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Topics - Strange Beacons

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HF Mystery Signals / UNID "Time Signal" at 7475 in AM mode
« on: December 16, 2019, 2034 UTC »
I was alerted to the presence of what sounds a bit like a time signal via a Reddit thread.

Anyone have any idea what this might be?

HF Beacons / 30 meter "One Second Dasher" at 10121.50 kHz
« on: March 27, 2019, 2034 UTC »
I made a recording of a 30 meter "One Second Dasher" today, 03/27/19 at 1700 UTC.

Has this signal ever been logged here?

Today, I recorded a strange whistling sound on "The Pip" frequency at 3756 kHz.

I've been monitoring the 80 meter band after reading a post on Reddit from a user who claims to have heard the old Lincolnshire Poacher signal being transmitted there. While listening and studying the waterfall, I noticed an unusual signal on top of the Russian frequency holder signal "The Pip" at 3756 kHz. It stopped just shortly after I tuned to that frequency and started up my screen recorder. To my ear, the "whistling" sounds like it might be actually coming from the lips of a human being. Couple this with the fact that the "Poacher" has been heard on that band, it suggests to me that there are pranksters aplenty afoot on that band (and in the past, I have heard from others this section of the amateur band is notorious for a lot of weird activity from European amateurs).

Software / FLDIGI question re automatic, timed transmissions
« on: March 23, 2019, 0350 UTC »
I use WSJT-X for WSPR transmissions and I like the way that it automatically transmits, stops for a timed interval, then transmits again.

Question: Is there any way that FLDIGI can be set up so that it will transmit automatically? (I'm wanting to use FLDIGI to send a CW signal at a timed interval).

Any help would be greatly appreciated. I've searched online and cannot find any source that discusses this question.

Over the past week, I have been monitoring my SDR for drift net beacons, from around 1750 to 2500 kHz, mostly in the very early hours of the morning (before dawn, approximately 6:00 a.m., Pacific Standard Time) and in the evening (after dark, from around 7:00 p.m., Pacific Standard Time). I'm a pretty patient radio listener, but given the wide frequency range where these signals can be found, along with the fact that they seem to only transmit every four or five minutes at a go, it has been a time-consuming effort on my part.

So far, I've not seen/heard anything at all. My location is in Seattle, Washington USA and I'm using my own KiwiSDR with W6LVP mag loop. I generally can hear all signals in the lower frequency ranges quite well.

So, this begs the question here, has anyone else been able to locate and track any of these beacons on the west coast of the United States? I note that Token has posted a video of his catches, but most of the talk on these signals seem to be coming from either people on the east coast of the US, or from the coastal areas of Australia and Asia.

If anyone has picked up any of these signals from a US west coast location, please post frequencies, dates and times, as I'd like to start keeping a log of what others are catching near my location in order to improve my chances.


General Radio Discussion / Sad News: Don Schimmel has passed away
« on: February 04, 2019, 0108 UTC »
Sad News: I just learned today that Don Schimmel has passed away at the age of 91. Don worked in communications with the U.S. Navy and CIA. He is best remembered by radio hobbyists as the author of the book, "The Underground Frequency Guide" and the online column about radio oddities, "Radio Intrigue." SK


ID and Translation Requests / UNID Low Frequency signal at 147.25 kHz
« on: January 19, 2019, 0511 UTC »
Tuning through the low frequency spectrum on my KiwiSDR tonight and found this odd signal. I have absolutely no idea what this is, but it sounds and looks a bit like a digital mode of some kind. You can listen to it yourself via my KiwiSDR (if it is still transmitting).

Software / Transmitting WEFAX images with FLDIGI
« on: January 18, 2019, 0130 UTC »
Does anyone here have any experience using FLDIGI to transmit images using WEFAX mode?

I have been attempting to transmit images, but keep running into the problem of the program timing out after 5 minutes of transmitting (a dialog box opens that says, "TX timeout expired! Are you awake"). The FLDIGI guide suggests going into the configuration settings and changing the browser settings for "Inactivity timeout" via the scrolling menu that is there. I have done this, using every setting possible and the program still times out after 5 minutes.

Not having any luck with that, I then tried making the images smaller, thinking that lower resolution and small sized might help. Still no luck.

I've reached the end of my tweaking and tinkering with this and could really use some help from anyone who has successfully transmitted WEFAX images with this program. If you could help me with any FLDIGI settings that I need to check, or with changing the images to make them more friendly to the program, I'd really appreciate it.


SDR - Software Defined Radio / KiwiSDR antenna question
« on: January 07, 2019, 0148 UTC »
I'm currently using a spare MFJ-1622 antenna I had lying around my radio shack on my KiwiSDR. It seems to work fairly well, but I'm wanting to make my SDR the best it can be. All of the research that I've done for KiwiSDR antennas keeps leading me back to the W6LVP mag loop. So far, I've read only glowing reports about it and I've been emailing back and forth with Larry, the antenna builder. I'm impressed with all of his responses and I am leaning pretty heavily towards buying one of these.

Does anyone here have any experience using this antenna?

Update: It always pays to search through older threads on here. Though not specifically about how the W6LVP works with a KiwiSDR, this thread discusses the antenna's merits.

SDR - Software Defined Radio / Need help getting my new KiwiSDR setup
« on: December 31, 2018, 0142 UTC »
UPDATE 1: I figured it out. Was able to access the SDR admin page using my iPad, then set up things so that I can now access using my Windows machine.

UPDATE 2: A bit of a head's up for anyone who purchases one of the KiwiSDR units and who (like me) primarily uses a Windows computer: If your router has a DHCP server, it will automatically assign an IP address to the KiwiSDR. This function is usually performed by your network firewall / router. The "kiwisdr.local" hostname resolves to that assigned IP address via software on the Kiwi and the host computer you're connecting from (the one running your browser). But the kiwisdr.local hostname may not be recognized by all systems, particularly any machine that is running Windows.

For a workaround to this problem, you need to specify the IP address manually by port forwarding 8073 in your router. I use Xfinity/Comcast and I was able to go into my router via the admin page and specifically port forward the IP assigned to the Kiwi (by default, normally port 8073). Once I had completed that, Windows would then recognize the URL and I was able to get inside the Kiwi admin page using the standard kiwisdr.local:8073/admin URL.

Hope this helps anyone who encounters difficulties. If you run into any trouble getting your Kiwi set up and configured, feel free to contact me. I'm not a computer guru and can't solve every problem, but I do know a few things about how to manipulate a home router to make it do things that you want them to do.


Received my KiwiSDR today, assembled it and connected everything. I'm able to connect to it locally, but am having trouble setting it up in order to share it with the world. When I say that I can connect locally, I mean that I can enter in the local IP my router has assigned to the KiwiSDR and specify port 8073 at the end of the IP and it works. Here is an example of the IP that works:

However, I cannot get the browser to load using the kiwisdr.local:8073 address. Which in turn means that I cannot access the kiwisdr.local:8073/admin page to try other suggested methods of making the SDR publicly available.

According to the Quick Start Guide! that I'm working with, trying to get kiwisdr.local: 8073 to open using Windows 10 is a known issue. Anyone know a workaround?

Here is what the quick start guide says about Windows 10: Most versions of Windows don't recognize the kiwisdr.local hostname. But do not use the workaround for Window 10 or later. There appears to be some sort of conflict and using kiwisdr.local will result in connections that have lots of audio overrun problems.

Thank you.

I was transmitting Digital SSTV on the 40 meter band this morning when I spotted this strange signal in the waterfall. I'm not sure if I was tuned to the proper frequency or not, and I tried both USB and LSB. I suspect that this is likely someone doing a radio test of some kind. Tuned via the Web SDR located in Newport, Oregon, USA.

Video of the signal here.

I've been on the air for about three hours this morning, on 40 meters, and I only noticed the signal pop up about two hours ago. It only transmitted twice, both times for about 5-7 minutes. At first, I thought it was someone else (like me) transmitting waterfall images via digital SSTV.

I've been monitoring this frequency since I recorded the video and it has repeated a few times. In fact, it is transmitting again as I type this.

Any ideas as to what it may be? I'm using this Web SDR if you want to check it out yourself: http://kiwisdr.smeter.net:8073

Spy Numbers / UVB-76 "The Buzzer" mixed with odd digital signal
« on: December 14, 2018, 2237 UTC »
I tuned into 4625 kHz this morning to listen to The Buzzer and noticed what appears and sounds like a strange digital signal mixed in between the intervals of the normal buzzing sounds. I have no idea what this is, but it is certainly odd behavior for this signal, as it typically just generates a continuous buzz every second, with nothing transmitted in between.

Video recording of the anomaly signal.

Anybody have any ideas what this might be?

It started a few days ago and yesterday, a person on Reddit posted recordings of voice transmissions on the signal that can be heard here and here.

Utility / What's up with WLO Marine?
« on: September 30, 2018, 1710 UTC »
I've been a fan of demodulating the RTTY/SITOR-B weather and anti-piracy transmissions from WLO Marine for years. However, it appears that they are no longer active.

I just checked the WLO Marine / Shipcom website and the page is now mostly blank, except for a post dated September 30, 2018 that says "Coming Back Soon."

Anyone know what the story is with this?


Curt / W9SPY

General Radio Discussion / H.R.5709 - Pirate Radio Act
« on: July 24, 2018, 0238 UTC »
Posted on my Twitter feed today: Full text of the Pirate Radio Act.

(To amend the Communications Act of 1934 to provide for enhanced penalties for pirate radio, and for other purposes).


Edit: Fixed broken link

Other / Chinese Over-the-Horizon Radar Appears on 40 meters
« on: March 13, 2018, 1555 UTC »
The International Amateur Radio Union Region 1 (IARU-R1) Monitoring System (IARUMS) reports that one of China’s over-the-horizon radar (OTHR) installations has been causing interference in the Amateur Radio 7 MHz band. The IARUMS February newsletter reports on that intruder and others.

Other top 5 intruders include a “single-letter beacon” transmitting either the letter “K” or the letter “T” on 7039.3 kHz. The source is believed to be the Russian Pacific in Petropavlovsk-Kamchatsky. A Russian F1B teleprinter signal (RDL) has appeared on 7193 kHz, with an encrypted frequency-shift-keyed (50-baud) signal, originating in Kaliningrad. Authorities in Germany and Switzerland have filed official complaints.

A Russian orthogonal frequency-division multiplex OFDM 60 signal has been showing up on 14.235 MHz, covering 2.76 kHz. It’s said to be located in Moscow. Three Russian OFDM 60 signals were active at the same time on February 13. A Russian F1B signal has been observed on 14.308 MHz, 50 baud, 500 Hz shift, also reported to be in Moscow.

In the “miscellaneous or bad news” category, IARUMS Region 1 Coordinator Wolf Hadel, DK2OM, reports Spanish-speaking “fishermen” on 3560 kHz (USB), heard daily at 1600 UTC or later. These signals have been heard on other 80-meter frequencies. Broadcaster Radio Hargeisa in Somaliland continued to be reported on 7.120 MHz (AM) daily. On 7.175 MHz, Radio Eritrea continues to be jammed daily with white noise transmissions attributed to Radio Ethiopia. The third harmonic of Radio Tajik on 4765 kHz is still being heard on 14.295 MHz.

Full story HERE.

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