Various references give numbers ranging from .08
to .15 wavelengths circumference. Before you reach
this, you may find that the loop is resonant below
80 due to the coax capacitance. I would recommend
3 ft corner to corner as a start.
Rick N6RK
Scott MacKenzie wrote:
> What size would you suggest for 80M?
>
> -----Original Message-----
> From: towertalk-bounces@contesting.com
> [mailto:towertalk-bounces@contesting.com] On Behalf Of Richard (Rick)
> Karlquist
> Sent: Tuesday, January 01, 2008 3:21 PM
> To: Top Band Reflector; reflector -tower; NCCC
> Subject: [TowerTalk] 160 meter receiving loop antenna schematic has
> beenposted
>
> Due to numerous requests, I have posted a schematic
> of the 160 meter receiving loop antenna that I used in
> the recent Stew Perry contest. This is what worked
> (well) for me. As always, YMMV.
>
> The feed system seems intuitively obvious to me but
> no one seems to do it this way. Don't ask me why :-)
> The 4 foot size was chosen because this was originally
> a 2.5 MHz loop for receiving WWV. For 160m, you might
> want to make a somewhat bigger loop to get more output,
> although this size was adequate.
>
> See:
>
> http://www.n6rk.com/160RXloop.jpg
>
> Rick N6RK
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