Path: utzoo!utgpu!ugw.utcs.utoronto.ca!CUVMA!SWL-L Date: Fri, 9 Feb 90 20:50:31 EST Reply-To: Eric Roskos Sender: Short Wave Listener's List Comments: Warning -- original Sender: tag was From: Eric Roskos Subject: Re: All India Radio (Was: Re: Sony-2010 - Noise) X-To: swl-l@cuvmb.cc.columbia.edu To: UofToronto LAN redistribution Message-ID: <90Feb9.215035est.58176@ugw.utcs.utoronto.ca> Newsgroups: bitnet.swl-l Distribution: ut Approved: devnull@gpu.utcs.toronto.edu 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)