Both DMR mode and the AMBE codec involve foreign patents, which require royalty payments. These contribute significantly to the overall cost.
Just a thought: Regarding the implementation of shared walkie-talkie policies, I think one of the biggest issues is the cost. For example, the currently available shared Xiaomi walkie-talkies cost around 300 yuan, which is much more expensive than the cheaper simulation models that cost only a few tens of yuan.
What is a shared radio? In my understanding, it provides a legal outlet for large numbers of unlicensed users, such as those working on construction sites or in hotels and security, allowing them to use radios legally.
So why not obtain a legitimate business license? Of course, many do. Large companies don't mind spending money on radios and frequency fees, which can range from tens of thousands to millions of yuan. If they want to operate legally, they can. Therefore, they are not the target customers for shared radio systems. However, small and medium-sized enterprises, especially individuals, are a different story. These "small details" are what make up the mainstream market.
And then people ask, "Why not use a public two-way radio?" They say they aren't necessarily cheap, and the power output is also small, making them difficult to use. If you can get similar functionality at a comparable price, why wouldn't you choose the better option? Anyone selling radios would definitely recommend a high-power analog model.
Returning to the common walkie-talkies, many users simply use them without understanding the various laws and regulations. They only know how to choose a machine that is both affordable and of good quality. If your machine is legal but more expensive than the simulated ones, then those illegal walkie-talkie users have no incentive to switch to legal ones. After all, illegal machines are still usable, and they are also cheaper. Furthermore, there is a large demand for common walkie-talkies in society. If you want them to use legal ones, then the legal ones must be competitively priced compared to the illegal ones. Although the crackdown on illegal walkie-talkies has become increasingly strict, if the price difference remains so significant, people will continue to take risks. As for functionality, many users only know how to use the PTT button. Having too many buttons can actually make them feel complicated and difficult to use. Therefore, a powerful user interface is not necessarily competitive; in fact, it can weaken competitiveness.
Due to the complexity of digital systems, they are naturally more expensive than analog radios. Furthermore, it is difficult to predict the number of users when using DMR. Personally, I believe that the most important thing now is to develop an affordable and simple shared radio system. In this context, using a domestically produced, proprietary system would be the better choice.
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