我手头的自制电台输入输出均为两根3.5mm音频线。天线架设在楼顶，但是夏日炎热，不可能在天台整夜守着。于是想到让audio走网络，人在楼下吹着空调远程控制。研究了一通，大致方法就是通过USB声卡采集audio/mic信号，声卡插在到路由器上，路由器上运行的OpenWRT上跑Virtualhere。Virtualhere是一种远程USB方案，它使用改进的USB/IP协议，在保证性能的同时实现了多平台USB共享 >未授权（试用）版本可以连接一台USB设备。官网https://www.virtualhere.com/ > Virtualhere的服务端支持Android/Windows/macOS/Linux的各类主流架构。甚至支持NAS如群晖的DSM，华硕的ADM，威联通QNAP。客户端就比较少，只有Windows/Linux（GUI或无头模式）。 **所需材料** - 闲置的路由器，要求能刷OpenWRT固件（我用的是newifi mini） > Padavan固件也行，甚至恩山论坛上的固件已经内置了Virtualhere server，就免得折腾了 - USB接口的声卡（我随便买了个绿联的US205，有mic和audio两个插口） 1. virtualhere需要跑在路由器的OpenWRT系统上上，所以首先请想办法把路由器刷成OpenWRT，然后得知其处理器架构。我手头这台是 MediaTek MT7620A处理器，架构为ramips/mt7620 （属于MIPSel，MIPS24KeC），大家按自己家路由器CPU型号查询，不一定是这个架构。不过大家既然都会刷OpenWRT了，肯定也知道是啥架构= = [upl-image-preview uuid=ed5ac67d-848c-4bf3-af07-1df971dff58f url=https://storage.hamcq.cn/2025-10-14/1760407320-366710-image.png alt={TEXT?}] 2.去下载virtualhere服务端。下载到的文件名字各不相同，为后文叙述方便，我这里将其重命名为virtualhere，假设说你下载了放在D盘里。 > 注意官网这里有一些针对特定开发板SBC（板上处理器）或特定架构的性能优化版本，叫做“CPU optimized builds of VirtualHere USB Server for Maximum Performance” 。但是需要授权许可（在客户端上输入license key，这个key吧……网上有一些旁门左道（小声），但建议最好入正版） 2.使用scp命令将virtualhere拷贝到路由器中，打开终端。假设说你的路由器的IP是192.168.2.1，执行： `scp -O D:\virtualhere root@192.168.2.1:/usr/share/` 然后给个权限，并且运行之 ` cd /usr/share chmod +x /usr/share/virtualhere /usr/share/virtualhere -b` 3.将其添加到OpenWRT的自启任务中（路由器管理界面系统→启动项→本地启动脚本）在exit 0 前增加一行 `/usr/share/virtualhere -b` 4.去virtualhere官网下载客户端软件 https://www.virtualhere.com/usb_client_software，无需安装点击打开。如果连上了路由器，电脑上运行的客户端应当发现作为virtualhere服务器的路由器名称 [upl-image-preview uuid=5ef1fb12-cc29-476c-8306-152fa379846d url=https://storage.hamcq.cn/2025-10-14/1760407576-133596-image.png alt={TEXT?}] 5.将电台音频线缆和USB声卡接好，USB声卡插到路由器上。回到房间里，莲那个电脑上应当能自动发现音频设备，仿佛直接插在本机上。接下来就可以愉快地玩耍了。备注：由于路由器性能限制、偶尔会出现丢包，但总体使用效果良好。另外如果声卡采样率允许调整可适当降低，减轻吞吐压力。此外，有意折腾的HAM，也可以考虑用路由器上的内网穿透工具，实现真正的离家远程操作？ **致谢** **本攻略参考了部分网上教程**，尤其是 https://www.toutiao.com/article/7123119746773565990/

可以考虑入个蒲公英盒子，配合virtualhere很好用，可以公网使用，比路由器更自由一些。

能挂路由器的话，是不是可以挂到NAS上？

@"BG9JXB"#p82110 对，文章开头就写了支持NAS。支持的NAS平台列表在这里 https://www.virtualhere.com/nas

@"BH7JUO"#p82132 如果电台本身支持CAT（基于串口协议，串口又是USB模拟出来的）那USB线直接插上去就完了。另外： Virtualhere server端的运行参数 ` options: -b run as daemon in the background 作为后台的守护进程 -c configuration file 查看配置文件 -h display this usage 显示CPU使用率 -l display license text 显示许可协议 -i prefer ipv6 (dual/stack) 偏好通过IPV6地址 -r log to file instead of syslog 把日志输出到文件里` https://github.com/deker1176/VirtualHere-USB-Server-v4.3.3 此仓库有早期版本如果发现连不上，可能需要手动添加防火墙规则 `iptables -t filter -I INPUT -p tcp --dport 7575 -j ACCEPT iptables -t filter -I INPUT -p udp --dport 7575 -j ACCEPT`

@"BH5UNT"#p82153 virtualhere 未授权版本只能支持一台usb设备，如果CAT占用了USB口，声卡就得再搞一台设备（或者买virtualhere的授权）了

[upl-image-preview uuid=0b81b6eb-19e0-46ac-ad85-43eb45cde439 url=https://storage.hamcq.cn/2025-10-19/1760851525-866720-20251018-215514.jpg alt={TEXT?}] [upl-image-preview uuid=bd62bbc3-3741-4e55-9d27-10a1ae3073a5 url=https://storage.hamcq.cn/2025-10-19/1760851535-234828-image-1760851471837.jpg alt={TEXT?}] 我这边直接扔了个Radxa Q6A在电台室，上面跑Linux，用的时候moonlight远程连过去，平时也开着openwebrx方便远程听。

Use a USB sound card + OpenWRT router + VirtualHere to enable traditional radios to be remotely controlled.

BH5UNT

I used two 3.5mm audio cables for both input and output. The antenna was mounted on the roof, but it's too hot in summer, so I couldn't stay up there all night. Instead, I decided to use the audio over a network, allowing me to control it remotely from downstairs while using the air conditioner.
After some research, the general approach involves using a USB sound card to capture audio/mic signals, with the sound card connected to the router. OpenWRT, running on the router, then uses Virtualhere. Virtualhere is a remote USB solution that utilizes an improved USB/IP protocol, enabling multi-platform USB sharing while maintaining performance.

The trial version (unlicensed) can connect to one USB device. Official website: https://www.virtualhere.com/

The Virtualhere backend supports a wide range of mainstream architectures, including Android/Windows/macOS/Linux. It also supports NAS systems such as Synology's DSM and ASUS' ADM, as well as QNAP's QNAP. The client side is more limited, supporting only Windows/Linux (with either GUI or headless mode).

Required materials

An old router that can be flashed with OpenWRT firmware (I'm using a newifi mini).

The Padavan firmware also works, and even the firmware available on the Enshan forum already includes a VirtualHere server, which saves you from having to configure it yourself.

USB audio interface (I just bought a Green Voltron US205, which has both microphone and audio input ports)
virtualhere needs to run on the OpenWRT system of your router, so first, figure out how to flash your router with OpenWRT. Then, find out what processor architecture it uses. The one I have is a MediaTek MT7620A processor, which has a ramips/mt7620 (MIPSel, MIPS24Kc) architecture. Please check the CPU model of your own router to see if it matches. It doesn't necessarily have to be this architecture. However, since everyone is flashing OpenWRT, you should also know what architecture it uses = =

2. Download the virtualhere server. The downloaded files will have different names, so I've renamed them to "virtualhere" for convenience in subsequent instructions. Assuming you downloaded it and placed it on your D drive.

Please note that the official website offers some performance-optimized versions specifically for certain development boards (SBCs) or architectures, called "CPU optimized builds of VirtualHere USB Server for Maximum Performance." However, a license is required (you need to enter the license key on the client side... there are some unofficial ways online, but it's best to purchase a legitimate copy).

2. Use the `scp` command to copy virtualhere to the router. Open a terminal. Assuming your router's IP address is 192.168.2.1, execute:

scp -O D:\\virtualhere root@192.168.2.1:/usr/share/

Then grant the necessary permissions and run it.
cd /usr/share chmod +x /usr/share/virtualhere /usr/share/virtualhere -b

3. Add it to OpenWrt's auto-start task (Router Management Interface → Startup Items → Local Startup Scripts)
Add one more line before exit 0

/usr/share/virtualhere -b

4. Download the client software from the virtualhere website. https://www.virtualhere.com/usb_client_softwareNo installation required; simply click to open. If you are connected to a router, the client running on your computer should identify the router as a virtualHere server.

5. Connect the radio audio cable and USB sound card, and plug the USB sound card into the router. Go back to the room, and on Lily's computer, the audio device should be automatically detected, as if it were directly connected to the machine. Then you can start enjoying yourself.

Note: Due to limitations in router performance, occasional packet loss may occur, but the overall user experience is good. Additionally, if the audio card's sampling rate can be adjusted, it can be appropriately reduced to alleviate network traffic pressure. Furthermore, for experienced HAM radio operators who are looking for advanced features, they could also consider using the built-in VPN tool on the router to achieve true remote operation from home.

Acknowledgments
This guide was based on some online tutorials., especially https://www.toutiao.com/article/7123119746773565990/

BI4JWL

Consider purchasing a dandelion box; it works well with virtualhere and can be used on the public network, offering more freedom than a router.

BG9JXB

If I can connect a router, can I also connect it to a NAS?

BH5UNT

BG9JXB Yes, the article starts by stating support for NAS. The list of supported NAS platforms can be found here.
https://www.virtualhere.com/nas

BH7JUO

How can I control the frequency adjustment using PTT?

BH5UNT

BH7JUO If the radio itself supports CAT (using a serial protocol, where the serial port is simulated via USB), then simply plugging in the USB cable will work.

Additionally:
VirtualHere server-side runtime parameters
Options: -b run as a daemon in the background (as a background process) -c configuration file: View the configuration file -h display this usage shows CPU utilization -l display license text Display license agreement - I prefer IPv6 (dual/stacked) - redirect log output to a file instead of using syslog

https://github.com/deker1176/VirtualHere-USB-Server-v4.3.3 This repository contains earlier versions.

If you are unable to connect, you may need to manually add firewall rules.
iptables -t filter -I INPUT -p tcp --dport 7575 -j ACCEPT iptables -t filter -I INPUT -p udp --dport 7575 -j ACCEPT

BH2VYJ

BH5UNT The unlicensed version of virtualhere can only support one USB device. If the CAT occupies a USB port, you will need to acquire another device (or purchase a license for virtualhere).

BI7BST

I set up a Radxa Q6A directly in the radio room, running Linux. When I use it, I connect remotely using Moonlight. I also keep OpenWebRX enabled for convenient remote listening.

BI1SFC

推荐个相关的软件，OpenWRT手机管理软件“OPAssistant”，支持OpenWRT 21.02及以后所有版本。远程操作电台同时也可以管理OP路由器
1、IOS用户前往App Store 搜索 OPAssistant 安装；
2、Android用户使用离线apk安装（openappfilter.com/assets/app/OPAssistant.apk）。

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