手头有个泉盛K5、宝峰5R经典款、联畅UV98，发现只要按下车钥匙按钮，不管机器频率设置成多少，5R和UV98都会被干扰，K5不会想问下各位群友：其他泉州机器情况如何，比方说宝峰升级款和森海克斯8800，以及，其他地方产的机器有没有这种现象

便宜的机器屏蔽不够都会被干扰，只是不同机器被干扰的频率不同而已。

@"BG4IJK"#p16420 反过来想，是不是按下5r的ptt，车钥匙会被干扰呢？

@"SilentYANG"#p16428 uv98价格600多，照样被干扰😂

你买个D75一样被干扰。。因为现在很多那个钥匙他本来就是433的。。人家在433合理发射，你设备只要他没坏他就就肯定能收到啊

刚刚又测试了一下， - 车钥匙：中心频率大约434.411MHz，杂散较大 - 电台：泉盛K5、宝峰5R、联畅UV98、威诺6600、海能达HP780（为什么只有这几个机器？因为其他的还没垫😂）按住车钥匙按钮之后： - 5R、UV98：不管频率多少（U段），机器都会叫，但是把频率设置到很大的时候，例如465MHz，UV98被干扰的概率小一些。另外两个信道都是V段时不会叫。 - K5、HP780、6600：静噪为0时，将频率设置为434.411，能听到清晰声音；设置为较远一点频率，例如434.7，能收到杂散信号但是比较弱；静噪大于等于1时，无论频率多少，都听不到车钥匙声音。

我觉得这个还得看设备的静噪阈值，因为我的自由通878也经常被显示器驱动电路产生的杂散干扰，频点在438.5上

我试过我K6会干扰到鼠标，电脑会一直读取和断开

手里的 k6 在 430-440 段发射，会影响 aoc 的显示器，自动打开设置菜单。。。。 70dr 就不会。。。。

@"hliang_BH2WDQ"#p18168 HHHHHHH

How many of the QZ-90 air defense systems can be interfered with by car keys and roller shutters?

BG4IJK

I have a QuanSheng K5, a BaoFeng 5R Classic, and a UV98. I've found that when I press the car key button, both the 5R and the UV98 are affected by interference, regardless of the frequency setting, but the K5 is not.

I would like to ask all members of this group:
What are the other machine situations in Quanzhou, for example, BaoFeng's upgraded models and Senhaix 8800?
And, do other machines produced in different locations also exhibit this phenomenon?

BH3XZT

BG4IJK On the other hand, could pressing the 5R button on the key fob interfere with the car's ignition system?

SilentYANG

Cheap machines are easily interfered with, and their shielding effectiveness varies depending on the frequency of interference.

BG4IJK

SilentYANG The UV98's price was over 600, but it was still interfered with.😂

Kidio

BH3XZT Verified to work

BG2EFX

You will also experience interference if you buy a D75.
Because many of those keys are actually 433 MHz now.
If the transmitter is operating within the acceptable range (433 MHz), and your device isn't malfunctioning, it should definitely be able to receive the signal.

BG4IJK

I just tested it again.

Car key: Center frequency approximately 434.411 MHz, with significant scattering.
Radio: QuanSheng K5, BaoFeng 5R, Linkong UV98, Weinone 6600, Hytera HP780 (Why only these models? Because the others haven't been tested yet)😂）

After pressing the car key button:

5R, UV98: Regardless of the frequency (U-band), the device will transmit, but when the frequency is set to a higher value, such as 465MHz, the probability of UV98 being interfered with is reduced. The other two channels will not transmit on V-band frequencies.
K5, HP780, 6600: When the noise level is 0, setting the frequency to 434.411 allows you to hear clear sound; when set to a slightly higher frequency, such as 434.7, you can receive weak stray signals; however, when the noise level is greater than or equal to 1, regardless of the frequency, you cannot hear the car key sound.

BG2EWI

I think it depends on the device's noise threshold; my Freecom 878 is often affected by interference from the display driver circuit, with frequencies around 438.5 Hz.

BG5CQF

I tried turning off my K6, but it still interfered with the mouse, and the computer kept disconnecting.

hliang_BH2WDQ

The K6 operating at 430-440 MHz interferes with the AOC display, automatically opening the settings menu.
70dr will not...

KyrieIrving

hliang_BH2WDQ HHHHHHH

BI4MIG

hliang_BH2WDQ
When my K6 is transmitting at 5W, it can only cause Philips monitors to display artifacts, but not to the point of opening the settings menu.

EXCT

The car key emits a 433 MHz signal, which raises background noise around 433 MHz and exceeds the device's noise threshold, triggering it.

BG2EFX

In fact, all machines have that; one of its operating frequencies is 433.

BI1SFC

When using a radio transmitter near electronic devices, especially power products, it's important to be aware of potential interference.

BA4TVY

BI1SFC When I turn on a repeater in my dorm room, my LED lamp automatically turns off.

BI1SFC

BA4TVY That's a reminder to go to sleep now.

BA4TVY

BI1SFC Haha

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