Telegärtner offers a wide range of surge suppressors for the protection of electronic devices. They are designed for use in coaxial transmission lines to suppress high surge impulses, which are typically generated by lightning strikes in the immediate vicinity. Typical applications for the
F surge suppressors is in video monitoring / security systems, in head-end applications and outdoor broadcast vehicles.

The 2.7 GHz F Series gas discharge tube type suppressor functions by diverting high voltage surges from the centre conductor via the outer conductor to earth. When a defined voltage on the centre conductor of the coaxial line is exceeded, the gas discharge tube positioned between the inner and outer conductor fires and shorts them. Advantages of this type of suppressor are the high discharge currents (up to 20 kA, 8/20 Impulse), availability with a variety of spark-over voltages from 75 V to 1000 V, and broad-band suitability (d.c. to 2.7 GHz). The gas discharge tube can be replaced during service checks.

Technichal Information
Frequency range 0 - 2,7 GHz
Impedance 75 Ω
Max. Power 25 W
Discharge current

500 x 100 A ((10/1000 μs)
1 x 20 kA; 10 x 15 kA (8/20 μs)

Mating face

acc. IEC 61169-24

Mating cycles

≥ 500

Operating temperature

-30° C to +100° C

Performance Characteristics
  • Exchangable gas discharge tube
  • Spark-over voltage 230 V
  • Bulkhead type for bulkhead design
  • Earth connection directly to the surge suppressor
  • Panel sealed


Return loss up to 2,7 GHz

In addition to the 2.7 GHz F series surge suppressors, Telegärtner offers a wide range of lightning protection devices for a large variety of applications:

Type Frequency range Max. power Max. discharge current Series IMP sensitive applications Typical applications
2.5 GHz High-Performance-Suppressors with Gas Discharge Tube 0 - 2.5 GHz 300 W 1x40 kA
5x20 kA
N, 7-16 No GSM, WLL, Tetra
6 GHz Compact-Suppressors with Gas Discharge Tube 0 - 6 GHz 25 W 1x10 kA
10x5 kA
SMA, R-SMA, TNC, R-TNC, N                   No WLAN, WLL
λ/4 Shorting Stubs 380 - 2500 MHz 500 W 100x100 kA N, 7-16 Yes GSM, PCS, UMTS, Tetra