What is this mode? Found at 7215 and very wide!

  • 1
  • Question
  • Updated 2 years ago
Can someone tell me what mode this is I am seeing at 7215 and looks like 9khz wide?
I saw this at 18:10 UTC in Detroit, MI area.
Tnx de Arnie W8DU
Photo of Arnie


  • 108 Posts
  • 20 Reply Likes

Posted 2 years ago

  • 1
Photo of Bob Craig, K8RC

Bob Craig, K8RC

  • 262 Posts
  • 105 Reply Likes
I have no answer for you but, with the powerful spectrum-monitoring tool in front of you, you will see a lot of strange non-amateur but man-made wonders.
Photo of Kirk


  • 10 Posts
  • 3 Reply Likes
Looks like a DRM radio signiture.  I often listen to RNB out of New Zeland.  Of course it could also be an encrypted radio station but it would have the  same or very simular signature.


Kirk, K6KAR
Photo of Mark Gottlieb

Mark Gottlieb

  • 107 Posts
  • 3 Reply Likes
Looks like Commercial Shortwave radio.
Photo of Bill Carnett

Bill Carnett

  • 40 Posts
  • 8 Reply Likes
I've seen that too.  In a somewhat, maybe, related question:  I've seen ham call signs in the waterfall.  Anybody know how they do that?  
73, Bill
Photo of K3DCW


  • 95 Posts
  • 36 Reply Likes

Video ID, which is available in Fldigi, DM780 and MultiPSK.

It uses an adaptation of Feld Hell mode to show callsigns, CQ, mode IDs, or just about any other text you might want.  Not as useful as RSID for digital fans, but for those that are not diehard digital users, it can be a useful tool.

Photo of Arnie


  • 108 Posts
  • 20 Reply Likes
I doubt this is a signal from down under at this time of day in the midwest.
As for the callsigns seen in the waterfall on digital modes, that is done in software, the most popular of which are HRD and FLDigi. It is called Reed_Solomon ID encoding, of RSID for short. It can be very useful in identifying what mode you are sending so the person on the other hand who may be a newbie does not have to guess.
73 de Arnie W8DU
Photo of Walt


  • 236 Posts
  • 75 Reply Likes

is your friend - lots to look at and compare, or submit if you have something new.

Photo of W0DRO


  • 3 Posts
  • 0 Reply Likes
I found this on ARRL intruder web page:

Broadcaster “Sound of Hope” from Taiwan continues to be jammed by a much stronger signal from China on 18.080 MHz each morning at about 0600 and later. Broadcast transmissions in this band are illegal, and BNetzA has complained. The agency also has complained formally about intruding spurious transmissions daily from a broadcaster in Iran on 7205 kHz, extending down to 7195 kHz and up to 7215 kHz.
Photo of K3DCW


  • 95 Posts
  • 36 Reply Likes
From 1800-1900z, 7220 (center frequency) is used by Radio Romania for a Digital Radio Mondiale (DRM) transmission from Tiganesti, Romania.
Photo of Arnie


  • 108 Posts
  • 20 Reply Likes
Thanks! That is the most likely candidate. Fits the time and frequency and expected propagation. Is it me or has 40 meters pretty much dried up lately as far as qso'ing?
Photo of Ria - N2RJ

Ria - N2RJ, Elmer

  • 2314 Posts
  • 956 Reply Likes
It definitely looks like DRM. 
And yes, 40 is the pits these days. I've been mostly on 80. 
Photo of David Warnberg

David Warnberg

  • 698 Posts
  • 91 Reply Likes
Could be DRM..   program is called ARTEMIS to help identify those signals

Photo of Rick  WN2C

Rick WN2C

  • 306 Posts
  • 47 Reply Likes
Photo of K3DCW


  • 95 Posts
  • 36 Reply Likes
Wrong freq.  http://www.shortwaveschedule.com/index.php?freq=7220

You also need to make sure you use center frequency, not the lower edge. All regulatory/scheduling assignments are done based upon center frequency.

A very useful site indeed, but I've always found it best to go to one of two sources.

1) The HFCC, which is an organization of broadcasters and administrations around the world who voluntarily work out the schedule coordination, with updates as needed throughout the year. http://www.hfcc.org/data/index.phtml

They publish the official schedules from many broadcasters. However, not every broadcaster or administration participates, thus real-world monitoring helps.

Therefore, a good secondary reference is: 

2) Eibi - http://www.eibispace.de/

They use a blend of HFCC and on-the-air monitoring to identify broadcasters. 

However, shortwaveschedule.com is indeed useful, especially for the "on the air now" feature.