Readers of a certain age will remember when you'd have to adjust the bunny ear antenna sticking out of the top of your TV or, worse, climb up to the roof and ... uses a 4G/5G LTE filter to screen ...

Using this antenna with a height of just 40mm, in particular double-decker trains or trains normally travelling in tunnels with tight gauges, can be upgraded to the 4G/LTE standard. This ...