第一次是在山上接收 ISS 的 SSTV，用的 UVK6 和 U2V2 八木，软件用的 LOOK4SAT，接收还比较成功，很高兴。结果第二次进行打星翻车了，还是刚才的配置，还提前输入了五个多普勒信道切换。目标卫星是 SO-50，刚入境只能听见规律地断续信号，本以为只是信号不好，结果到顶时（大约 60°）能听见话音了，但还是有一卡一卡地卡顿，导致只听见信号 59，但完全抄收不了呼号 “马什么梅？”“什么冬梅？” 这是为什么呢？新人 HAM 刚入坑不久，在当地的中继上通联倒是乐趣满满，到现在通联日志写了三四页，和 27 个 HAM 建立了通联，很开心，也在思考未来更换什么样的设备，采用什么玩法。这几天本想通过卫星来连上 100 周年纪念呼号，还在尝试中。。。。。

听说前几天的SO50卫星都通联成功了，不知道是我这边出了什么问题

旋转天线，尝试与极化搏斗

当时想到了，试着转了转，是不是我转得不够快ꉂ(ˊᗜˋ*)

@"BG5JKT"#p62356 通B100IARU可以去ISS试试，那个好通

@"BH6QCE"#p62369 从前两天轮值的经验来看，FM星里ISS是最挤最乱的，SO50、AO91信号差有时候抄收困难，AO123和SO124总体不错当然要是有能力来线性星CW/FT4那再好不过...RS-44 FT4效果真的良好，可惜UV全模式设备门槛还是高了些

@"BH6QCE"#p62369 好滴，ISS应该会好一些，但不是很经常高仰角过境

@"BG2GFC"#p62449 感谢GFC老师解答，原来是这样，我明白了

@"Hydroxide"#p62469 感谢分享，那我可以多尝试尝试A0123和S0124。CW的话，没有电建呀，总不能用嘴巴哔吧。。。。

@"BH6QCE"#p62369 好的凯尔希

When making a second contact on SO-50, the signal was weak. What could be causing this? I would appreciate any advice from experienced operators.

BG5JKT

The first time, I received SSTV from ISS on a mountain using UVK6 and U2V2 Yagi antennas. The software used was LOOK4SAT, and the reception was relatively successful, which made me very happy. However, the second attempt resulted in a failed pass, still using the same configuration, and I had already pre-entered multiple Doppler channel switches. The target satellite was SO-50. Initially, I could only hear intermittent signals upon entry, assuming it was due to poor signal quality. However, when I reached the top (approximately 60°), I could hear speech, but there were still occasional interruptions, resulting in a signal strength of only 59, and I couldn't copy the callsign "Ma something Mei?" or "Something Winter Mei?". Why did this happen? As a new ham radio operator, establishing communication with local repeaters was very enjoyable. I have already written several pages of log entries and established contact with 27 other hams. I am also considering what equipment to acquire and how to use it in the future. Recently, I planned to use a satellite to connect to the 100th anniversary callsign, but I am still trying...

BH6QCE

BG5JKT The B100IARU should work well on ISS; it's a good choice.

BG5JKT

I heard that the SO50 satellites were successfully connected a few days ago, but I'm not sure if there was something wrong on my end.

Liridice

Rotating antenna, attempting to engage with polarization.

BG5JKT

I suddenly realized this and tried turning it faster, but maybe I wasn't turning quickly enough. (´ᗜ `*)

Hydroxide

BH6QCE
Based on my experience with FM star, ISS was the most crowded and chaotic. Signals from SO50 and AO91 were sometimes difficult to read accurately, while overall performance of AO123 and SO124 was good.
Of course, if I had the ability to do linear star CW/FT4, that would be even better… The RS-44 FT4 really works well, but the barrier to entry for full UV mode equipment is still relatively high.

BG5JKT

BH6QCE Okay, the ISS should be better, but it won't pass at a very high angle frequently.

BG5JKT

BH6QCE Great, Kelsi!

BG2GFC

首先新手尝试SO-50确实有点冒进
U2V2天线对于接收50这样的低功率卫星已经开始显得力不从心了
K6如果刷了固件那么会削减灵敏度五信道法没有问题很不错
主要的问题是SO-50这颗卫星的老问题（极化）
卫星极化分三种线极化圆极化椭圆极化
SO-50卫星在轨道上处于自旋，并且其年老体衰（22年）
需要旋转极化抓下行信号信号的失调会导致10-20DB不等的损失

新手可以尝试ISS和ASRTU这类新发射的和发射功率较大抑或是信号很好的业余卫星
不要担心B100IARU 他听见你会呼叫您的

BG5JKT

BG2GFC Thank you, Mr. GFC, for clarifying this. I now understand.

BG5JKT

Hydroxide Thank you for sharing. That means I can try A0123 and S0124 more often. As for CW, there's no way to use it without the power supply; otherwise, it won't work.

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