Tuning A Radio
| Field | daily life and entertainment |
| Went Obsolete | Radios used to have analog tuners. Adjusting the frequency to get optimal fidelity in the signal was part of life every time you changed the channel |
| Made Obsolete By | Digital receivers |
| Knowledge Assumed | How stations sound when they are off band |
| When useful | If you ever have to use an old radio |
Radios used to have analog tuners. Every time you changed the channel, you had to optimize the frequency for the new station. Bringing in a weak signal could be a real challenge.
Some radios including the Sony Dream Machine Alarm Clock still use analog tuners.