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SparkFun

$42.45 |
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A 300mm (1 foot) SMA male to TNC male cable with injection-moulded stress-relief boots. Built with SYV-50-3 cable for an excellent balance of low signal loss...

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A 300mm (1 foot) SMA male to TNC male cable with injection-moulded stress-relief boots. Built with SYV-50-3 cable for an excellent balance of low signal loss and high flexibility — chosen over RG58 for superior performance at GNSS frequencies.

Ideal for connecting RTK development boards to high-quality GNSS antennas. The 300mm length is well suited for monopole or tripod-mounted devices without excess cable.

Key Features

  • SYV-50-3 Cable – Lower loss than RG58 (52dB vs 46dB per 100m) with excellent flexibility
  • Reinforced Connectors – Injection-moulded stress-relief boots for field use
  • 50Ω Impedance – Standard nominal impedance

Specifications

  • Cable Type: SYV-50-3
  • Length: 300mm (1 foot)
  • Connectors: SMA Male to TNC Male
  • Impedance: 50Ω
  • Loss at 300mm: ~0.16dB

Signal Loss by Frequency

  • 200MHz: 23.74 dB/100m
  • 400MHz: 33.93 dB/100m
  • 900MHz: 51.80 dB/100m
  • 1800MHz: 69.40 dB/100m
  • 1900MHz: 77.06 dB/100m
  • 2000MHz: 79.21 dB/100m
  • 2400MHz: 87.40 dB/100m
  • 3000MHz: 98.68 dB/100m

Ideal For

  • RTK and GNSS antenna connections
  • Surveying and precision positioning
  • Field-deployed RF equipment

Package Contents

  • 1× SMA Male to TNC Male Cable (300mm)

Jargon buster

Plain-language definitions for the technical terms used above.

GNSS
GNSS stands for Global Navigation Satellite System, an umbrella term for satellite positioning networks such as GPS, GLONASS, Galileo and BeiDou. Receivers use these satellites to determine position, and high-precision units can output a steady stream of serial position data.
Impedance
Impedance is the total opposition a component or circuit presents to alternating current, measured in ohms, combining resistance with frequency-dependent reactance. It appears in many contexts, such as matching a speaker's impedance (for example 4 ohm or 8 ohm) to an amplifier or the input and output impedance of signal circuits, and a correct match helps avoid weak signals, distortion or damage.
RF
RF means radio frequency, referring to signals used for wireless communication and other high-frequency electronics. A low-noise, stable power supply is important for RF circuits because power noise can affect signal quality and measurements.
RTK
Real-Time Kinematic positioning is a GNSS technique that uses correction data from a base station to greatly improve location accuracy. It matters if you need centimetre-level positioning for robotics, mapping, surveying, or tracking rather than ordinary metre-level GPS accuracy.
SMA
SMA is a small threaded coaxial (RF) connector widely used to attach antennas and other radio-frequency cables. A device with SMA antenna ports needs antennas or pigtails with matching SMA connectors, or a suitable adapter, to connect to them.

Supplier page — sparkfun.com

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