Raynald
Addicted Member
I have a remote equipped TPA3116 amp board with Bluetooth, USB and SD inputs (plays FLAC!) that sounds great and even has FM capability. One AK member who has one has soldered an antenna directly onto the board but I would like to have a way of connecting and disconnecting the antenna.
It would be nice to be able to just strip the ends off of one of the many 75/300 Ohm transformers I have lying around and solder that to the bottom. Then I could just hood up whatever antenna I want with the right connector/transformer. The question is, what sort of antenna is likely best for these little guys? 75, 300 Ohm, or something else? Should I consider soldering something else to it?View attachment 947447 View attachment 947448 View attachment 947447 View attachment 947448
Then the question is, where? If you look at the close up picture you can see what is presumably the FM input in the middle. The other user claimed good results by soldering the other end to the point just to the right which is connected to traces on the PCB. There is also another point just above it that does not seem connected to anything. Would that be a better choice? Or do these "tuners" work with only the single FM point attached?
I am only guessing, but maybe the technology here is closer to what you find in cellphones than our conventional FM tuners which is why I suspect the conventional rules may not apply.
Any guidance would be appreciated. Thanks!
It would be nice to be able to just strip the ends off of one of the many 75/300 Ohm transformers I have lying around and solder that to the bottom. Then I could just hood up whatever antenna I want with the right connector/transformer. The question is, what sort of antenna is likely best for these little guys? 75, 300 Ohm, or something else? Should I consider soldering something else to it?View attachment 947447 View attachment 947448 View attachment 947447 View attachment 947448
Then the question is, where? If you look at the close up picture you can see what is presumably the FM input in the middle. The other user claimed good results by soldering the other end to the point just to the right which is connected to traces on the PCB. There is also another point just above it that does not seem connected to anything. Would that be a better choice? Or do these "tuners" work with only the single FM point attached?
I am only guessing, but maybe the technology here is closer to what you find in cellphones than our conventional FM tuners which is why I suspect the conventional rules may not apply.
Any guidance would be appreciated. Thanks!