按照我的理解，abc证对于uv段的功率限制都是25w，区别主要在于短波下的功率。那么问题来了，那么多uv段50w、100w段车台按理来说不能用啊，是我的理解有偏差么

@"luijp"#p6638 是这样，但有核准码就说明官方默许你使用，但你不能真就超功率使用

@"pjwbb"#p6649 那我如果验机填表格，应该只能写25w，但核准码查询之后又是50w，100w这样，这验机真的就是默许啊😂

只能按汽车时速表有220但你开车不能超过路段限速来理解了。业余无线电本身有技术研究实验性质，C证可以申请超过25W的功率限制进行通信实验，EME通信UV段入门就200W以上了。

@"luijp"#p6654 是的，你只能填写最高25瓦

@"BG6QED"#p6668 话是这么说，但100W的短波设备即使我承诺用15W地方管局也不给办。

@"sgub"#p6677 这个好像看地方

UV可以申请实验需要的功率 500瓦特的也有

@"luijp"#p6654 高速限速120，为什么有人要跑140

Do you have any questions or concerns about device power limitations?

luijp

According to my understanding, the abc certificates for the UV segment have a power limit of 25W, and the main difference lies in the power under shortwave conditions.
So, the question arises: if there are so many UV segments with capacities of 50W and 100W, why can't they be used? Am I misunderstanding something?

pjwbb

luijp That's correct, but having a certification code means that it's officially approved for you to use, but you can't actually use it at higher power levels.

luijp

pjwbb So, if I fill out the verification form, I should only be able to enter 25W, but after querying the approval code, it shows 50W and 100W, which means the verification process is essentially just accepting these values.😂

BG7XSS

luijp Yes, you can only fill in up to 25 watts.

BI3WKD

luijp The speed limit is 120 km/h. Why do some people drive at 140 km/h?

BG6QED

You need to understand that the car's speedometer shows a maximum speed of 220 km/h, but you cannot drive faster than the speed limit for that particular road. Amateur radio is primarily for technical research and experimentation; with an amateur license, you can apply for power levels exceeding 25W for communication experiments. For EME (Earth-Moon Earth) communication in the UV band, a minimum of 200W is required.

sgub

BG6QED That being said, even if I promise to use a 15W local government-approved transmitter, they still won't allow me to operate a 100W shortwave device.

BG8LID

sgub This seems to depend on location.

sgub

BG8LID Based on mood.

triint

BG8LID Not all shortwave frequencies are UV. Any frequency above 15W requires application to the Ministry of Industry and Information Technology (MIIT). Theoretically, if local authorities approve it, a shortwave radio station capable of transmitting at 100W should apply for the MIIT's "large license." This is likely due to concerns about large-scale transmissions potentially affecting international communications and national sovereignty.

Bi4KKF

In short, enthusiasts should behave responsibly.

BG5VEC

UV can be applied to request the required power, such as 500 watts.

BI3WKD

"@BG6QED": The use of "BG6QED" without authorization is illegal; if the law does not prohibit it, then it is free.

BI1ODV

When testing equipment with 50W and 100W, you can achieve passing results by adjusting to a lower power setting.

BG6QED

triint [How to write "How to report power output to MIIT today" on Bilibili - Bilibili] https://b23.tv/q2QqbSY

triint

BG6QED I think this is very valuable because it's based on a new regulation that hasn't been fully implemented yet, giving us some time to consider.😉

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