I recently purchased a QuanSheng UVK6, but when I tried to connect with another device using 通联, the other device reported signal strength of 29 or 39. What could be the reason for this?

BG4KKN

如题，各位大佬好，我的设备是泉盛的uvk6，原装天线，高功率发射，高度10楼，通联过程中友台反馈背噪很大，信号29/39差不多，屋里位置都走了个遍，打开窗户站窗边甚至站到楼顶信号也没有什么改善，请问这种情况一般是什么原因会导致，换根天线会好一点吗，或者是否有必要换天线呢，谢谢各位大佬🙏🏻

BI4MTI

BG4KKN 这个问题不确定因素太多了，让我开语音说这个问题我都可以说半个小时。😆

第一点环境所致，这个是我猜测的主要原因。你可以去户外较高的地方测试，比如山顶，高楼楼顶或空旷场地测试。
第二点对方环境所致，在UV段传播是要双方环境都要很好，这个就要看你抄收对方信号如何，如果信号对等那问题倒不是很大。
如果你抄收对方很清晰，你的信号到对方那离不好，这里又是两点，1.对方所处环境不好，大部分在城市，强信号穿透墙体，弱信号到达你的天线，所以你可以听到他的信号，你的强信号在传播损耗后弱信号无法或极少的穿透墙体到达对方天线导致对方抄收信号不好。2.你或对方一方天线高度不足或极化方向不对所致，也会导致可能有一方效果不好。
第三点设备原因所致，如果你长时间高驻波发射，导致功放管损坏或馈线接头开焊。输出功率不足导致对方抄收不清楚。这个可能性很小不是不可能，建议用综测或功率计测试一下电台各方面参数。

我所说的只是通联效果不佳的冰山一角，无线电就是无限挑战。

BG8JVA

First, you need to confirm what signal you are receiving. If you receive the other person's signal as 29/39, it indicates that your location is quite far away. If you receive the other person's signal as 59, then you need to investigate further, as this could be related to your environment and not necessarily a device issue.

BG4KKN

BG8JVA Thank you very much.🤝I'm using the local repeater, and I can hear them at a signal strength of 59. They can hear me at 39. Also, when other stations use repeaters to communicate with each other, the signal reports reach 59. It might be a problem on my end. I'll try again later tonight after finding a better location.

BI4MTI

The other party has been consistently providing you with S9 signal strength reports, which I suspect they are using a repeater to transmit. These reports indicate the signal strength of the repeater itself. However, this only confirms that the signal from the repeater to the other party is within acceptable limits. I recommend that you also test the actual signal strength with another amateur radio operator (or yourself) using direct frequency communication to see how it compares.

BG4KKN

BI4MTI Thank you, sir. Your explanation was very detailed and helpful. I will try these suggestions first. It seems I still lack a good understanding of the underlying theory. Thank you for your answer. 73 to you. 🌹

BI4MTI

Also, if you're using a repeater to communicate, measure the total distance from your location to the repeater and from the repeater to the other party using a map like Gaode Map. This is especially important in rural areas.>=50 km within city>=30 km, voice quality should be clear for distances of 2-3 miles (1-1.5 km). (A location within a city is considered to be within the city.)
If you have direct line-of-sight communication, the straight-line distance between you and the other person, in a rural area.>=30 km within the city>=15 km – Generally, you won't be able to get a signal to S9. A voice connection of 2-3 bars is normal. (This assumes that one party is within the city.)

BG4KFX

Feedback from another station. I heard KKN's CQ on the Yellow River repeater. I could only hear the beginning of KKN's callsign, the audio was very quiet, with a significant amount of background noise and strong interference, making it impossible to understand or decode further information.

BG4KKN

BG4KFX Received the signal report, thank you. 73

Bi4KKF

BG4KFX BG4KKN If that's the case, I can reach out to BG4KKN via private message and ask them to analyze your situation. They can help determine whether the issue is related to distance or location. Most likely, changing your location or fully charging the battery will resolve the problem.

BI7LVX

I'm not sure if you're using a repeater, and I don't know how far away it is from you or if there are any obstructions. It's difficult to determine the source of the problem based on this information. Here's what I can think of:

Generally, the UV signal is coming from the upper repeater. I recommend testing with several friendly stations to see if the large amount of noise could be due to poor signal quality between the UV and a particular friendly station. If you monitor on the upper repeater for about a week, you should be able to get a general idea of where the friendly station is located, and you can confirm this by contacting several other stations.
If you know where the repeater is located, try going to the repeater's vicinity and testing from there (generally, they won't tell you the exact location of the repeater).
The original antenna is actually quite mediocre. I recommend buying a 770-inch boom from Quanzhou, which will significantly improve both receiving and transmitting performance, and cost around 30 yuan.
I had previously tried the QuanSheng handheld radio when changing antennas, and accidentally triggered the PTT (Push-to-Talk) button, which caused the amplifier to burn out. The symptoms were very similar to what you described. I thought my radio was a high-power transmitter, but after testing, it only produced 0.3 watts of power.
If you find the above options too complicated, the simplest solution is to buy another one.~~You can even test it for 7 days with no reason after completion.~~。

BG4KKN

BI7LVX Okay, thank you very much. I was actually at the repeater location. I'll try again from a better spot over the weekend. 73!

BI3SDE

BI7LVX How long does a transceiver without an antenna typically take to burn out when using PT mode? My K6 has been misfiring repeatedly, and I don't currently have the ability to measure it myself.

BG7RHK

BI7LVX 如果功放被烧，那你岂不是连射也射不出吗,为啥只有0.3W?

BI7LVX

BI3SDE I'm not sure, as different machines and power levels can't be compared. My previous one was similar: I turned it off, grabbed the antenna, pressed it down for about 1 second, then released it, and it worked. However, when I sent it back to QuanSheng for warranty service, they actually accepted it.

BI7LVX

BI3SDE When buying a field strength meter for small yellow croaker, it's only a matter of tens of yuan. Although it can't accurately measure the power output, it at least allows you to get a general idea of the transmission effect.

BG3XX

This post highlights a common recurring issue: no longer using "53" to replace "39" when reporting signals to other stations. It seems that the person who wrote the original post is an experienced teacher.

radiox

Newbie, my device is a QuanSheng UVK5. Is there a signal report being displayed? Or is it just an estimate? I'm not seeing any reports.

BI9BWT

radiox
The signal is estimated based on the clarity and strength of what you hear. There's a rating standard called RST, which corresponds to readability, strength, and tone. 59 refers specifically to readability and strength.