要求145.8mhz，FM调频模式，是用的uvk6，频率145.8mhz，设置里调制模式选的FM，没有收到图像，是我的设置错误么？还是受要用收音机的FM调频

静躁要打到0，其次如果你没接八木的话要把手台与手机垂直放置（如下图，画的不好凑合看吧😭），再就是找个没遮挡的地方，其它好像也没什么了 [upl-image-preview url=https://storage.hamcq.cn/2024-11-11/1731364394-671178-screenshot-2024-11-12-06-32-45-428-commiuinotes-edit.jpg]

@"BG4JGB"#p40453 垂直么？我以为要跟着手机把手台对准卫星，这是什么原理

@"BG4JGB"#p40453 不应该平行吗

卫星追踪软件不一样吧，两个卫星追踪软件，一个是垂直，一个是平行，Look4sat是平行。

其他设置没问题，UVK6原天线的话，接受信号水平方向增益更好，所以你要把天线垂直卫星方向，即垂直于手机指向，昨晚在城区接受也没成功，应该是干扰太多。再就是想要抵消多普勒效应的话，需要算好频率，信号下来不会是在145.8MHz，我这边大概是145.796MHz。

手台的仰角是由国际空间站的仰角确定，不能单纯的水平或垂直。接收时手台应打开监听或将静噪等级调至为0 国际空间站的信号很强，原装天线接收完全没有问题。

静噪开0或者开监听，不用管手机啥的，记住原装天线【理论上天线侧面始终对着ISS】，但是不绝对，可能手动要旋转下，能收的

@"BI2WD"#p40454 之前我也是平行放置的，一点信号没收到，后来有人告诉我这么垂直着放，同样的位置接收效果就好很多

@"troilus"#p40471 好的，谢谢

Regarding receiving SSTV images from the ISS space station

BI2WD

I need a 145.8 MHz FM transceiver, using the UVK6. The frequency is set to 145.8 MHz, and I've selected "FM" as the modulation mode in the settings. However, I'm not receiving any images. Is this due to an error in my settings? Or could it be that the radio requires an FM transceiver for operation?

BG5ELQ

Not configured incorrectly.

BG4JGB

You need to get the signal strength down to 0, and if you're not using a Yagi antenna, you should place your handheld radio vertically next to your phone (as shown in the diagram – please bear with the rough drawing).😭), and also find a place where there's no obstruction; otherwise, it seems like nothing else matters.

BI2WD

BG4JGB Is it vertical? I thought you were supposed to hold the radio up and point it at the satellite, what's the principle behind that?

BG4JGB

BI2WD Previously, I was placed horizontally, and I didn't receive any signal. However, someone told me that placing it vertically in the same location significantly improved the reception.

BA7NNC-JOE

BI2WD GP antenna: Imagine the signal radiating outwards from a central point, like a lollipop or donut shape, with the antenna acting as the core. This way, you can better understand how GP antennas work. Unlike a laser pointer, which directs the beam towards the target, a GP antenna doesn't have a focused endpoint.

BD6ITP-Doikk

Satellite tracking software differs; there are two types of satellite tracking software, one vertical and one parallel. Look4sat is the parallel type.

BG4JUG

The other settings are fine. Regarding the UVK6 antenna, it provides better signal gain in the horizontal direction, so you should orient the antenna vertically, i.e., perpendicular to the direction your phone is pointing. I also tried receiving signals last night in the city center, but without success; this was likely due to excessive interference. Furthermore, if you want to compensate for the Doppler effect, you need to calculate the frequency accurately. The signal should not be at 145.8MHz; my current estimate is around 145.796MHz.

BI4MTI

The hand-held antenna's angle of elevation must be determined based on the International Space Station's angle of elevation, and cannot simply be horizontal or vertical.
When receiving, the handheld radio should be set to listen or have its noise reduction level set to 0.
The signal from the International Space Station is very strong, and the original antenna receives it perfectly.

BI2WD

BI4MTI Thank you.

troilus

Turn on the noise reduction or listen mode. Don't worry about your phone; remember that the original antenna (theoretically, the antenna side should always face ISS) but this isn't absolute, you might need to manually adjust it to get a signal.

BI2WD

troilus Okay, thank you.

BI2WD

troilus After setting the noise level to 0, I started hearing unwanted sounds constantly. It was originally at a 4th-level setting.

BG5BLI

The antenna needs to be oriented horizontally to receive satellite signals properly.

BD8ENX

BA7NNC-JOE That's how it works: polarization also changes.

BG0EFP

BA7NNC-JOE 让我想起和同学了，让我们把天线掰直。

BG4JGB

BI2WD The key is to maintain a constant level of noise, so that even weak signals can be received. If you set the noise reduction too high, some signals may not be able to open. In my daily use of local communication, I always set the noise reduction to 1, which is much higher than 4.

BG2GVP

BI2WD The K6 can be used for monitoring; no need to set the noise reduction to 0; typically, side button 1 is the default for monitoring.

troilus

BI2WD The noise does not interfere; once the signal arrives, the noise automatically disappears.

bg5axs

When using satellite communication, the signal is usually weak, so it's not possible to turn on the noise reduction feature on your radio.

BH4FYL

I'm inquiring about submitting results. After submitting, I ended up on a blank page: https://ariss-usa.org/ARISS_SSTV/certificate.php. Does this indicate that the submission was successful?

BI2WD

BH4FYL 不会转到空白页，成功又很大一段文字，图片太大会显示一句很短的英文

闽ICP备2021006864号-7

闽公网安备35020602002794号互联网举报中心

用户协议隐私政策社区规范积分规则中继规则转载须知
更新日志联系我们常见问题友情链接运营报告赞助

浩奇科技（厦门）有限公司

是无线电，把我们联系在一起