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- Subject: Re: [NRC-AM] [IRCA] DKAZ Antenna
- From: Mark Connelly <markwa1ion@xxxxxxx>
- Date: Tue, 18 Aug 2015 23:01:18 -0400
- Delivered-to: irca@xxxxxxxxxxxxxxxx
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DKAZ versus Waller Flag ( http://nx4d10.wix.com/waller-flag ) ... does one do much better than the other?
This question is more about directivity than gain since it is assumed that low-noise amplification can be applied as needed to boost weaker signals above the receiver's noise floor.
Mark Connelly, WA1ION
South Yarmouth, MA
-----Original Message-----
From: neilkaz <neilkaz@xxxxxxxxxxxxx>
To: Mailing list for the International Radio Club of America <irca@xxxxxxxxxxxxxxxx>; 'NRC' <am@xxxxxxxxxxx>
Cc: am <am@xxxxxxxxxxx>
Sent: Tue, Aug 18, 2015 9:42 pm
Subject: Re: [NRC-AM] [IRCA] DKAZ Antenna
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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