ZL1BPU

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.

Show Notes

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Murray passed away in April 2022. I was contacted by his nephew, Ashley Kirk, who sent me thislink 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

Current Rigs:

Icom IC-7100
Transworld TW100 (1987)
Icom IC-7200 (in the caravan)
Kenwood TKM-707 with homebrew PA (automated FSQ station),
JRC NMA-73D (MEPT)
Southern Avionics SC1000USCG (modified LF/MF transmitter).

Murray’s Receiver Collection

Harris 505A military monitoring receiver 1971
Drake R8A 1995 diode mixers at front end
Plessey PR152 – 1962 germanium transistors

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.

Piccalo Mode

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

Music Links:

Advice to new and returning hams:

Get on the air
Join the radio club
Talk to younger club members about digital modes

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