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Old 17th Jul 2019, 2:02 pm   #39
Mike. Watterson
Heptode
 
Join Date: Dec 2014
Location: Limerick, Ireland.
Posts: 901
Default Re: Aerial for old valve sets.

Quote:
Originally Posted by Station X View Post
In the UK I only recollect seeing vertical BC aerials on schools and industrial premises. For domestic use a longwire in the back garden or yard was the norm. They were ubiquitous, sometimes having corks threaded on them to act as a game guard where there was a pigeon loft nearby.
Also now we have very much more local E field electrical interference: LED SMPSUs, some flat screen TVs radiate the display scanning, SMPSUs in general, the mis-named Powerline Ethernet (they are mains powered transmitters), CFL and now tube Electronic ballasts instead of chokes, mobile phones, laptops, the SMPSUs for those. Also as the capacitors age the interference is worse.
SMPSUs where the filter parts on supply needed to get CSA, EU/CE, FCC etc are later left out as there is no proactive retail sales sample testing. I have photos.
DSL on overhead wires.

So verticals that worked like car aerials do (with a base loading coil) on MW & LW in 1950s and 1960s are useless today. R4LW now only works in the car in the countryside. UK MW after dark now only works in the car in the countryside, even though even a TRF with a loop will work in the house. Though some cattle fencers have annoying Click Click Click.
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