The GRH-TPM is a rugged ground independent VHF half wave whip antenna, designed for dependable performance across the 148-174 MHz VHF band and widely used in emergency services, utilities, mining, and heavy vehicle communications where reliability and durability are critical.
This antenna operates in the same class of ground-independent base loaded VHF whip antennas available from other suppliers, delivering consistent performance without the need for a ground plane, making it highly effective across mixed vehicle fleets and non-ideal mounting surfaces. Its stainless steel flexible whip construction provides excellent mechanical strength for harsh environments where vibration, impact, and continuous field use are expected.
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The GRH-TPM is a rugged ground independent VHF half wave whip antenna, designed for dependable performance across the 148-174 MHz VHF band and widely used in emergency services, utilities, mining, and heavy vehicle communications where reliability and durability are critical.
This antenna operates in the same class of ground-independent base loaded VHF whip antennas available from other suppliers, delivering consistent performance without the need for a ground plane, making it highly effective across mixed vehicle fleets and non-ideal mounting surfaces. Its stainless steel flexible whip construction provides excellent mechanical strength for harsh environments where vibration, impact, and continuous field use are expected.
The GRH-TPM supports field trimming across a 4 MHz bandwidth, allowing precise tuning to achieve optimal SWR and system performance for specific channel allocations. With a 2.1 dBi gain rating and 50W power handling capability, it delivers stable, efficient VHF communication performance across mobile and fixed installations.
Fitted with a standard UHF male (PL259) connector, it integrates seamlessly with existing VHF vehicle antenna bases and mounting systems, including GRH-series mounts and common PL259/UHF female termination hardware. At 1.17 metres in length (trim to tune), it provides an ideal balance between electrical performance and practical vehicle deployment.
As part of the ZCG Scalar VHF antenna range, the GRH-TPM is Australian designed and manufactured, offering a reliable alternative in the ground-independent loaded base VHF whip style antenna category, commonly used across critical fleet communications. It delivers strong mechanical durability, field serviceability, and consistent RF performance for organisations requiring dependable VHF connectivity in demanding operational environments.
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