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Topics - alleycat

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HF Mystery Signals / Marker? On 18.1025 MHz [EDITED]
« on: November 05, 2020, 2356 UTC »
Narrowband marker? going "bippidy bippidy bippidy bippidy" nonstop for days (weeks?) with carrier center at 18.1025 MHz (listed as a W1AW frequency, but this signal doesn't sound like it's carrying data). Audio sample (USB mode tuned to about 18.102 MHz) at https://www.lutins.org/temp/181025.mp3. Thanks for any help ID'ing & 73 de KC2KLC.

EDIT: Corrected the URL; had ".NET" instead of ".ORG" by accident

HF Mystery Signals / 6815-6865 kHz 0120z on 22 Sep 2020 (OTH radar?)
« on: September 22, 2020, 0138 UTC »
50 kHz bandwidth signal with several distinct modes (refer to attached waterfalls). Is this some kind of over-the-horizon radar?

Spy Numbers / CW 5-figure groups (cut numbers?) 6824
« on: September 19, 2020, 2317 UTC »
Seem to be using too many different letters for "cut numbers" - mostly 5-figure alphabetic groups, with some actual numbers as well - not sure of the ENIGMA classification for this one.

Utility / 6507 - French - Maritime?
« on: September 19, 2020, 2304 UTC »
I don't speak French, so I'm curious about the station I'm hearing on 6507 (USB) in central New York State right now (2300) - I heard a reference to Canada, and I'm hearing some numbers repeated (although it's clearly not a numbers station). The cadence suggests maritime weather conditions being related - can anyone confirm? Thanks!

Spy Numbers / V2 on 11.635 LOUD
« on: July 12, 2020, 2103 UTC »
5-figure Spanish female numbers with crazy strong signal in upstate NY - eventually interspersed with digital signals (not sure the mode - haven't monitored numbers in a LONG time). Reading up on it now - presumably V02 interspersed with SK01.

Utility / PPU Observatoriio Nacional (Brazil) 10 MHz
« on: February 08, 2020, 2247 UTC »
At 2245z time station PPU (Observatoriio Nacional, Brazil) is competing with WWV on 10 MHz in Binghamton (upstate) NY (sample at www.lutins.org/temp/PPU.mp3).

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