I have a pair of ultrasonic sensors that have a frequency of 165 kHz, run at 12-13 VDC, and ~12 mA. I was told by the manufacture that I would need a pre-amp device to amplify the signal at the receiving side because my signal was going to be attenuated. I was wondering if I could use the board of the HC SR04 to mount my transducers? If so, what components will I need to replace in order to increase the frequency range from 40 kHz to 165 kHz? If I can't, do you guys have any suggestions?
[Note: I do not have a datasheet for the transducers, the manufacture lent the transducers for my project, i will have to return them by the end of the project]
Thank you for your time, any help will be really appreciated.