Gem Electronics Power Thru Balun

Get a Clear CCTV Picture 2000 Feet Away!


What's special about this balun?

  • Video Balun allows base-band composite video signals to be transmitted via a single unshielded twisted pair (UTP).
  • Each Balun is 100% tested for reliability and durability to guarantee your signal integrity.
  • Allows you to have increased picture quality for larger installations.
  • Click for More Features

The Gem Electronics GEM-BLN-PVRJ45-1 CCTV Power-thru Balun is designed to transmit video signals and remote power through single UTP (unshielded twisted pair) cable. One pair of terminals is balanced and the other unbalanced. One side is connected to electrical ground and the other carries the signal. The CCTV Power-thru Baluns are used in pairs and allow users you reduce their cabling costs while still retaining picture quality. The options open to you with this kit are coupling signals from remote video cameras, video capture, security and surveillance monitoring.

Part # Description Weight Price
GEM-BLN-RJ45PT BNC Plug to RJ45 Jack 6" Pigtails 1.8 lbs
  • Designed for use with CCTV cameras, monitors, switchers, sequencers, multiplexers, digital video, recorders (DVR) and other CCTV equipment.
  • No AC power batteries needed
  • Contained within an ultra small housing unit (1.29"L x 0.82" W x 0.95" D) for no interference with your equipment.
  • Warranty: one year
  • Increased picture quality over longer lengths; up to 2000 ft away
  • BI-directional signal conversion
  • Very small enclosure
  • Complete with RG45 Jack and BNC Male


Bandwidth : Video DC to 8 MHz
Maximum Input : 1.0 Vp-p
Impedance : 75 ohm to 100 ohm (or 75 ohm to 120 ohm on request)
Insertion Loss : Max 2 dB per pair over the frequency range from DC to 8 MHz
Return Loss : Greater than 15 dB over the frequency range from DC to 8 MHz
Common Mode Rejection : Greater than 40 dB at 8 MHz
Environment : Close-Circuit TV (CCTV) equipment for security and surveillance
Devices : CCTV cameras, monitors, switchers, sequencers, multiplexers, digital video, recorders (DVR) and other CCTV equipment
Connectors : RJ45 jack, BNC Male
Cable-UTP : Cat 5 or better - 100 ohms at 1 MHz
  Capacitance : 20 pf/ft
  Attenuation : 6.6 dB/1000ft at 1 MHz
Cable BNC : Impedance : 75 ohms at 1 MHz (RG59/U)
  Max 25' of coax allowed per end to end link
Max Distance : Color : Cat 5 2230' (680 m)
  Monochrome : Cat 5 2550' (780 m)
Environment Required : Operating temp. 0°C to 55°C
  Storage temp -22°C to 85°C
  Humidity up to 95%
Dimensions : 33.0 x 21.0 x 24.2 mm
Max Distance @ 24 VAC via Three Pairs of a UTP Cat 5 Cable (24 AWG) 5 VA : 519' (170 m), 10 VA : 285' (85 m), 20 VA : 120' (43 m), 30 VA : 86' (28 m), based on 10% voltage drop at camera. Longer distance may be achieved @ 28 VAC
Max Input Voltage : 50 volts (AC RMS/DC)
Max Current Rating : 4.5 A (AC RMS/DC)
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