Received via the W3HFU SDR with the 120 foot T2FD antenna.
Frequency 27195kHz 27.195MHz 27,195
MFSK signal that appears to be slightly off-frequency (center frequency on roughly 27194.6 kHz or 27194.7 kHz), this signal is often heard when propagation conditions to points south are good - usually when the Spanish language taxi cab dispatchers start to come in.
In addition to the nearly non stop MFSK signal, there is another similar sounding (but not identical) signal that is centered right on 27195.0 kHz. There's also what appears to be an OOK on off keying type signal on 27195.1 kHz. Lots of activity on this frequency right now.
RCRS regulations allow up to 4 watts power and bandwidth is limited to 8 kHz. Any non-voice mode may be used. Of course, there are plenty of folks using voice (usually AM mode, but FM and SSB have been noted) in the 27190 kHz to 27200 kHz ballpark.
For, well, reasons, I guess, 27.195 MHz seems to be the second most popular of the six 26-28 MHz RCRS frequencies available under Part 95 Chapter C of the FCC rules. 27.255 MHz, even though it is shared with CB Radio Channel 23, is by far the most popular, since the rules permit up to 25 watts power instead of 4 watts. Antenna height is limited to the 6.1m / 18.3m rule, otherwise known as the antenna may not be mounted more than 20 feet above the highest point of the structure on which it is mounted, and may not be mounted more than 60 feet above the ground, whichever is less.
Either way, an antenna 60 feet up with 25 watts would produce very good range just by the nature of the 27 MHz band. A halfway decent base antenna (there is no limit on the antenna itself, no gain limit, no antenna size limit under the FCC rules) would really give you some range, as the non-stop mixture of data signals of all sorts on 27255kHz on a basically daily basis shows us.
Topic: 27.195 MHz Data Bursts RCRS Very Busy 1600 UTC 22 Oct 2026 [W3HFU SDR] (Read 21 times)