Good Morning
Could someone tell me if it is feasible to build a front end tuner for long wave (say 198khz radio 4) using a op amp as active filter band pass.
It is going to connect to a long wire antenna.(Input) and crystal ear piece (output)
I have a SparkFun Configurable OpAmp Board - TSH82
with has a 3 dB-bandwidth: 100 MHz
the filter needs to have bandwidth of 9khz
I would like to get some gain from it , perhaps x10 to x50
and configure it to work as a precision rectifier at the same time.(not so important, if I can get some voltage amplification)
link to data sheet
https://cdn.sparkfun.com/assets/d/d/3/a/0/tsh82.pdf
many thanks
David H
Could someone tell me if it is feasible to build a front end tuner for long wave (say 198khz radio 4) using a op amp as active filter band pass.
It is going to connect to a long wire antenna.(Input) and crystal ear piece (output)
I have a SparkFun Configurable OpAmp Board - TSH82
with has a 3 dB-bandwidth: 100 MHz
the filter needs to have bandwidth of 9khz
I would like to get some gain from it , perhaps x10 to x50
and configure it to work as a precision rectifier at the same time.(not so important, if I can get some voltage amplification)
link to data sheet
https://cdn.sparkfun.com/assets/d/d/3/a/0/tsh82.pdf
many thanks
David H