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[IRCA] Mostly Mexican MW DX to Enid OK, February 10-16, 2018

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 These logs are excerpts from my daily
 all-band reports, mainly SWBC, also VHF/UHF,
 sometimesÂutility, ham, which may be found in several
 archives without much delay, such as
 http://www.hard-core-dx.com/index.php?topic=Hauser
 
 And compiled weekly along with
 extensive news from many other individuals and publications
 in DX LISTENING DIGEST:
 http://www.worldofradio.com/dxldmid.html
 
 All my MW DX reports starting August
 2011 are archived in this forum with open access:
 http://forums.wtfda.org/showthread.php?6543-MW-DX-from-Enid-OK-by-Glenn-Hauser/page67
 [over 282,000 views! as of February 16, 2018]
 
 All times and dates strictly UT. Rx:
 mostly DX-398 with internal antenna only or PL-880; NRD-545
 with ALA-330S inside E-W or inside randomwire N-S; Nissan
 stock caradio as specified; ICR-75Â E-W longwire.
 
** BONAIRE. No new log from me of TWR 800, but there is a lot of discussion of the augmented 440 kW service and its antenna patterns in the next DX Listening Digest:
http://www.w4uvh.net/dxld1807.txt
(Glenn Hauser, 

****************************

 ** BONAIRE [and non]. 800, Feb 3 at
 0126 UT, nulling KQCV OKC from the SSE, I would normally
 hear CKLW, but even at that angle, Spanish is atop it,
 mentions La Habana and dios, so likely PJB. XEROK originally
 would be dominant, but has receded into QRP and hardly hear
 it any more --- maybe around sunrise. SAH of about 40/minute
 = 0.67 Hz, not clear between which two of the three or four.
 MW Offset list shows:
 
 http://www.mwlist.org/mwoffset.php?khz=800
 799.9983 BES PJB Shine 800 AM (Trans
 World Radio) (Kralendijk) 
 Â Â Â Â  [-799.999]
 2017-12-30 
 799.9985 MEX XEROK-AM Radio CaÃÃn
 (Ciudad JuÃrez) [799.9985-800.0002]Â Â Â 
 Â Â Â Â  2017-09-12
 
 799.9999 USA KQCV (Oklahoma City, OK)
 2018-01-23 
 800.0015 CAN CKLW (Windsor, ON)
 [799.998-] 2014-01-03 
 
 Plenty of other LA stations now must
 cope with the superpower Bonairean: WRTH shows 7 other
 Mexicans on 800; also one each: Costa Rica, Dominican
 Republic, Honduras (2), Nicaragua, PanamÃ, El Salvador.
 There are also Colombians, Ecuadorians, deeper South
 Americans, but no Venezuelans (Glenn Hauser, OK, WORLD OF
 RADIO 1916, DX LISTENING DIGEST)
 
 Checked 3 SDR remotes in central
 Florida, Detroit Michigan and Rochester NY in 04-05 UT slot
 on Febr 3.
 799.916 poor and tiny
 799.972
 799.9965
 799.998
 799.9995 strongest in Florida noted as
 Spanish language at 0410 UT
 800.002, which is an Ontarion CAN one,
 many mentions on Ontario matter, strongest in Detroit
 S=9+50dB CKLW ?
 800.008
 800.0145
 73 wb df5sx (Wolfgang BÃschel, DX
 LISTENING DIGEST)
 
 Wolfi, Glenn, I see some carping in the
 latest WWDXC regarding the recently implemented new antenna
 and transmit power of TWR Bonaire.
 
 I have attached the internationally
 notified information regarding the Bonaire 800 kHz
 operation, which predates the RJ-81 Agreement. This
 datasheet is from the ITU RJ-81 database as of half an hour
 ago.
 [unfortunately, the pdf will not copy
 accurately --- gh]
 
 The antenna description is actually a
 bit confusing, but the originally notified antenna was a
 single driven element with 3 different parasitic elements
 which could be configured for radiation maxima in several
 directions, depending upon intended audience. The
 antenna was designed by the late Carl Smith (probably with
 some help from his brother-in-law, Dan Hutton). As you can
 see from the "augmented" data, the maxima are substantially
 greater than the omnidirectional radiation from a single
 tower would be. At 325 degrees true, for example, the 14680
 mV/m/km value is almost twice the listed omni value, or
 equivalent to nearly 2 MW.
 
 What this means internationally is that
 some stations which have not experienced relatively high
 levels of co-channel interference in the past have just been
 the beneficiaries of chance. And TWR is on RJ-81 list B
 which means that US stations do not include it in their
 computations of nighttime interfering signal. Ben
 -- 
 (Benj. F. Dawson III, P.E.
 Hatfield & Dawson Consulting
 Engineers, LLC
 9500 Greenwood Avenue North
 Seattle, WA 98103 USA
 206 783 9151
 206 789 9834 Facsimile
 dawson@xxxxxxxxxx
 UT Feb 4, WORLD OF RADIO 1916, DX
 LISTENING DIGEST)
 
 TWR says, ``Not optimized for coverage
 into USA``. But if they are aiming all that power at Habana,
 what`s to keep it from further bounces into North America?
 Vertical angle of radiation? How would they change if it
 they were trying to reach western USA? (Glenn to Ben Dawson,
 via DXLD)
 
 Glenn, Of course a pattern with its
 maximum directed toward Havana from Bonaire (not far from
 the ITU notified 325 degree "augmentation") will have signal
 into the US. But I have no idea of the radiation pattern of
 the present antennas. The present tower arrangement is a 4
 tower parallelogram, so (unlike an in-line array) there's no
 way to determine the direction of the maxima for sure
 without more numerical data. From the orientation (from
 Google Earth) it looks like it's a wide-by-narrow
 configuration, which could be used to produce a maximum at
 about 315 degrees true, at right angles to the wide-spaced
 pairs of towers, pretty much right toward Cuba. And such a
 pattern could be perfectly consistent with the ITU
 notification.
 
 The ITU data is so unusual for this old
 notified pattern, a single tower radiator and 3
 augmentations, that none of our programs will plot it up
 correctly, or I'd send you a graph. But based on the
 geometry of the towers on the Google Earth map, it appears
 that there is a reasonable chance that the present operation
 that is (inelegantly) described in the e-mail is consistent
 with the old ITU notified pattern. The FCC CDBS database
 does not include the augmentations, by the way.
 
 And the other thing to remember is that
 if XEROK were really using their authorized 150 kW, they
 would tear up signal in the USA SE from Bonaire. And of
 course limit the daylights out of night coverage by US
 stations all by themselves.
 
 So as I have noted, stations that have
 enjoyed significant nighttime
 service on 800 kHz in a lot of the US
 have just been living on the
 vagaries of fate, and have no real
 basis for complaint (ben to Glenn, ibid.)
 
 UNIDENTIFIED. Trans-Atlantic JBA MW
 carrier search, Feb 3 at 0121 on the JRC: only 684, 612.
 Tuning on up with nothing, I quit at 1215 kHz.
 
 TA JBA MW carrier search, Feb 3 at
 0650-0701 on the Icom: 603, 612, 639, 693, 729, 756, 774*,
 837, 855, 873, 882*, 909, 954, 999, 1008, 1035, 1044*,
 1053*, 1089, 1098, 1116, 1125, 1152, 1161, 1197, 1215*,
 1296, 1305, 1521. *the stronger ones but still no audio
 (Glenn Hauser, OK, DX LISTENING DIGEST)
 
 UNIDENTIFIED. Trans-Atlantic JBA MW
 carrier search, Feb 5 at 0624-0633 on the R75: 693*, 774,
 873, 882*, 909, 1017, 1044*, 1089, 1116, 1125, 1152, 1197,
 1215*. *being the stronger ones but still not enough for
 audio. I do this only when convenient at bedtime, but some
 suggest there may be sunrise enhancement in Europe (Glenn
 Hauser, OK, WORLD OF RADIO 1916, DX LISTENING DIGEST)
 
 UNIDENTIFIED. Trans-Atlantic JBA MW
 carrier search turns up lots of them, Feb 7 at 0657-0706:
 531, 558, 585, 603, 621, 639, 666, 684, 693, 729(2), 774,
 783(2), 801, 855*, 882, 909*, 936, 1017, 1044, 1053, 1089,
 1098, 1116, 1125, 1152, 1188, 1197, 1215*, 1296, 1305(2),
 1368, 1458, 1485, 1539, 1575(2). *stronger ones but not
 enough for audio on any of them (Glenn Hauser, OK, DX
 LISTENING DIGEST)
 
 UNIDENTIFIED. Trans-Atlantic JBA MW
 carrier search. Lots of reports from even the west coast of
 carriers earlier this evening, UT Feb 8, so I make an effort
 to do my bandscan an hour earlier than I usually do; on the
 R75 with E-W longwire.
 
 First in USB mode, 9 kHz steps, 1 kHz
 below the Eurafrican frequencies to hear the 1 kHz het they
 produce, Feb 8 at 0552-0600: 531, 558(2), 585, 603, 612,
 621*, 639, 666, 684 (vs IBOC), 693(2), 711, 729(2), 747,
 774*, 837, 855, 873, 882, 909, 836, 972, 999, 1008, 1017,
 1026, 1044*, 1053, 1089, 1098, 1152, 1179, 1197, 1215*,
 1296, 1341, 1413, 1521, 1539, 1575, 1584. *the stronger ones
 but still no audio
 
 Then I do it again in LSB mode,
 stepping 1 kHz above the carrier frequencies, Feb 8 at
 0606-0610: 531, 549, 567, 612, 621, 639, 666, 684, 693, 711,
 747, 774, 801, 846?, 855, 882, 936, 954, 1044, 1053, 1089,
 1098, 1116, 1125, 1152, 1215, 1305, 1503, 1521, 1575, 1584,
 1602.
 
 Looking at others` reports, I think
 that a lot of these are coming from the UK or Spain, on the
 frequencies they occupy. I am being especially observant for
 the known off-frequency stations circa 595, 711, 917, 1053,
 but no luck yet (except for 711+ Western Sahara recently).
 (Local spur circa 595 from KZLS-1640 I had such fun tracking
 down a couple years ago is not heard lately even in daytime,
 just rechecked Feb 8 at 1659 UT.) (Glenn Hauser, OK, DX
 LISTENING DIGEST)
 
 UNIDENTIFIED. Trans-Atlantic JBA MW
 carrier search continues to be very productive except for
 being too weak for any audio: Feb 9 at 0659-, USB tuning 1
 kHz below, R75 preamps off:
 
 531, 558, 585, 603, 612*, 621, 684,
 693*, 738, 774 (vs IBOC noise from what? Not WBBM, something
 from 760?), 783, 801, 846, 855, 882, 909*, 936, 954, 999,
 1008, 1035, 1044, 1053, 1089, 1098, 1125, 1152, 1188, 1197,
 1215*, 1224(2), 1296, 1306, 1314(2), 1341, 1413(2), 1485(2),
 1503, 1521, 1539, 1575, 1602.
 
 * = stronger ones. (2) means I can hear
 an unsteady het indicating more than one carrier beating on
 slightly different frequencies. Additional channels missing
 could well be due to temporary fades as I go by (Glenn
 Hauser, OK, DX LISTENING DIGEST)

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