We seek to understand and document all radio transmissions, legal and otherwise, as part of the radio listening hobby. We do not encourage any radio operations contrary to regulations. Always consult with the appropriate authorities if you have questions concerning what is permissible in your locale.

Show Posts

This section allows you to view all posts made by this member. Note that you can only see posts made in areas you currently have access to.

Messages - Dag

Pages: [1] 2 3 4 5 6 7
S9+10dB in Florida.

Well done!

Spy Numbers / Re: HM01 Cuban Numbers 13435 AM 2130 UTC 14 SEP 2023
« on: September 17, 2023, 1835 UTC »
S9 on at 1800z 11635.0 kHz, voice 5-number groups with digital signal.

22 Meter Band HiFER Beacons / QRSS viewer for Mac?
« on: September 03, 2023, 1306 UTC »
I use Argo software for QRSS viewing on a PC, but my main radio software computer is an Apple computer.

Is software similar to Argo available for a Mac?

S9+10 dB in Central Florida on an attic dipole.

Utility / Re: CIS Navy on HF
« on: March 26, 2023, 1305 UTC »
13558 kHz, RDL has been very active today at 1215z and afterwards with RTTY and FSK CW "RDL RDL" followed by six 5-number group and on/off short RTTY transmissions.

Utility / 29779.0 kHz RTTY
« on: December 10, 2022, 1438 UTC »
10 m propagation is favorable to EU as i type this.

The past few weeks I've been hearing an RTTY signal above the 10 m ham band on 29770.0 kHz, often apparently in an idle mode.

Who is it?

Utility / Re: digital signal IDs as CGA984 20150 kHz
« on: November 04, 2022, 0919 UTC »
This signal is located in Ontario.

Utility / Re: digital signal IDs as CGA984 20150 kHz
« on: October 30, 2022, 1521 UTC »

 As of 1856z, the signal is still present and S9 and just sent it's CW ID as CGA984. . 

Thanks for your report. After my last post, the signal briefly stopped and started a few times for about a minute and upon restart, it again provided the CW ID.

Copiable at this Kiwi:

Utility / digital signal IDs as CGA984 20150 kHz
« on: October 30, 2022, 1348 UTC »
On 20150 kHz, a ~25 kHz wide digital signal which sounds like white noise identifies in CW about every 30 minutes as CGA984.
This signal is S9+10 dB in central Florida now at 1347 UTC.
I've been listening for about 45 minutes and during that duration, the signal stopped and started a few times with brief interludes of quiet and/or a CW ID which I can confirm is CGA984.

What is this?

Tufts University "Food Compass" shows Cheerios with a score of 95 (very healthy) and beef scoring at a horrid 33.
Higher score: healthy.
Lower score: bad for you so say the experts. Experts?


Utility / Japanese Slot Machine signal
« on: August 21, 2022, 0949 UTC »
0931 UTC Sunday Aug 21 2022
Japanese Slot Machine
6250 khz

0935 UTC. Sunday Aug 21  dits about 0.2 seconds apart on these frequencies:  1019, 1311, 1603 kHz, 1895, 2187, 2478, 2769, 3069, 3353, 3644, 3936, 4227, 4519, (4811), 5102, 5394, 5686, (5976), 6368, (6562), (6854)...

These signals are 292 kHz apart. The above frequencies in parentheses are calculated frequencies where the dits should be but were not heard.

1019, 1311, and 1603 are in the AM broadcast band. 4811 kHz had a strong STANAG signal and the other frequencies not heard may be due to propagation.

I have heard two other similar ditters yesterday in the 8000 and 9000 kHz bands but did not think they were related to today's findings. I now believe they are of the same network.

Addendum:  As I look at the 4227 and 4519 kHz signals, I get the impression that every other dit is of a stronger transmitted power, alternating between high power and low power dits. This may be the case on other frequencies as well but it is subtle but most noticeable on the 4 MHz frequencies.

There's a weather fax signal S9 on 3853 kHz now in the 75 meter ham band. May be DDH3 Hamburg 0n 3855 kHz.   Massive signal.

HF Mystery Signals / Re: UNID 4649.5 USB 1530 UTC 26 FEB 2022
« on: February 27, 2022, 0255 UTC »
On 4648 kHz, there's a few closely spaced carriers at 0252 z heard via KiwiSDR in Poland.
Every few minutes, one of the carries stops transmitting and CW is heard:
I copied CW about 10 wpm:
and "?" in high speed as if by human.




Pages: [1] 2 3 4 5 6 7
HFUnderground T-Shirt
HFUnderground T-Shirt
by MitchellTimeDesigns