sdry@CU-ARPA.CS.CORNELL.EDU (02/04/90)
In article <1218@nsscb.UUCP>, nrg@nsscb.UUCP (G.Narotham Reddy) writes: > [...] When I turn it on to tune to 11620khz in the morning (7:30est) > I am getting lot of strange noise. [...] > > This situation persists for 11620, 11820, 9665, 9910, 15335, and 7412khz. Also I > tried to tune to these stations in the early hours like 3:00EST but > found the situation no better. I bought this radio only for the sake of > tuning to these stations. Does any one have a possible answer for this > agonizing situation. This sounds like you are trying to listen to All India Radio---at the wrong times. Most of the listed frequencies (15335 is an exception) are beamed to Europe, and can be heard there (and usually here in New York State) from (roughly) 2030 to 2230 UTC (1530 to 1730 Eastern standard Time). 9910 is actually useless after the BBC signs on 9915 at 2200UTC; 7412 worked best the last time I tried. 15335 (and 17387) tend to be used in the morning (1000-1100 UTC, 0500-0600 EST), and can often be heard here. (I also heard 17387 in Europe last month, but with heavy fading.) Sergio Gelato 76.27W 42.29N
narayan@BBN.COM> (02/04/90)
In article <3404.25cb3115@vax5.cit.cornell.edu> sdry@vax5.cit.cornell.edu writes: >In article <1218@nsscb.UUCP>, nrg@nsscb.UUCP (G.Narotham Reddy) writes: >> [...] When I turn it on to tune to 11620khz in the morning (7:30est) >> I am getting lot of strange noise. [...] >> >> This situation persists for 11620, 11820, 9665, 9910, 15335, and 7412khz. Also I > This sounds like you are trying to listen to All India Radio---at the >wrong times. Most of the listed frequencies (15335 is an exception) are >beamed to Europe, and can be heard there (and usually here in New York State) >from (roughly) 2030 to 2230 UTC (1530 to 1730 Eastern standard Time). 9910 is >actually useless after the BBC signs on 9915 at 2200UTC; 7412 worked best the >last time I tried. 15335 (and 17387) tend to be used in the morning (1000-1100 >UTC, 0500-0600 EST), and can often be heard here. (I also heard 17387 in Europe >last month, but with heavy fading.) > Sergio Gelato 76.27W 42.29N Continuing about All India Radio, I seem to notice severe interference on 11620 kHz 24 hrs a day! Sounds like a "car at highway speed" or something to that effect. Anybody notice this sound? Since AIR is the only station that I know of that uses this frequency, I am wondering if this is some kind of jamming. Moreover, this sound is barely 10 kHz wide centred about 11622 kHz or so. I do pick up AIR on 11620 at the scheduled times as given in WRTH but with this severe interference. The audio heard improves when tuned to the Lower side band. Regarding 9910 kHz, I received the English broadcast today at 0040 hrs UTC fairly well. This txm lasts till 0115. The other frequencies 9665 kHz and 15020 kHz are pretty good in the morning at 1330 UTC (0730 CST). ----------------------------------------------------------------------------- Sriram Narayan 810446 Texas A&M University | INTERNET: narayan@photon.tamu.edu | Go Alain Prost! BITNET: narayan@TAMVXEE
postmaster@CUVMB.CC.COLUMBIA.EDU (02/04/90)
In article <4175@helios.TAMU.EDU>, narayan@photon.tamu.edu (Sriram Narayan) writes: > In article <3404.25cb3115@vax5.cit.cornell.edu> sdry@vax5.cit.cornell.edu writes: >>In article <1218@nsscb.UUCP>, nrg@nsscb.UUCP (G.Narotham Reddy) writes: >>> [...] When I turn it on to tune to 11620khz in the morning (7:30est) >>> I am getting lot of strange noise. [...] >>> >>> This situation persists for 11620, 11820, 9665, 9910, 15335, and 7412khz. Also I >> This sounds like you are trying to listen to All India Radio---at the >>wrong times. Most of the listed frequencies (15335 is an exception) are >>beamed to Europe, and can be heard there (and usually here in New York State) >>from (roughly) 2030 to 2230 UTC (1530 to 1730 Eastern standard Time). 9910 is >>actually useless after the BBC signs on 9915 at 2200UTC; 7412 worked best the >>last time I tried. 15335 (and 17387) tend to be used in the morning (1000-1100 >>UTC, 0500-0600 EST), and can often be heard here. (I also heard 17387 in Europe >>last month, but with heavy fading.) >> Sergio Gelato 76.27W 42.29N > > > > Continuing about All India Radio, I seem to notice severe interference > on 11620 kHz 24 hrs a day! Sounds like a "car at highway speed" or something > to that effect. Anybody notice this sound? Since AIR is the only station > that I know of that uses this frequency, I am wondering if this is some kind > of jamming. Moreover, this sound is barely 10 kHz wide centred about > 11622 kHz or so. I do pick up AIR on 11620 at the scheduled times as given > in WRTH but with this severe interference. The audio heard improves when > tuned to the Lower side band. Regarding 9910 kHz, I received the English > broadcast today at 0040 hrs UTC fairly well. This txm lasts till 0115. > The other frequencies 9665 kHz and 15020 kHz are pretty good in the morning > at 1330 UTC (0730 CST). > > > > > ----------------------------------------------------------------------------- > Sriram Narayan 810446 Texas A&M University | > INTERNET: narayan@photon.tamu.edu | Go Alain Prost! > BITNET: narayan@TAMVXEE I also notice severe interference on 11620 24 hours a day starting about five days ago. Prior to that 11620 was coming fine at 1230 (6:30 CST) for 15 minutes and from 1330 (7:30) with a pgm in Sinhala. It was also pretty audible 2045-2230 (1445-1630 CST) with a program in English. Regarding 9665 at 1330 UTC, should it read at 9565 or is there an additional program on 9665 and 15020. I here an English pgm broadcast to North East Asia at 9565 and occasionally on the other frequency mentioned in the broadcast at 11760. K. Sankara Rao North Dakota State University
narayan@BBN.COM> (02/09/90)
In article <17@power.eee.ndsu.nodak.edu> ksrao@power.eee.ndsu.nodak.edu writes: >In article <4175@helios.TAMU.EDU>, narayan@photon.tamu.edu (Sriram Narayan) writes: >> tuned to the Lower side band. Regarding 9910 kHz, I received the English >> broadcast today at 0040 hrs UTC fairly well. This txm lasts till 0115. >> The other frequencies 9665 kHz and 15020 kHz are pretty good in the morning >> at 1330 UTC (0730 CST). Excuse me, you are right! It should read 9565 kHz. 9910 is a difficult catch though, with BBC 5 kHz away at 9915 kHz. The ICF-2010 does help in this regard. >> > > Regarding 9665 at 1330 UTC, should it read at 9565 or is there an >additional program on 9665 and 15020. I here an English pgm broadcast to North >East Asia at 9565 and occasionally on the other frequency mentioned in the >broadcast at 11760. ----------------------------------------------------------------------------- Sriram Narayan 810446 Texas A&M University | INTERNET: narayan@photon.tamu.edu | Go Alain Prost! BITNET: narayan@TAMVXEE |
roskos@BBN.COM> (02/10/90)
narayan@photon.tamu.edu (Sriram Narayan) writes: >Continuing about All India Radio, I seem to notice severe interference >on 11620 kHz 24 hrs a day! Sounds like a "car at highway speed" or something >to that effect. Anybody notice this sound? I've been listening to that frequency this evening, but I don't receive the interference here on the East Coast (Washington DC area). I only find two things around that frequency... the principal one is an unusual (to me) sort of interference from a foreign-language broadcast (I don't recognize the language) on 11605: the highest frequencies in the voice broadcast on 11605 seem to "bleed over" to 11620. As I move closer to 11605, the progressively lower frequencies do this, until I get near to 11605, at which point the normal broadcast becomes audible. (It's not how my radio normally works when tuning; I'm not sure if this station is unusually strong, or if it is due to some other reason.) At 11614.5 on USB there is a very narrow-shift RTTY transmission. But nothing at all, other than the above sounds from the station on 11605, are present on 11620. My NTIA "United States Frequency Allocations: The Radio Spectrum" wall chart from the GPO says that the broadcast band doesn't start until 11650; 11620 is in a band allocated to "Fixed, Government/Non-Government Shared" service. Maybe the interference is from some non-broadcast station, such as FDM RTTY, nearby? FDM RTTY sounds like a "car at highway speed," so it could be something like that. -- Eric Roskos (roskos@IDA.ORG or Roskos@DOCKMASTER.NCSC.MIL) "Some countries maintain `fast time' throughout the year, in which case it becomes `standard time'." -- DMA World Map 1150 (USGS)
narayan@BBN.COM> (02/10/90)
In article <1990Feb10.015031.26955@IDA.ORG> roskos@IDA.ORG (Eric Roskos) writes: >narayan@photon.tamu.edu (Sriram Narayan) writes: > >>Continuing about All India Radio, I seem to notice severe interference >>on 11620 kHz 24 hrs a day! Sounds like a "car at highway speed" or something >>to that effect. Anybody notice this sound? > >My NTIA "United States Frequency Allocations: The Radio Spectrum" wall >chart from the GPO says that the broadcast band doesn't start until >11650; 11620 is in a band allocated to "Fixed, Government/Non-Government >Shared" service. Maybe the interference is from some non-broadcast >station, such as FDM RTTY, nearby? FDM RTTY sounds like a "car at >highway speed," so it could be something like that. Someone else also suggested the above. But this was centred around 11622 kHz which meant one had to tune into LSB of AIR to make out anything which confirmed my reception. Anyhow, this transmission disappeared about a week ago (approx) and things seem to be back to normal, at least temporarily :-). "Character is what you are in the dark" - Dwight L. Moody ----------------------------------------------------------------------------- Sriram Narayan 810446 Texas A&M University | INTERNET: narayan@photon.tamu.edu | Go Alain Prost! BITNET: narayan@TAMVXEE |