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Assunto: Monitoring from LA  View Printable Version 
Sunday, August 13 2023

This log was with a wrong in the link, right is as follows  
4940kHz, 4940, Colombia/ Venezuela; 13/08/2023, 0917 – 0922 religious music selections. Poor, fady, S/N R=12dB (LOB-B).
73 Lucio 
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Em dom, 13 13e ago 13e 2023 às 17:45, Lúcio Bobrowiec via Hard-Core-DX<hard-core-dx@hard-core-dx.com> escreveu: 17735kHz Yoruba Nation Shortwave Radio via Woofferton, UK; 12/08/2023, 1948 – 1959 male talks maybe in Yoruba language “Yoruba” (but with some English words “Prime Minister”), probably to an audience. Good, without spurious QRM wich was at 1900; 1959 sign off,  S/N R = 19dB (LOB-B).

4940kHz, 4940, Colombia/ Venezuela; 13/08/2023, 0917 – 0922 religious music selections. Poor, fady, S/N R=12dB (LOB-B).

5910kHz, Alcaraván Radio, Colombia, Puerto Lleras; 13/08/2023, 0922 –0928 male in spanish talks, 0927 music. Very poor, fady, unreadable, S/N R=5dB (LOB-B).

5952kHz, R. Pio XII, Bolivia, 12/08/2023 check at 2252 that usual het (weak) but at 2320 was off (LOB-B).
 PL Tecsun 310et 
Wire 14m,  dipole 18m 
Embu SP Brasil

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S strength and SNR in some Tecsun RX  View Printable Version 
Sunday, August 13 2023



 On the display of these radios, in the upper right corner, 2 magnitudes related to the received signal are indicated: signal strength on the left and signal/noise ratio on the right (as shown in the image). 

1.Signal strength indicator – Related to the old S-meter, in Tecsun the unit of measurement is the dBµ (as it is on the display for short), or more correctly dBµV (dB = decibel, a way of expressing magnitudes of value as the voltage logarithmically; µV = microvolts) ). On those radios that use DSP technology, this indicator is also called RSSI. In the images is the table of readings made by the DSP SiLabs chip used in Tecsun in dBµ, and its relationship with the “S” unit. The columns in dBm and µV are also presented. 
Let's see this in practice on my 310et: I tune to R. Alcaraván at 5910kHz and (on average) the indicator in dBµ shows 28; checking this quantity in the table, it corresponds to S8. The reception is very poor and I would gladly give an S3. There is a good discrepancy, that is, the table does not match. But in this case we could give a discount and establish a different table, with the reality of our subjective values ​​of the “S” scale. So I tested it at 5055kHz, there was no station and the indicator showed 22dBµ = S7; it seems that this radio takes these readings without distinguishing the modulated signal from what is just noise. In that case an S1 would be the maximum tolerated. So I considered this Tecsun signal strength indicator a goner.

 2. Signal/noise indicator – In Tecsun the measurement unit is in dB (decibel) and in the images, there is a drawing that illustrates this quantity well; is the ratio between the desired signal and background noise S/N = signal to noise ratio or SNR (S=signal, N=noise, ratio=ratio, proportion). According to some texts, 15 – 25dB would be considered a minimum range of magnitude to establish connectivity but in Tecsun, observing in practice, the total range of magnitude in AM is 0 – 25dB. On FM this range can be overridden. The SNR is an interesting signal analysis unit of measure because in practice, we can establish the level of intelligibility, or the ability to copy a content in the signal, using a better term related to radio. In practice (on my 310et), this measurement is very consistent with what happened: noisy signals have low dB and vice versa. I listened on 08/13 at 0917ut, R. 4940 at 4940kHz with S/R = 12dB regular and noisy signal; on the same day at 0922utc to R. Alcaraván 5910kHz with S/R = 5dB weak signal and also noisy.

 Probably this Tecsun measurement of S/N indirectly establishes the magnitude of signal strength as well, because if the signal is noisier it is generally weaker. 

This text has as its main source the page: https://radio-timetraveller.blogspot.com/2015/01/the-ultralight-db-mystery-s-meters-and.html?m=1

In this research, I saw a video in which it is stated that these Tecsun measurements are negligible; I agree with the one related to Signal Strength but not with the SNR measurement.

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Stations heard in Reinante and Friol, NW of Spain  View Printable Version 
Sunday, August 13 2023


Manuel Méndez
Lugo, Spain

Log in Reinante and Friol, NW of Spain
Sangean ATS 909X, Tecsun PL-880, cable antenna, 8 meters

ALASKA, 11875, KNLS, Anchor Point, 0805-0834, 13-08, Chinese, comments.

ANTARCTICA, 15476, LRA 36, Radio Nacional Arcángel San Gabriel, Base
Esperanza, 1746-1953, 12-08, songs in Spanish, at 1758 Morse code,
Spanish, “A partir de este momento transmite LRA 36, Radio Nacional
Arcángel San Gabriel en español, onda corta 15476 kHz desde Base
Esperanza, Antártida Argentina…”, comments about very low temperatures
in Antarctica in the past, “Una nueva emisión de Uniendo Voces”, “Juan
Benavente”, male, female, “Uniendo voces, ciclo especial de onda corta e
internet desde la Antártida para el mundo, coordinación general Adrián
Korol y Juan Benavente, nuestra red social Facebook …, correo
electrónico, lra36nacional@gmail.com”, at 1940 comments about Radio Ham.
At about 1953 signal cut off, but checked again at 2028 on air again
with good and clear signal. 25422, at times 35433.

AUSTRALIA, 15460, Reach Beyond Austria, Kununurra, 1345-1400*, 13-08,
program in slow English, id. “Thank you for tuning Reach Beyond
Australia...”, interval signal and close. 45444.

BOLIVIA, 3310, Radio Mosoj Chaski, Cotapachi, 2339-2346, 07-08, Quechua,
comments. 15421.

Also heard 0016-0023, 09-08, Quechua, comments. 15421.

4885, Radio Clube do Pará, Belém, 0510-0529, 08-08, relaying Radio
Bandeirantes news. 35433.

4985, Radio Brasil Central, Goiania, 0439-0556, 13-08, Brazilian songs.
Teletype QRM. 13321.

6180, Radio Nacional da Amazonia, Braslia, 2050-2108, 12-08, Brazilian
songs, Portuguese, comments. // 11780. 25422.

11815, Radio Brasil Central, Goiania, 0620-0646, 10-08, Brazilian songs,
at 0631 id. “6 e 30”, “Radio Brasil Central”, program “Madrugada
Musical”. Slightly distorted signal 35433.

15190.1, Radio Inconfidencia, Belo Horizonte, 1958-2018, 12-08,
Portuguese, comments, id. “Rede Inconfidencia de Radio…” Brazilian
songs. 15421.

CANADA, 6070, CFRX, Toronto, 0509-0532, 08-08, English, news, comments,
advertisements, mentioned “Ontario”, “Canada”. Clear signal today due to
Channel 292 is out of air at this time. 25432.

COLOMBIA, 5910, Alcaraván Radio, Puerto Lleras, 0512-0534, 08-08,
religious comments, Colombian and religious songs. 25432.
Also heard 0502-0548, 12-08, religius songs, Spanish, Colombian songs,
“Llaneras”. 25422.

5930, World Music Radio, Bramming, 1941-2005, 12-08, Brazilian songs,
songs in English. 25432.

5970, Radio 208, Hvidovre, 1938-1955, 12-08, rock and pop songs, id.
“Radio 208”. 25432.

15700, World Music Radio, Randers, 1028-1050, 11-08, songs in English,
id. “World Music Radio, WMR”, Latin American songs, Cuban song “Y en eso
llegó Fidel” by Carlos Puebla. 35433.

ECUADOR, 6050, HCJB, Pichincha, 0436-0500*, 13-08, Spanish, Ecuadorian
songs, comments about music and culture of Ecuador, flute music, program
“Ritmos y Canciones de Nuestra Tierra”, “HCJB”, anthen and close. 25422.

6030, Radio Oromiya, Addis Ababa, 1806-1825, 12-08, East African songs,
Vernacular, comments. 25322.

7110, Radio Ethiopia, Addis Ababa, 0426-0437, 13-08, Vernacular,
comments. 25222.

GERMANY, 6160, Shortwave Radio de., Winsen, 2014-2023, 12-08, English
program “Amateur Radio”, news and comments about Ham Radio. 35433.

MALI, 5995, Radio Mali, Bamako, *0556-0517, 10-08, African songs, at
0600 “Au Chant du Coq du Radio Mali”, “La matinale de la Radio
Nationale”, “Bonjour”, French, news, comments, African songs,
Vernacular, comments. 35433.
Also heard 1851-1903, 12-08, Saturday English program “English
Magazine”, news and comments about Mali. 35433.

MEXICO, 6185, Radio Educación, Ciudad de México, 0555-0623, 10-08,
Spanish, comments, Latin American songs, id. “Radio Educación”,
classical music. 25422.
Also heard 0516-0633, 13-08, Spanish, comments about the political
situation in Niger, program “Datos y Hechos”, “información fiable y
confiable”, “Una producción de Radio Educación”, at 0527 id. “Cultura
México Señal Internacional, la onda corta de Radio Educación”, Mexican
songs. 34433.

MONGOLIA, 12085, Voice of Mongolia, Ulaanbaatar (presumed), 0902-0921,
13-08, female, unreadable comments, songs. Extremely weak, audible at
times. 15411.

5955, Sunlite Radio, Westdorpe, 0458-0518, 13-08, Dutch, comments, id.
“Sunlite, Sunlite”, songs in English. 24422.

6060, Radio Delta International, Elburg, 1822-1855, 12-08, songs in
English, id. “Radio Delta International”, “radiodelta.am”, comments in
English. 35433.

12075, Radio Delta International, Elburg, 0614-0810, 13-08, songs in
English, id. "Radio Delta International", comments in English, id.
“radiodelta.am”, more id. “Radio Delta International on 12075 kHz”,
songs, “Finnish Requests” program. 35433.

NORWAY, 5895, Radio Northern Star, Bergen (presumed), 2034-2052, 12-08,
songs in English. Very weak. 15421.

PERU, 4775, Radio Tarma, Tarma, 2340-2347, 07-08, Spanish, commercial
advertisements “El próximo 24 de agosto, en Tarma...”, id. “Radio
Tarma”, comments. Good and clear signal. 35433.

Also heard 0015-0022, 09-08, Spanish, comments. 25422.

TAJIKISTAN, 7245, Voice of Tajik, Dushanbe, 1718-1732, 12-08, Persian
songs and comments. 25322.

TIBET, 7385, PSB Xizang, Lhasa, 1630-1659, 12-08, Tibetan songs,
English, comments, program “Holy Tibet”. 25432.

VANUATU, 7260, Radio Vanuatu, Port Vila, 0518-0529, 09-08, comments,
Island songs. 15421.
Also heard 0550-0650, 13-08, female, comments, Island songs, male,
comments. 15421.

VENEZUELA or COLOMBIA, 4940, Radio 4940, 0431-0517, 13-08, Venezuelan
or Colombian songs, Spanish, religious comments. 15421.

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SMC Petitionn  View Printable Version 
Sunday, August 13 2023


Experimental Radio News #9 is out with some updated news about the SMC Petition. Bill Smith, Douglas, MA.
Sent from Mail<https://go.microsoft.com/fwlink/?LinkId=550986> for Windows

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BBC 9410  View Printable Version 
Sunday, August 13 2023

re 9410 kHz Sunday Aug 13:

TAIWAN Nothing heard on 9410 kHz today at 11.36 UT on Delhi-IND and Hiroshima-JAP,
on remote Perseus_net.

But Chinese language sce from Taiwan origin
heard on both 9773.991 kHz and 15375even kHz at 11.44 UT.

73 wolfie df5sx

From: Ron Howard
Sent: Saturday, August 12, 2023 9:05 PM
Subject: Re: [WOR] BBC 9410

Aug 12 - Found BBC Tinang on 9410, to have serious transmitter issues! After my good Aug 7 reception, I thought
everything was back to normal, but not so; today tuned in from 1111+ UT to find Fu Hsing BS (10kW from Taiwan)
overpowering the extremely weak BBC signal from the Philippines; in fact the BBC signal was so poor, it took me
a while to actually confirm the station underneath Taiwan was the BBC in English; BBC must have been running
very low power. Taiwan heard // 15375 // 9774, both with poor reception.

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