1968 Longley-Rice model in Fortran IV
I just subscribed to the list last week, still getting a feel for topics and hope this one is of interest. I was recently looking into the RF propagation model by Anita Longley and Phil Rice, still widely used after a half century. Going from one old report to another, I found the original 1968 CDC-3600 Fortran IV source code as an appendix in a report. After correcting the many OCR errors with O/D/0/Q, I/l/1 and similar, I posted about it to the PiDP11 mailing list. Several folks joined in and the code now runs on several old OSes in addition to F77 if you want to run it on linux. The output is, well, admittedly not as fun as a game, but if you want some contemporary code for your retro computing or happen to also be an EE working in RF, it is at https://udel.edu/~mm/itm/ Merry Christmas! Mike Markowski
On 12/25/22 09:25, Mike Markowski via vcf-midatlantic wrote:
I just subscribed to the list last week, still getting a feel for topics and hope this one is of interest. I was recently looking into the RF propagation model by Anita Longley and Phil Rice, still widely used after a half century.
Last I checked, Maxwell's equations haven't changed. ;)
Going from one old report to another, I found the original 1968 CDC-3600 Fortran IV source code as an appendix in a report. After correcting the many OCR errors with O/D/0/Q, I/l/1 and similar, I posted about it to the PiDP11 mailing list. Several folks joined in and the code now runs on several old OSes in addition to F77 if you want to run it on linux. The output is, well, admittedly not as fun as a game, but if you want some contemporary code for your retro computing or happen to also be an EE working in RF, it is at
Oooh! Very nice work. We'll get that running on real iron at LSSM. Screw games...life's too short, and the real world is much more interesting. Excellent work. -Dave -- Dave McGuire, AK4HZ New Kensington, PA
On 12/26/22 3:35 PM, Dave McGuire via vcf-midatlantic wrote:
On 12/25/22 09:25, Mike Markowski via vcf-midatlantic wrote:
...RF propagation model by Anita Longley and Phil Rice,... https://udel.edu/~mm/itm/ Oooh! Very nice work. We'll get that running on real iron at LSSM. Screw games...life's too short, and the real world is much more interesting. :-) Excellent work.
-Dave
Thanks, Dave and also Martin, I'm very glad the topic is of interest! 73, Mike ab3ap
On 12/25/2022 9:25 AM, Mike Markowski via vcf-midatlantic wrote:
I just subscribed to the list last week, still getting a feel for topics and hope this one is of interest. I was recently looking into the RF propagation model by Anita Longley and Phil Rice, still widely used after a half century. Going from one old report to another, I found the original 1968 CDC-3600 Fortran IV source code as an appendix in a report. After correcting the many OCR errors with O/D/0/Q, I/l/1 and similar, I posted about it to the PiDP11 mailing list. Several folks joined in and the code now runs on several old OSes in addition to F77 if you want to run it on linux. The output is, well, admittedly not as fun as a game, but if you want some contemporary code for your retro computing or happen to also be an EE working in RF, it is at
Mike, A Christmas present indeed. Thank you! VY 73 Martin Flynn W2RWJ
participants (3)
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Dave McGuire -
Martin Flynn -
Mike Markowski