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Author Topic: Unknown digital signal  (Read 2864 times)

Offline caylorman

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Unknown digital signal
« on: February 20, 2019, 0253 UTC »
   Can anyone help me determine what digital mode this is?  I've heard it a couple times on other frequencies.  At first I thought it might have been some variant of PACTOR, but the sweeping signals through me off.  Thanks.

Generally recording from Northeast Indiana
Kenwood TS-570D, SDRPlay RSP2, 107' longwire @ 30'
QSL's appreciated, caylorman@gmail.com

Offline Token

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Re: Unknown digital signal
« Reply #1 on: February 20, 2019, 0323 UTC »
Go with your gut.  That is indeed PACTOR IV.  The sweeping tone is called a 2 tone chirp, and is part of the P IV.

Mojave Desert, California USA


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