Owls don't work unless (maybe) you can mechanize it so that the wings
flap and it hoots.
I have a roof with pigeon issues, and the only thing that works is to
make the surface unattractive to them. If there is some way you could
attach spikes to the top surfaces... maybe superglue broken glass to it?
Or wrap it with fiberglass insulation, or use that plastic stuff used to
protect kids from the supports of a swing set to make it too fat for
them to want to sit on.
The only thing that works (other than birdshot) is to make the surface
unattractive.
73,
Victor, 4X6GP
Rehovot, Israel
Formerly K2VCO
CWops no. 5
http://www.qsl.net/k2vco/
On 07/06/2020 17:15, Andy Durbin wrote:
I use a home brew mag loop on 30 m band and work into Asia most mornings with it.
The loop tunes to a near perfect match (1.00:1 SWR) but becomes instantly detuned
when a dove perches on top of it. SWR jumps instantly to > 3.0:1 and trips my
High SWR monitor. The birds look stupid but they are smart enough not to
straddle the loop opening. I imagine full loop voltage between their legs would
de-tune them a bit but they just perch one side or the other.
Damn dove nearly cost me a QSO with JD1 this morning and that was new DX for 30
m. I tail ended with FT8, he came back, I started to send my report, High SWR
trip, run to back door to chase the dove away, and got back before JD1 had
given up on me.
So how to keep birds of a mag loop without lowing the Q?
73,
Andy k3wyc
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