Re: [Elecraft] [OT] Birds and DX
I use that on my boats to deter messy river Otters. Very effective Sent from my iPad > On Jun 8, 2020, at 12:00, Lyn Norstad wrote: > > I saw this on Shark Tank. They are EXTREMELY sharp! > > 73 > Lyn, W0LEN > > https://allsharktankproducts.com/shark-tank-products-home/critter-pricker-raccoon-deterrent/#:~:text=Critter%20Prickers%20are%20strips%20of,of%20roughly%20three%20square%20feet. > > > > -Original Message- > From: elecraft-boun...@mailman.qth.net > [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of RICHARD Martin > Sent: Sunday, June 07, 2020 5:02 PM > To: Michael K Bottles > Cc: elecraft@mailman.qth.net > Subject: Re: [Elecraft] [OT] Birds and DX > > You can purchase light weight telescoping fiberglass poles (about 25') with > a kite that looks like a bird of prey. The kite bobs, swirls and dives. > Quite an entertaining display. > > They work quite well keeping the birds and squirrels away from our fruit > trees. They are also popular along Sunset Drive in Pacific Grove to deal > with the seagulls. > > 73s > Dick KN6AA > >> On Sun, Jun 7, 2020, 12:09 Michael K Bottles via Elecraft < >> elecraft@mailman.qth.net> wrote: >> >> Yup, that is a flashy sparkly thing like the ribbon I suggested. Birds >> don’t seem to like that. >> >> Sent from my iPad >> >>>> On Jun 7, 2020, at 11:54, Paul Evans W4/VP9KF wrote: >>> >>> This _always_ works, as proven in a marina on my boat (and those that >>> adopted it!): >>> >>> Take old CD. Drill a small hole near the edge. Dangle from object or >>> anything nearby with thin string. >>> >>> Works when every other possible bird scarer had failed. No birds. No >> poop. >>> >>> 73, Paul. >>> __ >>> Elecraft mailing list >>> Home: http://mailman.qth.net/mailman/listinfo/elecraft >>> Help: http://mailman.qth.net/mmfaq.htm >>> Post: mailto:Elecraft@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 k...@icloud.com >> __ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft@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 dick93...@gmail.com > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@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 l...@lnainc.com > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@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 arch...@mail-archive.com
Re: [Elecraft] [OT] Birds and DX
I saw this on Shark Tank. They are EXTREMELY sharp! 73 Lyn, W0LEN https://allsharktankproducts.com/shark-tank-products-home/critter-pricker-raccoon-deterrent/#:~:text=Critter%20Prickers%20are%20strips%20of,of%20roughly%20three%20square%20feet. -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of RICHARD Martin Sent: Sunday, June 07, 2020 5:02 PM To: Michael K Bottles Cc: elecraft@mailman.qth.net Subject: Re: [Elecraft] [OT] Birds and DX You can purchase light weight telescoping fiberglass poles (about 25') with a kite that looks like a bird of prey. The kite bobs, swirls and dives. Quite an entertaining display. They work quite well keeping the birds and squirrels away from our fruit trees. They are also popular along Sunset Drive in Pacific Grove to deal with the seagulls. 73s Dick KN6AA On Sun, Jun 7, 2020, 12:09 Michael K Bottles via Elecraft < elecraft@mailman.qth.net> wrote: > Yup, that is a flashy sparkly thing like the ribbon I suggested. Birds > don’t seem to like that. > > Sent from my iPad > > > On Jun 7, 2020, at 11:54, Paul Evans W4/VP9KF wrote: > > > > This _always_ works, as proven in a marina on my boat (and those that > > adopted it!): > > > > Take old CD. Drill a small hole near the edge. Dangle from object or > > anything nearby with thin string. > > > > Works when every other possible bird scarer had failed. No birds. No > poop. > > > > 73, Paul. > > __ > > Elecraft mailing list > > Home: http://mailman.qth.net/mailman/listinfo/elecraft > > Help: http://mailman.qth.net/mmfaq.htm > > Post: mailto:Elecraft@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 k...@icloud.com > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@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 dick93...@gmail.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@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 l...@lnainc.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@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 arch...@mail-archive.com
Re: [Elecraft] [OT] Birds and DX
You can purchase light weight telescoping fiberglass poles (about 25') with a kite that looks like a bird of prey. The kite bobs, swirls and dives. Quite an entertaining display. They work quite well keeping the birds and squirrels away from our fruit trees. They are also popular along Sunset Drive in Pacific Grove to deal with the seagulls. 73s Dick KN6AA On Sun, Jun 7, 2020, 12:09 Michael K Bottles via Elecraft < elecraft@mailman.qth.net> wrote: > Yup, that is a flashy sparkly thing like the ribbon I suggested. Birds > don’t seem to like that. > > Sent from my iPad > > > On Jun 7, 2020, at 11:54, Paul Evans W4/VP9KF wrote: > > > > This _always_ works, as proven in a marina on my boat (and those that > > adopted it!): > > > > Take old CD. Drill a small hole near the edge. Dangle from object or > > anything nearby with thin string. > > > > Works when every other possible bird scarer had failed. No birds. No > poop. > > > > 73, Paul. > > __ > > Elecraft mailing list > > Home: http://mailman.qth.net/mailman/listinfo/elecraft > > Help: http://mailman.qth.net/mmfaq.htm > > Post: mailto:Elecraft@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 k...@icloud.com > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@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 dick93...@gmail.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@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 arch...@mail-archive.com
Re: [Elecraft] [OT] Birds and DX
Yup, that is a flashy sparkly thing like the ribbon I suggested. Birds don’t seem to like that. Sent from my iPad > On Jun 7, 2020, at 11:54, Paul Evans W4/VP9KF wrote: > > This _always_ works, as proven in a marina on my boat (and those that > adopted it!): > > Take old CD. Drill a small hole near the edge. Dangle from object or > anything nearby with thin string. > > Works when every other possible bird scarer had failed. No birds. No poop. > > 73, Paul. > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@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 k...@icloud.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@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 arch...@mail-archive.com
Re: [Elecraft] [OT] Birds and DX
This _always_ works, as proven in a marina on my boat (and those that adopted it!): Take old CD. Drill a small hole near the edge. Dangle from object or anything nearby with thin string. Works when every other possible bird scarer had failed. No birds. No poop. 73, Paul. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@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 arch...@mail-archive.com
Re: [Elecraft] [OT] Birds and DX
On 6/7/2020 9:11 AM, k...@juno.com wrote: > Contact the Audobon Society to see if you can have a nest for a bird of > prey (falcon perhaps). Hopefully, it is one that will like crows as > well... If you think hams are fanatics about ham radio things like DX or contesting, birders exhibit the same reaction about messing with their birds. The wife of one of my ham colleagues is very much a birder and that leads to do some interesting interaction. He put all of his antennas on his van - and no birds perch on it. 73 de K2ASP - Phil Kane Elecraft K2/100 s/n 5402 >From a Clearing in the Silicon Forest Beaverton (Washington County) Oregon __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@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 arch...@mail-archive.com
Re: [Elecraft] [OT] Birds and DX
On 6/7/2020 7:44 AM, Mike Short wrote: > Make a cage using non-conducting mesh and pvc pipe to put over the antenna. My loop is set on a covered porch. Birds don't rest on it - neither do radio signals (big disappointment documented elsewhere in this reflector). 73 de K2ASP - Phil Kane Elecraft K2/100 s/n 5402 >From a Clearing in the Silicon Forest Beaverton (Washington County) Oregon __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@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 arch...@mail-archive.com
Re: [Elecraft] [OT] Birds and DX
On 6/7/2020 7:19 AM, Dave wrote: >> So how to keep birds of a mag loop without lowing the Q? > Somehow figure out how to mount a fake owl on top? I had a "fake owl" (from the HRO catalog) mounted on the peak of the A-frame roof over the doorway of my former "House of 13 Antennas". The crows loved to dive-bomb and perch on it while ignoring all the other places provided by the antennas and left us plenty of "souvenirs" as a token of their affection.. 73 de K2ASP - Phil Kane Elecraft K2/100 s/n 5402 >From a Clearing in the Silicon Forest Beaverton (Washington County) Oregon __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@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 arch...@mail-archive.com
Re: [Elecraft] [OT] Birds and DX
Stick some toothpicks in strip of styrofoam. Mike AC5P On Sunday, June 7, 2020, 11:14:11 AM CDT, k...@juno.com wrote: Contact the Audobon Society to see if you can have a nest for a bird of prey (falcon perhaps). Hopefully, it is one that will like crows as well... 73 de Ed Sponsored by https://www.newser.com/?utm_source=part&utm_medium=uol&utm_campaign=rss_taglines_more Cities Roll Back Police Tactics, Tear Gas http://thirdpartyoffers.juno.com/TGL3141/5edd11db52ff411db60bast01vuc1 Earth Marks a Grim Toll http://thirdpartyoffers.juno.com/TGL3141/5edd11db6df3c11db60bast01vuc2 New Cop Killings Spark Outrage, Manslaughter Charge http://thirdpartyoffers.juno.com/TGL3141/5edd11db8880311db60bast01vuc3 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@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 a...@sbcglobal.net __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@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 arch...@mail-archive.com
Re: [Elecraft] [OT] Birds and DX
Contact the Audobon Society to see if you can have a nest for a bird of prey (falcon perhaps). Hopefully, it is one that will like crows as well... 73 de Ed Sponsored by https://www.newser.com/?utm_source=part&utm_medium=uol&utm_campaign=rss_taglines_more Cities Roll Back Police Tactics, Tear Gas http://thirdpartyoffers.juno.com/TGL3141/5edd11db52ff411db60bast01vuc1 Earth Marks a Grim Toll http://thirdpartyoffers.juno.com/TGL3141/5edd11db6df3c11db60bast01vuc2 New Cop Killings Spark Outrage, Manslaughter Charge http://thirdpartyoffers.juno.com/TGL3141/5edd11db8880311db60bast01vuc3 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@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 arch...@mail-archive.com
Re: [Elecraft] [OT] Birds and DX
On 6/7/2020 8:15 AM, Andy Durbin wrote: So how to keep birds of a mag loop without lowing the Q? I had a similar problem with one of my early mag loop attempts about 20 years ago. If your loop is a single turn type you could arrange for the tuning cap to be at the bottom with the coupling loop at the top. That puts the voltage-neutral point where the birds will perch, and they will have no effect on the tuning. The birds don't bother my two-turn mag loop (pix on my QRZ page) at all these days because they prefer to perch on the LPDA on the main tower. Gus Hansen KB0YH __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@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 arch...@mail-archive.com
Re: [Elecraft] [OT] Birds and DX
Try wire raps cut to leave about 1 inch protruding, maybe 2 or 3 inches apart. Wouldn't RF burn keep them away? On Sun, Jun 7, 2020, 10:54 AM Michael K Bottles via Elecraft < elecraft@mailman.qth.net> wrote: > Reflective sparkly tapes seem to keep birds off my boats. > Cheap to buy on Amazon. Search for “bird repellent”. > de K7IM > > Sent from my iPad > > > On Jun 7, 2020, at 07:48, Dave Cole wrote: > > > > 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@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 d...@nk7z.net > > __ > > Elecraft mailing list > > Home: http://mailman.qth.net/mailman/listinfo/elecraft > > Help: http://mailman.qth.net/mmfaq.htm > > Post: mailto:Elecraft@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 k...@icloud.com > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@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 jfrak...@gmail.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@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 arch...@mail-archive.com
Re: [Elecraft] [OT] Birds and DX
Reflective sparkly tapes seem to keep birds off my boats. Cheap to buy on Amazon. Search for “bird repellent”. de K7IM Sent from my iPad > On Jun 7, 2020, at 07:48, Dave Cole wrote: > > 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@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 d...@nk7z.net > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@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 k...@icloud.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@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 arch...@mail-archive.com
Re: [Elecraft] [OT] Birds and DX
Victor’s idea is very good. Some kind of material to create spikes, or a surface where they cannot perch. II think the cat would want to wander the neighborhood ;-) Dave wo2x Dave wo2x Sent from my iPad > On Jun 7, 2020, at 10:35 AM, Victor Rosenthal 4X6GP > wrote: > > 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 >> __ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft@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 k2vco@gmail.com > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@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 rocke...@gmail.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@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 arch...@mail-archive.com
Re: [Elecraft] [OT] Birds and DX
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@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 d...@nk7z.net __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@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 arch...@mail-archive.com
Re: [Elecraft] [OT] Birds and DX
Make a cage using non-conducting mesh and pvc pipe to put over the antenna. On Sun, Jun 7, 2020 at 09:16 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@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 ai4ns.m...@gmail.com > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@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 arch...@mail-archive.com
Re: [Elecraft] [OT] Birds and DX
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 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@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 k2vco@gmail.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@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 arch...@mail-archive.com
Re: [Elecraft] [OT] Birds and DX
Get a CAT to guard the antenna Sent from Mail for Windows 10 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@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 arch...@mail-archive.com
Re: [Elecraft] [OT] Birds and DX
"Somehow figure out how to mount a fake owl on top?" There are several fake owls in or near the tails of aircraft at my local airport. There seems to be just as much bird excrement on these aircraft and on those with no owls. 73, Andy, k3wyc From: Dave Sent: Sunday, June 7, 2020 7:19 AM To: Andy Durbin Cc: elecraft@mailman.qth.net Subject: Re: [Elecraft] [OT] Birds and DX Somehow figure out how to mount a fake owl on top? Dave wo2x Sent from my iPad > On Jun 7, 2020, at 10:16 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@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 rocke...@gmail.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@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 arch...@mail-archive.com
Re: [Elecraft] [OT] Birds and DX
Somehow figure out how to mount a fake owl on top? Dave wo2x Sent from my iPad > On Jun 7, 2020, at 10:16 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@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 rocke...@gmail.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@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 arch...@mail-archive.com
