4814A proposal - WSPR common phrase index
- May 31, 2008I'm excited to see the potential of WSPR as a QRP,
weak-signal mode. Of course, fitting a QSO into 50
bits is a challenge beyond the basics. However, I was
figured a simple common phrase substitution might
work. Here's my proposal:
Built into the WSPR program is a database of thousands
(tens of thousands?) of common phrases, each with
their own index code. The index codes could be
anything, but for this example lets just use 0-9,a-z.
So, the first phrase would be indexed 0, the next
would be 1 and so forth with the 36th in the list
being z. The next one would be 00, after that would be
01, and so on till the end. A long example might be
This would provide a very large index with a number of
characters representing it. For only 5 characters
you'd get 60 million possible phrases.
This works well for specific things like radio
manufacturer, country of origin, etc. A sample string
"Rig: Yaesu FT-857 Country: Zimbabwe Tower: Rohn 25G
Antenna: Mosely TA-33 Jr"
Yaesu FT-857 - index "g5"
Zimbabwe - index "02"
Rohn 25 - index "6h"
Mosely TA-33 Jr - index "y7"
You could use phonetics to shorten the string without
indexing. However for semi-common strings like "my
truck broke down", you could index that if you had an
index ranging in the millions/billions of
I welcome any comments. What's the feasibility of
this? Would phonetics be better?
-73 de Anthony, KE7HQy