HFU HF Underground
General Category => General Radio Discussion => Topic started by: UncleJohn on August 29, 2022, 1826 UTC
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According to BBC's "Global Short Wave Frequencies"..."from 27 March - 29 October 2022" during 15-1900 GMT is a xmit To "Middle East & Gulf States, Daily on frequency 12025 kHZ", yet, for some reason that signal reaches moi's qth every day with a very decent signal, though it degrades hourly. Anybody know the origin of the xmit. location or how's come that signal reaches my neck of the woods?
(Used to be I heard xmit.'s from AIR via the North Pole but this 12.025 mhz. has me stumped).
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I can also hear the BBC on 12025 kHz quite well here in the mornings. Short-wave.info says the TX is in Kranji, Singapore.
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See here;
https://www.rtl-sdr.com/kiwisdr-tdoa-direction-finding-now-freely-available-for-public-use/
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O.K. Josh, Looky Heah, I, more or less, know that this "SDR" thingy can "enable" one to hear broadcasts via the Internet, where as me has no internet @ my QTH (I'm @ the library) I use Only an actual copper wire (insulated) antenna to actually catch signals through the actual atmosphere of Earth. So as an aside rhetorical ? what's the fun in using the internet to hear stuff if you can't "catch" the signal Ye Olde Fashion Way"? If ya git my drift? 8) On the other hand, I suppose:
Oh, like www.radio.garden
::) Yeah, how cool is that?! ::)
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According to Short-Wave.info the transmitter is in Kranji, Singapore, 250 KW, azimuth 320 degrees, in other words, you're getting them off the side of the beam, which has next to nothing but Pacific Ocean between it and you in the PNW, thanks to the Asia pipeline.
When prop's in decently, the 25 Meter Band can cast signals a long ways.
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What I intended to infer was use the tdoa method to see where the tx site is located. Being able to hear a hf tx beamed somewhere far away from you is quite normal especially considering the massive antennas and hundreds of kw often employed. Kinda like how I often have listened to dx HAMs working other dx HAMs, even low power can cross the globe easily if the prop gods are willing.
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Now that we live in the time of the Divine Fansome all sorts of dx is possible for those who believe and use real radio's with knobs.
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What I intended to infer was use the tdoa method to see where the tx site is located. Being able to hear a hf tx beamed somewhere far away from you is quite normal especially considering the massive antennas and hundreds of kw often employed. Kinda like how I often have listened to dx HAMs working other dx HAMs, even low power can cross the globe easily if the prop gods are willing.
OK no biggie...but seriously almost ALL digital references are above my experience as far as radio reception goes. If you want to pls. explain "tdoa"...OHHHH, I just now (& I do mean now just went to wikipedia & typed in "tdoa" & up pops "Time of Arrival". Will be printing page (& looks like a link or two) & hopefully will broaden my meek understand. Thanks.
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Now that we live in the time of the Divine Fansome all sorts of dx is possible for those who believe and use real radio's with knobs.
Gotta Say Thanks!
8)
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See here;
https://www.rtl-sdr.com/kiwisdr-tdoa-direction-finding-now-freely-available-for-public-use/
Not a good time to be a pirate.
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All jests aside, instead of using an online direction finder, it's probably easier to just look at schedules, and then look at a world globe to determine the chances of whichever station may be hitting your antenna, taking the daylight/nighttime conditions into account.
These days there are so relatively few SW broadcasters out there it's not that difficult to at least pin one down as a tentative.
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See here;
https://www.rtl-sdr.com/kiwisdr-tdoa-direction-finding-now-freely-available-for-public-use/
Not a good time to be a pirate.
The KiwiSDR TDoA capability is vastly overrated. It's good to within a hundred miles or two if you're skilled in selecting receivers around the target location. Which means you need to already have an idea where the station is. Useful if you want to know of a transmitter is in say Virginia or Montana, but it's not going to give you the zip code.
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See here;
https://www.rtl-sdr.com/kiwisdr-tdoa-direction-finding-now-freely-available-for-public-use/
Not a good time to be a pirate.
The KiwiSDR TDoA capability is vastly overrated. It's good to within a hundred miles or two if you're skilled in selecting receivers around the target location. Which means you need to already have an idea where the station is. Useful if you want to know of a transmitter is in say Virginia or Montana, but it's not going to give you the zip code.
Which is fine by me.
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UncleJohn, I'm not too far away from you (I'm in Lake Stevens), and the BBC comes in well on both 12025 and 12095 kHz (12095's not in English) in the morning this time of year from the Singapore relay station.
I also heard Adventist World Radio this morning from Sri Lanka on 11955 kHz, which certainly is not aimed at us, either. If you're anywhere the U.S. West Coast, it's amazing how many Asian and Oceania signals we can pick up on fall and winter mornings.
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UncleJohn, I'm not too far away from you (I'm in Lake Stevens), and the BBC comes in well on both 12025 and 12095 kHz (12095's not in English) in the morning this time of year from the Singapore relay station.
I also heard Adventist World Radio this morning from Sri Lanka on 11955 kHz, which certainly is not aimed at us, either. If you're anywhere the U.S. West Coast, it's amazing how many Asian and Oceania signals we can pick up on fall and winter mornings.
"Hey Hey" fellow PacNW SW Listener, Haven't tried Sri Lanka but will, thanks. You see my Radio Romania post of very recent? The 3-4gmt time slot is quite good, reception-wise. Cheers. 8)