Radioddity GD77 USB charging lead

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gw6rtv
Posts: 18
Joined: Sat Oct 22, 2022 2:47 pm

Radioddity GD77 USB charging lead

Post by gw6rtv » Tue Feb 14, 2023 12:30 pm

Radioddity GD77 USB charging cable has gone brittle and the cable sheath is cracking in many places, has any on in the UK had the same problem, if so where did you source a replacement one.

Regards
John GW6RTV

VK3KYY
Posts: 7478
Joined: Sat Nov 16, 2019 3:25 am
Location: Melbourne, Australia

Re: Radioddity GD77 USB charging lead

Post by VK3KYY » Tue Feb 14, 2023 8:17 pm

Its the same cable as used by the TYT MD380, UV380, Retevis Rt3 and RT3S

The cable does not contain any electronics. You can make your own, by using and good quality USB phone charging , and soldering it to the jack plug end of the cable

gw6rtv
Posts: 18
Joined: Sat Oct 22, 2022 2:47 pm

Re: Radioddity GD77 USB charging lead

Post by gw6rtv » Wed Feb 15, 2023 8:03 pm

Many thanks for the info.
John
GW6RTV

kt4lh
Posts: 272
Joined: Sun Jan 12, 2020 4:27 am

Re: Radioddity GD77 USB charging lead

Post by kt4lh » Thu Feb 16, 2023 12:45 pm

If you already have a 12v source on your desk, it'd probably be better to just modify the charger.

https://opengd77.com/viewtopic.php?f=8&t=564

VK3KYY
Posts: 7478
Joined: Sat Nov 16, 2019 3:25 am
Location: Melbourne, Australia

Re: Radioddity GD77 USB charging lead

Post by VK3KYY » Thu Feb 16, 2023 8:30 pm

I think there is some confusion here

The GD77 does not charge via USB.

Some of the original GD77's had a charger with a USB socket and what appears to be a USB cable, but the USB socket was outputting 10V instead of the usual 5V.

This was dangerous as it could destroy any normal USB devices plugged into this PSU.

I housed the USB plug into the socket on this charger to make it impossible to use it for real USB devices.




The real USB cable is the one that plugs in the side of the radio to upload the firmware and codeplug etc. This does not charge the radio

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