rt，本人天津市某大学学生，因不慎将ham身份暴露给导员（bushi），被找来办活动😅 学校想搞一个类似“红色电台”的活动，其中一个部分希望能够让同学们动手制作一个“小电台”，收发CW（老师说摩斯码比较有感觉🤔），发点“爱国三问”之类的内容体验一下🤔 考虑到学校要拿去宣发，想请教一下有没有什么完全合法的途径实现上述功能已有条件：学校里能凑出几个ham（不过在业余段进行应该是违法的吧） QTH津南区某宝上一众套件也不知是否合法不会最后变成2.4g无线鼠标吧😭😭

公众号刚发，来跟友台们复命哈😋 [来看公众号](https://mp.weixin.qq.com/s/DcvaeTNybAjCacdKQbDlxw) 结论是象征意义大于实际意义，不过也算是跟同学们做一点宣传吧😋😋感谢大家的idea虽然没回复但是都对我有不少启发😋大家玩的还是挺高兴的 [upl-image-preview uuid=fa69a062-b56f-484b-a6a0-8478f9095c09 url=https://storage.hamcq.cn/2025-12-24/1766576317-596931-mmexport1766576061664.jpg alt={TEXT?}]

供lz参考：https://mp.weixin.qq.com/s/veM3BxYsroEXBaSCVzb3Qg

@"BG5CVB"#p83920 这事的难点是要面向普通同学😭学校还希望做个能收发的东西出来😭😭

@"BI3BTM"#p83922 PDD上有那个PIXIE那个CW套件，焊一个不怎么难，至于普通同学...... 对不起，不知道（

@"BI3BTM"#p83922 至于发射有关问题，好说，叫一下假负载大人

蜂鸣器和接触式开关？（要求做收发的有点困难吧，但是拿个电键、电台和假负载体验体验还是可以的

@"FengziLeo"#p83929 我个人感觉真不如实操或者通联演示，蜂鸣器和小开关明眼人都看得出来要是换我当场就没心情了（

@"FengziLeo"#p83929 要说体验体验的话最后的解决方案可以有2.4g😅完全合规😅也能有声也能传😅但是给我感觉就是无线鼠标套马甲

@"BG2GFC"#p83930 这倒确实我感觉他们导员的要求有点离谱

@"BI3BTM"#p83932 @"BI3BTM"#p83932 hhhh 那还是整个自动键和手键连上电台，让大家体验体验吧，让现场制作我感觉这个还是有点困难

Legal and regulatory consultation regarding radio science popularization activities.

BH2VSQ

BI4OAE Not a license-free option.
The complete requirements are: 409 fixed channel points, 0.5W power, and non-removable antenna.

BG5VMD

BH7JUO

The supervisor isn't concerned about the specific MHZ or GHZ frequencies being used. The purpose of this activity is purely for ZZ tasks, and the form is more important than the actual results. As long as the activity is well-organized and completed, the supervisor won't care whether it involves a wireless mouse or a radio transmitter, or whether it complies with regulations. Therefore, the original poster should focus on using the simplest and most convenient wireless method possible, while minimizing the risk of conflicts with regulations.

BG4IJK

BH7JUO is right. If you want to help your supervisor get things done effectively, it's best to find a simple way to complete the task.

Alternatively, we can use the approach of BH7JUO. If you don't want to cooperate with the supervisor, then emphasize the radio regulations and laws. Improper operation will lead to enforcement by authorities, non-compliant homemade equipment, and online dissemination, which could result in schools being reported by other amateur radio operators, causing more trouble for the school. For example, there was a case where someone built a box themselves and it was detected by the radio monitoring station, resulting in the confiscation of the equipment and a fine of 5000. However, if you only let me do things without helping me address the legal and compliance issues, that's not fair.

BH2VZC

Who is the supervisor? I don't know them, and I can't just start charging fees or prevent them from attending school.
I'm just a complete amateur when it comes to two-way radios. What are you talking about? Morse code? That's something spies use, isn't it? I don't understand any of it.

Liridice

First, I would explain the regulations to the teacher. Then, I suggest that instead of building the circuit boards, students could assemble their own simple circuits using pre-made kits available on Taobao. For sending and receiving, we could use HAM classmate's license-held radio, connect a homemade switch, and if CW mode is not supported, FM can also be used as a workaround.

5Breeze

You could try using infrared instead of radio; it should work perfectly with single transmitter and multiple receivers.

BI7KGD

Don't overcomplicate things; if it can make a sound and flash, it's CW (continuous wave) signaling – that's the result.
The simplest solution is to use audio decoding. Directly connecting with a cable is better than using radio.
Furthermore, the oldest radio was actually a cable that had been disconnected.
The wireless transmission aspect is the least important.

BH7JUO

I have a suggestion: the simplest solution involves one switch, one battery, and one buzzer connected together. Two participants sit facing each other, with one person transmitting and the other receiving. They can also be separated slightly to achieve this effect. This approach is simple but retains a sense of ceremony, while avoiding any compliance issues. I would like to discuss this proposal with my supervisor to see what he thinks. Regarding the event packaging, we should collaborate with the student union to come up with ideas. The atmosphere can be made attractive, but technical aspects should be kept as simple as possible.

BloodBlade

It doesn't necessarily have to be limited to the amateur frequency band; the ISM (Industrial, Scientific and Medical) band includes frequencies other than 2.4 GHz, such as:

13553 kHz - 13567 kHz, 14 kHz bandwidth
26957 kHz - 27283 kHz, 326 kHz bandwidth
40.66 MHz - 40.7 MHz, 0.04 MHz bandwidth

These three unlicensed frequency bands also have power limitations.
The simple CW kit I'm referring to, which uses a crystal oscillator to determine the frequency, needs to be adjusted so that the signal falls within those specific frequencies.

In addition, you can also look at the categories of general-purpose devices and wireless microphone devices in the ultra-low power short-range frequency band.

ba7kta

First, I need to assure the supervisor that the project is complex and involves a large workload, but we will do our best to complete it. Then, we can have two CWO demonstrate.😂

BI4MPY

First, we can explain the legal risks to relevant teachers in the school. Secondly, should we consider making a Morse code transmitter that only emits sound?

BI9CBD

If all that's needed is for it to transmit, I think we could build a QRP transmitter without soldering, using a receiver. Refer to Mr. Rong's instructions. CPK-4 QRPP CW Transmitter Construction 14:20 Here, you don't need to go around the magnetic loop. You can simulate the transmission process. For receiving, any frequency like 7023 or 14023 should work; it's likely that you will receive something.

The construction is quite simple, and the schematic diagram is not difficult to understand.

BI3TTR

BI3BTM Learning Morse code requires a significant amount of time and effort, even for experienced amateur radio operators. If it's just for school activities, I find the difficulty level to be quite high.

BI3BTM

公众号刚发，来跟友台们复命哈😋
来看公众号
结论是象征意义大于实际意义，不过也算是跟同学们做一点宣传吧😋😋感谢大家的idea虽然没回复但是都对我有不少启发😋大家玩的还是挺高兴的

BI3BXB

BI3BTM Just by looking at the main post's "Three Questions About Patriotism," it was already clear that the school was...🤭

BI3BTM

BI3BXB Bro!

BI3BXB

BI3BTM I also saw that HamCQ has republished it. By the way, are there still any electronics clubs at the school now? There used to be one when I was in school twenty years ago...

BI1FJK

My opinion is that we should wait for the authorities to investigate and take action, rather than trying to handle it ourselves. It's important to let the school administration deal with the situation properly.

Ethan

Okay, if the organizers can get the teachers to join, we can establish a club station.🤔

BI3BTM

Ethan 现在正在努力推进中🙏

BI3BTM

BI3BXB
老学长好！😆
班里团支部自己办着玩的小活动竟然被转发了吗😭😭有点如坐针毡了😭😭
多隆现在还是十分火热🔥毕竟是跟电赛智能车这种跟成绩挂钩的竞赛强绑定，缺人是不可能缺人的🤔

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