 km) with
>>> a SNR of -21. Even though the window faced the west, propagation into
>>> Europe was strong with SV9KI (7,800 km) reporting -26 SNR. The
>>> propagation report is from http://wspr.rocks/  <http://wspr.rocks/>
>>> 
>>> I've found that WSPR is a great way to evaluate antennas. The AX-1 seems
>>> to be performing very well.
>>> 
>>> 73,
>>> Ron Gruner
>>> K4RHG
>>> 
> 
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