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Vintage Amateur and Military Radio Amateur/military receivers and transmitters, morse, and any other related vintage comms equipment. |
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18th Nov 2017, 10:17 am | #21 | |
Dekatron
Join Date: Jul 2007
Location: Penrith, Cumbria, UK.
Posts: 3,687
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Re: Unknown 160m Transmission
Quote:
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Regds, Russell W. B. G4YLI. |
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18th Nov 2017, 11:51 am | #22 | |
Moderator
Join Date: Mar 2012
Location: Fife, Scotland, UK.
Posts: 22,871
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Re: Unknown 160m Transmission
Quote:
Someone came to the farm in the early 90s and asked about putting a mast up for a navigation system for the Forth. They'd picked the spot because of the adjacent trig point. I asked "What frequency?" He demurred and said below the TV band. I said I used radio gear quite a lot and needed the exact frequency and specification of the signals. He'd thought he was dealing with someone non-technical. He named the frequency, right in 70cms "Oh, I'm licensed for 400W in that range, and high gain or omni antennae... are you sure this is going to work?" He went away. Result! David
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Can't afford the volcanic island yet, but the plans for my monorail and the goons' uniforms are done |
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19th Nov 2017, 8:42 am | #23 |
Heptode
Join Date: Jun 2012
Location: Southeast Norfolk, UK.
Posts: 773
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Re: Unknown 160m Transmission
Hi David,
I was NOT that man! Yes, trig pillars were popular sites, as were lighthouses and coastguard lookouts. I ran a chain covering the Dover Strait. We took power from the CG station at Langdon Battery and used an old gun mount for the Texas Tower mast. Anyway, this is getting away from the topic, Top Band activity! I listen occasionally, using the G4FPH SDR, and hear quite a bit of AM activity on 1977kHz. I have a KW-160 and a Codar AT5 here so once I finish putting down a few more radials I will give the band a try. Oh, and if anyone comes across any HIFIX gear, I'd love to get hold of a Low-Power Transmitter! 73 Roger/G3VKM |
19th Nov 2017, 8:48 am | #24 | |
Heptode
Join Date: Jun 2012
Location: Southeast Norfolk, UK.
Posts: 773
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Re: Unknown 160m Transmission
Quote:
There's some interesting photos on that link, must have a closer look. Cheers Roger |
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19th Nov 2017, 1:28 pm | #25 |
Dekatron
Join Date: Aug 2007
Location: W.Butterwick, near Doncaster UK.
Posts: 8,932
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Re: Unknown 160m Transmission
Great pictures.Seems I have started something mentioning by saying I did not recognise that 1925khz transmission.
Very enjoyable posts though i add.
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19th Nov 2017, 3:35 pm | #26 |
Tetrode
Join Date: Jan 2008
Location: Shetland, UK.
Posts: 79
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Re: Unknown 160m Transmission
https://youtu.be/WBeymCP_-xA?list=UU...ZJ2fL8iv3Phamg
I recorded this clip a few years ago. ..... (The trusty old B28 is still giving yeomen service) SORRY! wrong clip appeared. https://www.youtube.com/watch?v=Q0MU...ZJ2fL8iv3Phamg Last edited by gm0ekm cecil; 19th Nov 2017 at 3:46 pm. Reason: Finger trouble. |
20th Nov 2017, 8:37 am | #27 |
Heptode
Join Date: Jun 2012
Location: Southeast Norfolk, UK.
Posts: 773
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Re: Unknown 160m Transmission
Hi Cecil,
I think that the second clip is LF Loran? Or, depending when you made it, it could be Pulse/8 another Decca/Racal system that I last saw used in the 90s. 73 Roger/G3VKM |
20th Nov 2017, 6:11 pm | #28 |
Tetrode
Join Date: Jan 2008
Location: Shetland, UK.
Posts: 79
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Re: Unknown 160m Transmission
Hi Roger, yes the video clip on 100KHz. was I suspect was the Norwegian Loran C. The recording was made in 2013 after the US system was closed down, of course all gone now as the system in Europe has also been closed down. Ironically there is talk of a back up hyperbolic system for the current GPS . The first video clip (VMARS AM net) was posted in error ........... finger trouble!!
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