树莓派+RTL

树莓派+RTL"/>

树莓派+RTL

最近买了个FT-5DR，准备玩APRS，但是长沙的iGATE少的可怜，为了让自己的呼号显示到APRS.TV，只能自己折腾一个iGATE了。
淘宝上有现成的产品，不过要花几百块钱，有点划不来，本着业余无线电不怕折腾的精神，只能自己搭建了。
记得大概5年前，用树莓派+RTL电视棒搭建APRS iGATE，搭建成功后没几天就拆了，现在完全想不起来怎么弄了，还好搜到大神写的《Updated guide to setting up an APRS RX only iGate using a Raspberry Pi, RTL-SDR dongle and a pre-built image》， 下面把步骤记录一下：
1.下载已经安装好Dire Wolf的树莓派镜像，如果用WINRAR解压报错（我就遇到了，以为是下载问题，又给迅雷充值了15块大洋，哎），换成7-ZIP就可以正常解压
2.把镜像写到TF卡，插到树莓派，并插上RTL-SDR，启动
3.树莓派连接WI-FI
4.树莓派最好连接显示器，如果没有接显示器，也可以SSH远程登录
5. 树莓派用户名pi，密码raspberry
6. 运行sudo raspi-config，更改配置：
（1）7 Advanced Options—>A1 Expand Filesystem
（2）4 Localisation Options 更改时区
TAB键选FINISH退出
7.打开sdr.conf，设置呼号、验证码、服务器、经纬度信息

#
# Sample configuration for SDR read-only IGate.
## We might not have an audio output device so set to null.
# We will override the input half on the command line.
ADEVICE null null
CHANNEL 10
MYCALL BG7GF# First you need to specify the name of a Tier 2 server.  
# The current preferred way is to use one of these regional rotate addresses:#	noam.aprs2 		- for North America
#	soam.aprs2		- for South America
#	euro.aprs2		- for Europe and Africa
#	asia.aprs2 		- for Asia
#	aunz.aprs2		- for Oceania IGSERVER aprs.tv# You also need to specify your login name and passcode. 
# Contact the author if you can't figure out how to generate the passcode.IGLOGIN BG7GF-10 16610# That's all you need for a receive only IGate which relays
# messages from the local radio channel to the global servers.PBEACON sendto=IG delay=2:00 every=15:00 symbol="igate" overlay=R lat=28.XXXXXX long=112.XXXXXX COMMENT="BG7GF-10 iGate | DireWolf 1.4 on RPi+RTL-SDR using QSO365 image"

8.最后运行如下：

rtl_fm -f 146.40M - | direwolf -c sdr.conf -r 24000 -D 1 -

用对讲机发射APRS，不出意外的话，呼号就可以出现在APRS.TV上了