[Elecraft] [OT] Birds and DX

Dave Cole dave at nk7z.net
Sun Jun 7 10:47:33 EDT 2020


Add upward pointing non-metallic pins along the top half of the loop.

73, and thanks,
Dave (NK7Z)
https://www.nk7z.net
ARRL Volunteer Examiner
ARRL Technical Specialist
ARRL Asst. Director, NW Division, Technical Resources

On 6/7/20 7:15 AM, 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
> 
> 
> 
> 
> 
> 
> 
> 
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft at mailman.qth.net
> 
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to dave at nk7z.net
> 


More information about the Elecraft mailing list