Loud 'click' after speaker is turned off // Recommended power supply?
Posted: Mon Jan 09, 2023 4:43 pm
Hi all!
A couple weeks ago I received my V5 MD-9600 and I've been testing the firmware, the radio gets excepcionally better with the open firmware.
However, each time a 'beep' is played, or after receiving a signal (aka, each time the speaker is turned off), you can hear a loud 'click', especially at low volumes (as I'm using it at home, always, because even the lowest volume is pretty high). I'm convinced this is a hardware issue due to bad design, but is there any way to solve it, even if a hardware modification is needed? A solution I can think of could be adding a relay that switches off the speaker just before the speaker amp is turned off, but that would come with its own issues (I'd need to find an available GPIO pin, modify the source which is not yet published, and also you'd still hear the relay 'click', so that wouldn't be much of a solution ). I don't know if there's any way to solve this in the firmware or with any other slight hardware modification.
Another doubt I had is if anyone knows how much current does the radio need to transmit at full power. So far I've been using an old 1.5A power supply I had at home and obviously you can't get much Tx power with it, but it served its purpose just for trying out the firmware and playing around with it. If anyone can recommend a simple power supply (not a fancy big bench supply, just a reliable one that does the job), I'd really appreciate it. I'm planning on buying a Xiegu G90 in the near future (I think I'm starting to have way too many radios ) and that one needs 8A, so anything that could work for both would be great.
Anyway, thanks for the effort porting the fw to the MD-9600 and MD-UV3x0. I hope there are plans in the near future to release the source code now that it's starting to look really stable (couldn't find any bugs myself), I'd love to check it out and learn from it, as I did with the DM-1801 code.
73
A couple weeks ago I received my V5 MD-9600 and I've been testing the firmware, the radio gets excepcionally better with the open firmware.
However, each time a 'beep' is played, or after receiving a signal (aka, each time the speaker is turned off), you can hear a loud 'click', especially at low volumes (as I'm using it at home, always, because even the lowest volume is pretty high). I'm convinced this is a hardware issue due to bad design, but is there any way to solve it, even if a hardware modification is needed? A solution I can think of could be adding a relay that switches off the speaker just before the speaker amp is turned off, but that would come with its own issues (I'd need to find an available GPIO pin, modify the source which is not yet published, and also you'd still hear the relay 'click', so that wouldn't be much of a solution ). I don't know if there's any way to solve this in the firmware or with any other slight hardware modification.
Another doubt I had is if anyone knows how much current does the radio need to transmit at full power. So far I've been using an old 1.5A power supply I had at home and obviously you can't get much Tx power with it, but it served its purpose just for trying out the firmware and playing around with it. If anyone can recommend a simple power supply (not a fancy big bench supply, just a reliable one that does the job), I'd really appreciate it. I'm planning on buying a Xiegu G90 in the near future (I think I'm starting to have way too many radios ) and that one needs 8A, so anything that could work for both would be great.
Anyway, thanks for the effort porting the fw to the MD-9600 and MD-UV3x0. I hope there are plans in the near future to release the source code now that it's starting to look really stable (couldn't find any bugs myself), I'd love to check it out and learn from it, as I did with the DM-1801 code.
73