Tuesday, May 24, 2016

Community Radio India Compendium 2016

Community Radio Compendium 2016 is available at :


(Jose Jacob, VU2JOS, National Institute of Amateur Radio, Hyderabad)

Online HF prediction tools, tailored for Utility DXing

Recently I bumped into the relaunched web pages of the highly esteemed HF Prediction pages of Space Weather Services from the Australian Bureau of Metereology : 

On their sub-page "Internet Tools" they offer some excellent tools for HF propagation prediction which seemed to be tailored just to the needs of us listeners.
I wrote a short PDF (7 pages, 22 illustrations) about that, giving some examples. This paper also deals with multipath propagation, degrading even strong digital signals plus FAX. Among the Aussies' web page you will find a set of tools under "Digital HF Prediction", dealing perfectly with just this challenge.

Link to donwload the PDF:

Thursday, May 05, 2016

Marconi Radio International to start regular weekly transmission

As from Wednesday, 4th May 2016 Marconi Radio International (MRI) will start a regular service according to the following schedule:

On Wednesdays, from 1800 to 1900 UTC, from 2000 to 2100 UTC, and from 2200 to 2300 UTC on 7690 kHz USB mode (alternative frequencies: 7700 and 7790 kHz).

The power is in the region of 100 watts. They have standardized transmissions & there are now only broadcasts 60 minutes long. The first half hour is always a DX programme in English (Italian Shortwave Panorama) followed by mailbag (or DX) show in Italian or non-stop music interspersed with announcements in English, Italian, German, Spanish and Catalan.

MRI encourages reception reports from listeners. Audio clips (mp3-file) of broadcasts are welcome !
MRI QSL's 100%. Reception report to be sent to : marconiradiointernational@gmail.com - Please don't forget to include your postal address as some lucky listeners will also receive a printed QSL card.

(Marconi Radio International)

Monday, May 02, 2016

All India Radio adapts its strategy in new broadcasting landscape

During a session on Public Service Broadcasting (PSB) at RadioAsia,  Fayyaz Sheheryar the Director General of All India Radio said all PSB broadcasters are facing the question of how to make revenue within the public service model.

Full interview at :

Friday, April 29, 2016

LimeSDR: Flexible, Next-generation, Open Source Software Defined Radio

Features and specifications

RF Transceiver: Lime Microsystems LMS7002M MIMO FPRF (Datasheet)
FPGA: Altera Cyclone IV EP4CE40F23 - also compatible with EP4CE30F23
Memory: 256 MBytes DDR2 SDRAM
USB 3.0 controller: Cypress USB 3.0 CYUSB3014-BZXC
Oscillator: Rakon RPT7050A @30.72MHz (Datasheet)
Continuous frequency range: 100 kHz – 3.8 GHz
Bandwidth: 61.44 MHz
RF connection: 10 U.FL connectors (6 RX, 4 TX)
Power Output (CW): up to 10 dBm
Multiplexing: 2x2 MIMO
Power: micro USB connector or optional external power supply
Status indicators: programmable LEDs
Dimensions: 100 mm x 60 mm

More info at :   https://www.crowdsupply.com/lime-micro/limesdr

Airspy Mini announced !

We are delighted to announce the long awaited Airspy Mini, the SDR Dongle built on top of the proven Airspy R2 infrastructure with an affordable price. Check this beauty!

Technical specifications:

Continuous 24 – 1800 MHz native RX range, down to DC with the SpyVerter option
3.5 dB NF between 42 and 1002 MHz
Tracking RF filters
35dBm IIP3 RF front end
12bit ADC (80dB Dynamic Range, 64dB SNR, 10.4 ENOB)
10, 6 and 3 MSPS IQ output - Optimized for portable and tablets
Up to 6 MHz panoramic spectrum view
0.5 ppm high precision, low phase noise clock
4.5v software switchable Bias-Tee 100% Compatible with SpyVerter and High Performance LNA
IQ or Real, 16bit fixed or 32bit float output streams
No IQ imbalance, DC offset or 1/F noise at the center of the spectrum that plagues all the other SDRs
No drivers required! 100% Plug-and-play on Windows Vista, Seven, 8, 8.1 and 10, all Linux Flavors, Mac and Android
Best software support of all existing SDRs
Compatible with Raspberry Pi, Odroid, Pine64 and UP boards
Operating temperature: -10°C to 40°C

We started a pre-order for the Early Birds in a limited quantity at $99 each.

Order here : https://www.itead.cc/airspy-mini.html

(Youssef via airspy list)

Thursday, April 28, 2016

SDRplay announces the acquisition of Studio1 SDR software

28/April/2016,Wakefield,UK : SDRplay Limited has today announced that it has reached an agreement with Sandro Sfregola, (formerly CEO of SDR Applications S.a.s.) to acquire all Rights, Title and Interest in Studio1 a leading software package for Software Defined Radio applications.
Jon Hudson, SDRplay Marketing Director said: "We are delighted to have reached this agreement with Sandro to acquire Studio1. Studio1 is the perfect complement to our SDR hardware products and gives us the ideal platform to deliver a complete class leading SDR solution for our customers. We look forward to working with Sandro and further developing Studio1 to unlock the full capability of our current and future products".
Hudson added: "Studio1 has established a strong customer base with users of many other SDR hardware products. Studio1 will continue to be available as a stand-alone product from WoodBoxRadio http://www.woodboxradio.com/studio1.html for the foreseeable future , but we also look forward to further developing Studio1 to specifically benefit present and future owners of our products"
Sandro Sfregola added: "I am very pleased to have reached this agreement with SDRplay. The long term future for SDR lies in complete end to end solutions and I feel the SDRplay RSP combined with Studio1 software gives users an outstanding combination of performance and affordability".
About Studio1:
Studio1 was developed in Italy by SDR Applications S.a.s. and has hundreds of happy customers around the world. Studio1 is known for its user friendly stylish GUI, CPU efficiency and advanced DSP capabilities, including features not available on other SDR software packages.
About SDRplay:
SDRplay limited is a UK company and consists of a small group of engineers with strong connections to the UK Wireless semiconductor industry. SDRplay announced its first product, the RSP1 in August 2014
(Press Release)

Tuesday, April 26, 2016


CNR A16 Schedule effective 27th March, 2016


Eye Radio launches nationwide shortwave broadcasts

Eye Media, the parent organization of Eye Radio, has announced that it has launched a new shortwave broadcast service to complement its existing FM broadcasts in South Sudan.

The broadcasts starting today will bring listeners news and information in Arabic, as well as Dinka, Nuer, Shilluk, Bari, Zande and Lutoho.

According to a press release today from Eye Media, "the Eye Radio Shortwave will cover the whole of South Sudan including remote areas in which communities are not able to access FM radio staions."

Eye Radio is one of the fastest expanding media houses in South Sudan after launching FM repeaters in several state capitals last year, expanding the station's reach beyond Juba where it is based.

Full story at :

Eye Radio plans to start on shortwave wef 26th April, 2016 :

0400-0500 UTC 11730 kHz
1600-1700 UTC 17730 kHz

Related :
Eye Media launches shortwave broadcast

US Coast Guard solicits bid for DRM equipment

USCG Research and Development Center, New London, CT , USA solicits bids for DRM equipment :

(Alokesh Gupta)

Monday, April 25, 2016

AIR VBS on 9870 kHz back on air

Vividh Bharati service of All India Radio on 9870 kHz is back on air after being off the air for almost a month.

DRM Recommends DRM30 for FCC’s AM Revitalization

Digital Radio Mondiale has submitted comments to the FCC in regards to the AM Revitalization (MM Docket No. ET 13-249). While the organization says that it is supportive of changes to rules for AM broadcasters, in its comments it also submits a proposal for the FCC to consider its DRM30 standard mode for replacing analog sound broadcasting in frequency bands below 30 MHz.

More at :

Sunday, April 24, 2016


A16 / Summer 2016 schedule for IRRS-Shortwave

Effective 16 March, 2016-30 October 2016

IRRS-Shortwave (Milano, Italy)

Freq.(kHz) Time UTC Time CET Days         ITU Zones               Power        Antenna Language
7290   1800-1900  2000-2100  Fri,Sat,Sun 18-20,27-30,37-39 150 kW   Europe, MidEast, Africa English (1)
9510   0800-0900  1000-1100  Sat             18-20,27-30,37-40 150 kW   Europe, MidEast, N Africa English (1)
9510   0930-1100  1130-1400  Sun            18-20,27-30,37-40  150 kW  Europe, MidEast, N Africa English (1)
15190 1500-1530  1600-1630  Sun            38-45,48-51,54-60  150 kW  MidEast, Asia, Australia English (2)
15515 1500-1530  1600-1630  Sat             38-41,47-48,52-53  150 kW  East Africa  Var (3)

(1) To Europe, Middle East and N Africa
(2) to Middle East, Asia and Pacific (also heard in N America & Europe)
(3) to Africa in local languages

See program schedule for language and program details
Information on any additional test transmission will be available on our Web site http://www.nexus.org/NEXUS-IBA/Schedules

CET: Central European Time (winter) or local time in Central Europe (UTC+1)
UTC: Universal Time Coordinated equivalent to GMT

Last update on March 15, 2016

in parallel with Internet Radio NEXUS (IRN) (24 hrs)
see also: European Gospel Radio
For more information:
PO BOX 10980, I-20110 Milano, Italy.
ph: +39 02 2666971

SDR# rev 1444 is out

SDR# rev 1444 is out , many enhancements and fixes.
Download at :   http://airspy.com/download/

License Programme for DRM’s Audio Codec MPEG xHE-AAC Announced

San Francisco, April 18, 2016—Via Licensing Corporation announced today that a patent pool license for Extended High Efficiency AAC (xHE-AAC) is in the final stage of development.
xHE-AAC is the most recent update to the Advanced Audio Coding (AAC) family of technologies standardized by ISO MPEG. xHE-AAC combines an optimized speech coder with a high-performance general audio coder resulting in a single audio coding system capable of achieving exceptional results at low bit rates with any type of audio content, whether speech, music, or ambient sounds.
xHE-AAC is ideally suited for radio broadcast, which combines a variety of content from talk radio to voice over music or sound-effects to purely musical program content. For this reason, xHE-AAC has been selected as the audio coding format for Digital Radio Mondiale (DRM), a digital radio system designed to work over existing analog radio broadcast infrastructure, including shortwave. Apart from radio broadcast, xHE-AAC is well suited for radio streaming services, especially over congested networks. Due to its coding efficiency and scalability, with stereo bit rates as low as 12 kilobits per second xHE-AAC enables streaming services over 2G networks such as those found in emerging markets, and it can save bandwidth costs for service providers and consumers even on 3G and 4G LTE networks.
A number of xHE-AAC essential patent owners have been working to establish the patent pool with Via Licensing, including Dolby Laboratories, Electronics and Telecommunications Research Institute (ETRI), Fraunhofer IIS, Koninklijke Philips N.V., Orange S.A., Sony Corporation, and VoiceAge Corporation. 
Royalties for the xHE-AAC license are expected to be as follows:
Volume  (per unit/annual reset)        Per-Unit Fee*
For the first 1 to 500,000 units           $1.08
For 500,001 to 1,000,000 units          $0.88
For 1,000,001 to 2,000,000 units       $0.78
For 2,000,001 to 5,000,000 units       $0.70
For 5,000,001 to 10,000,000 units     $0.67
For 10,000,001 to 20,000,000 units   $0.47
For 20,000,001 to 50,000,000 units   $0.45
For 50,000,001 to 75,000,000 units   $0.40
For 75,000,001 and more units          $0.35
* Preliminary; subject to change, pending availability of the license
The xHE-AAC program is designed to make it easy for current and future AAC pool licensees to add a license grant for xHE-AAC to an existing AAC license agreement. Similarly, reporting a mix of both AAC and xHE-AAC products is streamlined for AAC licensees. The license fees presented above are inclusive of the underlying AAC patents. In other words, xHE-AAC licensees will not be paying twice for the patents that are granted under the AAC Patent License Agreement.
"We are very pleased that the xHE-AAC patent pool is nearing launch," said Joseph Siino, President of Via. "Via and its licensors have supported the Digital Radio Mondiale initiative for many years. As the format evolves, just as the AAC codec family itself evolves, it is important for us to aid commercialization of the technology by simplifying access to the essential patent rights for manufacturers and developers worldwide."
The xHE-AAC patent pool is expected to launch in the second quarter of 2016.
About Via Licensing Corporation
Via Licensing Corporation is a wholly owned subsidiary of Dolby Laboratories, Inc., a company with more than 50 years of experience in innovation and technology licensing. Via is dedicated to the development and administration of licensing programs for mandated, de facto, and emerging standards on behalf of innovative technology companies in the audio, broadcast, wireless, and automotive markets. For more information about Via, please visit vialicensing.com

(Press Release)