(tr)uSDX Forum

Guys, my trusdx has a strange buzzing, especially in the 10m band, has anyone had this problem? one of the videos I connected without the RF card and in the other video with the RF card.
Below are videos about the problem, I've tested it with different sources and also with battery, I've also tested it elsewhere in the residence, I thought it could be some interference from lamps or other equipment

https://www.facebook.com/10000312568625 ... 2609401000

https://www.facebook.com/10000312568625 ... 9513558833

Hello OM,

Oled can be heard on higher bands!
Your videos are no more available.... have you done the always required Oled power modification?
Especially at high frequencies a must!

73 de Chris

dl6sez wrote: ↑17 Mar 2023, 22:57 Hello OM,

Oled can be heard on higher bands!
Your videos are no more available.... have you done the always required Oled power modification?
Especially at high frequencies a must!

73 de Chris

I made the modification to the oled the buzzing seems to be from the oled because with the beta firmware you can turn off the oled, when you turn off the buzzing it improves by 70% but it continues, a question with the internal speaker it is possible to listen with +10 volume here I do not hear anything up to +12 if you increase it distorts everything with an external speaker to hear it well I need to put +11 or +12 in volume.

Hello "reytec79",

the hum on the upper bands was discussed in this thread:

viewtopic.php?t=686

I had the same issues, most pronounced on 10 and 12meters. The 8V OLED mod described in this forum is increasing display brightness and reduces the hum on the upper bands significantly ....

73 de Jens, DL2RMM

DL2RMM wrote: ↑18 Mar 2023, 19:43 Hello "reytec79",

the hum on the upper bands was discussed in this thread:

viewtopic.php?t=686

I had the same issues, most pronounced on 10 and 12meters. The 8V OLED mod described in this forum is increasing display brightness and reduces the hum on the upper bands significantly ....

73 de Jens, DL2RMM

ok thanks for the tips, I'll make the mods to see if it solves the problem.

Solved the buzzing problem by modifying the oled, I didn't use the voltage regulator, I pulled the 12v directly and put a diode to protect the 5V, in addition to the oled becoming bright, it reduced the buzzing in the 10M by 90%