ad: Winterfest-1

Strange Signal (Oddity Station?)

Discussion in 'Ham Radio Discussions' started by KE0MRJ, May 23, 2017.

Tags:
ad: L-HROutlet
ad: l-rl
ad: MessiPaoloni-1
ad: L-MFJ
ad: Subscribe
ad: Left-2
ad: Left-3
  1. KE0MRJ

    KE0MRJ Ham Member QRZ Page

    I pick a signal up consistently at 13.451mhz on my ham set. It covers both the upper and lower sidebands from 13.425 through 13.465ish. The sound on AM is like a squeeky wheel. I'm trying to determine if it is local interference or if others can hear it too. I am located in Central Iowa. Can anyone hear it?
     
    Last edited: May 23, 2017
  2. NI3QM

    NI3QM Ham Member QRZ Page

    Same signal here just west of Philadelphia. About s9. Antenna is a ground mounted vertical to a Kenwood R5000 Receiver
     
  3. KM4SII

    KM4SII Ham Member QRZ Page

    Same signal here in North Carolina too. Not super strong, about S-6, but my dipole is only 20 feet up....
     
  4. N5AL

    N5AL Premium Subscriber QRZ Page

    Receiving it here, about S-6, in Central Mexico.
     
  5. W7UUU

    W7UUU Super Moderator Lifetime Member 133 Administrator Volunteer Moderator Platinum Subscriber Life Member QRZ Page

    Hearing it VERY light here - S4 tops, on QSB ups.... sounds like data bursts to me

    I did a short recording on my IC-7300 (SB-7300 some might say :D:D)

    I'll dump it onto sound cloud and post a link - NOT STRONG by you can surely hear the bleepbleepbleep

    Just curious - if it's not in a ham band, is it really an issue?

    Dave
    W7UUU
     
  6. N7ZAL

    N7ZAL Ham Member QRZ Page

    Sounds like a good question for "The Spectrum Monitor?" They should know if no one here does.
     
  7. W7UUU

    W7UUU Super Moderator Lifetime Member 133 Administrator Volunteer Moderator Platinum Subscriber Life Member QRZ Page

    Here's the signal just now from my IC-7300... weak but discernable. Just some digital data stream is all I can imagine it to be. No threat to our bands, not at this time anyway.

    WAV file is here: https://www.dropbox.com/s/oz561tplhts2nmg/20170523_030635.wav?dl=0

    Is it possible Sputnik in fact didn't fall to a fiery doom and it's batteries somehow recharged??? :rolleyes:

    Dave
    W7UUU
     
    WD0BCT likes this.
  8. N7ZAL

    N7ZAL Ham Member QRZ Page

    Is the signal composed of both the "hum" and the tone pulses?
     
  9. W7UUU

    W7UUU Super Moderator Lifetime Member 133 Administrator Volunteer Moderator Platinum Subscriber Life Member QRZ Page

    As far as my old ears can tell, it's just an endless repeating series of [identical?] pulse tones. The hum etc. is just local noise.

    As I said, S4 would be generous (Burt? You see this? :rolleyes:) I'm sure somewhere it's S9 somewhere .... but not here for sure.

    Still wondering why it matters at all - it's not in a ham band and is very narrow and well behaved. Not talking the 1970s Ruskie Pecker of Wood here.... :)

    Maybe some international digital radio feed? That's my guess....

    Dave
    W7UUU
     
    N7ANN likes this.
  10. N7ZAL

    N7ZAL Ham Member QRZ Page

    It is an interesting mystery for us technical types, I guess. The tones could be sync or pilot tones...just a wild guess.

    Anyone else "name that tune?" :)
     

Share This Page