Very bad receiving
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- Posts: 2
- Joined: 05 Nov 2022, 09:47
Very bad receiving
When powered by 13.8V, the received noise is so strong that it makes it impossible to hear a useful signal. However, the problem disappears if I use 5V from the USB. The noise emits directly from the uSDX during operation, and looks as follows on the waterfall https://i.imgur.com/dknrJou.png
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- Posts: 180
- Joined: 01 Jan 2022, 16:30
Re: Very bad receiving
Did you do the LCD mod to not use the charge pump? If no, you should. If yes, you can also consider my variation on the mod for a brighter LCD, search the forum is that interests you.
73,
Robert, WA2T
73,
Robert, WA2T
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- Posts: 2
- Joined: 05 Nov 2022, 09:47
Re: Very bad receiving
I don't quite follow you. What does this have to do with radio interference when the power is turned on?
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- Posts: 133
- Joined: 21 Mar 2022, 00:04
- Location: Illinois, USA
Re: Very bad receiving
The charge pump on the display can add quite a bit of internal RF noise.
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- Posts: 57
- Joined: 20 Dec 2022, 20:51
Re: Very bad receiving
This guy LY2H makes a comparison between the truSDx and the QCX. I feel he is unnecessarily negative. He points out the RF noise on the truSDx:
https://www.youtube.com/watch?v=Wbiu9jeypFE
Is this noise from the charge pump? Is the LCD mod completely explained?
73 de Constrainted
https://www.youtube.com/watch?v=Wbiu9jeypFE
Is this noise from the charge pump? Is the LCD mod completely explained?
73 de Constrainted
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