In this video, I turn a Soapy Remote SDR (software defined radio) server on a Raspberry Pi 4 with an RTL-SDR Blog V3 USB dongle into a standalone wifi access point so you can access remote SDR without an internet connection.
Raspberry PI Remote SDR Server with Soapy Remote: https://youtu.be/DJnRDu2_amU
CanaKit Raspberry Pi 4 (4GB) Starter Kit (Amazon Affiliate)
US: https://amzn.to/3azJgrW
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ES: https://amzn.to/2T06LnM (similar)
FR: https://amzn.to/3cvIZrs (similaire)
IT: https://amzn.to/2Ar74Sj (simile)
DE: https://amzn.to/2AqfWHQ (ähnlich)
IN: https://amzn.to/3ey6fWj
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NL: https://amzn.to/3f5NdsD (vergelijkbaar)
RTL-SDR Blog V3 R820T2 (Amazon Affiliate)
US: https://amzn.to/2z4hpDu
CA: https://amzn.to/3e3Ln8K (dongle only)
UK: https://amzn.to/2AuUdin
IN: https://amzn.to/2ZNJHez
AU: https://amzn.to/3iDbW8l
Software Defined Radio Playlist: https://www.youtube.com/playlist?list=PLErU2HjQZ_ZPHRD_m-N5pzrPPdkXa8Fsf
Assign Static IP to wlan0
sudo nano /etc/dhcpcd.conf
interface wlan0
static ip_address=192.168.1.1/24
nohook wpa_supplicant
Commit Changes to dhcpcd
sudo systemctl daemon-reload sudo systemctl restart dhcpcd
Install dnsmasq (DNS and DHCP Server)
sudo apt install dnsmasq
Make Backup of dnsmasq.conf
sudo mv /etc/dnsmasq.conf /etc/dnsmasq.conf.orig
Edit dnsmasq.conf
sudo nano /etc/dnsmasq.conf
interface=wlan0 dhcp-range=192.168.1.2,192.168.1.254,255.255.255.0,24h address=/#/192.168.1.1
Install hostapd (WiFi Access Point Software)
sudo apt install hostapd
Edit hostapd.conf
sudo nano /etc/hostapd/hostapd.conf
Config for Password Protected WiFi Access Point
interface=wlan0 driver=nl80211 ssid=sdr hw_mode=g channel=6 wmm_enabled=0 macaddr_acl=0 auth_algs=1 wpa=2 wpa_key_mgmt=WPA-PSK rsn_pairwise=CCMP wpa_passphrase=password
Config for Open WiFi Access Point
interface=wlan0 driver=nl80211 ssid=sdr hw_mode=g channel=6
Additional Online Resources for WiFi Setup
https://www.raspberrypi.org/documentation/configuration/wireless/access-point-routed.md
https://w1.fi/cgit/hostap/plain/hostapd/hostapd.conf
Enable WiFi Setup
sudo nano /etc/default/hostapd
DAEMON_CONF="/etc/hostapd/hostapd.conf"
Commit Changes to hostapd and dnsmasq
sudo systemctl daemon-reload sudo systemctl unmask hostapd sudo systemctl enable hostapd dnsmasq sudo systemctl start hostapd dnsmasq
Enable Read Only System (Optional)
sudo raspi-config
Advanced Options > Overlay FS
Choose “Yes” to enable overlay file system and/or “Yes” to write protect boot partition.