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WEIRD CW ON 28.174 USB

Discussion in 'General Ham Radio Discussion' started by Se7en, Apr 12, 2012.

  1. Se7en

    Se7en Well-Known Member

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    Scanning through the CW part of 10 meters and come across this odd sound, i tried to reply back in CW but it just does the same tone over and over.

    What is it?


     

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  2. EDUK8TR

    EDUK8TR Administrator

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    I was going to say a beacon but there is no ID in the recording. Is there one?
     
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  3. W5LZ

    W5LZ Crotchety Old Bastard

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    Try 'inverting' the audio. The 'gaps' being the characters, the tone being 'background'. Or play it backwards?? ;)
    - 'Doc
     
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  4. Se7en

    Se7en Well-Known Member

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    no ID just a solid BEEP then that silly tune. ill record it again stand by
     
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  5. Se7en

    Se7en Well-Known Member

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    i drifted up and back down and tried LSB it only shows up in USB with the preamp on i get 3 1/2 S unit of it. filter is also enabled.
     

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  6. EDUK8TR

    EDUK8TR Administrator

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    Perhaps a 10m repeater? It does have the typical female voice indicating the freq. Still no ID. Maybe there is something wrong on their end and not getting the ID in.
     
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  7. AudioShockwav

    AudioShockwav Extraterrestrial Admin Staff Member

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    28.174 9H1IA MALTA 7.5W,VERTICAL

    Or possibly
    28.175 VE3TEN C OTTAWA # 10W, GP

    Maybe?
    Usually they ID at intervals.

    73
    Jeff
     
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  8. Moleculo

    Moleculo Administrator Staff Member

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    I heard this yesterday also. The voice prompts you hear is his IC-7000 announcing the operating mode. I don't know what the weird tone is.
     
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  9. Mudfoot

    Mudfoot Supporting Member

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    Might post it over at Radio Reference, those guys are into that strange stuff.

    It does sound like some sort of telemetry.
     
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  10. Captain Kilowatt

    Captain Kilowatt Professional Amateur Staff Member

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    Maybe I missed it but the CW identifier is "DE VE3TEN FN25" making it the 10m beacon near Ottawa Ontario. Perhaps the ID is sent in digital burst as well as CW. That is my guess.As for the steady weak tone, that may be carrier leakage from the transmitter. It is amazing what a few milliwatts can do. I have heard that 100's of times before on HF.

    This is from the VE3TEN beacon site:


    VE3TEN

    The OARC's 10 m beacon VE3TEN is located a few miles south of Ottawa, near the intersection of Century Road and Hwy. 416. Current equipment consists of a rack mount box containing the transmitter and power supply, a separate rack box with the identifier unit and a Ringo Ranger antenna mounted approximately 50 feet above ground level. The output of the transmitter has been turned back to 11-12 watts and a ducted cooling system has been made to increase the life span of the radio. The beacon operates on 28.175 Mhz and the mode is frequency shift keying. This means that the radio is on at full output at all times but that the transmit frequency is varied by about 700 hz to provide an audio tone shift at the receiver. FSK can be received by a receiver in any mode.











    Note that the transmitter is on 100% of the time. this is why I think the steady tone is carrier leakage.
     
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  11. Beetle

    Beetle Well-Known Member

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    CK beat me to it. It very clearly says "DE VE3TEN FN25".

    DE = This is
    VE3TEN = Call sign; Canadian
    FN25 = Maidenhead grid square for location

    Googling VE3TEN provides all the information you need. I didn't try looking in the QRZ database, but the call's probably in there.

    Not telemetry, not a "silly tune", just Morse code sent with a slight frequency offset from the carrier in FSK mode.
     
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  12. Moleculo

    Moleculo Administrator Staff Member

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    Where in the video was the ID? I either skipped over it or didn't listen long enough (don't have time to listen to it right now)
     
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  13. Se7en

    Se7en Well-Known Member

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    I didn't upload a video just a sounds file. Lol

    Sent from my DROIDX using Tapatalk 2
     
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  14. Moleculo

    Moleculo Administrator Staff Member

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    Eh, that's what I meant. When I listened before I just skipped ahead to the middle and heard solid tone and then skipped forward and heard warble tones. I'll listen to the whole thing later.
     
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  15. Mudfoot

    Mudfoot Supporting Member

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    I'm definitely not used to hearing F1A beacons. I think someone posted an unknown transmission a few weeks ago that if my memory recalls, kinda sounded similar to this.

    Were gonna be hearing a lot more different stuff now that conditions are improving.
     
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