QRP Labs U4B-25

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U3S

Live tracking
Launch photos
Transmitter

This is the 25'th test flight of the new U4B tracker. For details see below.

Callsign is VE3KCL, WSPR transmission on 20m, is minute :08 and telemetry in minute :00 and telemetry call 0x4xxx

Live tracking

Transmitter

This is the 25'th test flight of the new U4B tracker. U4B-25 was assembled by Dave VE3KCL. This YouTube video explains the features of the U4B tracker: https://youtu.be/CqNZeh575xw 

U4B Basic program listing

/
Name           Type   Size  Blocks  Start  Compiled
..
MAIN           TEXT    377       3      4       Yes
GPS            TEXT     65       1      1       Yes
BA             TEXT    176       2      2       Yes

MAIN
 5 LET C = 95
 GPS 2 "$PCAS03,1,0,1,1,1,0,1,0*03"
 6 LET R = 0
 7 LET HP = 0
12 LET FR = 24999988
21 LET R = R + 1
 IF R > 5
 LET HP = 1
22 GOTO 25
23 ENDIF
24 LET HP = 0
25 CW 0 14096930 1 0 "T"
 LET CE = 0
 RUN "GPS"
30 SLEEP 10 6
31 OUT 19 0
 RUN "BA"
 IF HP = 1
 CW 0 14096930 1 0 "T"
 GOTO 44
 ENDIF
 CW 0 14096890 1 0 "T"
44 TELE
46 CW 0 14096900 10 0 " VE3KCL"
47 CW 0 14096900 12 0 " #LT #LN"
 GPS 2 "$PCAS02,1001*2F"
50 GOTO 12

GPS     / changed gps 304 to 290 to avoid late timeout

 GPS 290 "$PCAS04,1*18"
 OUT 19 GL
 LET FR = 24999988

 CW 0 14096930 1 0 "M"


BA
33 CW 0 14096900 5 0 "*0196310000962    36396303  *"
34 CW 0 14096900 5 0 "*01963095058402 555 902906800  964904949042  *"
35 CW 0 14096900 5 0 "*01IFLCNAP8Q7R6R5S0S0S5R6R7Q8PANCLFI*"

TX Photos

Launch Photos