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422x.09-355-Txx

9 dBd HD omni antenna 340 - 370 MHz, low PIM
Description
  • The 422x Series omni antenna is designed for demanding applications where a durable and high performance colinear is required.
  • The centre fed dipole design and feed network gives a stable radiation pattern across a wide bandwidth, and allows tilted beam designs to be effectively employed without large pattern distortions.
  • High quality materials and manufacturing techniques are employed to ensure that the antenna has excellent intermodulation performance & wide bandwidth characteristics for multi-channel trunked radio communication systems.
  • The antenna has been designed to withstand lightning strike.
  • Former Skymasts brand product.
Specification
Electrical
Model 422x.09-355-Txx
Frequency 340 – 370 MHz
Max. Input Power 300 W
Omni Deviation < ± 1 dB
3 dB Beamwidth, H-Plane Omnidirectional
Polarisation Vertical
Peak Instantaneous Power (PIP) 25 kW
3 dB Beamwidth, E-Plane 8° ±1°
Impedance 50 Ω
Gain 8.7 dBd (10.9 dBi)
VSWR < 1.5:1
Passive Intermodulation -153 dBc (3rd Order, 2 x Tx @ 43 dBm)
(PIM value not guaranteed for N connector version)
Lightning Protection Lightning current handling capability :
200 kA According to EN 62305-1 (Test pulse 10/350 μs)
Antistatic Protection All metal parts DC-grounded (Connector shows a DC-short)
Environmental
Operating temperature range -40 °C to +70 °C
Survival Wind Speed 200 km/h
Ingress Protection IP56
Mechanical
Connection(s) 7/16 DIN(f), N(f) or 4.3-10(f)
Materials Antenna Base : Aluminium
Shroud : GRP tube 53 mm dia.
Mounting Section Al. tube 63.5 mm dia. x 350 mm long
Historic Brand Skymasts
Dimensions 5370 (l) x 53 (dia.) mm / 211.42 x 2.09 (dia.) in.
Wind Load 417 N (160 km/h)
Weight Approx. 13 kg / 28.66 lb.
Mounting Bracket 2141.01.00.00 (up to 120 mm dia.)
(Ordered Separately)

ETC-250 (50 to 76 mm dia.)
(Ordered Separately)
Ordering Codes
Model Product No. FrequencyAdditional Information

9 dBd HD omni antenna, low PIM

 4220.09-355-T0 340 – 370 MHz 7/16 DIN(f) ; 0° Electrical Tilt

9 dBd HD omni antenna, low PIM

 4220.09-355-T6 340 – 370 MHz 7/16 DIN(f) ; 6° Electrical Tilt

9 dBd HD omni antenna, low PIM

 4220.09-355-T8 340 – 370 MHz 7/16 DIN(f) ; 8° Electrical Tilt

9 dBd HD omni antenna, low PIM

 4221.09-355-T0 340 – 370 MHz N(f) ; 0° Electrical Tilt

9 dBd HD omni antenna, low PIM

 4221.09-355-T6 340 – 370 MHz N(f) ; 6° Electrical Tilt

9 dBd HD omni antenna, low PIM

 4221.09-355-T8 340 – 370 MHz N(f) ; 8° Electrical Tilt

9 dBd HD omni antenna, low PIM

 4223.09-355-T0 340 – 370 MHz 4.3-10(f) ; 0° Electrical Tilt

9 dBd HD omni antenna, low PIM

 4223.09-355-T6 340 – 370 MHz 4.3-10(f) ; 6° Electrical Tilt

9 dBd HD omni antenna, low PIM

 4223.09-355-T8 340 – 370 MHz 4.3-10(f) ; 8° Electrical Tilt
Additional Information
Installation Note

Please note that the survival wind speed stated in this specification is based on a static load test simulating a single gust of wind, according to EN 1991-1-4. Continuous flexure of the antenna, over long periods of time in extreme conditions, can cause a gradual deterioration in the structural integrity of the materials; this may result in a reduction of specifications or other failure of the antenna structure.

Mounting details

422x Mounting details

Diagrams

RADIATION PATTERNS

E-Plane | 355 MHz

E-Plane | 355 MHz

RADIATION PATTERNS

H-Plane | 355 MHz

H-Plane | 355 MHz

PROCOM A/S reserves the right to amend specifications without prior notice
PROCOM A/S • Smedetoften 12 DK 3600 Frederikssund • Denmark
Generated : 2026-06-22 Version 1