ARYCKM-A-25XZ Directional Yagi Antenna 2 elements 73-77 MHz
Directional antenna for 73÷77 MHz band. This model has a bandwidth of 4 MHz. Designed for severe climatic conditions, it comes with a stainless-steel support and radiant dipole in aluminium or stainless steel. On request, it is possible to protect the adapter with a radome cover. The fixing clamp is made of hot galvanised iron and stainless-steel bolts. The whole antenna is electrically grounded. Strong interference rejection on adjacent frequency bands, often eliminating additional filters.
Thanks to its robust mechanical design and narrowband pattern, the ARYCKM-A-25XZ is particularly suitable for professional VHF systems such as public-safety and emergency networks, utility and industrial radio, SCADA and telemetry links, and transport or infrastructure communications where a stable directional antenna in the 73–77 MHz band is required.
MOD. ARYCKM-A-25XZ
ELECTRICAL DATA
Frequency range A MHz 73÷77
Bandwidth MHz 4
Gain max. dBi 5.5
Front to back dB ≥15
VSWR ≤1.5:1
Nominal impedance Ω 50
Polarization V/H
H beamwidth typ. -3 dB 110°
E beamwidth typ. -3 dB 65°
Max Power W 700 W
Connector Nf
Lightning protection All metal parts are D.C. grounded
Frequency range A MHz 73÷77
Bandwidth MHz 4
Gain max. dBi 5.5
Front to back dB ≥15
VSWR ≤1.5:1
Nominal impedance Ω 50
Polarization V/H
H beamwidth typ. -3 dB 110°
E beamwidth typ. -3 dB 65°
Max Power W 700 W
Connector Nf
Lightning protection All metal parts are D.C. grounded
MECHANICAL DATA
Dimension length mm 2000 x 1500 x 100
Weight without clamp kg 2 (aluminium dipole) – 2.5 (stainless-steel dipole)
Wind surface typ. m² Front 0.05 Side 0.09
Front wind load typ. kg 8 (160 km/h)
Side wind load typ. kg 14 (160 km/h)
Mounting mm Ø 40÷114
Dimension length mm 2000 x 1500 x 100
Weight without clamp kg 2 (aluminium dipole) – 2.5 (stainless-steel dipole)
Wind surface typ. m² Front 0.05 Side 0.09
Front wind load typ. kg 8 (160 km/h)
Side wind load typ. kg 14 (160 km/h)
Mounting mm Ø 40÷114
MATERIALS / MAXIMUM OPERATIVE TEMPERATURE
Stainless steel – Aluminium – Teflon – Brass – operating temperature -30°÷+80°C without radome
Stainless steel – Aluminium – Teflon – Brass – operating temperature -30°÷+80°C without radome
ACCESSORIES
RAD5087 RADOME polyvinyl chloride
ZAFZ25/114C CLAMP hot-dip galvanizing – weight 1.9 kg
RAD5087 RADOME polyvinyl chloride
ZAFZ25/114C CLAMP hot-dip galvanizing – weight 1.9 kg
PACKAGING
Ordering and packaging informations:
ARYCKM-A-25X7377A aluminium dipole *
ARYCKM-A-25X7377I stainless-steel dipole *
Packaging mm 2200 x 180 x 180
Total weight with clamp kg 5
Ordering and packaging informations:
ARYCKM-A-25X7377A aluminium dipole *
ARYCKM-A-25X7377I stainless-steel dipole *
Packaging mm 2200 x 180 x 180
Total weight with clamp kg 5
Frequently asked questions about ARYCKM-A-25XZ
Some common questions about the ARYCKM-A-25XZ directional narrowband Yagi antenna 73–77 MHz:
For which applications is the ARYCKM-A-25XZ antenna used?
The ARYCKM-A-25XZ is a directional narrowband Yagi antenna for the
73–77 MHz VHF band, with 4 MHz bandwidth and
maximum gain of about 5.5 dBi. It is suitable for
professional VHF radio networks, public-safety and emergency
services (fire brigades, police, ambulance, civil defence), as well as
utility and industrial radio systems, SCADA and telemetry links
and communications for transport and critical infrastructures that require
high interference rejection on adjacent frequency bands.
Which electrical performance does the ARYCKM-A-25XZ offer?
The antenna operates from 73 to 77 MHz with
4 MHz bandwidth, gain 5.5 dBi,
front-to-back ratio ≥ 15 dB, VSWR ≤ 1.5:1 and
50 ohm nominal impedance. It supports V/H linear
polarisation with typical -3 dB beamwidths of
110° in the H-plane and 65° in the E-plane. Maximum RF power
is 700 W with N-female connector, and all metal parts
are DC grounded for lightning protection.
What mechanical characteristics and materials does the ARYCKM-A-25XZ have?
The ARYCKM-A-25XZ has approximate dimensions of 2000 x 1500 x 100 mm.
Weight without clamp is about 2 kg for the aluminium dipole version and
2.5 kg for the stainless-steel version. Typical wind
surface is 0.05 m² front and 0.09 m² side,
with wind loads of about 8 kg (front) and 14 kg (side)
at 160 km/h. Materials include stainless steel, aluminium, Teflon
and brass, with an operating temperature range of -30°÷+80 °C
without radome.
Which accessories, radome and ordering options are available?
Available accessories include the RAD5087 polyvinyl chloride
radome, which protects the adapter, and the
ZAFZ25/114C hot-dip galvanised clamp weighing about
1.9 kg. Ordering codes are ARYCKM-A-25X7377A for the
aluminium dipole version and ARYCKM-A-25X7377I for the stainless-steel
dipole version. Packaging is approximately 2200 x 180 x 180 mm with a
total weight of about 5 kg including clamp.
Related topics and searches
Typical queries and applications related to the ARYCKM-A-25XZ directional VHF antenna:
73–77 MHz directional VHF Yagi antenna
narrowband Yagi 4 MHz bandwidth
public-safety and emergency VHF antenna
utility, industrial, SCADA and telemetry radio
stainless-steel Yagi with RAD5087 radome
ZAFZ25/114C clamp for Ø 40–114 mm masts
Protel professional VHF directional antennas
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