Hi Roger you will find that the late Reg Edwards programs GRNDWAV3 (I think) gives a very good idea of ground wave strengths. I do have an article here (somewhere) from Jack Belrose with I believe so
Thanks Alan. I have downloaded the GRNDWAV3 programme and am playing with it - looks useful. Really looking for some normalised curves so I could do very quick estimates of expected losses versus dis
Roger, it's the CCIR- RECOMMENDATION 368-7 . There are no free sources on the internet for these graphs at least I was not able to find any. Maybe DK8KW can help you, he has a graph for 150kHz on his
Wonder if this would help. It's a free BBC document on the estimation of LF/MF broadcast service areas. There are graphs for the 200 KHz to 1500 KHz region for differing ground conductivities. It's a
Now back to 500kHz WSPRing.... 73s Roger G3XBM 2009/10/31 Alan Melia <[email protected]> Hi Roger you will find that the late Reg Edwards programs GRNDWAV3 (I think) gives a very good idea of
http://downloads.bbc.co.uk/rd/pubs/reports/1975-01.pdf Older editions of the NAB Engineering Handbook at least had graphs for the MW broadcast band if I remember correctly but someone seems to have
