FYI: Believe it or not, you can buy the Vactrol thru Amazon!
Mark Durenberger
-Original Message-
From: Sylvain Naud
Sent: Thursday, February 25, 2016 12:57 AM
To: Mailing list for the International Radio Club of America
Subject: Re: [IRCA] VACTROL build parts list -
As I also have
THANKS so much for all of the constructive input! The idea of super-sized
loops in the desert is great...except for the probability of wind issues at
this time of year.
I s'pect we'll settle on something practical, keeping in mind Nick's
comment; will let you know. Right now the thinking is
Les: Are you interested in building things? I have a refined
remote-terminator system for Flag/D-Kaz/Bev antennas based on Mark
Connelly's work...let me know if you want the diagram.
Cheers!
Mark Durenberger
On The Road Again
-Original Message-
From: Les Rayburn
Sent: Wednesday,
Finally in possession of a Wellbrook ALA-100 (sometimes us old folks move
slowly).
I'm intrigued by the idea of a large magnetic loop and seeking war stories
from anyone who has built these larger-circumference arrays.
Wellbrook suggest a 60-foot circumference is about as large as you should
Kaz, I will have a couple of these remote terminators built by the end of
April for cabin (wx permitting) and desert "broadband F/B" evaluation.
Cheers!
Mark Durenberger
On The Road Again
-Original Message-
From: Neil Kazaross
Sent: Friday, February 19, 2016 3:15 PM
To: Mailing list
Thank you Walt!
Mark Durenberger
On The Road Again
-Original Message-
From: Walter Salmaniw
Sent: Monday, February 08, 2016 1:49 PM
To: dxplo...@yahoogroups.com
Subject: [IRCA] A sad anniversary
Just a reminder to spend a moment in thought or prayer. Tomorrow will mark
the
I'm currently in SW Florida...will try for 1500 tonight...
Mark Durenberger
On The Road Again
-Original Message-
From: Glenn Hauser
Sent: Saturday, February 06, 2016 12:48 AM
To: Mailing list for the International Radio Club of America ; Jr.Paul B.
Walker
Cc: AMFMTVDX -
Durenberger Mobile < ma...@durenberger.com> wrote: > Walt: I'm
curious; does LW signal strength improvement justify a 100 ft. >
circumference or beyond? I s'pect there's a practical/empirical-best-size;
> probably beyond 60 feet...but where would you suggest stopping? > >
Walt: I'm curious; does LW signal strength improvement justify a 100 ft.
circumference or beyond? I s'pect there's a practical/empirical-best-size;
probably beyond 60 feet...but where would you suggest stopping?
Cheers!
Mark Durenberger
On The Road Again
-Original Message-
From:
This gives me warmish fuzzies...we're planning on doing LW sleuthing on our
2016 SBT DXPedition to the Eastern Utah desert...
Mark Durenberger
On The Road Again
-Original Message-
From: R. Colin Newell
Sent: Tuesday, February 02, 2016 5:45 PM
To: Mailing list for the International
It's become a "Border Blaster" lately
Mark Durenberger
On The Road Again
-Original Message-
From: Saul Chernos
Sent: Thursday, September 24, 2015 7:16 PM
To: irca@hard-core-dx.com ; a...@nrcdxas.org ; amfmt...@mailman.qth.net ;
m...@googlegroups.com ; m...@yahoogroups.com
Subject:
Yes! Lots of new loggings from Central Minnesota with a D-Kaz oriented 260
degrees.
Mark Durenberger
On The Road Again
-Original Message-
From: R. Colin Newell
Sent: Saturday, September 19, 2015 12:35 PM
To: Mailing list for the International Radio Club of America
Subject: [IRCA]
I wonder if it's time to set up a D-Kaz Users' Group somewhere?
Would someone here be willing to do that? Then we can stop wasting others'
bandwidth!
Mark Durenberger
On The Road Again
-Original Message-
From: Nick Hall-Patch
Sent: Friday, August 21, 2015 11:08 PM
To: Mailing
Mighty kind of you OM. Let's do that ! Yes, I'll be glad to moderate.
Mark Durenberger
On The Road Again
-Original Message-
From: Wayne Heinen
Sent: Saturday, August 22, 2015 9:48 AM
To: 'Mark Durenberger Mobile' ; 'Mailing list for the International Radio
Club of America' ; 'DX
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
Bill's report on an earlier Murphy-plagued trip are heard in his recent talk
to the joint DX convention in Fort Wayne.
It's posted at durenberger-dot-com
Mark Durenberger
On The Road
-Original Message-
From: Bill Whitacre
Sent: Saturday, August 08, 2015 7:14 AM
To: Mailing list for
KMTL heard as well in North Central Minnesota an hour before sign-on
time...off the BACK side of a D-Kaz antenna.
Mark Durenberger
On The Road Again
-Original Message-
From: Paul B. Walker, Jr.
Sent: Tuesday, August 04, 2015 8:47 PM
To: dx...@nrcdxas.org ; DXLD ; Mailing list for the
Or use a D-Kaz antenna and you'll KNOW which one it is :-))
Mark Durenberger
On The Road Again
-Original Message-
From: Rick Dau
Sent: Friday, July 31, 2015 11:46 AM
To: a...@nrcdxas.org ; irca@hard-core-dx.com ; a...@yahoogroups.com
Cc: amradio...@nrcdxas.org ; k0kan.t...@gmail.com
Thanks to a rainy afternoon, the rest of the technical talks and slides have
been published.
Cheers!
Mark Durenberger, CPBE
-Original Message-
From: Mark Durenberger Mobile
Sent: Tuesday, July 28, 2015 10:34 AM
To: DX @NRC ; DX-IRCA ; Dabelstein Skip ; WTFDA-AM ; MNDXC ; Shafer Mike
Thank you Steve! We thoroughly missed Patrick at this year's services.
Mark Durenberger
On The Road Again
-Original Message-
From: Steve
Sent: Tuesday, July 28, 2015 8:02 PM
To: Mailing list for the International Radio Club of America
Subject: Re: [IRCA] 2015 CONVENTION TALKS
, the rest of the technical talks and slides
have
been published.
Cheers!
Mark Durenberger, CPBE
-Original Message-
From: Mark Durenberger Mobile
Sent: Tuesday, July 28, 2015 10:34 AM
To: DX @NRC ; DX-IRCA ; Dabelstein Skip ; WTFDA-AM ; MNDXC ; Shafer Mike
Subject: 2015 CONVENTION TALKS
The first set of technical papers from the 2015 joint DX Convention is now
available for listening or downloading at durenberger-dot-com.
I'm working the rest on 17 meters :-)) and should have them published
shortly.
Cheers!
Mark Durenberger, CPBE
I will record the audio and post it on my website www,durenberger.com
Slides will be there as well.
Mark Durenberger, CPBE
On The Road Again
Original Message-
From: Scott Fybush
Sent: Wednesday, July 01, 2015 5:44 PM
To: Duane Whittingham ; a...@nrcdxas.org ; Mailing list for the
Gary: Wish you could find a way to come to the Fort Wayne
convention...methinks Nick will be commenting on his own successes...
Cheers!
Mark Durenberger, CPBE
On The Road Again
-Original Message-
From: d1028g...@comcast.net
Sent: Monday, June 29, 2015 9:33 AM
To: Mailing list for
Les, two great tools:
http://www.topazdesigns.com/ambc/
Arguably the most useful and likely to be the most up-to-date reference,
this site will give you local sunset/sunrise times for stations and you'll
also find several other ways to index desired targets as well as to help you
with
WELL DONE KAZ!
We have literally dozens of TOH and BOH recordings to go thru from the
Desert DXPedition. I'll try to catch up by Christmas g
Mark Durenberger
On The Road Again
-Original Message-
From: neilkaz
Sent: Friday, May 01, 2015 9:47 PM
To: a...@nrcdxas.org
Cc:
Remember too it's the mantra (new policy?) of the Enforcement Bureau that
they only respond to INTERFERENCE COMPLAINTS.
Mark Durenberger
On The Road Again
-Original Message-
From: Scott Fybush
Sent: Sunday, April 26, 2015 10:02 PM
To: a...@yahoogroups.com ; Mailing list for the
KUDOS Rob!
Mark Durenberger
Fort Myers, Florida
-Original Message-
From: Robert Ross
Sent: Saturday, March 07, 2015 7:08 AM
To: IRCA AM List
Subject: [IRCA] ULR DX…Station # 1100 Logged this morning….1130 WLBA
Gainesville, GEORGIA!!
Hi Guys:
Well…it took 7 Years, 2 Months and 6
Time for a serious FLAT-TOP antenna like they used in the 20's and early
1930's :-))
Mark Durenberger
-Original Message-
From: Patrick Martin
Sent: Saturday, March 07, 2015 6:33 AM
To: IRCA
Subject: Re: [IRCA] KARR 1460 Kirkland WA new CP
I would think 1460 exhausted all locations
Radio-timetraveller has updated its great MW coverage map folders:
http://radio-timetraveller.blogspot.com/
Click on Day and Night maps in the upper-right-hand corner and download zip
files that open into updated coverage/info maps, by frequency.
Pretty good info, though perhaps not as
The problem I have with some noise-cancelling headphones is that, as part of
the algorithm, high-end frequencies are rolled off to make cancellation more
effective. So...with the ones I've tried at least...you give up clarity for
ambience suppression.
Not worth it for my old ears g
Mark
The thing that's interesting about South Florida MW is the daytime fades and
beats as stations from the Southern states come sliding across the Gulf.
They're a long way away but they're in there without the benefit of skywave
:-))
-Original Message-
From: Mark Connelly
Sent: Sunday,
DAY 1: 01-24-15 Minneapolis to the Iowa/Illinois line on standard car
radio
(50-KILOWATTERS OMITTED)
540KWMTFORT DODGE IA
550WSAUWAUSAU WI
560WINDCHICAGO IL
570WNAXYANKTON SD
580WKTYLA CROSSE WI
590KXSPOMAHA NE
600WMTCEDAR RAPIDS IA
610
Likely they needed to get out of the digital delay for fair-goers. This
would also be important for their sports broadcasts where fans like to
listen in the stands...in real time, not delayed by the digital processing.
It would be interesting to know if they got any complaints about the loss
I'm 1400 miles away at the moment...but I seriously HOPE so!
Mark Durenberger
-Original Message-
From: John Sampson
Sent: Friday, September 26, 2014 9:19 PM
To: Mailing list for the International Radio Club of America
Subject: [IRCA] WCCO IBOC?
Question for those in the Twin Cities
stuff :-))
Cheers!
Mark Durenberger
-Original Message-
From: Glenn Hauser
Sent: Tuesday, September 23, 2014 10:39 PM
To: DX @NRC ; DX-IRCA ; Mark Durenberger Mobile
Subject: Re: MW CX
Mark,
What desert, Utah? There are storms over Kansas, parts of Oklahoma,
Nebraska. It`s certainly
A-Index 22-24 today
MD
-Original Message-
From: Nick Hall-Patch
Sent: Friday, September 19, 2014 10:00 PM
To: Mailing list for the International Radio Club of America
Subject: [IRCA] not TP 19 Sep Victoria version
No doubt about itthat morning was worth missing. If it wasn't
On your way over Dennis?
I leave tomorrow for a couple of days' drive west.
Mark Durenberger
Minnesota
-Original Message-
From: Dennis Gibson
Sent: Wednesday, September 17, 2014 1:56 PM
To: Mailing list for the International Radio Club of America
Subject: Re: [IRCA] Billings MT WX
This is the stuff you chase down early morning, when it's still dark to your
West and you can use that to advantage. The best example may be 1000, where
we simply waited for WMVP Chicago to fade away in the daylight, and that let
in KOMO.
Astute citizens will note that some of these catches
of T-storms for a week and a half
-Original Message-
From: Mark Durenberger Mobile ma...@durenberger.com
Sent: Jun 24, 2014 3:13 PM
To: @NRC DX a...@nrcdxas.org, DX-IRCA irca@hard-core-dx.com, MNDXC
m...@yahoogroups.com, Mike Shafer mikeg...@gmail.com, Fred-ARRL
Baumgartner k0...@arrl.net
It was an unusually quiet night last night and we opened the SDR on the
140-ft. D-Kaz antenna at Midnight, oriented NNW in GS EN25. Propagation
wasn't quirky enough, however, and no real long-distance snatches were made
(560 is an exception as is 1310...from Madison!) The obvious U.S. Clears
Durenberger Mobile ma...@durenberger.com
wrote:
It was an unusually quiet night last night and we opened the SDR on the
140-ft. D-Kaz antenna at Midnight, oriented NNW in GS EN25. Propagation
wasn't quirky enough, however, and no real long-distance snatches were
made
(560 is an exception as is 1310
PM
To: Mailing list for the International Radio Club of America ; @NRC DX
Subject: Re: [NRC-AM] More D-Kaz
On 06/23/2014 08:31 PM, Mark Durenberger Mobile wrote:
It was an unusually quiet night last night and we opened the SDR on the
140-ft. D-Kaz antenna at Midnight, oriented NNW in GS EN25
With the great D-Kaz' Double-Delta oriented about 330 degrees at GS EN25,
these IDs are from an SDR recording, at 9PM and 10PM CDT---060714
Mark Durenberger
On the Road
(Locals, obvious signals and most U.S. Clears are omitted)
550KFYR Bismarck ND--300mi; 5 kw*
600KSJB
in Central Minn. are they heard? -
John
Sent from my iPad
On Jun 21, 2014, at 9:23 AM, Mark Durenberger Mobile
ma...@durenberger.com wrote:
With the great D-Kaz' Double-Delta oriented about 330 degrees at GS EN25,
these IDs are from an SDR recording, at 9PM and 10PM CDT---060714
Mark Durenberger
The results of several days' experimentations on the Double-Delta (D-Kaz)
antenna are now available at www.durenberger.com The hot button is in the
upper right of the welcome page.
This info will be updated as new info is developed.
I hope this may be of some use...we welcome feedback!
Jim: What you're describing is fairly common. The batteries, because of
their mass, move around a tiny bit and tend to eventually weaken the contact
pressure of the tabs in the battery compartment.
At the very least, look to see the tabs aren't corroded...and if you can
bend them slightly
I'm wrapping a 2,000-mile road trip and have occasionally stopped, to stick
up my 30-foot modified Dallas Lankford vertical. And something's been
bothering me.
Lankford's heritage 'short vertical' proposes a 4:1 base match. I've played
with this ratio, from 2- to 16- : 1 and, indeed, 4:1
We've tracked KCTE's actual sign-off (and the concurrent disappearance of
the Het)...I should have an SDR mega-file somewhere...
Mark Durenberger
On the Road
-Original Message-
From: Nigel Pimblett
Sent: Monday, February 24, 2014 12:44 AM
To: Mailing list for the International
No...that's referring to the Day Franklin.
The tower height is related to the frequency. To build a Franklin you'd
need twice the normal tower height, so a Franklin or Baby Franklin are
practical only at the higher frequencies where wavelengths are shorter.
(FYI: KSTP's nighttime array uses
Todd: Thank YOU! Hope things are going well for you...
Mark Durenberger
On the Road
-Original Message-
From: Forrest Skaine
Sent: Saturday, November 30, 2013 9:25 AM
To: IRCA Mailing list for the International Radio Club of America
Subject: Re: [IRCA] [NRC-AM] Double-Kaz antenna:
Great! I have a LOT of stuff and with wav chopper I can get them down to
TOH +/- 1 min.
Mark Durenberger
On the Road
-Original Message-
From: Guy Atkins
Sent: Tuesday, November 12, 2013 2:19 PM
To: Mailing list for the International Radio Club of America
Subject: Re: [IRCA]
Thanks Nick.
It's our weekend for the Mack CO DX-Pedition: Two Bevs at 60 and 95 degrees
and two Double-Kaz antennas looking Northwest and Southeast. In spite of
the A and K numbers I think now that we'll look North and Southwest with the
D-Kaz's.
With the Bevs we plan on tracking the
What's the consensus for the weekend? Good CX?
Mark Durenberger
On the Road
-Original Message-
From: Dennis Vroom
Sent: Friday, November 08, 2013 2:55 PM
To: irca@hard-core-dx.com
Subject: [IRCA] Daytime DX November 8, 2013
Afternoon DX:
640 KFILos Angeles, CA 1:22 PM PST
There's a lot of audio and video on record and available by request.
Meanwhile...here's the final report:
http://www.nrcdxas.org/convention/13nrccon/2013-Minnesota.htm
Mark Durenberger
On the Road
___
IRCA mailing list
IRCA@hard-core-dx.com
Here are a few candid shots; a complete report will follow.
Mark Durenberger
On the Road
http://www.durenberger.com/images/PHOTO1.jpg
http://www.durenberger.com/images/PHOTO2.jpg
http://www.durenberger.com/images/DXPEDITION.jpg
http://www.durenberger.com/images/BANQUET.jpg
It's a great site. John. I've been able to harvest a lot of material for my
new e-book Connecting The Continent---How ATT built the Radio Networks.
Mark Durenberger
On the Road
-Original Message-
From: John Callarman
Sent: Sunday, July 14, 2013 10:46 AM
To: IRCA
Subject: [IRCA]
John, another thing you bring to the table is PERSPECTIVE. You have a few
years on me but not so many that I don't appreciate what your Macro view can
mean. Appropriately, your last line says it all: Carry on, fellow DX'ers,
and keep the hobby going!
Lee Freshwater's desire to spend some
Correction...that discussion is FRIDAY night 8/2 :-))
Mark Durenberger
On the Road
-Original Message-
From: Mark Durenberger Mobile
Sent: Tuesday, July 02, 2013 7:20 AM
To: Mailing list for the International Radio Club of America ; DX @NRC ;
Putrich Greg ; Dabelstein Skip-home
I lit up a 50-foot vertical at 10 PM CDT last evening. QRN was
tolerable...the band seemed hot; I need to playback the Perseus recordings;
maybe I can find some of Kaz's post-sunset skip signals.
Mark Durenberger
On the Road
-Original Message-
From: todftscytj7707
Sent: Saturday,
-Original Message-
From: Mark Durenberger Mobile
Sent: Sunday, June 30, 2013 6:32 AM
To: todftscytj7707 ; Mailing list for the International Radio Club of
America
Subject: Re: [IRCA] [ABDX] RE: New AM stations heard this morning (geo-storm
logs from Michigan)
I lit up a 50-foot vertical at 10 PM
And I probably have the manual for it; I can copy if you need it.
Mark Durenberger
On the Road
-Original Message-
From: Nick Hall-Patch
Sent: Tuesday, June 11, 2013 1:42 AM
To: Mailing list for the International Radio Club of America
Subject: Re: [IRCA] FS: Kiwa Air Core MW Loop
I
Upon arrival in the Pawnee National Grasslands (NE Colorado) Monday, we laid
out 1100 feet of BOG; mostly East-West, on dry ground.
The wire did its predicted job of squelching stuff from the sides (for
example: flamethrower KOA was down in the mud to the point you could hear a
co-channel
after sunset and can
get to the point that it is unpleasant to DX.
73 KAZ
-Original Message-
From: Mark Durenberger Mobile ma...@durenberger.com
Sent: May 8, 2013 9:13 AM
To: DX-IRCA irca@hard-core-dx.com, DX @NRC a...@nrcdxas.org
Subject: [IRCA] Poor BOG reception
Upon arrival
Good gear!
http://www.foxcom.com/
Mark Durenberger
On the Road
-Original Message-
From: Craig Healy
Sent: Saturday, February 16, 2013 2:44 PM
To: Mailing list for the International Radio Club of America
Subject: [IRCA] RF Conversion
I am beginning to see if there are any adequate
When we built Target Field we found one that started at around 300 khz but I
don't recall who made it...I just know it was around $20K!
Mark Durenberger
On the Road
-Original Message-
From: Craig Healy
Sent: Saturday, February 16, 2013 3:47 PM
To: Mailing list for the International
On I-90 in Western South Dakota we had 5-by copy of i880 News from
Edmonton Alberta.
Mark Durenberger
On the Road
___
IRCA mailing list
IRCA@hard-core-dx.com
http://montreal.kotalampi.com/mailman/listinfo/irca
Opinions expressed in messages on
Hi Barry. Have you tried poking around the Westwood One web-pages?
Mark Durenberger
On the Road
-Original Message-
From: BARRY DAVIES
Sent: Monday, September 24, 2012 1:50 PM
To: IRCA SUBMISSIONS
Subject: [IRCA] Help with NBC News Radio affiliates
Hello IRCA'ers
Can any of you
News Radio affiliates
I poked on the Westwood One/Dial Global.Whoever they are this week... and
there was no affiliate list.. just technical details.
Paul
On Mon, Sep 24, 2012 at 5:13 PM, Mark Durenberger Mobile
ma...@durenberger.com wrote:
Hi Barry. Have you tried poking around
Hi Patrick. He probably meant the gear associated with DSL service...that
usually includes some form of router (aka Hash Generator)
Another fabulous noise-box is the set-top converter for digital TV!
Mark Durenberger
-Original Message-
From: Patrick Martin
Sent: Wednesday,
At my lake cabin I have an Apex (Best Buy) digital converter...getting
over-the-air TV from a rooftop antenna. Hash is generated that goes right
up the coax to the antenna (and radiates along the way).
I was able to eliminate it by building an RF Choke...winding 11 turns of
the coax through
The MW band is really hot tonight in Northern Minnesota!
Mark Durenberger
-Original Message-
From: Rick Dau
Sent: Sunday, September 11, 2011 8:49 PM
To: a...@yahoogroups.com ; Mailing list for the International Radio Club of
America ; a...@nrcdxas.org
Subject: [IRCA] The All-Night
I would second the Cat 5e approach. I've done a number of controlled tests
and it outperforms RG-58 hands down, MW thru 10 meters, for noise
performance and signal loss. With shorter runs (50 feet or so) I haven't
needed baluns.
Mark Durenberger
-Original Message-
From: Craig
Haven't tried that, Craig. BTW for do-it-yourself Balun arrays if you're
not into winding them, look at the many many options available at
www.minicircuits.com. Very inexpensive too.
-Original Message-
From: Craig Healy
Sent: Thursday, July 28, 2011 12:48 PM
To: Mailing list for
and where is a link to how to make one. I need something better than these
trashy Radio Shack 50 ft cables that get damaged passing under my car door
and probably are full of common-mode snake currents.
73 and thx .. KAZ
-Original Message-
From: Mark Durenberger Mobile ma...@durenberger.com
I'm 30 miles NW of their towers. Daytime pretty fair; can't hear them at
night.
Mark Durenberger
-Original Message-
From: Earl Higgins
Sent: Monday, June 27, 2011 8:57 AM
To: a...@nrcdxas.org ; Mailing list for the International Radio Club of
America ; Rick Dau
Subject: Re: [IRCA]
Still trying to find a way to get to the show; schedule conflicts :-((
Mark Durenberger
DX Audio Service
--
From: Mike Sanburn mikesanb...@hotmail.com
Sent: Wednesday, June 08, 2011 4:02 PM
To: irca@hard-core-dx.com
Subject: Re: [IRCA] Convention
Hi Patrick. An interesting addition would be to place a 500-ohm
potentiometer in series with each antenna. You could play with antenna
interaction; even nulling. I hesitate to say phasing because you're
really dealing only with resistance, not the overall reactance a phasor
would handle.
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