UK Vintage Radio Repair and Restoration Powered By Google Custom Search Vintage Radio and TV Service Data

Go Back   UK Vintage Radio Repair and Restoration Discussion Forum > General Vintage Technology > Websites

Notices

Websites Found an interesting website? Post the details here and share it with the rest of us. Please stick to websites that are in some way related to our hobby/interest.

Closed Thread
 
Thread Tools
Old 17th Mar 2021, 12:28 pm   #1
chriswood1900
Octode
 
Join Date: Jan 2007
Location: Dorridge, West Midlands, UK.
Posts: 1,474
Default LW radio item on Abandoned Engineering S7 E4

I was catching up on some programmes and came across this item about the Japaneses long wave transmitters built around 1918 that consists of three towers made of concrete, standing near Saikai Bridge. It is said that these towers relayed the cipher that initiated the Pearl Harbor attack which set off the outbreak of the Pacific War. We all know how that ended!
These towers with a height of 136 meters stand on the vertex of a 300 meter-equilateral triangle took five years to built starting with Taisho 7(1918).
You can read more here:- https://travel.sasebo99.com/en/todo/todo_1470
Abandoned Engineering appears on the Yesterday tv channel.
__________________
Chris Wood
BVWS Member
chriswood1900 is offline  
Old 23rd Mar 2021, 9:18 am   #2
Jon_G4MDC
Nonode
 
Jon_G4MDC's Avatar
 
Join Date: Nov 2015
Location: Welwyn Garden City, Hertfordshire, UK.
Posts: 2,013
Default Re: LW radio item on Abandoned Engineering S7 E4

I think it's a shame that in almost a week no-one has commented.
I had no idea about that Chris. Most interesting + thanks.
Jon_G4MDC is offline  
Old 23rd Mar 2021, 5:07 pm   #3
dave walsh
Dekatron
 
Join Date: Jan 2006
Location: Ramsbottom (Nr Bury) Lancs or Bexhill (Nr Hastings) Sussex.
Posts: 5,814
Default Re: LW radio item on Abandoned Engineering S7 E4

Hi chaps. You are not being ignored Chris. I flagged up that program from the Yesterday Channel on February 3rd [under the heading "Radio Beacon"] but in General Vintage Technology! "Websites" probably doesn't get the same level of attention I suspect. I'd thought it might be related to those Japanese signals but couldn't be sure. It was intriguing as there was little other info.
Abandoned Engineering is indeed a very interesting series!

Dave W

Last edited by dave walsh; 23rd Mar 2021 at 5:15 pm.
dave walsh is offline  
Old 11th Apr 2021, 11:54 am   #4
dave walsh
Dekatron
 
Join Date: Jan 2006
Location: Ramsbottom (Nr Bury) Lancs or Bexhill (Nr Hastings) Sussex.
Posts: 5,814
Default Re: LW radio item on Abandoned Engineering S7 E4

I've just noticed that this program from the Yesterday Channel is on again tonight at 6pm, if any one wants to catch it

Dave W
dave walsh is offline  
Old 11th Apr 2021, 12:00 pm   #5
Jon_G4MDC
Nonode
 
Jon_G4MDC's Avatar
 
Join Date: Nov 2015
Location: Welwyn Garden City, Hertfordshire, UK.
Posts: 2,013
Default Re: LW radio item on Abandoned Engineering S7 E4

That could be good. many thanks.
Jon_G4MDC is offline  
Old 11th Apr 2021, 12:41 pm   #6
turretslug
Dekatron
 
turretslug's Avatar
 
Join Date: Nov 2011
Location: Surrey, UK.
Posts: 4,385
Default Re: LW radio item on Abandoned Engineering S7 E4

There was another Abandoned Engineering programme that featured the Warsaw Radio mast and its subsequent collapse- this quarter-wave 227kHz (subsequently 225kHz in accordance with Geneva Plan multiple-of-9 channel spacing) vertical was the world's tallest structure for 17 years and collapsed during guy-wire replacement in 1991. It stood on an insulating base rated to 120kV, and lightning protection came from a shorting bar connected to an RF node partway up the mast.
turretslug is offline  
Old 11th Apr 2021, 11:57 pm   #7
turretslug
Dekatron
 
turretslug's Avatar
 
Join Date: Nov 2011
Location: Surrey, UK.
Posts: 4,385
Default Re: LW radio item on Abandoned Engineering S7 E4

D'uh- I should have said that the Warsaw Radfio mast was a half-wave structure, not quarter-wave (hence the extreme height). How embarrassingly basic.
turretslug is offline  
Closed Thread

Thread Tools



All times are GMT +1. The time now is 11:14 am.


All information and advice on this forum is subject to the WARNING AND DISCLAIMER located at https://www.vintage-radio.net/rules.html.
Failure to heed this warning may result in death or serious injury to yourself and/or others.


Powered by vBulletin®
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
Copyright ©2002 - 2023, Paul Stenning.