Radio channels “AIR National” and “FM Rainbow Kolkata” added on Doordarshan Free Dish DTH Service on Satellite GSAT-15 (KU Band) at 93.5° East. AIR National and FM Rainbow Kolkata Radio channels are available on Frequency 11090, Vertical, 29500 and is in MPEG-2 format.
AIR National Radio channel is available on DD Free Dish on Channel No.5 and FM Rainbow Kolkata Radio channel is available on DD Free Dish on Channel No.6.
The below are the technical parameters of AIR National and FM Rainbow Kolkata Radio channels.
| Technical Parameters | New STB | Old STB |
| LNB Frequency | (09750-10600)Universal | 05150 |
| Frequency | 11090 | 3810 |
| Polarity | Vertical | Vertical |
| Symbol Rate | 29500 | 29500 |
| 22K | Auto | OFF |