(有点长可能希望大家能看完) 现在我是高中生家里面对爱好啥的处于中立态度我也不想给家里面添很多负担初三暑假没事干闲的没事干就自己想整个中继台看网上有买中继盒子的(就准备两台对讲机就行) 就想着自己做一个花了不到一周拿两台uv5r和自己组装的锂电池(没装保护板) 组装了一台"中继"放在了30多层楼楼顶效果可想而知因为没有双工两台机子离得也近导致干扰很大只坚持了两天就扛不住了那次虽然没有那么完美但在我心里确实一个很大的成就了算是后来闲暇时间想了另一种方案用和对讲和模拟组链路实现单向/双向链路供电用自己组装的锂电充电用太阳能接受依旧用宝峰uv5r(便宜) 发射就用和对接链路到南山触发用光耦或三极管接着放在防水袋里放到楼顶这样我就不用天天拿着对讲机去爬楼顶这个想法到现在还没有实验过(没资金)**所以想问问大佬们这个想法有什么缺点或值不值得做**😀

自己实验肯定是鼓励的，但也要做好一些准备： 1. 登高作业注意安全 2. 有远控能力，至少能远程关个机 3. 确定放在楼顶不会产生其他影响，不会被物业或其他业主找麻烦，也不会造成一些频率上的干扰 4. 电池安全也要注意，该上保护板上保护板，有一些钱是必须要花的，不然最后得不偿失然后，你在设备上也要有一定考虑 1. 普通手台，散热的问题也要算上。现在夏天气温高，设备温度也会上来。 2. 普通手台k头出来的音频都是功放直出，这个上示波器就能看出来；所以相应的音频变压、隔离要做好，别音频接出来烧了一溜~~（我手机的typec芯片没法做麦克风输入就是烧掉了）~~ 3. ~~kt8900很好玩，只要注意散热别把功放炸了~~ 4. 你的链路打算用什么控制呢，单片机小盒子，还是不用的手机？在楼顶如何联网呢？这些一定要提前考虑好。如果是暑假闲着，想搞也可以搞。意义这个东西，是你自己决定的。搞这个的过程中积攒一些安全、电子、无线电相关的经验与知识，那也是很不错的。加油😉 ~~（看完了才发现楼主发文没有逗号和句号，全是空格，那确实看起来有点吃力）~~

去看看B站之前有用88S搞中继的案例搞个小双工就好~

@"BG4QBF"#p99233 首先感谢老师您用心地回复哈哈，本人不爱打标点，"文不加点"。联网一般买的和对讲自带，远控就直接用手机顶号就行吧😂 实在不行的话就只做单向的，只接受听一听也行，毕竟现在上学没时间去通联，也就闲暇时间守听守听

@"BG2EFX"#p99234 首先感谢您的回复网络链路就不必用双工了吧，现在的目标就想听听，发射就先算了吧😀

技术研究，技术研究。你可别说你那是中继台。

@"BD3RKT"#p99237 我说。。你要是搞中继的话。。

我试过把一套远程接收扔山上（绑在一棵树上），准确来说就是一个手机+一个手台，然后下去没多久手机没电了，测试白弄

@"Liridice"#p99239 明白明白 😨

@"BG5GDP"#p99242 那就加大点的电池和太阳能充电呗😀

@"BG2EFX"#p99240 行等有机会吧

Regarding network links

BD3RKT

(This is a long text, so I hope you can read through it.) Currently, I am a high school student. My family has a neutral attitude towards hobbies, and I don't want to add too much burden to the household. During my third-year summer vacation, I had nothing to do, so I decided to build a repeater myself. I saw online that you could buy repeater boxes (and just two walkie-talkies), so I thought about doing it myself. It took me less than a week to assemble two UV5R radios and a lithium battery that I built myself (without a protection board). I assembled the "repeater" and placed it on the top floor of a building with over 30 floors. The results were as expected, because there was no duplex communication, and the two radios were close together, which caused a lot of interference. I only managed to keep it running for two days before giving up. Although this attempt wasn't perfect, it was still a significant achievement in my eyes. Later, when I had free time, I thought about another plan: using a simplex/duplex link with walkie-talkies to achieve one-way/two-way communication. The power would be supplied by the lithium battery that I built myself, and charging would be done using solar energy. For receiving, I would still use the UV5R (cheap), and for transmitting, I would use the same simplex link to connect to South Mountain. Triggering would be done using an optocoupler or a transistor. Then, I would put it in a waterproof bag and place it on the top floor. This way, I wouldn't have to carry the walkie-talkies up to the top floor every day. I haven't tried this idea yet (due to lack of funds).So, I was wondering if there are any drawbacks to this idea, and whether it's worth pursuing.😀

BG4QBF

While experimentation is encouraged, it's also important to prepare accordingly:

Important safety precautions for working at heights.
It has remote control capabilities, at least allowing for remote power-off functionality.
It has been confirmed that placing it on the roof will not cause any other issues, and it will not attract attention from the property management or other residents, nor will it interfere with any frequencies.
Battery safety is also important; you need to install protective plates, and some investments are necessary to avoid potential problems in the end.

Then, you should also consider certain aspects when using the device.

Even with a standard handheld radio, you need to consider cooling issues. With the high summer temperatures, the device's temperature will also rise.
The audio output from a standard handheld radio is directly amplified. An oscilloscope can be used to verify this. Therefore, the corresponding audio transformer and isolation measures must be properly implemented to prevent damage.~~(The Type-C chip in my phone couldn't function as a microphone, and it ended up being damaged.)~~
~~The KT8900 is a lot of fun to use, but be careful not to overheat it and damage the amplifier.~~
What control mechanism are you planning to use for your link? A microcontroller-based device, or a smartphone? How will you connect to the internet from the top floor? These are important considerations.

If you have some free time during the summer break, you can definitely do it. The meaning of this is up to you to decide. In the process of doing this, you can also accumulate some experience and knowledge related to safety, electronics, and radio communication, which would be very beneficial. Good luck!😉
~~(I only realized later that the original poster had used no commas or periods, just spaces, which definitely made it difficult to read.)~~

BD3RKT

BG4QBF First, thank you, teacher, for your thoughtful response to Haha. I personally don't like using punctuation; "writing without punctuation." When connecting to the internet, I usually buy and use it with my walkie-talkie, but for remote control, I can just use my phone as a substitute.😂 If that doesn't work, we can just do one-way communication; it would also be okay to simply listen and respond. After all, there isn't enough time for regular communication with the school these days, so I have some free time to just listen and chat.

BG2EFX

Let's check out B站. There was a previous case using 88S to set up a repeater. Just need a small duplex system.

BD3RKT

BG2EFX First, thank you for your reply. Regarding the network link, we don't need to use duplexing, right? Our current goal is just to listen; let's not worry about transmitting it yet.😀

Carlos

BD3RKT Although, it is important to note that "文不加点" means the article is so good that no further additions are needed, rather than saying that a person doesn't need to use punctuation. For high school students, basic knowledge still needs to be established.

BG2EFX

BD3RKT I mean, if you're going to set up a repeater...

Liridice

Technical research, technical research. Don't tell me you're referring to a repeater station.

BD3RKT

Liridice Understood, understood. 😨

BD3RKT

BG2EFX I'll wait for an opportunity.

BG5GDP

I tried setting up a remote receiver on a hilltop (attached to a tree), consisting of a phone and a handheld device. However, shortly after I went down, the phone ran out of battery, and the test was unsuccessful.

BD3RKT

BG5GDP Alternatively, we could use a larger battery and solar charging.😀

BI4IVE

I don't think I can achieve much on my own; it would be better to finish the POC with Hytera.

FengziLeo

If you're looking for a more budget-friendly option, please check out this post of mine.
Remote control for K5/K6
You can place it in your home, with the antenna on a window, and then connect it to your computer for remote receiving and transmitting.
The advantages are that the handheld device and AIOC are very inexpensive. The disadvantage is that if you want to place it on your desk, you will need at least one computer or Raspberry Pi, as well as a network connection.

BD3RKT

FengziLeo Okay, thank you.

BD3RKT

Carlos You might be wondering why I'm using double quotes. If I didn't even know what this word means, then all these years of learning would have been wasted.😂

BI4OAE

I've forgotten the specific repeater management policies for that location, but repeaters are not allowed to use network links; small-scale operations are fine, but large-scale operations can be dangerous.😆

BH6BYT

BI4OAE From Shandong

BI4OAE

BH6BYT It seems like

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