BC-DX TopNews WWDXC #945 BC-DX 945
BC-DX TopNews WWDXC #945 BC-DX 945 BC-DX TopNews WWDXC #945 BC-DX 945
measurements of summer mesopause echoes at SURA. Page(s) 935-941. SURA radar for atmospheric studies. Observations of mesospheric echoes were carried out at the SURA facility of Radiophysical Research Institute (NIRFI, Nizhny Novgorod, Russia). It is situated a few kilometers from the small town of Vasil'sursk about 140 km eastward of N. Novgorod (geographical coordinates 56.13 N, 46.10 E). The Mesospheric radar was created at SURA using the heating facility antenna array designed for artificial modification of the ionosphere by powerful HF radiation. This antenna array consists of 12 x 12 crossed dipoles divided into three identical sub-arrays in the magnetic north+south direc-tion (about 9degr to the east from the geographical north) and can be operated in the frequency range of 4.5+ 9 MHz with both left and right circular polarizations. It is steerable in the north+south direction up to 40degr from the vertical (Belov et al., 1983). The main parameters ofthe antenna array are shown in Table 1. Each antenna sub-array is fully independent, and one of the sub-arrays is used as a transmitting antenna, while another is used as a receiving antenna. This same radar was used for magnetospheric sounding (Gurevich et al., 1992) with one of the main heating transmitters. These broadcast transmitters were designed for continuous operation and were not very suitable for our mesosphere investigations, due mainly to high electricity costs and limited pulse characteristics. Therefore another transmitter was connected to one of the antenna sub-arrays for mesosphere sounding, namely a pulsed transmitter with about 50-kW peak power. The transmitter parameters are shown in Table 2. The radar receiver is a modified professional receiver with a wide filter bandwidth to operate with short pulses and with a quadrature detector that provides phase measurements. The facility at Vasil'sursk. The laboratory was founded in 1965 in Vasil'sursk located at latitude 56 07 N, longitude 46 00 E, about 140 km East from Nizhny Novgorod. The low frequency facility has an antenna array, comprising three sections. Figure 1 shows the system of 12 by 12 crossed dipole elements, which covers an area of 300 by 300 metres. Each of the three sections has an set of 4 by 12 elements; each section can be pointed independently. The beams may be steered manually or electrically, in steps of three degrees, to point at angles between 12 and 85 degrees. Each section has a 300-metre aperture, and its radiation pattern approximates to a sin(x)/x shape. Radiated signals are circularly polarised. Figure 1. The transmitting antenna system at Vasil'sursk. A separate 250 kW transmitter is connected to each of the three antenna sections. Transmitter frequencies are stable to one part in 10(exp 7). Amplitude or phase modulation (or both together) are available, and external synchronisation is possible. Emissions may be a continuous carrier or a pulsed emission whose shortest pulse is 50 milliseconds. The file:///Z|/DOKUMENTATION-BULLETINS/WWDXD-BCDX/2010/bcdx984.txt[11.06.2012 10:40:24]
operating frequency range is 4.6 - 9.3 MHz. Table 1 and Table 2 give the parameters of one antenna section whose beam points to a zenith angle of 34 degrees (the Sun position in July) and transmitting 250 kW. Table 1 Frequency Half-power beam Time for Sun width (calculated) within the beam --------- ------------------ --------------- 9.05 MHz 6.3 by 22.8 deg. 18.5 minutes 9.31 MHz 6.1 by 22.1 deg. 18.0 minutes Table 2 Frequency Measured-Gain Eff. area Eff. radiated (using Moon) power ---------- ------------ --------- ------------- 9.05 MHz 77 (+10%) 6700 sq m 19.2 MW (+1dB) 9.31 MHz 77 (+10%) 6400 sq m 19.2 MW (+1dB) (wb, wwdxc BC-DX TopNews Oct 14) SINGAPORE/THAILAND/U.K. Frequency changes of BBC: 0300-0400 NF 5790 SKN 300 kW 110 deg to N/ME, ex 11820 in Arabic 0400-0500 NF 5790 SKN 300 kW 140 deg to NoAf, ex 9915 in Arabic 0600-0700 NF 9410 SKN 300 kW 180 deg to NEAf, ex 15105 in English 1500-1600 NF 11745 SNG 250 kW 315 deg to SoAs, ex 11740 in Urdu Additional txion of BBC in Burmese from Oct. 4: 0200-0230 on 7380 NAK 250 kW 325 deg 9480 NAK 250 kW 355 deg 11995 SNG 250 kW 340 deg (R BULGARIA DX MIX News, Ivo Ivanov, via wwdxc BC-DX TopNews Oct 13) 11975 Croatian Radio in Croatian via Kranji-SNG to AUS, NZl, PAC at 08-12 UT. S=3 tiny poor in EUR, at 0840 UT Oct 16. // 7320 kHz Zagreb Deanovec, both signals nearly audio synchron. (wb, wwdxc BC-DX TopNews Oct 16) SLOVAK REP 9515 IRRS-Shortwave of Nexus-IBA Milan organization noted Oct 16 at 0828 UT, some religious? pop music? Older English announcer. S=9+30dB powerful signal. The Nexus-IBA website is terrible puzzling, no pop mx content visible at (wb, wwdxc BC-DX TopNews Oct 16) SOLOMON ISLS 5020 SIBC at 1158 UT in usual sign-off routine, man in English with devotional, woman with ID and announcements and anthem at 1202 UT. Poor. (Harold Sellers-BC-CAN, DXplorer Oct 14) SPAIN 1341 Onda Cero Radio Almeria QSL. Nach 18 Tagen kamen Brief, eine CD, diverse Aufkleber, sowie ein Prospekt ueber Almeria fuer einen RR ueber das von 0655-0700 Ortszeit ausgestrahlte Lokalprogramm. Empfang hier in Genf ist nicht ganz einfach, da auf 1341 meist die Frequenzgenossen Magyar Katolikus Radio, Onda Cero Radio Ciudad Real und SER Leon dominieren. Adresse: Onda Cero Radio file:///Z|/DOKUMENTATION-BULLETINS/WWDXD-BCDX/2010/bcdx984.txt[11.06.2012 10:40:24]
- Page 1169 and 1170: 1345-1500 15265 ISS 250 kW 083 deg
- Page 1171 and 1172: (Mike Barraclough-UK, dxld Oct 7) B
- Page 1173 and 1174: few sunspots) and much noise in urb
- Page 1175 and 1176: CHN Qiqihar SW jamming site, at 47
- Page 1177 and 1178: (Funkwerk Koepenick-GDR, 1964y) in
- Page 1179 and 1180: It is NOT required to send any retu
- Page 1181 and 1182: Rhein-Main Radio Club via Sitkunai
- Page 1183 and 1184: MNG Choybalsan MW 1350 kHz non-dir
- Page 1185 and 1186: Glenn, The Radio Nigeria Abuja Nati
- Page 1187 and 1188: to prayer, 1159 closedown announcem
- Page 1189 and 1190: on the air. Please get in touch wit
- Page 1191 and 1192: postage?? But nice of him to delive
- Page 1193 and 1194: 2. Secondly I would like to mention
- Page 1195 and 1196: So at 0900 we met at the reception
- Page 1197 and 1198: 7465 2001-2030 100 310 .234567 FREN
- Page 1199 and 1200: 1500-1600 NF 15555 WER 250 kW 075 d
- Page 1201 and 1202: for starters. This is the only Braz
- Page 1203 and 1204: 1098 A strong signal in Tibetan on
- Page 1205 and 1206: FAROE ISLANDS 531 KFU, Akraberg, is
- Page 1207 and 1208: Good afternoon Mauno et al: For ove
- Page 1209 and 1210: 0815 ENGLISH PROGRAM - Music and Sp
- Page 1211 and 1212: "Our counterfeit of the 'Radio of t
- Page 1213 and 1214: Oct 11. (wb, wwdxc BC-DX TopNews Oc
- Page 1215 and 1216: Heute sendet TWR aus Monte Carlo in
- Page 1217 and 1218: listen WeAF stations, due of the lo
- Page 1219: kilometers from the small town of V
- Page 1223 and 1224: 0130 UTC and then tuned to 873 kHz.
- Page 1225 and 1226: Hi, Yes I can answer that question.
- Page 1227 and 1228: #*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#
- Page 1229 and 1230: BC-DX 985 18 Oct 2010 _____________
- Page 1231 and 1232: 1400-1415 00095 SOFIA 001 0ND 1500-
- Page 1233 and 1234: 1700-1759 15275 WOOFFERTON 250 182
- Page 1235 and 1236: 1400-1429 01548 TRINCOMALE 400 035
- Page 1237 and 1238: 1530-1545 00097 SKOPJE MRT 010 0ND
- Page 1239 and 1240: 0100-0200 00693 MOSKVA 010 0ND Mosc
- Page 1241 and 1242: 0300-0400 05925 KIGALI 250 180 Ce&S
- Page 1243 and 1244: 1260 1400 2100 .mtwtf. BBC St Peter
- Page 1245 and 1246: 6005 1800 1830 smtwtfs BBC Seychell
- Page 1247 and 1248: 7400 0230 0330 smtwtfs BBC Skelton
- Page 1249 and 1250: 9915 1600 1700 smtwtfs BBC Moosbrun
- Page 1251 and 1252: 13820 1030 1130 smtwtfs BBC A'Seela
- Page 1253 and 1254: 6030 2000 2030 .mtwtf. DWL Rampisha
- Page 1255 and 1256: 9575 1700 1900 smtwtfs NHK Dhabayya
- Page 1257 and 1258: 11615 2000 2100 smtwtfs YFR Ascensi
- Page 1259 and 1260: is a political station, not religio
- Page 1261 and 1262: 1300-1330 & 1400-1430 9875 Bengali
- Page 1263 and 1264: NHK B-10 season sked available on t
- Page 1265 and 1266: 7215 0030-0130 WER 250 90 40E,41NW
- Page 1267 and 1268: 3975 1800-2000 WER 250 ND 28 123456
- Page 1269 and 1270: WER 0700 0800 Arabic Morocco,Algeri
operating frequency range is 4.6 - 9.3 MHz. Table 1 and Table 2 give the<br />
parameters of one antenna section whose beam points to a zenith angle of<br />
34 degrees (the Sun position in July) and transmitting 250 kW.<br />
Table 1<br />
Frequency Half-power beam Time for Sun<br />
width (calculated) within the beam<br />
--------- ------------------ ---------------<br />
9.05 MHz 6.3 by 22.8 deg. 18.5 minutes<br />
9.31 MHz 6.1 by 22.1 deg. 18.0 minutes<br />
Table 2<br />
Frequency Measured-Gain Eff. area Eff. radiated<br />
(using Moon) power<br />
---------- ------------ --------- -------------<br />
9.05 MHz 77 (+10%) 6700 sq m 19.2 MW (+1dB)<br />
9.31 MHz 77 (+10%) 6400 sq m 19.2 MW (+1dB)<br />
(wb, wwdxc <strong>BC</strong>-<strong>DX</strong> <strong>TopNews</strong> Oct 14)<br />
SINGAPORE/THAILAND/U.K. Frequency changes of B<strong>BC</strong>:<br />
0300-0400 NF 5790 SKN 300 kW 110 deg to N/ME, ex 11820 in Arabic<br />
0400-0500 NF 5790 SKN 300 kW 140 deg to NoAf, ex 9915 in Arabic<br />
0600-0700 NF 9410 SKN 300 kW 180 deg to NEAf, ex 15105 in English<br />
1500-1600 NF 11745 SNG 250 kW 315 deg to SoAs, ex 11740 in Urdu<br />
Additional txion of B<strong>BC</strong> in Burmese from Oct. 4:<br />
0200-0230 on 7380 NAK 250 kW 325 deg<br />
9480 NAK 250 kW 355 deg<br />
11995 SNG 250 kW 340 deg<br />
(R BULGARIA <strong>DX</strong> MIX News, Ivo Ivanov, via wwdxc <strong>BC</strong>-<strong>DX</strong> <strong>TopNews</strong> Oct 13)<br />
11975 Croatian Radio in Croatian via Kranji-SNG to AUS, NZl, PAC at 08-12<br />
UT. S=3 tiny poor in EUR, at 0840 UT Oct 16. // 7320 kHz Zagreb Deanovec,<br />
both signals nearly audio synchron.<br />
(wb, wwdxc <strong>BC</strong>-<strong>DX</strong> <strong>TopNews</strong> Oct 16)<br />
SLOVAK REP 9515 IRRS-Shortwave of Nexus-IBA Milan organization noted<br />
Oct 16 at 0828 UT, some religious? pop music? Older English announcer.<br />
S=9+30dB powerful signal. The Nexus-IBA website is terrible puzzling, no<br />
pop mx content visible at<br />
<br />
(wb, wwdxc <strong>BC</strong>-<strong>DX</strong> <strong>TopNews</strong> Oct 16)<br />
SOLOMON ISLS 5020 SI<strong>BC</strong> at 1158 UT in usual sign-off routine, man in<br />
English with devotional, woman with ID and announcements and anthem at<br />
1202 UT. Poor.<br />
(Harold Sellers-<strong>BC</strong>-CAN, <strong>DX</strong>plorer Oct 14)<br />
SPAIN 1341 Onda Cero Radio Almeria QSL.<br />
Nach 18 Tagen kamen Brief, eine CD, diverse Aufkleber, sowie ein Prospekt<br />
ueber Almeria fuer einen RR ueber das von 0655-0700 Ortszeit ausgestrahlte<br />
Lokalprogramm. Empfang hier in Genf ist nicht ganz einfach, da auf 1341<br />
meist die Frequenzgenossen Magyar Katolikus Radio, Onda Cero Radio Ciudad<br />
Real und SER Leon dominieren.<br />
Adresse:<br />
Onda Cero Radio<br />
file:///Z|/DOKUMENTATION-BULLETINS/WW<strong>DX</strong>D-<strong>BC</strong><strong>DX</strong>/2010/bcdx984.txt[11.06.2012 10:40:24]