这不刚买了FT891嘛，准备配个天调，在淘宝看中了两款，价格相差一两百，不知道买哪个好，有懂的老师可以给点建议吗？非常感谢! 上传不了图片，一款是ATU-100加强版，售价368；另一款是AT-100M Pro，售价550；买哪个好啊 -

先问问自己为什么要买，如果说不清楚，说明你不需要天调我买了，一直在家吃灰

@"BG4IJK"#p77140 自己买的器材，组装的正V天线，不会调天线对应的频率

@"BI7AED"#p77141 你这是饮鸩止渴啊

天调不能解决你的核心问题，不如搞个NanoVNA

@"BI7AED"#p77141 OK，你不需要天调，你需要NanoVNA

@"BH7HQT"#p77152 真不怕你笑话，我还搞不清天调跟网分，哪个更适合我，到底有啥用。

网分的话就是能帮你分析下现在你的天线是长了还是短了，需要怎么调整下，天调就是管他三七二十一呢直接给你把驻波拉下来让你直接用这样的好处就是能非常好的匹配你的发射部分坏处就是效率会变低所以其实关键还是要网分来找一下谐振点这样才能最大化的让天线运行在完美的状态下通讯距离和质量也会提高

@"BI7AED"#p77155 天调——天线调谐器，用于匹配运行状态不佳的天线网分——网络分析仪，测量天线运行参数

@"BI7AED"#p77155 网分是个仪表，帮你调参数的，要自己动手把天线调整好天调是个开关，用来骗电台的，自动让天线看起来感觉好

你需要网分，天调只是在“骗”电台，即便驻波调下来天线效率也不会变高。

Questions about Tian Dao

BI7AED

I just bought an FT891, and I'm planning to get a handheld transceiver. I saw two models on Taobao that caught my eye, with price differences of around 200 yuan. I don't know which one is better. Could someone who knows give me some advice? Thank you very much!
I can't upload the images. One is the ATU-100 Enhanced version, priced at 368; and the other is the AT-100M Pro, priced at 550. Which one should I buy?

BG4IJK

First, ask yourself why you want to buy it. If you can't figure out the reason, then you don't need "Tian Die."

I bought it and have been eating it at home.

BI7AED

BG4IJK The antenna I purchased myself, which was assembled, and I cannot adjust it to the correct frequency.

BI1NIZ

BI7AED This is like drinking poison to cure a disease.

BG4IJK

BI7AED Okay, you don't need to rely on atmospheric conditions; you need a NanoVNA.

BA7NNC-JOE

BI7AED If you're using a standard V-antenna, what else do you need to adjust? Just ensure the lengths are symmetrical, and it will naturally resonate.

My My Day also uses gray ash, just like what the person upstairs said. It's best to buy Nanovna right away; it's the most practical option.

BH7HQT

A SkyTune won't solve your core problem; instead, consider getting a NanoVNA.

BI7AED

BH7HQT I'm not worried about you making fun of me; I still don't understand whether it's better to use the "Tian Dao" system or the "Net Division" system, and what their actual benefits are.

BI7AED

BH7HQT Thank you very much! I bought it.

BI7AED

BG4IJK I bought it, thank you!

BH7HQT

BI7AED
Tian Dao – Antenna Tuner, used to match antennas with poor operating status.
Network analyzer – measures antenna operating parameters

BG4IJK

BI7AED
The network splitter is a device that helps you adjust parameters. You need to manually adjust the antenna.
"Skywave" is a switch used to trick the radio, automatically making the antenna appear to be in good condition.

BI1SPD

If you use a balun, it can help you determine whether your antenna is too long or too short and how to adjust it. A balun simply brings the antenna impedance down to a level that's compatible with the transmitter. The advantage of using a balun is that it provides excellent matching for your transmitting section. However, this also reduces efficiency. Therefore, the key is to use a balun to find the resonant point. This allows the antenna to operate at its optimal state, which improves communication distance and quality.

BI7AED

BI1SPD Thank you for your insightful analysis. I believe that "netting" is exactly what I need.

F0rens1c

BH7HQT 话说天线相同情况下（比如在要用的频率驻波比1.5）【A 用天调拉到驻波比1.0】和【B 直接发射】，A效率变低，B除去损耗，两者实际效率还一样吗

BG4IJK

BG4IJK Additional note: The network division settings are actually correct, while the manual settings are incorrect.

BI7AED

BG4IJK This analogy is very vivid and easy to understand, thank you! Also, I bought it online.

BD3QYZ

You need to use a frequency divider; the "trick" with AM only works by fooling the radio, and even if you tune the resonant frequency, the antenna's efficiency won't necessarily increase.