DirectionFinding
From APRSWiki
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| − | From: Robert Bruninga <bruninga@usna.edu> | + | From: Robert Bruninga <bruninga@usna.edu> |
| − | To: w0ep@frii.com | + | To: w0ep@frii.com |
| − | Cc: aprssig@lists.tapr.org | + | Cc: aprssig@lists.tapr.org |
| − | Subject: Re: [aprssig] Omni DFing... | + | Subject: Re: [aprssig] Omni DFing... |
| − | Date: Fri, 12 May 2006 10:50:18 -0400 | + | Date: Fri, 12 May 2006 10:50:18 -0400 |
| − | (edited) | + | (edited) |
| − | ... it is so very hard to get the average ham | + | ... it is so very hard to get the average ham |
| − | to respond with signal reports when there is jammer | + | to respond with signal reports when there is jammer |
| − | or stray signal on the air. The usual responses are: | + | or stray signal on the air. The usual responses are: |
| − | 1) Im mobile, | + | 1) Im mobile, |
| − | 2) I dont have any DF equipment. | + | 2) I dont have any DF equipment. |
| − | 3) I dont have a beam. | + | 3) I dont have a beam. |
| − | 4) I cant easily listen on the input | + | 4) I cant easily listen on the input |
| − | 5) I cant remember how to do REV on this rig | + | 5) I cant remember how to do REV on this rig |
| − | 6) Maybe tonight I can do something | + | 6) Maybe tonight I can do something |
| − | 7) I only have an omni antenna... | + | 7) I only have an omni antenna... |
| − | 8) I'd have to change radios | + | 8) I'd have to change radios |
| − | 8) Get someone with some DF equipment to help | + | 8) Get someone with some DF equipment to help |
| − | 10) I cant hear anything | + | 10) I cant hear anything |
| − | *** ATTENTION *** None of those excuses in any | + | *** ATTENTION *** None of those excuses in any |
| − | way prevent that station from giving good valuable | + | way prevent that station from giving good valuable |
| − | data to help locate the signal. All we need are: | + | data to help locate the signal. All we need are: |
| − | a) His location | + | a) His location |
| − | b) His Antenna height, gain, directivity | + | b) His Antenna height, gain, directivity |
| − | c) A signal report including the very valuable 0. | + | c) A signal report including the very valuable 0. |
| − | d) A map to plot all this data on... | + | d) A map to plot all this data on... |
| − | Now, APRS already is transmitting (a) and (b), and | + | Now, APRS already is transmitting (a) and (b), and |
| − | has (d), so all it needs is a single digit -c- from several | + | has (d), so all it needs is a single digit -c- from several |
| − | stations to localize the signal. | + | stations to localize the signal. |
| − | ... | + | ... |
Latest revision as of 16:05, 13 August 2007
From: Robert Bruninga <bruninga@usna.edu> To: w0ep@frii.com Cc: aprssig@lists.tapr.org Subject: Re: [aprssig] Omni DFing... Date: Fri, 12 May 2006 10:50:18 -0400
(edited)
... it is so very hard to get the average ham to respond with signal reports when there is jammer or stray signal on the air. The usual responses are:
1) Im mobile, 2) I dont have any DF equipment. 3) I dont have a beam. 4) I cant easily listen on the input 5) I cant remember how to do REV on this rig 6) Maybe tonight I can do something 7) I only have an omni antenna... 8) I'd have to change radios 8) Get someone with some DF equipment to help 10) I cant hear anything
*** ATTENTION *** None of those excuses in any way prevent that station from giving good valuable data to help locate the signal. All we need are:
a) His location b) His Antenna height, gain, directivity c) A signal report including the very valuable 0. d) A map to plot all this data on...
Now, APRS already is transmitting (a) and (b), and has (d), so all it needs is a single digit -c- from several stations to localize the signal. ...
