Table of Contents

YSF Protocol for MMDVM-HOTSPOTS

YCS Listener-UDP-Port: 42000

LOGIN YSFP (Poll)

Name Length Values Comment
Signature 4 Byte YSFP
RPTR-Callsign 10 Byte OE1KBC ASCII filled up with blank 0x20
total 14 byte
Name Length Values Comment
Signature 4 Byte YSFU In ASCII
RPTR-Callsign 10 Byte OE1KBC ASCII filled up with blank 0x20
total 14 byte

OPTIONS YSFO (DG-ID-List to Reflector)

Name Length Values Comment
Signature 4 Byte YSFO ASCII
RPTR-Callsign 10 Byte OE1KBC ASCII filled up with blank 0x20
OPTIONS 36 Byte 10;20;77;80; ASCII filled up with blank 0x20
DG-ID separated by ; semicolon
total 50 byte

INFO YSFI (Info to Reflector)

Name Length Values Comment
Signature 4 Byte YSFI ASCII
RPTR-Callsign 10 Byte OE1KBC ASCII filled up with blank 0x20
RX-Frequency 9 Byte 430600000 ASCII 999999999
TX-Frequency 9 Byte 438200000 ASCII 999999999
Locator 6 Byte JN88EG ASCII
Name/Town 20 Byte Vienna ASCII filled up with blank 0x20
HOTSPOT-Type 12 Byte MMDVM ASCII filled up with blank 0x20
OPENSPOT3 ASCII filled up with blank 0x20
DV4mini ASCII filled up with blank 0x20
PiStar ASCII filled up with blank 0x20
YSFGateway-ID 7 Byte 0232155 ASCII 9999999
Filler 3 Byte ASCII filled up with blank 0x20
total 80 byte

PAYLOAD YSFD (Data)

Name Length Values Comment
Signature 4 Byte YSFD ASCII
RPTR-Callsign 10 Byte OE1KBC ASCII filled up with blank 0x20
USER-Callsign 10 Byte OE8KBC ASCII filled up with blank 0x20
DEST-Callsign 10 Byte ALL__ ASCII filled up with blank 0x20
STATUS 1 Byte (0x00 / 0x01) + 0xFE Status 0,1 + (Count « 1)
FS+FICH 30 Byte see table
PAYLOAD 1 CHECK 5 Byte ??
PAYLAOD 1 AMBE 13 Byte AMBE+
PAYLOAD 2 CHECK 5 Byte ??
PAYLAOD 2 AMBE 13 Byte AMBE+
PAYLOAD 3 CHECK 5 Byte ??
PAYLAOD 3 AMBE 13 Byte AMBE+
PAYLOAD 4 CHECK 5 Byte ??
PAYLAOD 4 AMBE 13 Byte AMBE+
PAYLOAD 5 CHECK 5 Byte ??
PAYLAOD 5 AMBE 13 Byte AMBE+
total 155 byte

Server reply messages

YSFP ONLINE

Name Length Values Comment
Signature 4 Byte YSFP ASCII
RPTR-Callsign 10 Byte ONLINE ASCII filled up with 0x00
total 10/14 byte

Server messages to YSFRegistry

YSFS PING V1

Name Length Values Comment
Signature 4 Byte YSFS ASCII
Software ID 5 Byte 99999 ASCII 00001 - 99999
YSF Server-Name 30 Byte DISPLAY NAME FOR Registry-Dashboard ASCII filled up with 0x20
Connection-Count 3 Byte 999 ASCII 000-999
total 42 byte

YSFR PING V2 (not yet implemented)

Name Length Values Comment
Signature 4 Byte YSFS ASCII
Software ID 5 Byte 99999 ASCII 00001 - 99999
YSF Server-Name 30 Byte DISPLAY NAME FOR Registry-Dashboard ASCII filled up with 0x20
Connection-Count 3 Byte 999 ASCII 000-999
DNS-Name 63 Byte e.g. srv08.oevsv.at ASCII filled up with 0x20
Server Version 25 Byte e.g. YCS Version B.05.31 ASCII filled up with 0x20
total 130 byte