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QHAM 2500-RC/...

Circularly Polarized Quadrifilar Helix for Mast Mounting

  • Quadrifilar helix antenna for fixed installation.
  • Two models within the 2.5 GHz band covering 2300 - 2500 MHz and 2530 - 2660 MHz, respectively.
  • Right-hand circularly polarized antenna (RHCP).

DESCRIPTION

  • Ideal for “base station” receiving antenna when communicating with transmitting antenna on portable device (e.g. as receiving antenna on board a helicopter communicating with portable camera on a motor bike or situations similar to this).
  • The circularly polarized antenna minimizes the fading effect often encountered in environments with reflecting obstacles.
  • Suitable for mounting on 1” threaded water pipe.
  • Comprehensive range of accessory mounting brackets available to make the perfect installation for your specific needs.

ORDERING DESIGNATIONS

TYPEFREQUENCYPRODUCT NO.
QHAM 2500-RC/l2300 - 2500 MHz110000156
QHAM 2500-RC/h2530 - 2660 MHz110000206

SPECIFICATIONS

ELECTRICAL 
MODELQHAM 2500-RC/...
ANTENNA TYPEQuadrifilar helix antenna
FREQUENCYl: 2300 - 2500 MHz
h: 2530 - 2660 MHz
IMPEDANCENom. 50 Ω
POLARIZATIONCircular right-hand
COVERAGEHemispherical
GAINApprox. 2 dBic 0 dBd
BANDWIDTH130 - 200 MHz (dep. on model)
SWR≤ 2.0
MAX. POWER2 W
ANTISTATIC PROTECTIONAll metal parts DC-grounded (Connector shows a DC-short)
MECHANICAL 
TEMP. RANGE-30°C → +70°C
CONNECTORFME-male
WIND SURFACEApprox. 0.0072 m²
MAX. WIND SPEED200 km/h
WIND LOADApprox. 9.6 N @ 150 km/h
COLOURMarine white
MATERIALSShroud: Weather resistant low loss plastic
TOTAL HEIGHTApprox. 23 cm
ANTENNA DIA.33 mm
WEIGHTApprox. 140 g
MOUNTINGOn 1” threaded water pipe or on PROCOM 1” mounting brackets (see below)

 ACCESSORIES (to be ordered separately)

Bjaelke-Qham-acc-GB

 

VERTICAL RADIATION PATTERN

GPS-4-udstraalling

 

 

 

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