For those of you who are new to over-the-air terrestrial television, note the following warning when re-scanning.The Virtual channel may actually broadcast on a different Radio Frequency (RF) channel than its virtual channel, such as broadcasting on RF channel
When you re-scan your TV or converter box, you end up erasing the previous found links between the virtual channel and RF channel. For example, if you scan your TV and successfully receive channel 39, but can't get channel
, you would move your antenna in another direction then have to re-scan to pick up
However, you might discover you lost channel 39; your TV has reset channel 39 to its default RF
when you rescanned the second time. Your TV is now looking for channel 39 on RF
not on RF
Some TVs have a manual
RF channel edit process which is preferable in situations like this. Otherwise it is a tedious back and forth task.