| Electronics > Projects, Designs, and Technical Stuff |
| AM FM Tuner .? |
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| Hextejas:
Since I am almost finished with my preamp, phono stage, and amp, I would like a recommendation for a tuner as I realized that I still like to listen to the radio. Thanks. |
| Zero999:
It depends on your requirements. No doubt there are plenty of tuner ICs available, many of which require an MCU, or you could do it the old way, making a superhet using discrete components and op-amps. |
| amyk:
--- Quote from: Zero999 on February 20, 2019, 11:32:31 am ---It depends on your requirements. No doubt there are plenty of tuner ICs available, many of which require an MCU, or you could do it the old way, making a superhet using discrete components and op-amps. --- End quote --- You can get single-chip radios too (nothing but a few passives required), but I suspect the OP wants to make a discrete one. |
| vk6zgo:
--- Quote from: Zero999 on February 20, 2019, 11:32:31 am ---It depends on your requirements. No doubt there are plenty of tuner ICs available, many of which require an MCU, or you could do it the old way, making a superhet using discrete components and op-amps. --- End quote --- Don't use op-amps, they are not optimised for the job. There are many specialised ICs, or you could build it "retro style" with FETs or BJTs. Remember, an AM/FM radio is effectively two radios, as the operating frequencies, IF bandwidths, & demodulation methods of the two services are so different. |
| Richard Crowley:
AM ("MW" in some places) and FM radio technology lives on in car radios even after it is disappearing elsewhere. Building a proper broadcast (AM or FM) receiver is hardly worth trying here in the 21st century (IMHO) because the traditional technology of multi-stage IF strip requiring special transformers and proper RF circuit construction requiring specialized test gear, etc, etc. Modern vehicle radios are made with specialized IC technology that eliminates most of that complex circuits of traditional receivers. I have a similar project and have decided to just use a ready-made module for AM/FM reception. These things are avilable fully assembled and tested for far less than the cost of buying the individual components (if you could even find them at retail). For example, a separate module like this... https://www.amazon.com/Bluetooth-receiver-Digital-digital-Playback/dp/B073PQWXMK Or a panel-mount module for integration into the whole project... https://www.amazon.com/CTYRZCH-Bluetooth-Decoding-Module-Remote/dp/B07H2W2JX2 |
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