What are the unlicensed frequency bands in Singapore?

In Singapore the 6 m band is not available for amateur radio operation. From Aug 13, 2019 onwards, the frequency bands 2300-2400 MHz and 3300-3500 MHz are no longer available for amateur radio in Singapore, and will be removed from the IMDA Radio Amateur Handbook.

License free bands SlBandApplications45.825-5.875 GHz5865-867 MHz- RFID – LoraWAN – 865 to 867 MHz – Z-Wave – CSR 564 (E) 865.20 MHz6335 MHz726.957-27.383 MHz- CB RadioLicense free bands in India | Thejesh GN thejeshgn.com › wiki › notebook › license-free-bands-in-india

Today, some Wireless N routers can operate on both 2.4 GHz and 5 GHz bands concurrently . Routers could function just as well at 2.3 or 2.5 GHz, but they’re not allowed. It’s the rules. The 2.4 GHz band, which runs from about 2,400 to 2,483.5 Mhz, is where routers have to live.

The 5.15 − 5.35 GHz band is available in the US, China, Korea, Europe, Japan and India. 5. 47 − 5.725 GHz is open for unlicensed access in the US, Korea, Europe and Japan . In addition, the 5.725−5.85 GHz is available in the US, China, Korea and India 1 .