Did you get the ETA? Also If someone has already got ETA
 For a particular controller then can I use the same to import my controller if customs has held it. I recently bought a Radiomaster TX16S controller and it's now held in customs (mennambakkam) and they are asking for ETA and import permission . I found that this is available in their https://saralsanchar.gov.in/ website the older website you have mentioned in this thread are removed I guess. I have given the ETA existing in that website to the customs office hope they clear my controller .

They might clear it but they sure will charge you a hefty customs duty. I faced the same situation sometime back for the same TxRx

To obtain Equipment Type Approval (ETA) from the Wireless Planning & Coordination (WPC) wing of the Ministry of Communications in India, you need to follow a specific procedure. Here are the general steps involved:

1. Understand the requirements:
2. Identify the appropriate category
3. Prepare the necessary documentation
4. Submit the application
5. Application review
6. Equipment testing
7. Approval and issuance of ETA

It's important to note that the exact procedure and requirements may change over time.
For further information for WPC Approval services, visit our website ,we assist you in getting those.

As expected... I learn alot from this forum.