At the meeting on 24th April 2019 Terry Martini-Yates of Ferrograph World, based in Rosyth, talked about "Writing in Iron" - magnetic sound recording - demonstrating several recorders and playing a number of historical recordings, including John Clarricoats G6CL during a visit to Edinburgh in 1961.

Terry writes: "A potted history of the development of the magnetic audio recorder from Valdemar Poulson’s invention of the magnetic wire recorder, the steel tape based Blattenerphone, its further development at AEG in Germany and its use by the 3rd Reich in Nazi Germany for war propaganda, to the overnight sensation it created in post-war America, when an enterprising soldier liberated two of the secret German Magnetophon reel to reel tape machines and 50 reels of recording tape. 

Terry is the author of 'Built Like a Battleship!, A History of the Ferrograph Company'.   

See also his website Ferrograph World (click)

Full report (click).

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The LRS Spring Surplus Equipment Sale was held on 10th April 2019 at St. Fillan's Church, Buckstone. This sale included the remainder of the many Silent Key items from John Buchanan GM8BYF-SK.  

After the sale there was a raffle for non-vacuum 'bottles' run by LRS treasurer, Peter Dick GM4DTH.

Click for Full Report

Archer Magic Lantern

At the meeting of the LRS on 13th March 2019 our good friend Winnie Stevenson from the Museum of Communication presented "Phantasmagoria, a traditional magic lantern show". 

 A most enjoyable evening! Many thanks to Winnie.

Click for Full report.

 

At the meeting of the LRS on 27th March 2019 Prof Win Rampen, the Chair of Energy Storage at Edinburgh University and the former MD of Artemis Intelligent Power Ltd, talked about Energy Storage. He wrote:

"For the past 100 years or so, the world has been misusing fossil fuels from the Carboniferous period about 300 million years ago by digging them up and burning them. We have been using them at a rate of 1 million years to 1 year, which is scary. What we should be doing is using the sun's energy in the year that it is provided to us, and we have a long way to go to achieve that.

So the talk will be about renewables in general but more specifically about solving the mismatch between the uncontrolled delivery of power and the equally uncontrolled user demand. I shall be talking about how we can integrate renewable energy into the grid to displace fossil fuels - which Is where energy storage comes in!"

Click for Full Report with link to youtube video.

On 27th Feb 2019 Norrie Stewart GM1CNH gave an illustrated talk on Amateur Radio Operating in Colombia as HK3/MM0BMG. Having travelled to Colombia many times since 2010, in 2018 he decided to take radio gear with him. This is how he got on...

Self-taught in Amateur Radio while at school and first licenced in 1983 with a class B licence GM1CNH. In 1997 passed the 12 wpm Morse test and gained a class A licence MM0BMG. Worked in the aerospace and defence industry since 1986 on airborne fire control and surveillance radar systems for various fixed wing and rotary wing platforms.

Norrie with his portable vertical aerial, which he used mostly on 20m during his trip to Colombia.

Click for Full Report with all slides.