德-众望所归 发表于 2018-9-30 21:00:29

请问 FM MPX ADAPTER ( 调频MPX适配器 )是什么意思？

请问 FM MPX ADAPTER ( 调频MPX适配器 )是什么意思？是FM立体声解码器吗？还是声道一转二而已。

德-众望所归 发表于 2018-9-30 22:03:55

研究明白了，是调频立体声解码器。

德-众望所归 发表于 2018-9-30 22:12:07

配我的山水调频头正合适。:lol

德-众望所归 发表于 2018-10-1 20:11:48

Welcome!

Welcome to the FM MPX site, which is dedicated to information on stereo MPX adapters. To start, it highlights the LM4500 stereo MPX adapter project. I started this project almost 10 years ago, while looking for a high performance stereo adapter for late 50’s mono FM tuners. I found a source for LM4500 chips, and since then I’ve built five LM4500 adapters. The first one was hand wired, and the rest were done with DIY printed circuit boards, using the toner transfer method. In learning to make make boards at home, I ended up etching 3 different versions of the board before I was happy. After getting it pretty well optimized, the board design was done double sided with silkscreen and mask at a PCB house, and now looks excellent. That’s the version I’ll make available to anyone else that would like to build one. Here’s a picture of the the last homemade version, shown with an output filter designed by our our FMTuner contributor Ray.   

收音机矿石 发表于 2018-10-1 20:27:36

德-众望所归 发表于 2018-10-1 20:11
Welcome!

Welcome to the FM MPX site, which is dedicated to information on stereo MPX adapters. To ...

It's very good! But where is the site?
Would you please give us the web site?
Thank you very much!

德-众望所归 发表于 2018-10-1 20:37:40

收音机矿石 发表于 2018-10-1 20:27
It's very good! But where is the site?
Would you please give us the web site?
Thank you very muc ...

http://www.fmmpx.com/index.html

收音机矿石 发表于 2018-10-1 20:54:26

德-众望所归 发表于 2018-10-1 20:37
http://www.fmmpx.com/index.html

谢谢楼主的及时回复！
祝节日快乐！

德-众望所归 发表于 2018-10-1 21:06:39

收音机矿石 发表于 2018-10-1 20:54
谢谢楼主的及时回复！
祝节日快乐！

节日快乐！！
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