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Author Topic: Mystery Signal On 410.99 khz  (Read 2326 times)

Offline Matt_B

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Mystery Signal On 410.99 khz
« on: November 08, 2017, 0850 UTC »
Anyone know what the heck this is? Series of beeps....sounds like it could be morse code, but IDK. 
Matt Boland
Southwestern CT
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Offline Rob.

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Re: Mystery Signal On 410.99 khz
« Reply #1 on: November 08, 2017, 1359 UTC »
It is likely a Non Directional Beacon (NDB): https://en.wikipedia.org/wiki/Non-directional_beacon  You can search to see what it might be here: http://www.airnav.com/navaids/

If you can figure out what letters are being sent in Morse code that would help with identifying which one you are hearing.
- Rob

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Offline jFarley

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Re: Mystery Signal On 410.99 khz
« Reply #2 on: November 08, 2017, 1719 UTC »
Hi Matt;

My guess is that you were hearing the lower sidband of the NDB CTZ in Clinton, NC.  Its carrier is on 412 kHz, and I measured the LSB as being on 410.993 last night.
Joe Farley, Near Chicago
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Offline Matt_B

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Re: Mystery Signal On 410.99 khz
« Reply #3 on: November 08, 2017, 1857 UTC »
Hi Matt;

My guess is that you were hearing the lower sidband of the NDB CTZ in Clinton, NC.  Its carrier is on 412 kHz, and I measured the LSB as being on 410.993 last night.

Ah.  Looks like that might've been what it was.  Thanks for the ID! :)
Matt Boland
Southwestern CT
Owner/Operator, "Radio Free Connecticut"
Skype: FairBol15
PS4: JupBol16