For an analogue radio the USB end is usually a generic USB/Serial converter chip. For DMR radios the USB chip is usually inside the radio with no electronics in the cable.

On 31 May 2020 at 02:31 Phil phillor9@gmail.com wrote:

I have a project in mind that needs a USB interface lead and since I have several Baofeng programming leads I thought I might cut the radio end off and be left with a TTL compatible lead. Is that the way these leads work or are they specific to the Baofeng radio?

-- Regards, Phil

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Nigel A. Gunn, ///shoulders.outwards.resolutions tel +1 937 825 5032 Amateur Radio G8IFF W8IFF and GMRS WRBV701, e-mail nigel@ngunn.net www http://www.ngunn.net

On Sun, May 31, 2020 at 2:32 AM Phil phillor9@gmail.com wrote:

I have a project in mind that needs a USB interface lead and since I have several Baofeng programming leads I thought I might cut the radio end off and be left with a TTL compatible lead. Is that the way these leads work or are they specific to the Baofeng radio?

-- Regards, Phil

Hi Phil,

Yes. The traditional Baofeng labeled programming cable has a counterfeit Prolific PL2303 USB-to-TTL chip inside. More recently Baofeng labeled programming cables have been shipping with the WCH CH341 USB-to-TTL chip.

The shell of the USB end can usually be easily be removed allowing access to the RXD, TXD and GND terminals of the USB-to-TTL module inside.Visit this page and scroll down to "Cosmetic Retrofit".

https://www.miklor.com/COM/UV_ProgrCable8900.php

Jim KC9HI