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[IRCA] Mostly Mexican [sic] MW DX to Enid OK, February 3-9, 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/page66
[over 281,000 views! as of February 2, 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 [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) 
         [-799.999] 2017-12-30 
799.9985 MEX XEROK-AM Radio CaÃÃn (Ciudad JuÃrez) [799.9985-800.0002]      
         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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