Product Tag - GPS

  • BNC to MCX GPSDO Pigtail – 12″

    0 out of 5
    • Adapts the clock input to accept a BNC Female connector.
    • RG-316 cable (High Quality / Small Size)
    • Used to connect the GPSDO to Airspy.
  • BNC to SMA GPSDO Pigtail – 12″

    0 out of 5
    • Adapts a BNC female to an SMA male.
    • RG-316 cable (High Quality / Small Size)
    • Used to connect the GPSDO to Elecraft and similar units.
    • also used to connect the Airspy to a BNC Female connector.
  • GPS Antenna – Base (Station)

    0 out of 5
    • GPS Base Station Antenna
    • INCLUDES mounting plate
    • Mount accepts Marine Threads (1″ x 14)
    • Built-in LNA
    • Covers GPS frequencies (1575 MHz)
    • SMA connector for use with the GPS-based units.
    • Cable length: 16.4 feet (5M)
    • Cable Type: RG-58
    • Gain: 28 dBi or more
    • Supply voltage: 3-5V DC

    More are currently on the way. This item should be back in stock shortly.

  • GPS Antenna – Magnetic

    0 out of 5
    • GPS Magnetic Mount Antenna
    • Covers GPS frequencies (1575 MHz)
    • SMA connector for use with the GPS-based units.
    • Cable length: 9.75 feet (3M)
    • Cable Type: RG-174
    • Gain: 28 dBi +/- 3 dBi
    • Supply voltage: 3-5V DC
  • 4 %

    Leo Bodnar GPSDO (reference clock unit)

    5.00 out of 5
    • Dual outputs to control two Airspy units
      or one Airspy and one Spyverter*
    • One of the most compact units on the market
    • Powered via USB or coaxial jack
    • Comes with GPS Antenna and USB cable
    • Connection cable in stock above
    • More info: Manufacturer's website
    • Note: Manufacturer's price is shown in Pounds. Our price is the equivalent in Dollars.
    • * Spyverter control requires a hardware modification (Spyverter R2x does not)
    $245.00 $235.00
  • Leo Bodnar Icom IC-9700 Reference Injection Board

    0 out of 5
    • Adds frequency reference/stability to the Icom IC-9700
    • This module allows locking the ICOM IC-9700 radio transceiver internal frequency reference, to an external 49.152MHz signal. If the internal reference is locked to a GPS signal, achievable ICOM stability can be better than 1Hz on all bands.
    • Installing this module inside the ICOM IC-9700 does not require any soldering or modification to internal circuitry. This modification is completely reversible and should not affect your warranty.
    • This module is designed to be used and has been tested with the Leo Bodnar GPS reference clocks signal sources.
  • Leo Bodnar LBE-1420 MINI GPSDO (reference clock unit)

    0 out of 5
    • SINGLE output to control Airspy or Spyverter R2x (or other devices)
    • One of the most compact units on the market
    • Powered via USB
    • Comes with GPS Antenna, and USB cable
    • More info: Manufacturer's website
    • Note: Manufacturer's price is shown in Pounds. Our price is the equivalent in Dollars.
  • LeoNTP 1200 (Network Time clock)

    0 out of 5

    LeoNTP Time Server 1200 is a Stratum 1 Master Clock / Time server with GPS synchronised clock source designed from the ground up with the sole purpose of providing a cost effective but highly accurate and extremely high performing networked time server. Extremely easy to setup and configurable with flexible power options USB/PoE (802.3af) it can provide accurate synchronised time for your LAN, WAN, CCTV, PLC, Telephone systems or anywhere accurate standalone time is required.

    Optional 1U rackmount for mounting one,two or three units (Rack mount kit comes with shelf, screws and 2 blanks. Each kit can take one, two or three LeoNTP 1200 units)

    Optional DIN Rail Mounting Kit

    Unit can sustain 100Mbps (> 100,000 NTP Packets a second)

    Traditional Master Clocks either have high performance or low cost. With LeoNTP Time Server 1200 you can have both in the same package.

    Key Features

    • True Stratum 1 NTP Compatible Master Clock / Time Server.
    • Can serve tens of thousands of clients.
    • Very cost effective
    • Supports NTP/SNTP
    • Front TFT Display for time display and configuration

    10/100Mb RJ45 Autosensing
    IPV4 DHCP/Static IP
    IPV6 SLAAC/Static (DHCPv6 not supported)

    NTP V2, V3, V4, SNTP V3, V4

    NTP Requests/sec:
    >100K (Wire speed) per unit.
    > 1million concurrent clients typical

    72 Channel
    -167dBm Sensitivity
    Power for active antenna supplied via bias tee.

    USB/ 48V PoE 802.3af

    Timing Performance:
    GPS Accuracy:
    30ns RMS, 60ns 99%
    Cold Start acquisition < 30s

    NTP Accuracy:
    < 1µS Hold over on loss of GPS signal Typically 1-4ms in 24 hours Reverts to Stratum 16 after 24 hours with no GPS

    Mechanical Dimension:
    140mm x 170mm x 45mm

    BNC Output:
    PPS/1Mhz/10Mhz Accuracy 30ns RMS, 60ns 99%

    1 year RTB
    Lifetime Firmware updates and support.

    In The Box :
    1 x LeoNTP Time Server 1200 Device
    1 x GPS Puck Antenna with 3 meter cable
    1 x USB Cable
    1 x 2 meter RJ45 Patch Cable

    See associated items for external timing antenna and BNC to MCX cables.

    LeoNTP 1200 Time Server Manual

    Latest Firmware

    Frequently Asked Questions:

    Q/ Is this unit based on Linux and NTP ?
    A/ No the hardware and code running it are completely propriety and don’t use any source code from Linux or NTP. This is done to ensure maximum performance with no overheads and security issues.

    Q/ Can I configure it via HTTP/Telnet ?
    A/ No. Running a web server on this device although entirely possible would reduce the performance of the unit. Therefore we took the decision to just do configuration via the front panel.

    Q/ The performance figures look too good to be true at the price
    A/ The performance figures are the result of a focused determination to get the best performance out of the hardware. By not using off the shelf hardware and software we have no overheads or compromises. Try it yourself using Miroslav Lichvar's ntpperf tool.

    It only starts to drop when the 100Mb interface is maxed out:

    nevis@test:~/ntpperf$ sudo ./ntpperf -i enp5s0 -m 70:B3:D5:E3:D0:04 -d -s -B
    | responses | TX timestamp offset (ns)
    rate clients | lost invalid basic xleave | min mean max rms
    1000 100 0.00% 0.00% 100.00% 0.00%
    1500 150 0.00% 0.00% 100.00% 0.00%
    2250 225 0.00% 0.00% 100.00% 0.00%
    3375 337 0.00% 0.00% 100.00% 0.00%
    5062 506 0.00% 0.00% 100.00% 0.00%
    7593 759 0.00% 0.00% 100.00% 0.00%
    11389 1138 0.00% 0.00% 100.00% 0.00%
    17083 1708 0.00% 0.00% 100.00% 0.00%
    25624 2562 0.00% 0.00% 100.00% 0.00%
    38436 3843 0.00% 0.00% 100.00% 0.00%
    57654 5765 0.00% 0.00% 100.00% 0.00%
    86481 8648 0.00% 0.00% 100.00% 0.00%
    129721 12972 15.49% 0.00% 84.51% 0.00% <- 100Mb Interface Saturated 194581 16384 43.65% 0.00% 56.35% 0.00% 291871 16384 62.43% 0.00% 37.57% 0.00%

    Q/ Can the unit be firmware updated?
    A/ Yes via USB into a Windows PC or Mac. Updates take about 5 seconds to apply.

    Q/ Is the BNC output compatible with the Airspy
    A/ Yes. Set the BNC output to 10Mhz. Connect the unit to your Airspy via the optional BNC to MCX cable and power the Airspy on.

    Q/ Can the unit display my local time ?
    A/ Yes. Press the button on the clock screen and use the knob to select your time zone.

    Q/ Whats the maximum length of coax to the antenna ?
    A/ This depends on the antenna and coax. We've tested our timing antenna (comes with 10 meters of coax) with a 20 meter extension and it works fine. The unit is POE so it may be easier to run a network cable closer to the antenna and install the unit there.

    Q/ Does the unit support IPv6
    A/ Not currently its in the pipeline and will be available to all units on release via firmware update.

    Q/ What happens on loss of GPS Signal
    A/ The unit enters failover mode which uses internal compensation to maintain the accuracy of the timing to 1-4ms typically over 24 hours. After 24 hours with no GPS signal the unit reverts to being a Stratum 16 time source.

    Q/ Leap Second Support
    A/ The unit has leap second support and a count down timer to the next leap second insertion.

  • LeoNTP 1200 Rack Mount Kit

    0 out of 5

    LeoNTP 1200 1U rackmount for mounting one,two or three units (Rack mount kit comes with shelf, screws and 2 blanks. Each kit can take one, two or three LeoNTP 1200 units)

  • Raspberry Pi GPS/RTC Expansion Board

    0 out of 5

    NEW FOR 2020 Now with RAW Output & Hardware RTC


    The Uputronics Raspberry Pi GPS/RTC Expansion Board provides a modern multi GNSS GPS receiver and hardware RTC with quick no soldering required connection to all Raspberry Pi boards with the 2×20 header (the original Pi Model A/B are not supported). Featuring PPS (Pulse per second) output to permit the use of the board for PPS disciplined NTP servers, RAW output available from the UBlox™ GPS module and twin super caps for GPS hot start/setting retention & maintaining RTC.


    This board retains backwards compatibility with previous generation Uputronics Pi GPS boards. With its features and ease of installation we believe this is the ultimate GPS /  RTC HAT for the Raspberry Pi.


    GPS Specifications:

    • 72-channel u-blox™ M8 engine
    • Up to 3 concurrent GNSS (BeiDou,Galileo,GLONASS,GPS/QZSS)
    • Default GNSS: GPS/GLONASS.
    • -167dBm Navigation Sensitivity
    • 10Hz navigation rate in multiGNSS mode, 18Hz in GPS only
    • RAW Output available via UBX-RXM-RAWX Message
    • 3V supplied to antenna port to power active antenna
    • Antenna requirements: Active 3V Ceramic Patch
    • No EEPROM settings must be sent at power up or saved to battery backed RAM.
    • Default baud rate: 9600bps
    • I2C Bus (Address 0x42)
    • Robust SMA antenna connection.


    For full documentation please consult the u-blox 8/u-blox M8 receiver description including protocol specification document (UBX-13003221) linked here:


    RTC Specifications:

    • Micro Crystal RV-3028-C7 Real Time Clock Module
    • Factory calibrated ±1 ppm @ 25°C
    • I2C Bus (Address 0x52)
    • Built in kernel compatibility
    • Provides year, month, date, weekday, hours, minutes and seconds


    In The Box

    1 x Raspberry Pi GPS/RTC Expansion Board
    4 x 11mm standoffs w/8 M2.5 Screws
    1 x Header with 4.93mm tails

    Full Data Sheet Here :

  • Raspberry Pi+ GPS Expansion Board

    0 out of 5

    This is an GPS expansion board designed specifically for the both the version 1,2 and 3 Raspberry Pi+ Models.

    This board is designed for applications that use a GPS connected via the serial ports to the Raspberry Pi such as timing applications or general applications that require GPS information. To facilitate PPS the time pulse output is connected to a GPIO so you can utilize this board to give NTP PPS discipline. PPS does not work without an antenna.

    This board is equipped with the latest Ublox MAX-M8Q positioning module and high quality filtering capacitors and inductors throughout. The MAX-M8Q features a RTC Crystal, very low power usage and high performance. Although not a true timing module it is more than adequate for a Pi based NTP Server. Its worth noting the module can, with a serial command, be placed in “Stationary” dynamic mode which is the default mode for the much more expensive timing modules.

    The board features an SMA connector for an active patch antenna (see related products) power and PPS LED's. On the top is a super capacitor which can be used to retain any custom settings in the event of power loss (If the module is commanded to do so ). The MAX-M8Q is connected via serial to the Pi and the PPS is connected to GPIO18 (pin 12).

    A 2×20 way header is supplied and 2 suitable standoffs providing a very robust solution. The board follows Raspberry Pi's HAT physical layout with camera and display port notches. It is possible to stack additional HAT's on top of this board with the stacking header.

    To use this board to make a Stratum 1 NTP Server please follow these instructions here :

    Datasheet available here

    For the communication protocol see the u-blox 8 / u-blox M8Receiver DescriptionIncluding Protocol Specification.

    (The command to save settings is CFG-CFG)

  • SMA to MCX GPSDO Pigtail – 12″

    0 out of 5
    • Connects the Airspy R2 clock input to a SMA connector.
    • Used to connect the GPSDO MINI to Airspy Reference input.
    • 12″ in length