When comparing the 20-meter long antenna on my roof and the 1.2-meter pull-out antenna at the window, the difference is not that significant. There won't be a situation where the rooftop antenna receives signals but the window antenna doesn't. In fact, the rooftop antenna enhances the signal while also increasing background noise and interference, resulting in similar listening effects. A loop antenna is also a good option, but it's best to avoid using active ones, as they amplify noise.