NEW DELHI — You will recall that All India Radio, the public service broadcaster in India, adopted the Digital Radio Mondiale standard for the digital terrestrial radio transmissions in the MW and SW bands. 35 MW transmitters of AIR, ranging in power from 20 kW to 1000 kW, continue to operate in using DRM in various fashions. Two more transmitters, 100 kW each, are under trial in Delhi and these are expected to be operational in a couple of months, according to DRM news.
DRM news has compiled a list of manufacturers of stand-alone DRM receivers from various manufacturers, that is of interest.
Inntot Technologies, a start-up enterprise in India, has developed a software-based DRM receiver, which is based on a generic processor, and meets all the specifications for the Minimum Receiver Requirements, supporting all DRM core functionality such as Journaline advanced text and Emergency Warning Functionality. The design has been field tested in number of cities in India. It is expected to be very cost effective.
GeekSynergy, another start-up, is working on the development of a “highly affordable yet full-featured” DRM receiver, which is likely to be showcased by summer 2018. The company is also working on incorporating DRM into smartphones using one of the most well-known chips installed in all the branded mobile phones.
The Chinese company Gospell Digital Technology has presented a very well-reviewed DRM Receiver, the GR 216, which is already in production. These units can receive DRM signals in the AM as well as the VHF bands for large-area and local services, respectively. Core DRM features such as Journaline advanced text and EWF — with automatic device-wake-up from deep-standby are supported. Gospell is developing a DRM receiver dongle, GR-227, which can be plugged in the existing audio systems in the automobiles on USB ports or Aux input to receive DRM signals. The receiver model will allow legacy cars already on the road and with analog AM and FM reception to be upgraded to DRM digital reception through this simple add-on device. The unit is likely to go into production shortly.
Communications Systems is the first radio manufacturer in India to domestically develop and produce a DRM receiver (AV-1401), an “ambitious full-featured” digital radio. It supports all the DRM-specific features including Journaline advanced text and Emergency Warning Functionality. As part of the company’s continued commitment to DRM in India, the model was recently updated and easily meets DRM’s minimum receiver requirements as recommended by the DRM Consortium.