While browsing Bilibili, I came across a video by M and discovered this software, which seemed interesting. VarAC supports shortwave chat in Chinese, requiring the use of both VarAC and vara hf software. Vara hf converts data into an audio signal for modulation, while VarAC provides support for Chinese. I am using versions 4.8.7 of Vara hf and 9.1.0 of VarAC. I tested these two programs simultaneously on two laptops, communicating through the computer's speakers and microphone.
Official address of VarAC:https://www.varac-hamradio.com/
Vara download address:https://downloads.winlink.org/VARA/Products/
1. Vara HF settings
After installing the software, configure the sound card in Settings-Sound Card.
2. VarAC Configuration
Varac supports Chinese. First, switch to Chinese. In Settings > Appearance and Sounds > Interface language, select Chinese.
Then, in Settings > My Information, set the call sign and other information such as grid radio.
I used two laptops for testing, and on one of them, I filled in personal information with BD888.
3. Function testing
CQ Call: To initiate a CQ call, click the "CQ" button on BD888. This will display the CQ slot selector. For example, using 14 MHz, the CQ call will be established at 14.105. Once connected to the radio, it will automatically switch to the appropriate frequency for subsequent point-to-point communication. To initiate a CQ call, click "CALL CQ" on BD888.
On the BD8DGP interface, the CQ station will display the current CQ call sign. Double-clicking the other party's call sign establishes communication.
The frequency in the upper right corner will automatically switch to QSY, and the message box will display historical messages, currently sent messages, and messages awaiting transmission. In addition to sending messages, you can also send emails.
This is a brief introduction; it's best to test the software yourself using two laptops to get familiar with its usage.
4. Off-topic
vara hf is a shared software. If you don't have a license, it will display a pop-up window while in use. I spent some time removing this annoying window by using the bp CreateWindowExA breakpoint in x32dbg and then executing nop at the call identified in the image to remove the popup. I have also attached the processed file, which you can directly replace. You can also do it yourself with tools.
Link:https://pan.baidu.com/s/1dG5nIWPwZ4vKe-d2NW17bw
Extraction code: 7q4e
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