Welcome to the Lothians Radio Society

Scottish Charity number SC045038

  • LRS Messages of the Day

    Wed 15th Oct 2025: LRS Surplus Sale at St. Fillan’s Church, Buckstone Drive, EH10 6PD. Doors  open at 7.30pm for 8pm start.

    Sat 18 Oct 2025 : 11:00am MoC Goudie Lecture – Britain’s Contribution to Victory in World War II by Roy Johnstone, followed by buffet lunch.

    Tues 28 Oct 2025 – Bletchley Park talk at Newington Library – see News Item, below.

    Sat 1 Nov 2025 – GMRT-2025 – Only 2 places left – book now! See Rallies etc below.

LRS MEETINGS

  • PLEASE NOTE LECTURE TIME IS 11:00 NOT 11:30AM.

  • AUTUMN 2025

    Wed 15th Oct (3rd Wed) – 8pm at St Fillan’s Church, Buckstone Drive – LRS Surplus Equipment Sale. Do not arrive before 7:30pm.

    Sat 18 Oct 2025 : 11:00am MoC Goudie Lecture – Britain’s Contribution to Victory in World War II by Roy Johnstone, followed by buffet lunch.

    Wed 29th Oct – Pub Night at Wee Bennet’s Bar, Maxwell St., Morningside Stn.

    Wed 12th Nov at 14:00h at Napier Univ. Craiglockhart – Technological advances in the development of WW2 airborne radar by Prof. Peter Grant. Click for details.

    Wed 12th Nov at 20:00h at BHH: Radio Safari to Eswatini  3DA0 by Malcolm Hamilton GM3TAL 

    Wed 26th Nov – at BHH: Something to do with Beacons by Brian Flynn GM8BJF.

    Wed 10th Dec:  LRS Xmas Curry:  8:00pm at Kahani Indian Restaurant (BYOB), 10 Antigua Street, after pre-dinner drinks at 7:00-7:55pm at Jeremiah’s Tap, Elm Row. 


  • 1st Oct 2025 – Using Ansys HFSS Software for Amateur Radio Projects by Brian Howie GM4DIJ.

    1st Oct 2025 – Using Ansys HFSS Software for Amateur Radio Projects by Brian Howie GM4DIJ.

    Brian discussed the workings of Ansys HFSS = High Frequency RF Simulation… Read more

  • 24 Sept 2025 – LRS Visit to MoC TV Exhibition & Bletchley Park Talk by Pete GM4BYF.

    24 Sept 2025 – LRS Visit to MoC TV Exhibition & Bletchley Park Talk by Pete GM4BYF.

    Speaker Pete GM4BYF was introduced by MoC Chair, Prof Tom Stevenson. Wed… Read more

  • Sat 1 Nov 2025 – Scottish Microwave Round Table (GMRT-2025)

    The 13th Scottish Microwave Round Table GMRT-2025, will go ahead between 10.30h and 17.00h on Saturday 1st  November at the Museum of Communication, Burntisland, Fife. An interesting programme of speakers has been arranged, microwave test facilities will be provided and there will be an opportunity to buy components and microwave-related items. An optional Dinner will be held in the evening at the Kingswood Hotel. Full info / online registration available at https://gmroundtable.org.uk/or email Colin GM4HWO  gm4hwo@gmail.com. Note the event has a maximum capacity of 50 people and only 2 places left –  book now!

    GMRT-2025 Program published (click).

  • Sun 26 Oct 2025 – Galashiels Rally

    Galashiels Rally – GM4YEQ

    Click for details.

  • The LRS operates GM3HAM/P from a great site near Gatehouse of Fleet in Dumfries & Galloway.

    5-6 July 2025 – VHF NFD – see report in About LRS – Contest / Portable.

    (This photo by Andy MM0FMF is in RSGB RadCom Sept 2025, p.80).

test card

RADIO NEWS, SILENT KEYS and FOR SALE / WANTED

Click on image or “read more” to open full article.

Send items to Alan GM3PSP:

webmaster@lothiansradiosociety.com

Items usually archived as News or Silent Keys in LRS Archive after 1 month.

  • 28 Oct 2025 6:00-7:30pm Bletchley Park illustrated talk by Derek Douglas at Newington Library

    28 Oct 2025 6:00-7:30pm Bletchley Park illustrated talk by Derek Douglas at Newington Library

    Derek Douglas is a member of the Colinton Local History Society. (Free) tickets necessary.  https://www.eventbrite.co.uk/e/bletchley-park-an-illustrated-talk-with-derek-douglas-tickets-1785984741439

    Read more

  • 3 Oct 2025 – 75th Anniversary of the Transistor

    3 Oct 2025 – 75th Anniversary of the Transistor

    The 3rd of October 2025 was the 75th anniversary of the patenting of the invention of the transistor by three […]

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  • 2 Oct 2025 – GM1CNH Norman’s HK Colombia DXpedition

    2 Oct 2025 – GM1CNH Norman’s HK Colombia DXpedition

    Some photos from Norman’s DXpedition to Colombia. (Norman GM1CNH & Peter GM4DTH).   HK3LRB club setting up in park for […]

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There are no current silent key notifications. Click on the heading to see the silent key archive.

  • MyDel 13.8 Volt 30 Amp Switching Power Supply Unit – Dave 6

    MyDel 13.8 Volt 30 Amp Switching Power Supply Unit – Dave 6

    MyDel 13.8 Volt 30 Amp Switching Power Supply Boxed and Unused  ML&s  Price  £80  Only   £40 Tel:  0131 539 2858 Dave […]

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  • 2 ICOM SP-38 Speakers Matching IC-7300 & IC-9700 – Dave 6

    2 ICOM SP-38 Speakers Matching IC-7300 & IC-9700 – Dave 6

    2 x  SP-38  Icom Speakers  Matching  IC- 7300  &  IC- 9700 Boxed as New   ML&s  Price £156 Each             […]

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  • 21 Aug 2025 – Steel Ammo Box – £25 – Pete GM4BYF

    21 Aug 2025 – Steel Ammo Box – £25 – Pete GM4BYF

    For sale: Steel ex army ammunition box. Useful for carrying tools etc. Two handles. 58 x 26 x 26 cm  […]

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  • 17 Aug 2025 – Badger Boards HF Antenna – Norman Stewart GM1CNH

    Badger Boards HF Antenna – wideband folded dipole antenna with balun; N(f) connector; heavy duty centre spacer; termination resistor; 1.5MHz […]

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  • 2 Aug 2025 – ICOM R100 Receiver – Pete GM4BYF

    2 Aug 2025 – ICOM R100 Receiver – Pete GM4BYF

    ICOM – R100 General coverage receiver in excellent condition with all accessories and handbook.  Covers 100kHz to 1.8GHz – AM, […]

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  • 23 & 25 July 2020 – 122GHz – Two Firsts in 3 Days by Brian GM8BJF & Pete GM4BYF / G4BYF – Confirmed by UK Microwave Group

    23 & 25 July 2020 – 122GHz – Two Firsts in 3 Days by Brian GM8BJF & Pete GM4BYF / G4BYF – Confirmed by UK Microwave Group

                                            […]

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  • 21st July 2020 – Website: https://WorldRadioHistory.com

    21st July 2020 – Website: https://WorldRadioHistory.com

     WorldRadioHistory.com Many thanks to Brian GM8BJF who has just reported finding a potentially very useful website: https://WorldRadioHistory.com which provides detailed links […]

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  • 19th July 2020 – GM4DIJ/P in RSGB 70MHz Trophy Contest from nr Stranraer in Galloway.

    19th July 2020 – GM4DIJ/P in RSGB 70MHz Trophy Contest from nr Stranraer in Galloway.

    Brian GM4DIJ returned to his favourite portable location at IO74mu about 8km south of Stranraer, to operate in the 70MHz […]

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  • 22 Sept 2021 – WWI Aircraft Electrical Systems including Radio – Bob Thomson, APSS

    22 Sept 2021 – WWI Aircraft Electrical Systems including Radio – Bob Thomson, APSS

      Bob Thomson of the Aviation Preservation Society Scotland described the work to reconstruct a Sopwith Strutter 1 1/2 aircraft, especially […]

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  • 5th April 2020 – Temporary Q-Codes

    Brian GM4DIJ has just received this from his friends in the SOC – Second-Class Operators Club: From SOC mailing listTemporary […]

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  • 01 April 2020 – HAM COVID-19 Guidelines

    EFFECTIVE APRIL 01, 2020. Amateur Radio operators are ordered to strictly observe the Coronavirus mitigation guidelines as they apply to amateur […]

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  • 8 March 2020 – GM4DIJ 23cm DXpedition to Stranraer

    8 March 2020 – GM4DIJ 23cm DXpedition to Stranraer

      Brian Howie GM4DIJ took part in the UK Microwave 23cm contest on Sunday 8th March from a site near […]

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  • 17 March 2020 – LRS MEETINGS POSTPONED UNTIL FURTHER NOTICE

    In view of the current Coronavirus pandemic with the risk of infection being passed from one person to another when […]

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  • 11th March 2020 – How Not to Sail to the Faeroe Islands – Geoff Crowley MM5AHO

    11th March 2020 – How Not to Sail to the Faeroe Islands – Geoff Crowley MM5AHO

    Geoff’s yacht Contender approaching Rockall during a charity sail there in 2018. At the meeting on March 11th our good […]

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  • 26 Feb 2020 – The Raspberry Pi Explained for Radio Amateurs – Video – Mike Richards G4WNC

    26 Feb 2020 – The Raspberry Pi Explained for Radio Amateurs – Video – Mike Richards G4WNC

    Photo courtesy RadCom The RSGB Convention video “The Raspberry Pi Explained for Radio Amateurs” by Mike Richards G4WNC was shown  […]

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  • 12th February 2020 – Robot Wars + Rampaging Chariots – Dr Roger Hill

    12th February 2020 – Robot Wars + Rampaging Chariots – Dr Roger Hill

    At the LRS meeting on 12th February Dr Roger Hill talked about “Robot Wars + Rampaging Chariots  and showed videos […]

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  • 22nd Jan 2020 – Aircraft Scatter & Useful Test Equipment for it – Pete Bates GM4BYF

    22nd Jan 2020 – Aircraft Scatter & Useful Test Equipment for it – Pete Bates GM4BYF

    Pete Bates GM4BYF talked about Aircraft Scatter Communication and Useful Test Equipment for it at the  meeting on 22nd January 2020.  […]

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