OpenGD77

Hi Roger, the internal microphone had an electrical fault. I replaced it with another one from the tinkering box. No more wind noise without modulation. Voice reproduction is good. :D The included antenna was also very very bad, it is resonant on 560Mhz - so unusable for amateur radio - I had to rep...

Hi Roger,
I found the error (wind noise in TX). It was the micro. It is extremely small...
73 Alfred

Roger and Colin,

thank you for your support !

73 Alfred OE7ABH

Is the noise present with the official firmware ? I will do the test ! Please a little patience.... Original firmware restore RT3s: After restoring the flash, the original firmware worked again! I took this firmware-link (RT3s non GPS): https://www.retevis.com/rt3s-dual-band-dmr-radio-built-in-gps-...

Roger, your installation guide RT3s: Is this the correct link for the original firmware? Can that be true? Radioddity has firmware for the UV380 via this link: https://www.tyt888.com/uploadfile/upfiles/20210415143046.zip I took this link (RT3s non GPS): https://www.retevis.com/rt3s-dual-band-dmr-rad...

VK3KYY wrote: ↑

Wed Nov 23, 2022 10:16 am

oe7abh wrote: ↑

Wed Nov 23, 2022 10:05 am

Hi Roger,
In FM with OpenMDUV380 firmware the wind noise is also present, but not as disturbing as in DMR !

Is the noise present with the official firmware ?

I will do the test ! Please a little patience....

Hi Roger,
In FM with OpenMDUV380 firmware the wind noise is also present, but not as disturbing as in DMR !

Hardware from my new device:

http://tyrofly.at/forum/rt3s_3.jpg
http://tyrofly.at/forum/rt3s_4.jpg

Alfred, OE7ABH
http://tyrofly.at/funk.htm

Hello Roger, hello Colin!
Thanks for the quick reply!
I think it's the hardware. The radio is brand new!
At -15db it gets a little better, but doesn't eliminate the problem.
Alfred OE7ABH

Hi Colin,

AF level -> Without modulation -> PTT only!
With external handheld microphone, the effect is no longer present.
Info: External Antenna



Alfred, OE7ABH