Comments by "Bond25" (@Bond2025) on "A Deserted Cold War Radio Relic At Proctor Heights" video.

  1. In the 90s they might, but all my cars have had the radio aerials in the rear window or actually as part of the heater element in earlier ones. My current one has two elements above the heated window for DAB and one for VHF, both horizontal which is annoying. I have to be careful with choice of car camera or it generates enough RF to knock the radio off! The Blackview doesn't as it links the front and rear cameras with coax and cases are screened. I don't like tilted aerials, it is not that much more expensive to fit two beams or get a circular polarised aerial. That can be as simple as the type Juice FM/Capital in Liverpool had on the cathedral, it was a dipole that bent around in a square shape to give horizontal and vertical. No idea on the make. That is more efficient, but needs the power doubling to it in order to provide the same as what it would be on a single antenna because of the -2.5dB gain. Maybe that's why so many use the lazy method of putting the aerials at 45degrees. The other problem with this is loss, cross polarisation loss is 20dB or more, so with the tilted one, you're always going to have a 10dB loss between your vertical and horizontal and a slanted aerial. I would always go for two aerials and give vertical and horizontal and turn the power up a bit, depending on the licence! Dipoles could be spaced from the pole to use it as a reflector too. It all depends on what's required.
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