ISS 这次SSTV活动时长挺久，不过受我这边位置影响，过境高度合适的不多，连夜用4方铜线、扫把杆和美纹纸做了个MOXON天线，抄收了4张图片，效果很好，分享交流下另外昨天刚知道还有一个UMKA卫星的SSTV活动，连夜抄收也没成功，昨天两颗3次过境，凌晨的过境脑子不清醒，竟然搞混了频率和解码模式，导致UMKA的图像什么也没收到。 [upl-image-preview url=https://storage.hamcq.cn/2024-11-18/1731889515-671906-iss.jpg]

有点精美，有没有那位大神详细拆分一下怎么打卫星啊，也想玩这个

@"BI9CAP"#p41594 西北的汉子冬天不适合，，，，太冷了

@"BI4IVE"#p41595 还有工夫拉呱，我的八木呢，都耽误打星了

请问这颗卫星叫啥名字？

@"BD7PXV"#p41634 图片抄收成功的是国际空间站，另一个没吵到的是UMKA-1(RS40S)

@"BG4JUG"#p41710 感谢楼主回答，我昨晚接收一下，没收到信号，发小红书，有人叫我把降噪设为0，这是正确的吗？请问楼主有没有完整的教程，从知道活动，（云端卫星微信小程序）知道空间站的名称，以及连接该星的频率（FM模式），然后等着该星过境就可以？本人坐标北回归线左右的广州，我看小红书分享的帖子好像很少低纬度的？A证刚考，本人小白，特此求教[upl-image-preview url=https://storage.hamcq.cn/2024-11-19/1731982632-925414-20241119101557.jpg]

@"BD7PXV"#p41738 我也是刚学习，大家一起交流。你这个图里我一般用第三个解码，第五个搜过境。第五个和第七个我用的有5分钟的时差。SSTV活动我目前也没有准确的信息源，一般是通过各无线电公众号发布的信息掌握，发布时会公布卫星名、活动时段、发射频率、解码等信息。收信号时候，静躁设置为0或者开启监听都可以，用losehu的固件可以刷星历，会自动补偿多普勒效应，你图上第5个软件卫星过境时界面也会实时更新频率，可以跟着手动调整。

@"BI4IRZ"#p41616 啥八木这个坑找董事长 @"Bi4KKF"#2521 哈哈哈

@"BD7PXV"#p41738 是的我一般会将静噪设置为 0.这样即使微弱信号也能感知到。有时候会需要旋转天线调整极化方向会收到更好的效果。另外我除了用云端还会用另一个，HAM 个人工具，能够看到最近是否有人通联，还有自动录音。 [upl-image-preview url=https://storage.hamcq.cn/2024-11-23/1732363213-707531-img-4084.jpg]

SSTV reception in this round

BG4JUG

The SSTV activity on the ISS lasted quite a while. However, due to my location, there weren't many opportunities for optimal passing heights. I built a MOXON antenna using four copper wires, a broom handle, and waxed paper, and successfully received and transmitted 4 images. The results were excellent, and I would like to share and discuss this experience.
Additionally, yesterday I just learned about another UMKA satellite SSTV activity. Although I tried to receive it late at night, I was unsuccessful. The two satellites passed overhead twice yesterday, and the transmissions during the early morning were unclear due to lack of sleep, resulting in me confusing the frequencies and decoding modes, which caused me to miss the UMKA images entirely.

BI9CAP

It looks quite nice. Could someone with more experience please provide a detailed explanation of how to operate it, specifically for targeting satellites? I'd also like to try this out.

BI4IVE

BI9CAP Guys from the northwest are not suitable for winter; it's too cold.

BI4IRZ

BI4IVE There wasn't enough time to chat; my Yagi antenna was also getting in the way of my observing.

BI4IVE

BI4IRZ Where can I find the chairman to discuss this "Yagi antenna" issue? @Bi4KKF Haha

BD7PXV

What is the name of this satellite?

BG4JUG

BD7PXV The successful image acquisition was achieved by the International Space Station; the other one, UMKA-1, did not experience any interference.(RS40S)

BG4LZP

Excellent!

BD7PXV

BG4JUG Thank you for your reply. I received it last night, but didn't receive any signal. Someone on Little Red Book suggested setting the noise reduction to 0. Is this correct? Would you have a complete tutorial that starts with knowing about the event (the WeChat mini program for cloud satellites), knowing the name of the space station, and connecting to the frequency of the star (FM mode), then waiting for the star to pass by? I'm located near the Tropic of Cancer in Guangzhou. It seems like there are very few posts on Little Red Book about low latitudes. I just got my A license, so I'm a beginner. I would appreciate your guidance.

BG4JUG

BD7PXV I am also a beginner, and I would like to learn from everyone. For the image you provided, I usually use the third decoder and the fifth search function. The fifth and seventh functions have a 5-minute time difference. Currently, I don't have any reliable sources of information for SSTV activities; I mainly obtain information through posts on various radio social media accounts. When publishing, they will announce the satellite name, activity period, transmission frequency, and decoding information. When receiving signals, you can set the noise level to 0 or enable listening mode. Using the "losehu" firmware, you can update the star chart, which automatically compensates for the Doppler effect. The fifth software in your image also updates the frequency in real-time when a satellite passes by, allowing you to manually adjust it accordingly.

bg5axs

BD7PXV Yes, I usually set the noise reduction to 0. This allows me to detect even very weak signals.
Sometimes, rotating the antenna to adjust the polarization direction can result in a better signal reception.
Additionally, I also use another tool called HAM Personal Tool, which allows me to see if anyone has recently communicated and provides automatic recording.

BD7PXV

bg5axs Yes, I've also tried this app out. How does the automatic recording function work?

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