Maybe you can skin this cat a different way.
In the APRS client called APRSIS32, I used this: -b/CW*/DW*. Note the * on the end.
The reason I chose to use “-b” was because there may be a time when the symbol is used incorrectly and I wouldn’t see it. You are looking at a symbol with a specific overlay so it may be very specific.
Fred N7FMH
Did not work. Did you try it and it worked for you? See below as to the right orientation of the /a for a red diamond. Yes I am using SARTRACK but all programs have the filter box and is universal. So should work for all aprs programs. Please send code tested and works for you.
http://aprsisce.wikidot.com/aprs-is-filters
-s//a/DW | Blocks all packets using a red diamond (\a) overlaid with DW |
Since the diamond is red should it use the \a and not /a?
-s/\a/DW
Thank you.
Jerry N7YGE
Nice map, but I don't think that's APRSIS32... If it was, you could test the positive filter with Control-G for a filter test. But here's what I think you need:
-s//a/WD
Yes, there's 2 slashes after the s and one slash after the a. It says to suppress all "a" symbols from the alternate table (the red diamond) with an overlay of W or D.
You can read more about APRS-IS filters at:
http://www.aprs-is.net/javAPRSFilter.aspx
Lynn (D) - KJ4ERJ - Author of APRSISCE for Windows Mobile and Win32
On 3/6/2020 6:14 PM, Jerry N7YGE wrote:
I want all of the red diamond with W and D’s to go away. Picky any of them.
Thank you for the help.

-o is an object filter which is based on the object name.
I suspect you're looking for a -s filter which is a symbol filter.
Please give me a few of the stations you'd like to not see so that I can verify exactly which symbol they're using to build you a suitable -s/ symbol filter.
Lynn (D) - KJ4ERJ - Author of APRSISCE for Windows Mobile and Win32
On 3/6/2020 12:22 PM, Jerry N7YGE wrote:
Can someone please show me how to write the code for a filter to be able to turn off objects like winlink with a red diamond and W? Also black diamond with a D.
I have tried filter –o/a/DW and -0/a\DW
Jerry N7YGE

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