Re: [IRCA] [NRC-AM] DKAZ Antenna

[<jniven@xxxxxxxxxxxxx>]

Hi Neil,

Thanks from a happy DKAZ user. The antenna took 3 weekends to build, due to the Texas heat, clearing a path through the trees and gathering all the supplies. I decided to make this a permanent installation, using 4"x4" timber posts for the main supports and 2" electrical PVC pipe for the 22' supports, all seemed to work just fine.
As for the termination, I will try a 5k pot and see if I can get a better null to the north. The Dallas station come in pretty good here, 570 KLIF, 820 WBAP, these would be the stations I would like to null. Also, at present I am using coax direct onto the feed end of the antenna, so I have not added the matching transformer as yet, next step.

As for San Angelo stations, I have only logged KGKL 960 but nothing else at present.
I really don't have enough width on my land for a side by side DKAZ, sounds like a great idea though.
I am presently working on my Spanish, I know some which helps with station identifications, but more is helpful.

Thanks
James


 
---- neilkaz <neilkaz@xxxxxxxxxxxxx> wrote: 
> This is good to hear about another happy DKAZ user. You may find that you are an even more happy DKAZ user if you spend the effort to manually fine tune Rt to see if you can get even better back nulls. This is best done in the daytime. I'd guess you might improve back nulls by a few dB unless 900 ohms is perfect. I do realize that you probably don't have much daytime stuff from 300 deg into Austin. Does San Angelo come in?
> 
> Do you have land to array two of these side by side for a more narrow beamwidth? 
> 
> If not fluent in Spanish aimed at 120 from Austin, I expect you'll want to improve your command of that language.  73 KAZ
> 
> -----Original Message-----
> >From: James Niven <jniven@xxxxxxxxxxxxx>
> >Sent: Aug 18, 2015 8:11 PM
> >To: 'NRC' <am@xxxxxxxxxxx>
> >Cc: 'Mailing list for the International Radio Club of America' <irca@xxxxxxxxxxxxxxxx>
> >Subject: [IRCA] DKAZ Antenna
> >
> >Hi All,
> >
> > 
> >
> >Just wanted to report I have completed my DKAZ antenna over the past weekend
> >and I have had a chance to test it out the past few nights.
> >
> >I followed the design as Mark Durenberger's article
> >http://www.durenberger.com/documents/DKAZREPORT051214.pdf I built the 140
> >foot long with 22 feet high supports. I am at present using a 900 ohm fixed
> >1 watt resistor and the direction is 120 degree.
> >
> > 
> >
> >I have been comparing the DKAZ to my present 150 foot longwire running
> >pretty much in the same direction, so far, the performance of the DKAZ has
> >been very encouraging. Signals are appearing a lot stronger and earlier in
> >the evening than the Longwire and I can tell signals from the north are
> >reduced, while signals from the South are a lot stronger and louder.
> >
> > 
> >
> >On a couple of frequencies I have checked, on the DKAZ there is a station
> >with a decent signal while the Longwire has no station at all or a different
> >station.
> >
> >I am still to hear a new station with this antenna but it will happen.
> >
> > 
> >
> >Thanks for the fine article Mark and answering my questions.
> >
> > 
> >
> >James Niven
> >
> >Austin, Texas
> >
> > 
> >
> >
> >
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