Episode 422 - Murray Greenman - ZL1BPU (SK)
Murray Greenman, ZL1BPU, now a silent key, was my guest in Episode 71 more than 5 years ago. Murray was famous in amateur circles for the development of many popular digital modes. I spoke to Murray over Skype from his home in New Zealand. The body of Murray’s work, spanning over 20 years, includes a book, Digital Modes For All Occasions, and on-line content that is very detailed and complete. Murray passed away in April 2022. May his memory be for a blessing.
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Murray passed away in April 2022. I was contacted by his nephew, Ashley Kirk, who sent me this link to the video of his funeral service. His memorial service is a real tribute to Murray, and a wonderful way to remember him.
Auckland Grammer, Club Station ZL1AGT
First interest: 1962, Age 16
Mentors (Elmers): Bill Powers, ZL1FI - club trustee
Friend and Mentor: Gary Bold, ZL1AM
First License: ZL1TCL, Grade 3 (VHF Only), Age 20
Upgrade: 1983, Grade 1, similar to the American Extra Class
First Rig: Plessey converted AM taxi radio to two meters
Murray’s Receiver Collection
Murray’s Web Site
New Zealand Association of Radio Transmitters
Favorite Operating Mode: FSQ, close second is Hellschreiber
Nino Porcino, IZ8BLY - wrote first MFSK software with Murray
Con Wassilieff, ZL2AFP - wrote the code for most of the modes. A collaboration between he and Murray.
MFSK - Multi Frequency Shift Keying
MFSK is ideal for “long path DX” - has to be sensitive, doppler shift
Long Path Propagation
Advice: Use a mode that is appropriate for the conditions. FSQ is best for 40 and 80 meters.
Used Rigs for Digital Modes:
Kenwood TS-120 and TS-130
Advice: Ask the younger hams about the digital modes
Advice for QRP operators: FSQ on 40 and 80 meters
Digital Modes for All Occasions, ISBN 1 872309 82 8, By Murray Greenman, Amazon may not have this book, but it is available from the Radio Society of Great Britan bookstore. Amazon Link
ZL1BY on the Ionosphere
Pathsim AE4JY Simulator Software
Software Defined Radio (SDR) will spur the development of new digital modes
MEPT - Manned Experimental Propagation Transmitter
QRSS3 on Argo Software
Rubidium 10 MHz Frequency Standard on Ebay
GPS 10 MHz Frequency Standard on Ebay
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Icom IC-7100 HF/VHF/UHF Transceiver