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Welcome to the Lothians Radio Society

23 Nov 2022 - Ed Bain GM4AIS - AI in Diagnostics

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Written by Alan GM3PSP

 

Artificial intelligence has been around for over 60 years.  In reality it covers various techniques.  One of them, Expert Systems (or Knowledge-based Systems) was introduced in the 1980s, and by the start of the next decade was in significant use in many domains.  We look at some practical engineering applications, mainly in diagnosing faults. Click for Report.

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9 Nov 2022: David Stockton GM4ZNX - Limiting Factors in Receiver Design over the Decades

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Written by Alan GM3PSP

David writes: It’s quite simple if unusual. All the marketing departments of all the component, system etc manufacturers trumpet what their products CAN do. So let’s turn that on its head and talk about what things CANNOT do. The limitations of available technologies and parts act to steer progress in ways that can make clearer than the capabilities. It’s a sort of DeMorgan’s theorem shifted outside the world of Boolean variables. But it’s a good mental trick to make complicated-looking things look more obvious, or look worse. It’s worth trying just for those cases where it pays off. 

(No report available).

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30 Oct 2022 - LRS Members at Galashiels Rally

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Written by Alan GM3PSP

Mike MM0MLB, Brian GM4DIJ, Colin GM4HWO / Brian GM8BJF, Norrie GM1CNH.

The Canny Man. (Gateshead).

Click for more photos taken by Colin GM4HWO

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22 Oct 2022 - GMRT-2022 - Scottish Microwave Round Table

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Written by Alan GM3PSP

GMRT-2022 was held on 22nd October at the Museum of Communication in Burntisland.

A preliminary report with photos by John GM8OTI, is now up on the LRS site (click).

Also click for GMRT website official report.

Mark GM4ISM won the Constructors Trophy.

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19 Oct 2022 - LRS Autumn Surplus Equipment Sale

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Written by Alan GM3PSP

Colin GM4HWO opened the sale.

 

Lots of goodies - and cheap!

Click for full report with many photos.

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12 Oct 2022 - Brian Flynn GM8BJF - "Remote Radio"

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Written by Alan GM3PSP

 

Brian described the equipment he designed and built to provide remote operation on 2m (and HF) from a poor location (Peebles!), with demo QSOs with GM8PKL & GM4COK/DU1. 

 

Hardware in rack case.

Click for full report with slides.

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28 Sept 2022 - LRS Visit to MoC for 2022 Exhibition

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Written by Alan GM3PSP

 

LRS members enjoyed the MoC exhibition "100 Years of Broadcasting in the UK". 

Early Baird mechanical TV receiver.

Click for Full Report with photos. 

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14 Sept 2022: Pres Address - Colin Wright GM4HWO - "Sparks at Sea"

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Written by Alan GM3PSP

Colin's talk was about his journey into Amateur Radio, his time at Leith Nautical College, his time at sea, including the two trips that he made in the role of the traditional radio officer, and the move to Electro Technical Officer (ETO) / Global Maritime Distress & Safety System (GMDSS) ~1995. Click report with slides. 

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  1. 4 Sept 2022 - Brian GM4DIJ in RSGB 2m Trophy from Sandhead, D&G.
  2. 12 Aug 2022 - Cockenzie & Port Seton Mini-Rally
  3. 16 July 2022 - Brian GM4DIJ in RSGB 4m Trophy from Ardwell, D&G.
  4. 1-3 July 2022 GM3HAM/P - RSGB VHF-NFD - Gatehouse

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