RadioBerry HF SDR Transceiver Raspberry Pi Hat
Raspberry SDR Radioberry
The radioberry is actual a radio card (raspberry pi hat), which can be plugged into a raspberry pi, forming a Software Defined Radio (SDR).
The radio card uses an Analog Devices AD9866 which is a 12-bit broadband modem mixed signal front end that has been repurposed as a direct down conversion (DDC) and direct up conversion (DUC) SDR transceiver covering 0-30 MHz
The radio card uses an Intell Cyclone 10LP FPGA, supporting the 10CL16 and 10CL25.
The firmware will be loaded via the raspberry pi.
Power supply for the radio card is provided by the raspberry pi.
The radio is fully built by using open source software and open hardware.
Hereby an overview of links for more information:
I am providing all the detailed information for builders. Iam not selling the radioberry iam only sharing information and willing to help builders to make their own SDR radio.
Have fun, 73 Johan PA3GSB
Radioberry TX amplifiers
From Deepu, VU3TLD i received a bare PCB board, he designed a PCB based on the developement done by G6ALU.
It took some time to collect all the required components. I had a great time building this amplifier.
Winding the toroids and assembling the 1206 SMD components, these 1206 SMD are large…when you are used to 0603 sizes.
Also doing some mechanical work like tapping the holes for mounting the HF devices.
A big advantage of these devices used here are in a TO220 package which differ, from switching devices,
in that the tab is connected to the source electrode, so in this design are grounded by the PCB and heat sink.
No insulating washers are used when bolting the devicesdown to the heat sink and PCB.
After assembly i attached a 50 ohm resistor at the amp in connecor; setting the bias was going smooth.
But when removing the 50 ohm resistor the amplifier started to oscillate… but looking back in some direct mails
from Deepu i could have found the warning; i had to ground the HF-in and HF-out connector.
Detailed information can be found at:
5W Radioberry preamp board.
The preamp board can be clicked on top of the radioberry.
This results in a nice setup with a long time ago built 100W amplifier
I am using this setup with a amplifier i built some years ago, the amplifier does contain the LPF filters.