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Author Topic: 11m Band Activity 16 DEC 2022  (Read 461 times)

Offline RobRich

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11m Band Activity 16 DEC 2022
« on: December 16, 2022, 1540 UTC »
11m DX is hopping this morning here. Airspy HF+D and 31' vertical.

« Last Edit: December 16, 2022, 1542 UTC by RobRich »
Tampa, FL USA | US Map Grid EL88
Airspy HF+ Discovery | 2x Msi2500 Msi001 | 2x RTL-SDR V3 + NE602 | 2x RTL-SDR V4
148' Loop-on-Ground | 31' Vertical | 18' End-Fed Vertical | PA0NHC MiniWhip

Offline R4002

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Re: 11m Band Activity 16 DEC 2022
« Reply #1 on: December 16, 2022, 1857 UTC »
It's been going nuts.

I'm currently listening to what sound like truck drivers (Spanish speaking) on 28005 AM. 

I'm sure these land mobile users are operating in 10 meters all the time, but now they're actually coming through.  Lots of taxi cab comms on 25 MHz, 26 MHz and 27 MHz as the propagation shifts from the UK and Europe to Latin America

Recent logs:

28.235 MHz AM - taxi dispatcher (Spanish language)
28.205 MHz AM - taxi dispatcher (Spanish language)
28.085 MHz AM - truckers - English language
28.055 MHz AM - taxi dispatcher (Spanish language)
28.035 MHz AM - taxi dispatcher (Spanish language)
28.025 MHz AM - taxi dispatcher (Spanish language)
28.005 MHz AM - multiple stations at once, hearing OMs and a YL taxi dispatcher


Some other oddities:

27.975 MHz AM - group of US truck drivers using export radios, most of which are in serious need of an alignment - carrier frequencies noted below:

27.974.1 MHz
27.976.0 MHz
27.977.9 MHz
27.975.3 MHz
27.975.8 MHz



27.385 MHz LSB - as to be expected, then somebody playing music (in FM mode) on top of the SSB traffic - CB Channel 38
27.255 MHz dozens of different data signals, with AM and FM voice (mostly AM) mixing in
27.207 MHz - Another odd FSK signal, center frequency might be closer to 27.208 MHz
27.205 MHz FM - Lots of FM signals on top of each other - CB Channel 20
27.205 MHz AM - AM and FM and SSB, the area around 27.2 MHz / CB Channel 20 is really messy
27.201 MHz USB - Spanish language, very good signals
27.198 MHz USB - center frequency 27.199 MHz - narrow band FSK data signal, 2.5 kHz wide
27.195 MHz MFSK - constant multiple-carrier frequency shift keying data signal, about 6.5 kHz wide
27.195 MHz MFSK - the constant signal faded away, now a rapid burst signal is on the frequency (with AM voice traffic)
27.195 MHz AM - taxi dispatch lady (Spanish language)
27.195 MHz AM - "Can you copy the radio?" (English, very good signal)
27.095 MHz - Yet another unique data signal, bursts every few seconds, FSK, about 5 kHz wide
27.095 MHz AM - another taxi dispatcher - YL speaking Spanish
27.000 MHz USB - Weak voice traffic noted
26.995 MHz MFSK - Very similar signal to the one noted on 27.195.  The 27.195 MHz MFSK data signal is a good indicator of the band being open to Latin America
26.995 MHz AM - Hearing OMs talking, does not sound like a taxi or other business or land mobile user
26.995 MHz AM carrier, 26994.5 kHz zero beat
« Last Edit: December 16, 2022, 1923 UTC by R4002 »
U.S. East Coast, various HF/VHF/UHF radios/transceivers/scanners/receivers - land mobile system operator - focus on VHF/UHF and 11m

 

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