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Leo Bodnar LBE-1421 2-Port GPSDO Locked Clock Source
SKU Part Number: LEO-LBE-1421
The Leo Bodnar LBE-1421 is a compact GPSDO-locked frequency source with two low-jitter outputs and a switchable 1PPS function on output 1. Designed...
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The Leo Bodnar LBE-1421 is a compact GPSDO-locked frequency source with two low-jitter outputs and a switchable 1PPS function on output 1. Designed for accurate frequency calibration, RF reference use and precision clock applications, it provides a high purity output signal locked to GPS.

Output 1 can be programmed from 1Hz to 800MHz, or used as a 1PPS output, while output 2 can be programmed from 1Hz to 1.4GHz. The output frequency can be set with extremely fine resolution, making the LBE-1421 suitable for demanding reference applications across radio, test equipment, instrumentation and SDR systems.

The frequency stability is derived from GPS satellite Caesium references, with stability approaching 1x10-12, or 0.000001ppm. Output phase noise is shaped by a high quality internal TCXO, providing a clean clock signal with sub-picosecond RMS jitter. A multi-loop digital-analogue PLL allows the output frequency to be set to any value within range, including precise non-integer values such as 144800000.025Hz.

The LBE-1421 is supplied ready to use and configured for 10MHz output. A USB connection to a computer is only required when changing configuration settings, and all settings are stored internally when the device is powered off. The unit is powered via USB-C and is supplied with a magnetic base active GPS antenna.

Software and Downloads

Please use the links below for configuration software and Linux control resources:

Key Features

  • GPSDO-locked frequency source
  • Two low-jitter programmable outputs
  • Output 1 programmable from 1Hz to 800MHz
  • Output 1 can also provide switchable 1PPS
  • Output 2 programmable from 1Hz to 1.4GHz
  • High purity GPS-locked output signal
  • Frequency stability approaching 1x10-12, or 0.000001ppm
  • Sub-picosecond RMS jitter
  • Multi-loop digital-analogue PLL
  • Programmable to very precise frequency values
  • Supplied configured for 10MHz output
  • USB-C powered
  • Configuration via USB
  • Settings stored internally when powered off
  • Magnetic base active GPS antenna included
  • NMEA telemetry available via virtual serial port over USB
  • 1PPS also available on the DCD signal of the virtual serial port
  • CE, FCC and UKCA certified

Output Details

Output Connector Frequency Range Signal Type
Output 1 SMA 1Hz to 800MHz, or 1PPS 3.3V CMOS square wave, 50 ohms
Output 2 SMA 1Hz to 1.4GHz 3.3V CMOS square wave, 50 ohms

Typical Applications

  • 10MHz, 1MHz or other frequency reference for lab equipment
  • Instrumentation reference source
  • RF reference for mixers and multipliers
  • Reference for transmitter equipment
  • Amateur radio equipment reference
  • Propagation beacons and frequency markers
  • VHF, UHF and microwave converter reference
  • RTL-SDR reference, including 28.8MHz
  • Band scanner reference
  • Calibration source for radio receivers
  • Master clock for audio and video equipment
  • DAC and studio recording clock source

Phase Noise at 10MHz

Offset Typical Phase Noise
1Hz -72dBc/Hz
10Hz -101dBc/Hz
100Hz -128dBc/Hz
1kHz -147dBc/Hz
10kHz -156dBc/Hz
100kHz -159dBc/Hz
1MHz -164dBc/Hz

Specifications

Specification Details
Model Leo Bodnar LBE-1421
Product type GPSDO locked clock source
Outputs 2
Output 1 1Hz to 800MHz, 3.3V 50 ohms, or 1PPS
Output 2 1Hz to 1.4GHz, 3.3V 50 ohms
Output connector type SMA
Output signal 3.3V CMOS square wave
Output source impedance 50 ohms
Output power at 10MHz +11dBm, fundamental power channel
Frequency stability Approaches 1x10-12, or 0.000001ppm
Jitter Sub-picosecond RMS
Rise/fall time at 10MHz 300ps / 260ps, measured between 10 percent and 90 percent levels
Power connection USB-C
Power requirement 5V USB, 250mA maximum
GPS antenna connection SMA
Antenna supply voltage 3.3V, 30mA maximum
GPS antenna supplied Magnetic base active GPS antenna
Typical GPS acquisition time Around 30 seconds after power-up
Dimensions 69 x 40 x 12mm, including connectors
Certification CE, FCC and UKCA
Warranty 2 years

GPS Holdover and Lock Behaviour

Operation requires a GPS signal, but temporary satellite signal loss is handled seamlessly without frequency or phase jumps. If GPS signal is lost, the digital PLL maintains the best estimated output frequency based on historical data. When GPS lock is reacquired, the output is brought back into sync with the GPS reference without glitches.

Active and passive GPS antennas are supported. The supplied active antenna uses a 5 metre cable and can be substituted with other common compatible antennas.

Package Includes

  • 1 x Leo Bodnar LBE-1421 GPSDO locked clock source
  • 1 x Magnetic base active GPS antenna

 

Shipping:

We have several shipping options for our products, including next-day and Saturday/Sunday delivery for certain items. Please see these options at checkout.

Returns:

If you have any equipment that needs to be returned to Martin Lynch & Sons, please fill out the form below:

Click here for returns form

Upon receipt of goods you have 14 days to return goods however the goods must be returned in original packaging and care must have been taken with the goods you wish to return. Under distance selling regulations you are not entitled to any refund on carriage charges or modification charges made at your request. Large items cannot be returned if they have been assembled, unless faulty.

Warranty Terms and Conditions

Outside of the 14 faulty return period, returned items cannot be accepted, unless covered by manufacturer's warranty. We will repair as much as possible on site however in exceptional circumstances products may have to be returned to the manufacturer of distributor.

For repairs/replacements under manufacturer’s warranty for any item please download a ML&S return form from the link above and return to ML&S with the faulty product.

International Warranty information

Warranty service for items we sell is available in the U.K. only, unless otherwise noted. It is your responsibility to pay freight for returned items to the U.K. and back to you for desired warranty coverage. All of our NEW products come with a minimum 12 month warranty, (Yaesu & Icom 24 months), with up to 90 days on second-hand equipment. Items returned for service must state "returned goods for repair" on the return air waybill or U.K. import customs duties apply and will be added to your invoice. For more info about returning items please contact our customer help desk, [email protected]