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Author Topic: Digital net on 27635 kHz  (Read 943 times)

Offline SV1XV

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Digital net on 27635 kHz
« on: June 04, 2017, 1430 UTC »
For a few years now, a digital network using ROS mode operates on 27635 kHz. Stations are mainly in Europe and use "Alfa-Tang" style callsings with numerical prefixes. Read more in this article ROS network on 27635 kHz on my blog.


Offline R4002

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Re: ROS data mode Digital net on 27635 kHz
« Reply #1 on: June 04, 2017, 1923 UTC »
Interesting post, I've noticed digital nets on 27500 kHz USB / 27.500 MHz USB as well as what seems to be the most common European CB band ROS frequencies, 27235 kHz USB and 27245 kHz USB / 27.235 MHz USB and 27.245 MHz USB mode.

I've monitored PSK31 on 27500 kHz in the past, and have come across digital modes (nearly always ROS digital mode) on 27235 and 27245 while browsing through UK and mainland Europe based remote SDR receivers. 

Always glad to know there's digital activity on 11 meters, in the form of PSK31, ROS, or even digital SSTV.
U.S. East Coast, various HF/VHF/UHF radios/scanners/receivers

Offline SV1XV

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Re: Digital net on 27635 kHz
« Reply #2 on: June 05, 2017, 0139 UTC »
27245 is also active with digital traffic. On this frequency they use SIM31, but traffic levels are low. 27700 is always busy with SSTV (analog) when the band is open.

Info about SIM31: http://www.sim.on2vhf.be/.


Offline SV1XV

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Re: Digital net on 27635 kHz
« Reply #3 on: July 22, 2018, 1409 UTC »
A nice Es opening today with European digital trafic on 27635 kHz, from Maidenhead squares JN and JO.

See here for a PSK-reporter map: Still active: ROS network on 27635 kHz.


 

Offline Josh

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Re: Digital net on 27635 kHz
« Reply #4 on: July 22, 2018, 1731 UTC »
ROS mode is one of my favs. I was using it during the arrl fiasco when they deemed it spread spectrum and thus verboten for use by Americans. Works great! I should make an interface for the cb and see if I can get out. I'm DX122 an I'm back quiet!
Conveniently located near Vincennes Indiana.