Raspberry Pi 4 B 2GB/4GB WiFi 2.4 / 5.0 GHz BLE Raspberry Pi Raspberry Pi RASPBERRY-PI4-2G-909 View larger

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Raspberry Pi 4 B 2GB/4GB WiFi 2.4 / 5.0 GHz BLE

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The new Raspberry Pi 4 B has a Quad Core 1.5Ghz 64bits processor, 2.4Ghz / 5Ghz WiFi functions, Bluetooth Low Energy (BLE 5.0), 2GB memory or 4GB DDR, dual video display with resolution up to 4K, USB 3.0 port and Gigabit Ethernet port with PoE.

The Raspberry Pi 4 Model B offers performance comparable to an entry-level x86 PC.

Operating systems officially supported to download on Raspberrypi.org: Raspbian, Windows 10 Core IoT, OpenELEC, OSMC, Linux Arch, RISC OS, Pidora.

Comes with: Raspberry Pi 4 Model B (official) with 2GB or 4GB memory to choose from below.

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68,00 € tax incl.

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Raspberry Pi 4 model B specifications

CPU: Broadcom BCM2711, QUAD-CORE Cortex-A72 (ARM v8) 64-bit at 1.5GHz
SDRAM Memory: 2GB or 4GB DDR LPDDR4-2400
Wi-Fi 802.11b / g / n / ac (2.4Ghz and 5Ghz)
Bluetooth Low Energy 5.0
GPIO 40-pin
2 USB 3.0
2 ports USB 2.0 ports
2 micro-HDMI ports with 4K 60Hz H.265 video resolution
1 Power over Ethernet (PoE) compatible Gigabit Ethernet port with PoE expansion card (optional)
1 Camera port, 1 DSI display port to connect a touch screen
Micro SD drive for OS and data (max 64GB)
Power supply : 5.1V, 3A via USB-C or GPIO
Stereo audio output and composite video port
Operating temperature: 0°C to 50°C

How to use a Raspberry PI as a radio transmitter with Rpitx

Using Rpitx software from F5OEO, a raspberry PI can be used to transmit radio signals from 5khz to 500Mhz (AM/FM/SSB/FSQ/SSTV), using the GPIO 18 extension (pin 12) to connect a wire to serve as an antenna. The length of the wire depends on the frequency used to transmit.

Note that the generated signal is not "clean" and generates many harmonics that are harmful if amplified, without filtering.

With the addition of an RTL-SDR USB stick for reception, it's then possible, as an experiment, to create a transceiver with the qtcsdr software from HA7ILM.

As with any radio transmission equipment, the use is subject to the respect by the user of the laws in force in the country of use.

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