OpenGD77

Hi Daniel, hi Roger ! First: - Change my raspberry power supply (5V 2.5A) - Hardware: Raspberry (2017) pi 3 model B + and raspberry (2014) pi model B + V1.2 - New SD card (16GB) - Download Pi-Star V4.1.2 - Write the image to the SD card - Config Pi-Star as GD77 hotspot (TX QRG 144.725Mhz) - Pi-Star ...

Hi Daniel,

I will reinstall pi-star on a different SD card and reproduce the state. Please wait.
I will post the result in a new "dmesg-output.txt" !

Merci
73 Alfred OE7ABH
http://tyrofly.at/

Hi Daniel, hi Roger !
Tested with:

3 different GD77 devices
3 different original-antennas
3 different original program cables
1 self-soldered shielded and ferrit cable
TX-Power: 50mW

Same result !!
73 Alfred

Hi Daniel,
Please !
73 Fred

Hi, I soldered a shielded cable: shielded USB cable with ferrite (shielded GND -> gd77 side open) Works with outdoor antenna UFB. With the original antenna no TX after a few seconds !!!! Same problem with original cable! Transmit-power: 50mW :roll: http://members.chello.at/abh/forum/GD77_cable1.jpg ...

Daniel,
where can I find 'dmesg' output?

Hello roger! Thank you for your prompt reply ! A shielded cable with a ferrite choke brings no improvement. Maybe you can test it yourself. 73 Alfred The problems are almost always caused by RF injection into the USB or the host computer system. Many people have the hotspot working 100% of the time...

Hi Daniel,

Please !

73 Alfred OE7ABH

Hello roger!

Thank you for your prompt reply !
A shielded cable with a ferrite choke brings no improvement.
Maybe you can test it yourself.

73 Alfred

Hello Roger! Hello Daniel ! I use the hotspot mode with the original Radioddity programming cable (silver colored logo "Radioddity"). The hotspot works with an external antenna UFB ! If I use the original antenna , the transmitter stops after a few seconds !! HF-POWER 50mW !!! :shock: HF radiation -...