Several years ago, when Drone/UAVs were made accessible to the general public worldwide, they were unregulated. Then came along users who flew them close to airplanes, near airports, attached cameras and flew them into private properties, flew them up to >3000 feet and the battery ran out resulting in an uncontrolled rapid descent into public property or people and a whole lot of other documented activities which you can see on YouTube and other social media platforms. Authorities worldwide had to do something to ensure security, privacy and public safety... and now we have many regulations. I hope you know where I am going with this.
According to my knowledge, some of the low-end SDR are just TV dongles. That is to say, you are owning TV receivers which should be totally legal. I also have one. The chipsets will be RTL2832U and R820T. It is very low in price (less than equivalent of SGD20). So you just need to install software and can use it as a professional look-like receiver. However, the sensitivity and selectivity should not be expected too much. It is even not as good as my TECSUN PL880 radio while receiving FM broadcasts.
But, in the other way, if you are talking about some SDR with transmitting function like HACKRF ONE, then you should really be aware about it.
Post by Roland Turner 9V1RT on Oct 15, 2017 23:10:44 GMT 8
TV receivers which can only receive conventional TV broadcast frequencies are of course perfectly legal, however even low-end dongles are typically capable of receiving a much wider range than that. I would strongly suggest that if you're going to use such a device as a communications receiver that you avoid listening to anything that you're not entitled to receive.
I own a couple of Lime Microsystems devices. My use to date of these devices is purely for astronomical (Jovian noise) and test equipment uses, although I do intend to use them for communication reception - and perhaps transmission - particularly to use computational means to deal with Doppler shift in satellite communication. I'll be sorting out the license consequences with IMDA before doing so.