# QYT KT-9900 cable question
**URL:** https://forum.digirig.net/t/qyt-kt-9900-cable-question/5146
**Category:** Uncategorized
**Tags:** qyt-kt-9900
**Created:** [January 10, 2025, 4:33pm UTC](https://forum.digirig.net/t/qyt-kt-9900-cable-question/5146 "2025-01-10T16:33:25Z")
**Posts on this page:** 7
**Page:** 1
### Author:  [@Paul\_Klamer](https://forum.digirig.net/u/Paul_Klamer)
#### Post date: [January 10, 2025, 4:33pm UTC](https://forum.digirig.net/t/qyt-kt-9900-cable-question/5146/1 "2025-01-10T16:33:25Z")
I purchased the AnyTone AT-778UV Audio/PTT Cable because it says that it works on the QYT KT-9900. But the cable features an RJ connector while the KT-9900 has a DIN style screw on connector. in fact except for the 3.5mm spkr plug there is nothing abut this cable that is compatible with the KT-9900 radio. What gives?
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### Author:  [@K0TX](https://forum.digirig.net/u/K0TX)
#### Post date: [January 13, 2025, 3:57am UTC](https://forum.digirig.net/t/qyt-kt-9900-cable-question/5146/2 "2025-01-13T03:57:10Z")
Paul,
I checked the compatibility assignment for AT-778UV cable and it was indeed incorrect listing KT-9900. My apologies for the mix-up, we’ll get this sorted out.
There are several GX16 cables in store, but from what I can tell based on the [information online](https://manuals.plus/qyt/kt-9900-25w-waterproof-mini-car-two-way-radio-manual) there is no exact match.
You can use the cable you received and replace the RJ-45 connector with the GX16-8 matching your radio. If you prefer not to deal with the homebrew project or would rather make the cable from scratch, please let me know and I’ll provide a prepaid return shipping label for the return of the cable.
It looks like there is a rebrand of the same radio which was discussed earlier:
> [@Cable for QYT KT-WP12 / Anysecu WP-9900](https://forum.digirig.net/t/cable-for-qyt-kt-wp12-anysecu-wp-9900/2725):
>
> Hello! This is a long shot, but maybe a fun puzzle for somebody. sweat_smile I created a custom cable to interface with the Anysecu WP-9900. The pinout of the hand mic is: ([source](https://manuals.plus/anysecu/wp-9900-mobile-fm-transceiver-manual)) The good news: audio in/out works The bad news: PTT does not work What I discovered is when pin 1 in shorted, it actually presses the MONI button (#1), not the PTT: In other words, a short “press” on pin 1 toggles the “monitoring” mode, and a long “press” turns the radio on and off. Is the …
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### Author:  [@N3JZE](https://forum.digirig.net/u/N3JZE)
#### Post date: [May 23, 2025, 2:44pm UTC](https://forum.digirig.net/t/qyt-kt-9900-cable-question/5146/3 "2025-05-23T14:44:43Z")
Question: I have had the microphone cable pull out if the mic connector. I do know the mic jack poinout but what I need is the mic cable color code in order to re-solder. Multiple wires broke off of the connector. I have reached out to QYT on several occasioins but have not received a reply. ASny info would be greatly appreciated.
Thanks,
N3JZE
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### Author:  [@K0TX](https://forum.digirig.net/u/K0TX)
#### Post date: [May 23, 2025, 4:20pm UTC](https://forum.digirig.net/t/qyt-kt-9900-cable-question/5146/4 "2025-05-23T16:20:00Z")
Color coding is not always reliable, confirming connections with a continuity tester is a better option. If you need help figuring out the signals, post pictures of both sides of the mic’s board and we’ll try determine the wiring.
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### Author:  [@N3JZE](https://forum.digirig.net/u/N3JZE)
#### Post date: [May 23, 2025, 6:32pm UTC](https://forum.digirig.net/t/qyt-kt-9900-cable-question/5146/5 "2025-05-23T18:32:24Z")
Thank you for your response. I have attached two photos for reference. Inside the microphone is a molex-type connector onto the circuit board. At this time I have not taken the circuit board out of the microphone housing to trace out the circuits. I was hoping to purchase a replacement cable, match the colors on my original cable, repair, and use the original as a spare. Unfortunately I have been unsuccessful in obtaining a replacement cable. I was a bit disappointed that there wasn’t better strain relief clamping on the mic cable connector.
Information would be helpful.
Thank you,
Scott Yenser, N3JZE
> **(attachments)**
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### Author:  [@K0TX](https://forum.digirig.net/u/K0TX)
#### Post date: [May 23, 2025, 6:52pm UTC](https://forum.digirig.net/t/qyt-kt-9900-cable-question/5146/6 "2025-05-23T18:52:37Z")
The PCB doesn’t show any markings, there may be some silkscreen print on the back side that could help identify the signals. I did google lens search and it came up with this among the results:
May be a similar color scheme if you want to trust it.
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### Author:  [@N3JZE](https://forum.digirig.net/u/N3JZE)
#### Post date: [May 23, 2025, 8:07pm UTC](https://forum.digirig.net/t/qyt-kt-9900-cable-question/5146/7 "2025-05-23T20:07:21Z")
Thanks. The photo you sent is quite different mainly due to not only audio. PTT, and up.down buttons, but has additional functions since the microphone is also the control head.
I will need to possibly trace out the circuit board.
Thanks again.