DX4WIN.CTY #23.9 – 09 March 2023

Version entity is Galapagos Islands, HC8 Entities:      402 Prefixes:    4,665 Callsigns:  31,156 Managers:   96,688 Addresses:  13,423 [download] DX4WIN 8.05 and earlier [download] DX4WIN 9.01 and later [Entities] [Prefixes] [Callsigns] [Managers] [IOTA] Entities Prefixes TO and TX ending 29 February 1992 are both France, F Callsigns … Continue reading

N3FJP – 09 March 2023

Version entity is Madagascar, 5R ADIFCnt.txt has 340 DXCC entities and 62 deleted DXCC entities. arrlpre3.txt has 24014 prefix+callsign mappings. cqwwpre3.txt has 24165 prefix+callsign mappings. [download] Added Prefixes/Callsigns: 3Y/ZS6GCM is Bouvet, 3Y/B TX5L is New Caledonia, FK TX7K is Marquesas … Continue reading

Big CTY – 09 March 2023

Version entity is Madagascar, 5R [download] Added/changed Entities/Prefixes/Callsigns: A60AP/0, A60AP/1, A60AP/2, A60AP/3, A60AP/4, A60AP/5, A60AP/6, A60AP/7, A60AP/8 and A60AP/9 are all United Arab Emirates, A6 TX5L is New Caledonia, FK TX7K is Marquesas Islands, FO/m GB1PAT and GB2PAT are both … Continue reading

CTY-3309 – 09 March 2023

VER20230309, Version entity is Sudan, ST Download: [ CTY-3309 | CT8 | Win-Test | WriteLog | XML ] Added/changed Entities/Prefixes/Callsigns: EA9PD/P is Ceuta & Melilla, EA9 TX5L is New Caledonia, FK GB1PAT, GB2PAT and GB8KC are all Northern Ireland, GI … Continue reading

5 June – Node-RED for radio amateurs by Mike Richards, G4WNC

Mike’s presentation Node-RED is a visual programming language that is very powerful but surprisingly easy to use. The language has matured over recent years and has the potential to be a valuable tool for radio amateurs. In this talk, Mike will provide an introduction to Node-RED programming techniques. He will conclude with a live demonstration […]

PTT Voice Mirrors (Part 3): Circa 1970’s

Many thanks to SRAA contributor, Dan Greenall, who shares the following recording and notes:

Broadcaster: PTT voice mirrors from the 1970's Part 3

Frequency: various

Recption location: Ancaster, Ontario, Canada

Receiver and antenna: Hallicrafters S-52 using a longwire antenna

Mode: Single Side Band

Notes:
Point to point stations were commonly found on shortwave in the 1970's outside of the normal SWBC bands. They could often be heard transmitting a repeating test message so a receiving station could tune them in prior to conducting radiotelephone traffic.

1.  U.S. Army radio station ACA, Panama Canal Zone

2.  Oostende Radio, Belgium

3.  PTT, Dakar, Senegal

4.  Reugen Radio, German Democratic Republic

5.  Venezuelan Telephone Company, Caracas

6.  French Telecommunications Service, Djibouti

7.  British Post Office Phototelegraph Network (no location given)

8.  Canadian Overseas Telecommunications Corporation, 

      Yamachiche, Quebec

9.  ENTEL, Bogota, Colombia

10.  Belgian Telegraph and Telephone Administration, Brussels

11.  British Post Office, London, England

12.  France Cables and Radio Company, Fort Lamy, Chad

13.  PTT, Blantyre, Malawi

14.  East African External Telecommunications Company Limited,

        Nairobi, Kenya

15.  International Telecommunications Corporation, Abidjan, Ivory Coast

16.  Office Congolais des Postes et Telecommunications, Kinshasa,Democratic Republic of the Congo

15 May – The T41-EP ALPS: A High Performance CW Decoder by Jack Purdum, W8TEE and Al Peter, AC8GY

The presentation Jack and Al collaborated to build the T41-EP, a 7 band, 20W, CW/SSB SDR transceiver and this presentation is chiefly about how they developed the high performance CW decoder. Jack and Al co-authored the Software Defined Radio Transceiver (2022) and Microcontroller Projects for Amateur Radio (2019) books and numerous articles and presentations. They are also […]

Further 2022 Convention presentations released

We have released two more 2022 Convention presentations for radio amateurs to enjoy. In “Antennas for an effective contest station” Lee Volante, M0MTN reviews many of the options available to the HF contester when making antenna choices. He considers how antenna type, height, location and available resources have to be balanced with the type of contest […]

YOTA Subregional Camp — Spain 2023

It is our great honor to announce our next YOTA Subregional Camp coming up shortly. We are very grateful to have URE aboard in organizing this edition in Spain. The event itself will be held from 30th April to 2nd …

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