ColibriDDC

ColibriDDC is a SDR receiver, in small-size box, for the HF frequency band from 10 KHz to 55 MHz working together with a computer or LAN. The circuit configuration is a direct sampling with high-speed ADC, the front-end contain a low pass filter (with disable) but not band pass filters. So, with the help of external filters is possible to receive frequencies up to 800 MHz in under-sampling mode. Local network interface allows to use the ColibriDDC remotely and also allows to connect simultaneously several receivers to one PC for solving various signal receipt tasks. Main features: two independent receiving channels, record and playback of sampled frequencies wide up to 312 kHz, high performance ADC with sampling frequency of 125 MHz for 14 bit resolution, opportunity to receive in Nyquist zones up to UHF with external filters, wide spectrum scope up to 62.5 MHz, 24 bit audio DAC direct output, multi-pin connector for controlling external devices, external reference at 10 MHz standard, ExpertSDR2 software.

Application fields include dual channel HF/VHF receiver, panadapter for transceivers, remote reception point for contests and other applications, RF spectrum analyzer. PC requirements: Intel Core2Duo processor or higher, local network connector 100 Mbps or 1 Gbps, Windows 7~10 32 or 64 / Linux Ubuntu 64. ExpertSDR2 software with adapted interface for the receiving mode is used together with the ColibriDDC receiver. At the present moment software, supported are Windows 8 and Linux Ubuntu, works in the receiving mode and maintains two independent channels with the bands to 312 kHz.

ColibriDDC block diagram :

ColibriDDC block diagram

Blocks: [REF] input connector for external 10 MHz reference, standard CMOS levels with 2kΩ//1pF impendance. [PLL] ADC clock frequency synthesizer. [ATT] RF attenuator. [MCU] microcontroller unit. [Ant] connector for the antenna. [TCXO] built-in temperature compensated crystal oscillator. [ADC] high-speed analog to digital converter. [DAC] audio digital to analog converter, 24 bit with 41 Ksps. [EXT CTRL] connector for controlling the external devices. [LPF] input low-frequency filter with disable. [FPGA] field programmable gate array, for the DDC or Digital Down Conversion. [LAN] local network connector. [PHONES] jack for connecting headphones. [Front] front panel. [Rear] rear panel.

ColibriDDC rear/front panel and connections :

ColibriDDC rear and front panel

ColibriDDC circuit and optional kit :

ColibriDDC circuit is based on 4-layered PCB (Printed Circuit Board). All elements are installed on the the top layer via the SMC assembly. Manufacturing process is fully automatic and is carried out by the high-quality Taiwan quality manufacturers. All functional units of the receiver are placed on the PCB under RF shields.

ColibriDDC circuit

As optional is available the BPF-kit board, that should be installed inside the receiver's case, with octave-band filters for a better IP2 dinamic range on HF from 1.7 to 30 MHz:

ColibriDDC price

We have collected for your convenience the Expert Electronics ColibriDDC sale price (UK Pounds) and its trend over time. Useful to guarantee a cheaper purchase of this radio and to put it for sale in the second-hand market. Of course offers, accessories, warranty terms and conditions can lead to different figures.

Price	Date	Condition
GBP 600.00 (699EUR)	2021-oct	Brand-new
GBP 609.00 (699EUR)	2018-nov	Brand-new