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Re: [IRCA] KAZ versus Pennant/Flag
In Northern MN we seemed to have a lot of summer 2018 days with some amount of daytime skywave. In a lot of my measurements it was hard to record representative signal levels when we got near 1500 and went beyond. (We were 90 miles or more from the only useful back-side signals: 1500, 1530, 1570 and 1600).
The temptation was to watch for a minute and grab the highest signal rise...but that wouldn't necessarily be accurate either.
Cheers!
Mark Durenberger
-----Original Message-----
From: IRCA <irca-bounces@xxxxxxxxxxxxxxxx> On Behalf Of Neil Kazaross
Sent: Tuesday, October 23, 2018 11:29 AM
To: irca@xxxxxxxxxxxxxxxx
Subject: Re: [IRCA] KAZ versus Pennant/Flag
Thx Mark, can't wait to see what you found. I hope you were still able to crush KSTP 1500 in back null while still having good nulls elsewhere with a fixed Vactrol setting using 170 ft.
73 KAZ
On Tue, Oct 23, 2018 at 11:26 AM Mark Durenberger <Mark4@xxxxxxxxxxxxxxx>
wrote:
> I'll be publishing work on the comparison between a 140-foot and a
> 170-foot DKAZ, data taken this summer.
>
>
> Cheers!
>
> Mark Durenberger
>
> -----Original Message-----
> From: IRCA <irca-bounces@xxxxxxxxxxxxxxxx> On Behalf Of Neil Kazaross
> Sent: Tuesday, October 23, 2018 10:38 AM
> To: irca@xxxxxxxxxxxxxxxx
> Subject: Re: [IRCA] KAZ versus Pennant/Flag
>
> A major advantage of the DKAZ is the significantly wider back null so
> that more back end QRM is taken out or greatly reduced. Of course, the
> more narrow beamwidth is very useful on crowded freqs and one reason I
> am able to catch 2nd tier stations from west coast states here in IL.
>
> Yeah, the don't have a ton of signal pickup at the low end, but
> logging 2CR
> 549 here in IL on Oct. 1 using only a 120 ft DKAZ should indicate a
> usable antenna. Of course I amplify with the FLG100LN. Maybe sometime
> some DXer with enough land will compare a 200ft+ DKAZ on the low end
> vs a more typical size.
>
> The problem with going huge is that high end F/B starts to suffer and
> the beam also becomes wider in the upper part of the band. The DKAZ is
> a compromise antenna and really not intended to cover a 3:1 bandwidth
> as well as some of us would like. But the patterns and the DX I can
> log using it put the single loop genre of antennas to shame at least here in IL.
>
> Again I will stress amplification for any of the guys here considering
> trying to squeeze in a smaller DKAZ. 73 KAZ
>
> On Mon, Oct 22, 2018 at 10:49 PM Chuck Hutton <charlesh3@xxxxxxx> wrote:
>
> > So I think we think alike - the DKAZ is narrower (front and back)
> > than a flag.
> >
> > A DKAZ is much more of a pain to put up, but in the end size pays
> > off for those that appreciate the better antenna. (except at the
> > bottom of the band)
> >
> >
> > Chuck
> >
> >
> > ________________________________
> > From: IRCA <irca-bounces@xxxxxxxxxxxxxxxx> on behalf of Nick
> > Hall-Patch < nhp@xxxxxxxx>
> > Sent: Monday, October 22, 2018 8:19 PM
> > To: Mailing list for the International Radio Club of America
> > Subject: Re: [IRCA] KAZ versus Pennant/Flag
> >
> > Try this, Chuck (or anyone else who is having problems):
> >
> >
> > http://www3.telus.net/public/shallpat/4all/Antenna%20alternatives_st
> > ub
> > -re-FlagDKaz.pdf
> >
> > As the file name says, it's just the relevant
> > slides of the presentation. Pages 10, 11 and 12
> > are repeated pages with more detail, just like the presentation, but
> > makes for strange reading.
> >
> >
> >
> >
> > Nick
> >
> >
> > At 01:47 2018-10-23, Chuck Hutton wrote:
> > >Nick:
> > >
> > >
> > >I tried to open the file with PowerPoint 2017 but got a string of
> > >error messages about missing dll's.
> > >
> > >
> > >Any chance of a 1 paragraph summary? (Sorry to sound like
> > >management)
> > >
> > >
> > >Chuck
> > >
> > >
> > >
> > >
> > >________________________________
> > >From: IRCA <irca-bounces@xxxxxxxxxxxxxxxx> on behalf of Nick
> > >Hall-Patch <nhp@xxxxxxxx>
> > >Sent: Monday, October 22, 2018 5:39 PM
> > >To: Mailing list for the International Radio Club of America; C B
> > >Subject: Re: [IRCA] KAZ versus Pennant/Flag
> > >
> > >
> > >
> > >Not wishing to blow the personal horn, but please check out:
> > >
> > >http://durenberger.com/documents/NHP2016.pptx
> > >The DXFishbarrel -
> > >durenberger.com<http://durenberger.com/documents/NHP2016.pptx>
> > >durenberger.com
> > >Antenna Alternatives -- really? Is a non-resonant terminated loop
> > >an alternative to a DKaz? All non-resonant terminated loops give
> > >much the same depth of nulls to stations off the back end of the
> > >antenna..
> > >
> > >
> > >
> > >
> > >starting at slide 34, for a comparison of the DKaz with a Flag at
> > >Grayland. (presentation from the 2016 IRCA convention)
> > >
> > >Unless you have Quicktime on the computer you're using, you may not
> > >be able to play slide 37, but it's not radically important to the
> > >overall comparison.
> > >
> > >best wishes,
> > >
> > >Nick
> > >
> > >
> > > >Begging pardon if Iâm speaking out of turn - my FLAGS (45 x 27â)
> > > >with WELLBROOK FLG100 heads have plenty of performance
> > -
> > > >
> > > >One problem with âbiggerâ in the urban environment is â youâre
> > > >amplifying noise along with siignals.
> > > >
> > > >I wonder what is gained with a KAZ or DKAZ on city lots...
> > >
> > >Colin Newell - Victoria - B.C. CANADA - At 23:14 2018-10-22, R.
> > >Colin Newell wrote:
> > >
> > > >Begging pardon if Iâm speaking out of turn - my FLAGS (45 x 27â)
> > > >with WELLBROOK FLG100 heads have plenty of performance
> > -
> > > >
> > > >One problem with âbiggerâ in the urban environment is â youâre
> > > >amplifying noise along with siignals.
> > > >
> > > >I wonder what is gained with a KAZ or DKAZ on city lots...
> > > >
> > > >Colin Newell - Victoria - B.C. CANADA -
> > >
> > > > On Oct 22, 2018, at 3:45 PM, C B <bevdxer@xxxxxxxxx> wrote:
> > > >
> > > > Kaz,
> > > > Thanks for taking the time to elaborate. I am trying to think
> > >outside of the box and see if I might be able to cram a 100 to 112
> > >ft. DKAZ into the southern boundary of my city residential lot.
> > >Any longer and it would have to be anchored in the street. I doubt
> > >the city would appreciate that approach.
> > > > 73,
> > > >
> > > >
> > > > To Post a message: irca@xxxxxxxxxxxxxxxx
> > > >
> > >_______________________________________________
> > >
> > >Nick Hall-Patch
> > >Victoria, BC
> > >Canada
> > >_______________________________________________
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> > >
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> > >
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> > >
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> > >
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> >
> > Nick Hall-Patch
> > Victoria, BC
> > Canada
> >
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