NEW telescopic 2m VHF handheld transceiver and scanning receiver antenna with BNC-male connector. Six section telescopic with black anodized finish. Extends from 10-1/4"(265mm) collapsed to 42-1/2" (1080mm) extended. Set length to quarter wavelength of operating frequency. Fits hand held transceivers and scanning receivers that have an BNC-female antenna jack.
SPECIFICATIONS: Tx Frequency range 135-155 MHz with VSWR < 1.5:1, Rx Frequency Range 25-1200MHz, Gain rated up to 3.5 dBi, Extends from 10-1/4" to 42-1/2", BNC Connector
For transmitting, you must set the antenna length as close as possible to the transmitting frequency’s 1/4 wavelength. This ensures the best possible transmission by using the proper standing wave ratio (SWR). Use this formula to calculate the proper length for a 1/4 wavelength transmitting antenna: 2834/Freq. in MHz = Antenna Length in Inches. Example: 2834/147 (MHz) =19.3 Inches
For the best reception when using with handheld scanner, adjust the antenna length as shown below
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