说明书要求13.8V，电流不小于23A的直流电源，可又说可接到12V负极接地的直流电瓶上，难道12-13.8V均可接受吗。貌似网上找符合相关要求的电源型号并不多，但服务器12V直流电源特别多。如果在家作为基地台使用，不考虑野架的话，直接淘个二手服务器12V直流电源是否可行。刚买了一台新设备，还不太敢瞎弄坏了 [upl-image-preview url=https://storage.hamcq.cn/2024-12-18/1734533717-134535-2024-12-18-105434.png] [upl-image-preview url=https://storage.hamcq.cn/2024-12-18/1734533724-843663-2024-12-18-105458.png]

作为基地台用的话不妨配个好一些的电源, 改的服务器电源不推荐长期用

标称工作电压正负15%都没问题，服务器电源给电台用的话一般都改13.8v输出，淘宝上有成品出售。

@"BI7KHZ"#p46390 12V可以的，说明书下方有“13.8V正负15%”，我自己野架用的是12V的电瓶，满电的情况下电压会略高于12V，在家就用求精电源。发射时注意检查电压

打开淘宝搜钻石电源，专门给电台用的

@"BG6HVC"#p46391 容易坏吗，还是风扇声音太大了

@"Liridice"#p46395 只是说超过15%不保修，貌似没有说推荐你用12V

@"Prologue"#p46398 求精电源风扇声音咋样

@"BI7KHZ"#p46403 虽然但是，慢慢你就知道我这个说法是否正确了。

@"BI1JNP"#p46400 买这个肉疼，如果有这么多预算也能搞个原厂FP-1030A电源了

@"BI7KHZ"#p46404 长时间发射转起来会有点吵

Newcomers to shortwave radio: How do I set up the power supply for the FT-891?

BG5LU

个人理解：
1、13.8是标准工况，许多电台甚至低于11V都能工作，只是发射功率受影响。电压过低电台也容易莫名其妙的故障，如死机、重启等。
2、部分服务器电源会对短波某些频率干扰，如果干扰正好落在您期望通联的频率上，会影响您的心情，而且服务器电源也没专门针对短波发射时产生的干扰进行过测试，是否会导致电压不稳、产生跳变之类。（卖服务器电源的非常不喜欢看到这句）
3、某精之类国产通信电源，针对上述问题有个旋钮，可以调节振荡频率，如果某频率发现被通信电源干扰，可以把干扰源“移开”，从而保证当前通联频率的“干净”。厂家也针对短波发射进行测试，在爱好者中保有量也挺大。
4、某石GSV3000之类的线性电台专用电源除了“贵”、“重”以外，没啥缺点。
5、我个人有某石线性电源，也有某精开关电源，也买过改装好的服务器电源。经过取舍，最终还是使用开关电源来带短波机，毕竟大几千的短波机，没必要冒这么大风险配个改装电源，通信开关电源也就几百块。
通信电源还有个好处就是原生带个点烟器，手台之类的大多数支持直接用13.8V进行充电，这样就不用多插一个手台电源，怼个车充上去还能临时充充手机。
服务器电源我也在用，偶尔用来测试车台之类临时使用，电流不大，设备也没短波台贵，风险也小一些。
线性电源因为太重，放了一阵子把桌子都压变形了，所以现在收起来了。

上述内容仅为本人愚见，无任何贬低服务器电源的意思，若与各位观点不同，一笑而过即可，无需争辩，您都对。

BI7KHZ

BG5LU By the way, could you tell me approximately how heavy your specific linear power supply and specific switch-mode power supply are?

BG2EWI

BG5LU The issue is that the server power supply I'm using generates random interference in the 10-12 MHz frequency band. Specifically, when the radio is idle, there's a strong interference line in the center of the waterfall graph. If I then turn on another 12V high-current device connected to the same power supply, the interference will gradually shift away. However, as soon as I turn off the other device, the interference immediately returns.

BG5LU

BI7KHZ
The GSV3000 weighs approximately 9.5 kg, while a typical fine switch power supply weighs around 1.5 kg.
Specifically, you can refer to the product specifications of both "Shiji Jin Yu" and "Sky Communication" stores on Taobao.

BG6HVC

BA7NNC-JOE Commonly seen in the air: 73

BG6HVC

BI7KHZ I mostly use battery power; my home doesn't have the infrastructure to support antenna setups.

BI7KHZ

BG5LU I just got a retired Dell server with a 12.2V Taitai power supply, and it does indeed mention wireless interference.

If you have some free time, try comparing the performance of a ham radio friend's switching power supply with this one. Then, I will report my findings to everyone here.

BH7MNE

Using the gsv3000 diamond

BH2XAY

BH7MNE

Did you receive the card I mailed to you on December 5th of last year? I still haven't received your QSL card.

BG5BLI

BG2EWI I've experienced the same interference from your device. I suspect it's caused by interference from other devices in the surrounding residential area, such as those used for security or monitoring. I've tried using different power supplies and batteries, but the interference persists between 6:00 PM and 11:30 PM. After this time, the interference disappears completely.

palmerxiaobiao

You can refer to my 891, which uses the "Qingjing Power Generation 1st generation" power supply.

BA7BK

I'm using a 10 yuan/each, bargain-priced power supply for the light box, which I modified to provide 14.5 volts and use an external EMC. It has been working normally for two years, and I frequently use it on shortwave for FT8, with no unusual interference observed on the Q900 spectrum. The shortwave radio, UV-band car antenna, and computer monitor are all powered by this power supply.

BG6UFA

The power source with the least radio interference will undoubtedly be a battery, specifically a 12V lead-acid or four-series LFP battery pack for automotive use.

One advantage of a 1U server power supply is that it's inexpensive.

The power supply for the patch panel costs around 30 yuan, which is only about one-tenth to a fraction of the price of what's advertised as "radio-specific power supplies."

I suggest that the original poster should start with a 1U power supply and see if it meets their requirements before considering more expensive options.

After all, it's a very cheap vegetable, so I don't think it's worth throwing away.

BG2EWI

BG5BLI No, the interference I'm experiencing is caused by the power supply itself. Specifically, the interference frequency remains constant when the power supply is in standby mode without any connected devices. However, once a device is connected, the interference frequency on the waterfall chart gradually deviates. When the device is disconnected, the interference frequency slowly returns to normal.

BG5BLI

BG2EWI Mine is the same; as soon as the power fan starts spinning, the interference causes it to malfunction and shut down. Try turning it on at other times, such as late at night or early in the morning. I also have a lamp at home that acts like a full-band blocker; whenever it's turned on, it completely blocks the signal.

BG8KUQ

I need a good quality power supply; any one I buy from the seafood market will work.
Linear power supplies are good, but their impact is much lower than the high-frequency noise generated by modern urban environments. It would be better to focus on improving antenna design.