Sunday, November 26, 2023

Mystery Asian DRM signal on 927 kHz

UPDATE 202301127: @fractional_n posts - "Probably North Korea.

The North Korean station at 6140kHz also had an ID=64."

From @fractional_n (located near Tokyo) on Twitter:

(Machine translated from Japanese) "From last night's medium wave record

I discovered that DRM waves are being emitted at 927kHz!

Although NHK Kofu Daiichi is strong, the SNR increases to a maximum of 8 dB. ID=64 and no station name label is displayed. However, the contents of the data cannot be demodulated. It seems that the data format cannot be decoded by Dream.

It is speculated that it probably originates from China or North Korea."

Any ideas?

Monday, November 13, 2023

CNR-1 China DRM Test


CNR-1 DRM test 
(NOTE: Broadcasts are reportedly in 11.64kbps UEP (21.6%) aac Mono)

Beijing 30kW 0deg ID:3ED
6030 2025-1805 (Tue 0600-0900 off)
13825 0100-0900 

Dongfang 30kW 16deg ID:3ED
17770 0100-0900 

Kunming 30kW 32deg ID:2
15180 0100-0400 0800-1100
17800 0400-0800

Qiqihar 30kW 225deg ID:1
13850 0000-0400
11990 0400-0900 
13710 0900-1200

Urumqi 30kW 98deg ID:3EC
9655 2200-0100
17830 0100-0800
9655 0800-1200

(Dongfang 30kW 41deg 11695kHz is registered but has not been used.)

Translated Info courtesy of Takahito Akabayashi (from WOR list)

Tuesday, November 7, 2023

"Music 4 Joy" switches to DRM only

 "Music 4 Joy" switches to DRM only.

From Nauen:

7225 kHz 1830-1930 UTC 101 deg 100kW

9810 kHz 2000-2100 UTC 213 deg 100kW

13650 kHz 1300-1400 UTC 62 deg 100kW

13710 kHz 1800-1900 UTC 158 deg 100kW

Saturday, November 4, 2023

Radio Romania International releases Winter DRM schedule

Radio Romania International will be broadcasting much of their content in DRM. Here is the Winter 2023-2024 broadcast schedule: 

Monday, October 30, 2023

CML Micro's DRM1000 chipset and new Gospell receivers

"The DRM1000 contains all the hardware, software, IP and patent licenses required for a radio equipment manufacturer to produce a dual-mode (digital and analog) DRM-capable receiver. It offers a 60% cost reduction and 80% power reduction over existing DRM technologies, according to the company. CML Micro notes that the device can run effectively from solar or wind-up rechargeable batteries, as well as small disposable batteries. "

“We are truly honored to collaborate with CML Micro in launching two groundbreaking DRM receivers based on the DRM1000 module, namely the GR-220 and GR-221,” stated Haochun Liu, head of research and development at Gospell. “We’re confident that our combined efforts will not only deliver unparalleled value to people but also pave the way for the next chapter in DRM technology.”


Read the whole story here.