[upl-image-preview uuid=c2bdc759-edfd-413e-8c50-adff59c12ace url=https://storage.hamcq.cn/2025-09-01/1756721574-937542-image.png alt={TEXT?}] 之前做过一版不带隔离的，最近抽时间做了一半增加了隔离保护的，声卡使用的是CM108B，串口使用的CH340K，引出了RX/TX以及RTS和DTR 音频部分使用了一对1:1的音频隔离变压器(还没测试) 串口部分使用的是ADUM1201做的串口隔离，RTS/DTR使用的是TLP2368光耦，然后使用一个(好像是国产的？)贴片隔离电源模块供电3V3 目前测试串口部分应该是没问题的(图里刮开了是因为ADUM1201的RX/TX画反了，后面正式版板子会改正) 音频部分过几天测试一下有没有问题接口部分使用的是一个Type-E的夹板母座（本来想支持正反插，结果发现Type-E好像有一个定位角没办法做到正反都能插入），后续发布正式版会给出线序

@"BH7HCU"#p77054 看看（？）

@"BH2VSQ"#p77057 哈哈，我刚发了个帖子

@"BH2VSQ"#p77057 [upl-image-preview uuid=e1e1388b-0c58-4492-83eb-cbcd8dab5c22 url=https://storage.hamcq.cn/2025-09-01/1756726269-176784-img-20250822-074427.jpg alt={TEXT?}]

@"BA7JKX"#p77067 电台的数据盒子（

I recently built a new radio box.

BH6ABO

Top

BG7NQF

BH2VSQ Trapped inside the shell... Buff is disabled.🙃

BG7NQF

BG7NOD Ah, another one from Shenzhen with an "N" at the beginning!

BH7HCU

Anonymous8 Received

BH7HCU

BH6ABO

BH6ABO Used in older radio stations and handheld transceivers.😂

BD3OZV

What is the model number of the audio transformer? It appears to be smaller than the ED8.

BH2VSQ

BD3OZV I'm using the P0926NLT, which I purchased from the Linglong Mall (order number C22463714). However, I haven't tested it yet to see if it works well.

BD3OZV

BH2VSQ
The stated operating frequency is above 50 kHz, but it seems a bit questionable.

BH2VSQ

BD3OZV I originally found it on Taobao, and I bought it because they said it was an audio isolation transformer.

BH2VSQ

The loop test seems to be working well.

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