] [NRC-AM] DKAZ Antenna
Date: Fri, 21 Aug 2015 21:41:51 +
This is a repeat of my earlier comment to Nick, where I guessed /
thought that the minima does not really move.
Ad I see it, the issue here is that the best null is the sharpest
(narrowest) null. If you want a null to cover something
it a bit.)
Chuck
Date: Thu, 20 Aug 2015 04:37:15 +
To: irca@hard-core-dx.com
From: n...@ieee.org
Subject: Re: [IRCA] [NRC-AM] DKAZ Antenna
If you get ambitious Jim, try a Vactrol termination, like Mark C.
used in his Flag antenna. It's amazing how stations fairly far off
the exact back end
At 12:40 21-08-15, you wrote:
Nick: See CAPS below
Mark Durenberger
-Original Message- From: Nick Hall-Patch
I haven't had experience with two D-Kaz Mark, but do I gather then
that you haven't seen evidence of null steering with the DKaz
alone? I HAVEN'T SEEN EVIDENCE OF STEERING,
So is the minima actually moving or is the rear-response beamwidth changing?
Or is that the same thing? And Nick: (especially in your 1640/1680
example), might there be some skywave in the mix? Makes an Old Novice
wonder...
KAZ YOUR THOUGHTS ??? ALSO...SEE LAST PARAGRAPH BELOW
Mark
...@gmail.com; fr...@nautel.com
Date: Fri, 21 Aug 2015 15:49:59 -0500
Subject: Re: [IRCA] [NRC-AM] DKAZ Antenna
So is the minima actually moving or is the rear-response beamwidth changing?
Or is that the same thing? And Nick: (especially in your 1640/1680
example), might there be some skywave
, 2015 5:01 PM
To: irca@hard-core-dx.com irca@hard-core-dx.com
Subject: Re: [IRCA] [NRC-AM] DKAZ Antenna
Modelling numbers for a 20 x 140 DKAZ to back up what I said:- best null
is -42 dB and the -6 dB null width is 72 degrees.- lower the termination
by 80 Ohms and the best null
...@msn.com
To: irca@hard-core-dx.com
Subject: RE: [IRCA] [NRC-AM] DKAZ Antenna
Date: Fri, 21 Aug 2015 21:41:51 +
This is a repeat of my earlier comment to Nick, where I guessed / thought that
the minima does not really move.
Ad I see it, the issue here is that the best null is the sharpest
Subject: Re: [IRCA] [NRC-AM] DKAZ Antenna
Chuck, please explain how you are measuring - 6 dB null width. The entire
back half of the antenna pattern is down at least 10 dB from beam peak with a
DKAZ when measured at a typical elevation angle of 15 deg.
73 KAZ
-Original Message
@hard-core-dx.com
From: n...@ieee.org
Subject: Re: [IRCA] [NRC-AM] DKAZ Antenna
If you get ambitious Jim, try a Vactrol termination, like Mark C.
used in his Flag antenna. It's amazing how stations fairly far off
the exact back end of the antenna get better nulls with a remotely
variable
of the ballpark
(great Pest control) and adjacent channels do benefit from that additional
nulling.
Cheers!
Mark Durenberger
-Original Message-
From: Chuck Hutton
Sent: Wednesday, August 19, 2015 11:47 PM
To: irca@hard-core-dx.com
Subject: Re: [IRCA] [NRC-AM] DKAZ Antenna
Nick
-Original Message- From: Chuck Hutton
Sent: Wednesday, August 19, 2015 11:47 PM
To: irca@hard-core-dx.com
Subject: Re: [IRCA] [NRC-AM] DKAZ Antenna
Nick -
Are you saying the DKAZ null can actually be steered? If so, how
much?Or are you saying that deepening the null at 180 degrees means
---BeginMessage---
The typical end-fed unterminated wire - call it longwire or shortwire but
basically anything 50 to 300 ft. - has SLIGHT nulls / minima at a right angle
to the wire and slightly more pick-up in the direction heading away from the
feedline / receiver (maybe a dB or two). In
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 4x4 timber posts for the
main supports and 2 electrical PVC pipe for the
---BeginMessage---
One good sanity check would be to do up a quick and simple SuperLoop. Align it
similarly to the DKAZ and put it far enough away so as not to interact.
http://www.bamlog.com/superloop.htm
http://www.bamlog.com/vartermloop.htm
Since this would be mostly for pest-null
If you get ambitious Jim, try a Vactrol termination, like Mark C.
used in his Flag antenna. It's amazing how stations fairly far off
the exact back end of the antenna get better nulls with a remotely
variable termination. At Grayland, it even helped kill the local noise.
best wishes,
If you get ambitious Jim, ...
Whoops, sorry, James... got to get my names exact, hi. It's been a long day..
best wishes,
Nick
At 15:29 19-08-15, you wrote:
Hi Neil,
Thanks from a happy DKAZ user. The antenna took 3 weekends to build,
due to the Texas heat, clearing a path through
it
a bit.)
Chuck
Date: Thu, 20 Aug 2015 04:37:15 +
To: irca@hard-core-dx.com
From: n...@ieee.org
Subject: Re: [IRCA] [NRC-AM] DKAZ Antenna
If you get ambitious Jim, try a Vactrol termination, like Mark C.
used in his Flag antenna. It's amazing how stations fairly far off
the exact
---BeginMessage---
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
The next test at Grayland maybe
At 03:01 19-08-15, Mark wrote:
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
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