LAN-IQ SDR Features

Stand Alone Software Defined Radio

● 30 kHz to 1700.00MHz continuous frequency range

● Direct sampling

● DDC – Digital Down-Conversion

● 12- bit 76.8 MSPS A/D conversion

● Stand Alone mode (AM, CW, SSB, NFM, WFM stereo, BPSK, QPSK demodulators)

● Up to 2.2MHz recording and processing bandwidth

● Waterfall display functions, when used with appropriate software

● Recording and playback, when used with appropriate software

● Sensitivity – MDS -136 dBm at 500Hz bandwidth (0.03MHz-35MHz)

● Sensitivity – MDS -143.5 dBm at 500Hz bandwidth (50MHz-435Mhz)

· USB 2.0 (Full Speed) interface

● LAN interface for remote access

● Compatible with: Linrad, Winrad, HDSDR, Studio1, SDR Console

(SDR-radio), CuteSDR, SdrDX, Quisk, PowerSDR_mrx

● Powered from USB or external power supply 7-10VDC

● Dimensions 120mm deep x 78mm wide x 27mm high

● Unit cost – $339

Main Menu

LAN-IQ SDR (Stand-alone SDR)
AFEDRI SDR-Net description
AFEDRi SDR-Net (russian) – описание на русском
AFE822x SDR-Net (Dual Channel)
AFE822x SDR-VHFx2 (Dual Channel)
New! AFEDRI SDR-USB-HS (VHF/SHF) Description
AFEDRI / AFE822x SDR Group
Ordering information
Как сделать заказ
Using AFEDRI SDR and MAP65-IQ
4Z5LV – Home page
Downloads
Recorded I/Q (wave) files
WEB links

New! LAN-IQ SDR (Stand-alone SDR)

LAN-IQ SDR Features

Stand Alone Software Defined Radio

30 kHz to 1700.00MHz continuous frequency range
Direct sampling
DDC – Digital Down-Conversion
12- bit 76.8 MSPS A/D conversion
Stand Alone mode (AM, CW, SSB, NFM, WFM stereo, BPSK, QPSK demodulators)
Up to 2.2MHz recording and processing bandwidth
Waterfall display functions, when used with appropriate software
Recording and playback, when used with appropriate software
Sensitivity -MDS -136 dBm at 500Hz bandwidth (0.03MHz-35MHz)
Sensitivity -MDS -143.5 dBm at 500Hz bandwidth (50MHz-435Mhz)
USB 2.0 (Full Speed) interface
LAN interface for remote access
Compatible with: Linrad, Winrad, HDSDR, Studio1,SDR Console

(SDR-radio), CuteSDR, SdrDX, Quisk, PowerSDR_mrx

Powered from USB or external power supply 7-10VDC
Dimensions 120mm deep x 78mm wide x 27mm high
Unit cost – $339

LAN-IQ SDR rev1.0

There is some video related to LAN-IQ SDR:

–

LAN-IQ SDR is stand-alone, direct sampling Software Defined Receiver (see picture above) it has ability to send it’s received I/Q stream in three different modes:

– Stand-Alone (Digital processing, filtering , decoding is implemented inside SDR)

– Network (LAN)

– USB

LAN-IQ SDR has the following specification:

Frequency Coverage:

0.03MHz-35MHz & 35MHz-1700MHz

Noise Figure: ~11dB (for 1MHz-35Mhz range and maximum RF gain 35dB)*

*input VGA (Variable Gain Amplifier) has variable Gain from -10dB up to +35dB

Noise Figure: ~3.5dB (for 50MHz-435Mhz range and maximum LNA/MIX gain )

MDS: -136 dBm at 500Hz bandwidth (0.03MHz-35MHz)

MDS: -143.5 dBm at 500Hz bandwidth (50MHz-435Mhz)

Output data format: two 16-bit I/Q channels (audio stereo stream emulation)

Maximum Receiving Bandwidth:

BW = up to 2200kHz (for 2400kHz sample rate) – using Network connection

BW = up to 706kHz (for 768kHz sample rate) – in stand-alone mode

BW = up to 230kHz (for 250k samples/s sample rate) – using USB connection

RF ADC sampling rate: 76.800MHz

Power Supply Voltage Requirements:

5V (supplied from the PC’s USB bus or from external) or from external power supply able to provide 5VDC +/-0.2V).

7.0-10V DC to the DC power connector.

Power Supply Current Requirements:

– up to 850mA (max. LCD brightness, network cable connected, VHF/SHF band)

The LAN-IQ SDR is designed to be used in stand-alone mode , i.e. without need to use any additional computer and software.

In same time the SDR can be connected and used with Personal Computer (PC) by two interfaces:

Ethernet Network connection.

This can now provide up to 2400kHz sample rate

Full Speed USB

From PC point of view, the SDR-Net can be used alternatively as:

Network device using two IP protocols: TCP and UDP.

– TCP protocol is used to control the SDR parameters.

– UDP protocol is used to send received I/Q stream from SDR to PC

Or exactly like the AFEDRI SDR-Net -USB Composite Device, that contains two USB functions:

GenericUSB Audio device – to transfer baseband I/Q signal, as an audio stereo stream
USB HID device – used to control AFEDRI SDR-Net

All the USB functionality of the LAN-IQ SDR is identical to the earlierAFEDRI SDR-Net,

For more information about USB functionality of the device please readAFEDRI SDR description.

Listed below are the new feature that have been added with network interface.

When the LAN-IQ SDR is connected to a PC using network interface, it is compatible with the following PC SDR software: Linrad,Winrad,HDSDR,Studio1,SDR Console v.3.0 (SDR Radio),CuteSDR, SdrDX, Quisk,ghpsdr3/QtRadio,PowerSDR_mrx

In addition, there is software plugin -SDR Network Control Box plugin , that can be used withWinrad,HDSDR, SDRUno (ex. Studio1), this allows control of the LAN-IQ SDR parameters (frequency, RF gain/attenuation etc…) and reception of the UDP I/Q data stream.

The SDR Network Control Box software can be used as stand alone application and/or as plug-in forWinrad/HDSDR software (under Windows). This enables the SDR’s frequency to be displayed and changed directly fromWinrad GUI (please checkmy Download page).

LAN-IQ SDR is based on sameAFEDRI8201 integrated circuit, like AFEDRI SDR-Net , so you can get more information fromAFEDRI SDR-Net description page:

There is short block diagram description:

LPF – Low Pass Filter, in default configuration is using as anti-aliasing filter for from DC to ~35MHz (or any frequency located below Nyquist limit).

VGA – Variable Gain Amplifier, it is built usingAD8369 IC from Analog Devices, and adjusted in in this design to give amplification/attenuation of input signal from -10dB up to 35dB.

RF Switch – is used in VHF/SHF SDR versions to switch analog signal path between HF VGA and VHF Front End.

VHF/SHF Front End – Analog Font End chip for VHF/SHF band, based on R820T2 chip

HPF – High Pass filter for VHF/SHF bands R820T2 front End chip

TCXO – Thermal Compensated Crystal +/- 0.5ppm Oscillator, used as reference oscillator for R820T2 Front End chip

VHF/SHF Power Switch – used to switch on or off 3.3V voltage for R820T2 Front End (when VHF/SHF band is enabled)

DDC Front End – i.e Analog Front End is built onAFEDRI8201PBF integrated circuit. More information about you can find indatasheet.

FPGA – main function of this device to convertAFEDRI8201 base-band (output data) serial protocol to Serial or Parallel data transfer protocol, that can be received by used in design CPU.

CPU – it ARM Cortex-M7 architecture microprocessor –STM32H743VI , fromST Microelectronics.

Ethernet (RMII PHY) – Ethernet physical layer transceiver, working as interface between LAN (network) and CPU

Power Supply – Whole receiver is supplied from 5V voltage of USB line, and there is three voltages +1.8V -digital, 3.3- digital and 3.3V analog, that generated from single supply voltage.

External Power Supply – Is used as alternative power supply from external DC source, like battery or transceiver power supply, it is linear power supply, can work from external sources that gives DC voltage in range 7.5VDC-10VDC

Power Switch – automatically switches between USB or external voltage source.

LCD – provides support of Graphic user interface, spectrum imaging, signal measurements etc.

CODEC – used to listen decoded audio on headphones.

The mechanical size of the LAN-IQ SDR is same like for AFEDRI SDR-Net: 120x73mm. It was designed for installing in one two of aluminum boxes manufactured byHammond the manufacturer part number of boxes is:

● 1455J1201

There is lot of files on my download page, software sources and firmware for your attention.

You can visit alsoYahoo AFEDRI SDR user group

Any question? Please ask me by email. alex(*)4z5lv.net

– to really send me email – please replace (*) by @ 🙂 , and please put in email subject

Please check it periodically for latest version.

Further information will be later.

Written by 4Z5LV