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European Pirates and Private Stations / Re: World Music Radio 6160//3975 AM 2034 UTC 24 MAY 2024
« on: May 25, 2024, 1127 UTC »
World Music Radio or Weekend Music Radio?
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I prefer top loading with a coil or even a combo of that and a T top hat or inverted L configuration, inductor at the 90 degree bend. Only drawback is the added top weight and the coil being much higher inductance compared to having it near the bottom tuning section when using a shortened antenna. Also getting the inductor turns right can be a pain since you have to take down and put up the contraption until it's tuned. This can be used as a single vertical antenna this way without needing to tie off wires at the top to a structure if desired.I designed and built a MW aerial many years ago that was 2 vertical wires, about 20 inches apart, held up by 3 sets of 2 top wires, also 20 ins apart, which went to 2 trees and the house chimney. It was only about 35 or 40 feet high. It worked quite well on 846 kHz (I'm in Europe). I moved the coil to the top and a friend a couple of miles away noticed an increase in signal strength.
When I've tried this I notice a considerable improvement with broadcast coverage compared to bottom loading. Has something to do with current distribution in the antenna but haven't had my coffee yet.
As Charlie_Dont_Surf recommended though your standard shortened T antenna (or capacity hat) just "works" and is even used down in the longwave band where shortened antennas are a must.
Of course getting as many radials down is the other functional section of the antenna and is equally important. Bare minimal tie to any large metal items earthed and experiment with that if you don't have the space or wire to put down over the ground.
It still amazes me how much people can pinch out of those pea shooter part 15 setups too. You'd think at some point there would be diminishing results but I guess sometimes every little thing in the overall antenna system does add up
It has to be a KiwiSDR brand SDR, yes.Ok, thanks. At least I know now where to start.
Exactly.Thanks Ray, is there any reason in particular why quite a few of the TXs for pirate/semi pirates are based in Ireland? I
Pirate stations are also illegal in Ireland, but the authorities are not prosecuting them as long as they are not disturbing anything or getting a complaint from foreign countries. Two stations were raided in 2022 after complaints for disturbing NATO frequencies.
ICoast FM from The Canary Islands used to use 6205 years ago. The transmitter was not in The Canaries though.
BTW, I had a booming, broad AM signal on 6205 in Wales that I think was Laser in the same time frame? The SDR listed it as being a station from the Canary Island's but I'm not so sure?