Comments by "Bond25" (@Bond2025) on "Was This 393 Mile Railway An Antenna To Control Nuclear Submarines?" video.

It is quite interesting to experiment with things like this. I have stopped in Wales and loaded up a wire fence through an impedance matcher on HF. On 160M and 80M I was getting loads of contacts. That was on 5 Watts. The fence must have been a mile long on a hill. I am very much in to "stealth antennas" and have a full set up for HF to UHF, no one spots them unless they really know what to look for. I've even used a wire clipped on the back of a gutter around as house as a loop antenna on HF. I also tuned up a length of 75ohm coax going up a wall to a pole and TV antenna on 10M. Aerials don't have to be high up for HF, you can run them 2ft off the ground and get great results.
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He is probably referring to CAVE RESCUE RADIO systems. A little known fact is that only certain frequencies are any good for cave rescue! VLF too. They are often tested in old mines and caves for ground penetration. Idea for another video there!
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It's the aerial they allow to float on the surface of the water, it's extremely long and can't be detected.
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@ianmason. You should see how many nuclear fallout shelters there are! I have built and installed lots of equipment in them since the 80s. If anyone is in the North West, there is one under the council building extension in Ellesmere Port town centre. Access via a door from the car park that looks like it goes in to the offices, or via a manhole in the car park that has a 5ft diameter concrete tube running about 20ft on an angle. Inside is a submarine door as I call it - the room is tiled and has a brush with hose attached on the wall ! Down there is a command and control centre, air/water purifiers and storage and a diesel generator and storage. There is a room with bunkbeds and a kitchen, toilets and storage. This was completed in around 1991. Access down the main stairs leads to a thick door hinged on the right. On entering the shelter, rooms to the right are beds, then the escape tunnel and tiled room with showers, toilets and a kitchen area. On the left after entering from the main door are air purification, water treatment and storage, generator. Straight ahead is a large room of about 20ft by 25ft with various computer equipment and radios. This has all been updated since. Some of the aerials on the council buildings were connected at one point. Many shelters existed like this, but were demolished. One or two still exist.
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Your lecturer was correct. It was used for years. Hidden in plain sight, no one would suspect a huge long powerline was a VLF antenna too.
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It would be possible to use it for RX, but due to public safety not on TX. There would be issues with joins in lines, breakages, constant impedance changes etc. What you might like to look at is how HV electrical cables were used as VLF aerials. All those pylons... Many things are "hidden in plain sight". Some fields have miles and miles of fences, trying measuring for RF on them with a frequency counter etc.
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For years, many years, the National Grid provided a service whereby you could carry communications along their pylon network. They come clean and started saying they run fibreoptics on them a few years ago, saying it was for Internet. When pylons were installed with mains cables they also had telephony cables running with the earth wires.
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So he wasn't working at Rugby, didn't help pirate stations, isn't your friend and you have no contact with him - you just "believe" all that. Any time someone says "I believe" or "he couldn't talk about it" we know it's rubbish. Don't forget, it was mainly radio amateurs that worked at Rugby and all well known. Backgrounds were fully checked and any activities of a criminal nature would mean termination of employment. I know you want to tell us all about pirate stations on ships, but that's not what this video is about.
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Overhead mains cables as in National Grid power distribution via those lovely pylons...hidden in plain sight.
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It's no longer used!!!
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