感觉5w的手台打星吃力+直频打不动，中继信号时好时坏，目前看中了泉益通kt5000，请问各位有没有建议也想问问各位这种车台怎么带出去用

说句正确的废话：“上执照，，遵守相关法律法规的情况下，爱咋用咋用”

可以买50w然后申报25w吗？比如协谷90s用90n来申报，反正都是网上办的。

@"BA4TAY"#p84613 原则上应该不存在问题，设备核准证并不看设备发射功率，而有核准的机子上执照也只看核准。至于功率是否符合操作证的要求，有些地方需要提交一个承诺书，简单写几句“承诺使用25W以下的功率发射”啥的就行。

为何不买威诺VR-N7600 。专门为打卫星提供多普勒，功率也很大。

@"BI4AVZ"#p84603 搞了泉益通7900，感觉还可以，不过没出去过。。。

@"[未知用户]"#p85269 对我来说太贵了一些，大学生生活费有限。

@"BH2RMX"#p85258 对我来说太贵了一些，大学生生活费有限.

@"BG2EFX"#p84605 这个对我来说价格也相当高昂了，几乎就是快一个月生活费

你打算多少w打星，思考🤔

I am looking to purchase a 25W UV curing machine.

BI4AVZ

I find that using a 5W handheld for satellite communication is difficult, and I can't get any signal with direct-to-satellite operation. The repeater signal is inconsistent. Currently, I am considering the KT5000 from Quanyitong. Do you have any recommendations?
I also wanted to ask how you guys typically transport these types of vehicles.

BI1PMS

BI4AVZ I've tried the QY7900, and I think it's decent, but I haven't used it outside yet.

BG2EFX

DM9100.

BI4AVZ

BG2EFX This is quite expensive for me; it's almost equivalent to a month's worth of living expenses.

BG8LGP

"To put it simply and accurately: 'Obey all relevant laws and regulations, and use whatever methods are appropriate.'"

BA4TAY

Is it possible to buy 50,000 yuan and declare 25,000 yuan? For example, if I use a XieGu 90s with a 90N frequency when declaring, it doesn't matter because everything is done online.

BH9DWE

BA4TAY In principle, there should be no problems. The equipment approval certificate does not require the device to have a specific transmission power; instead, devices with an approval simply need to show proof of approval. As for whether the power meets the requirements of the operating license, some places require submitting a simple statement such as "I promise to use a power of 25W or less."

BH2RMX

Why not buy the Winno VR-N7600? It's specifically designed for satellite use and provides a high power output.

BI4AVZ

BH2RMX It's a bit too expensive for me; my student budget is limited.

Shiro

How many stars are you planning to buy?🤔

BI1TMQ-AK6MZ

Alternatively, we could consider replacing the existing antenna and tracking mount with a higher-gain one.🧐

BH7HQT

It's more effective to change location and antenna than to simply increase power.
To move the chassis, a battery of approximately 12V is required. When using the GP antenna, a ground connection is needed. However, this does not apply when using a Yagi or DP antenna.

BG2GFC

The arms race mentality has decimated generations of satellite personnel.
Currently, the simplest and most common configuration is KT8900-U7V4. Thanks to GH, you can now get this configuration for around $500. However, the 8900 is very prone to overheating, so if your battery drains quickly, it will likely fail.
If you really have no money, I recommend buying the large antenna U7V4 first to ensure continuous downward signal. If that doesn't work, find a good location, and then focus on practicing. I also have a handheld radio with a GX8500, which has 20W of UV output, but I don't recommend it right now because your money might not be enough to support this setup.

Regarding the issues with repeaters and direct-to-frequency communication, I can confidently say that the problem lies with your location and antenna.
To illustrate, I can give an example: the evening and late night hours are generally the most favorable times for U-band propagation, and I live in a location where the repeater is over 100 km away.
When I hold the handheld device, I can't properly cut off the signal. However, when I place the antenna on a conductive metal fence or other metal object, the signal strength is 59+.
This likely means that if you are unable to connect to a repeater, it's probably due to issues with your antenna and location.

BI4AVZ

BG2GFC First, I'm in Shanghai and there are no U-band repeaters nearby either, and they are quite far away.
The Yagi antenna for U7V4 is already available. I checked out the 8900 MHz band and it seems similar to the 5000 MHz band that I was looking at. Please provide some information (.).

BG2GFC

BI4AVZ
The 8900 is a popular model, and if it breaks down, you can easily find someone to repair it. Plus, the parts are relatively inexpensive.
I rarely see people using the 5000 device. Why do you want to buy it?

ping

BI4AVZ 你在上海哪里？打的是AA中继吗？

HHXiangge

For my everyday direct-to-repeater or repeater-to-repeater communications, I typically use the ZASTONE D9000, operating at 25 watts with a license.
If we're talking about "Star," I think it would be incredibly frustrating. The idea of mobilizing tens of thousands, even hundreds of thousands of people for a military competition like that...😡

BG2GFC

HHXiangge
The satellites are subjected to a massive load solely due to human activity.
With 9 radio stations, each requiring a QSO with another station, and then removing any duplicate QSOs.
This also requires approximately 9 x 8 ÷ 2, which equals 36 times.
Assuming a 10-second occupation time, which equates to 360 seconds or 6 minutes, this seems quite ample, doesn't it?
However, if QRO interference is introduced through a faulty connection, some individuals may intentionally interfere with specific frequencies. This could create significant problems.

Starting from now, normal amateur satellites are included. There are very few instances of less than 9 people passing through; and if some individuals are not aware or do not descend, then...
Unfortunately, we have to go ahead with it.😂

BI3QAC

I used the KT-5000 from Quan Yi Tong, sold it. The machine is good; you can find reviews online for under 25,000 yuan. Later, I sold it on Xianyu and bought the HTM-689 from Hong Kai De, but that one was 50,000 yuan. I already obtained a license locally.
Actually, the Hanke DM9100 is also a good option. It supports DMR and analog dual-mode operation with a 25W output power, and it has a relatively compact design.
The Wouxun radios are also good; users have reported that they have good quality and are easy to use.
Please describe the functional advantages of the HTM-689 and DM9100 devices:

The HTM-689 can be equipped with Bluetooth, using a Bluetooth microphone; the HTM-689 is a 50W unit and has amateur radio certification; the HTM-689 includes repeater functionality; the HTM-689 includes shortwave broadcast reception (note: this is for receiving broadcasts, not a shortwave receiver).
2. The DM-9100 has a compact design and uses a Bluetooth module, allowing direct use with a Bluetooth microphone. The DM-9100 is a DMR+analog dual-mode radio, with a power output of 25W.

BH7HQT

BG2GFC I feel like FM Star has left, and that the others are no longer something I can easily engage with or enjoy.

BA4QBK

I've been watching you all for a long time, and I have to say, it's impressive.

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