++++++++++++++++ Date: Thu, 27 Jun 2002 03:11:49 -0500 From: "Brice D. Hornback" To: radioham at gmx.co.uk, Low Power Amateur Radio Discussion Subject: [128616] Re: [Somewnat OT]Calculating a Beam Heading.. Try this: http://www.indo.com/distance/ It doesn't use Long and Lat... but it sure works great! 73/72/71! de Brice KA8MAV ----- Original Message ----- From: "Ray Goff" To: "Low Power Amateur Radio Discussion" Sent: Thursday, June 27, 2002 2:27 AM Subject: [Somewnat OT]Calculating a Beam Heading.. > Hi, > > Being somewhat mathematically challenged, I wondered anybody had a simple > formula for calculating the Beam Heading for a station based on its Long and > Lat and my Long and Lat? > > Thanks in advance. > > 72 > > Ray, g4fon +++++++++++++++++ Date: Thu, 27 Jun 2002 02:34:10 -0700 From: Conrad Weiss To: Low Power Amateur Radio Discussion , "'Ray Goff'" Subject: [128619] RE: [Somewnat OT]Calculating a Beam Heading.. Ray, There's a number of friendly beam heading calculators on the web. Try The FOGGY MOUNTAIN ARC Beam Antenna Heading Calculator at URL: http://palosverdes.com/fmarc/Beamtop.htm All you need is your own Lat/Long and my Lat/Long. Those you can get off Buckmaster at URL: http://www.buck.com/cgi-bin/do_hamcall You're at: Latitude: 51.5, Longitude: 1.15 I'm at: DX Latitude: 37.5, Longitude: 122.26 Just enter your Lat/Long into the Foggy Mtn Beam Calculator. Then enter my Lat/Long... Beaming from the UK to my US QTH: Your QTH Latitude: 51.5, Longitude: 1.15 My (DX) Latitude: 37.5, Longitude: 122.26 Distance to DX = 5334 mi Bearing DX = 316 deg. OR, from my US QTH to your UK QTH: My QTH Latitude: 37.50, Longitude: 122.26 Your (DX) Latitude: 51.5, Longitude: 1.15 Distance to DX = 5334 mi Bearing of DX = 33 deg. OR, once the thrill of all this is gone, it's faster to just use "cheat sheets" for the top 100 QTHs ;) Your in the UK, I'm in SF Bay USA.... Make a chart/table. Look it up: ~ 314 deg. Done! No computers, no CDs, no calculators... it's fast! It's free :) ! Have fun w/ it es 73, Conrad NN6CW +++++++++++++++++ Date: Thu, 27 Jun 2002 11:15:52 +0000 From: "Leon Heller" To: radioham at gmx.co.uk, qrp-l at lehigh.edu Subject: [128621] Re: [Somewnat OT]Calculating a Beam Heading.. It's a standard navigation calculation, used by sailors, before they had luxuries like GPS. I don't know much about it apart from the fact that it involves great circles and spherical trigonometry, and midshipmen on British warships (the wind-powered wooden ones) used to get beaten for getting it wrong. How about a globe and a piece of string to find your great circle? 8-) Joking apart, it would probably be good enough for radio. Or one of those maps with a peculiar projection that looks like a globe cut up and laid out flat. Just out of curiosity, I tried a web search (navigation bearing longitude) and found lots of stuff including this: http://williams.best.vwh.net/avform.htm He gives the formulae, which you could put into a spreadsheet. 73, Leon -- Leon Heller, G1HSM Tel: +44 1327 359058 Email:leon_heller at hotmail.com My web page: http://www.geocities.com/leon_heller My low-cost Altera Flex design kit: http://www.leonheller.com +++++++++++++++++ Date: Thu, 27 Jun 2002 06:54:09 -0500 From: Chuck Carpenter To: radioham at gmx.co.uk, "Low Power Amateur Radio Discussion" Subject: [128622] Calculating a Beam Heading..[BASIC pgm] Ray, Along with all those neat web programs, I have a BASIC program that will do that. It was originally written by W3IWI in 1984 and was the way some did it BI. I just checked it and with a couple of updates, it seems to run OK with GWBASIC. If you'd like, I can send the file to you as an attachment. (Anyone else too.) I ran it with 0 long and 55 N lat and it came up with about 38 degrees and 4600 miles (rounded by me). This from my old QTH near Dallas. The .BAS file also includes a version of MINIMUF. There are some PEEK functions in the program to read the system clock. These may need to be modified. The last time I ran this was in 1989... [g] I had modified the program with my home lat/long and grid so the would need to be edited. Word Pad or Note Pad work fine as editors. Email Alt: w5usj at arrl.net, w5usj at go.com Chuck Carpenter, W5USJ, Point, Rains Co., TX - EM22cv, NETXQRP #1 QRP-ARCI #5422, QRP-L #1306, QRPp-I #115, ARS #1280, SOC #57 Zombie #759, COG #11, 6 Club #201, NETXQRP http://www.netxqrp.org ++++++++++++++++++ Date: Thu, 27 Jun 2002 08:15:13 -0700 From: "Alan Kaul" To: "Low Power Amateur Radio Discussion" Subject: [128631] Calculating a Beam Heading.. Try the website: http://www.dxzone.com/catalog/Software/Grid_Bearing_and_Maps/ It has a number of programs which will enable you not only to calculate beam headings and distance---but also to make a map, based on your QTH as centerpoint. If you print it, and hang it on your wall -- you can easily "eyeball" the approx beam heading to anyplace else in the world. Alan Kaul, W6RCL, LaCanada, CA w6rcl at amsat.org http://home.att.net/~alan.kaul/index.html ++++++++++++++++++++ Date: Fri, 28 Jun 2002 10:31:40 -0400 From: "Ron McConnell" To: "QRP-L" Cc: "W2IOL" , Subject: [128710] RE: [Somewnat OT] Calculating a Beam Heading... Ray, Here's one more response to your question in addition to the several good responses that you have already received. You may want to try my freeware, lat/long/grid, great circle (ellipsoid), bearings (true & magnetic), distance, BBC MaxiMUF, DX database, DOS command line program GCGC at http://home.adelphia.net/~nj2dx/hoarc/gcgc9900.zip The general DOS command line format is g [home qth] [dx qth] With your lat/long (and map) for 27 Harley Road from http://www.maporama.com/share/ Then for you and me g 52 45 3 n 1 16 46 w fn20ps to yield: 287 deg true, 291 deg magnetic, 5510 km or from my end 50 deg true, 63 deg magnetic, 3424 mi If you insert your home lat/long (above) or grid IO92is (less precise, but good enough) as the default home qth as the first line of ASCII text file home.dat, the command format is just g [dx qth] or g fn20ps is the same as above. g fn20ps f 150 will also do a MUF run for solar flux = 150 "[Somewhat OT]" Not really. :) I have good intentions of working with your Koch Method CW Trainer. Thanks for that. Maybe GCGC can be a small payment. :) Cheers, 73, Ron McConnell w2iol +++++++++++++++++