Antenna parameters:
1. Frequency range: VHF 76-350Mhz / UHF 250-500Mhz
2. Antenna gain: UHF 8DBI, VHF 6DBI
3. Withstand power: 25W
Instructions for use:
Thank you for choosing U/V Pocket Yagi. The antenna allows the radio station to increase the communication distance, optimize the signal quality and improve the anti-interference ability. The unique gain directivity of its Yagi structure can also provide radio directional functions for radio stations. It is suitable for radio communications, tracking and orientation of animals and plants, and radio interference investigations. The antenna is designed as a foldable main beam, a retractable vibrator, and is very light. It is easy to store and expand quickly, and is a good assistant for outdoor broadcasting work.
Instructions:
The antenna has been equipped with a UHF section vibrator. The vibrator unit close to the handle is a reflection unit, the middle vibrator unit is an excitation unit, and the vibrator unit far from the handle is a guide unit. Then adjust the length of the vibrator.
UHF (430-440Mhz) tuning method:
Without pulling out the lead unit, pull the excitation unit out of the thinnest part, and the reflection unit out of the thinnest part and half. So far, the 430-440Mhz UHF frequency band has been adjusted.
UHF (409 public frequencies):
The guide unit pulls the thinnest part, the excitation unit pulls two of the thinnest parts, and the reflection unit pulls three of the thinnest parts.
VHF (144-148Mhz) tuning method:
The excitation unit is pulled out by two thirds, and the reflection unit is pulled out by three minutes.
FM radio frequency (center frequency is 76-108, 98 MHz)
The excitation unit pulls out the thinnest 4 parts, and the reflection unit pulls out the thinnest 5 parts.
The above are adjustment parameters covering general frequencies. If you need to use them at other frequency points, please use a talented standing wave meter and other equipment to adjust.
prevention:
When receiving a ground target, hold the handle, extend the arm flat, and make the vibrator unit perpendicular to the ground. If the oscillator is parallel to the ground, it will affect the gain lobe and make it at a certain angle with the ground, which is not conducive to long-distance ground communication. If you use an adapter to extend the feeder, please adjust the length of the vibrator appropriately.
Advanced gameplay:
Click on the link below to view the forecast of the ultraviolet portion of the atmospheric duct, and then use the Yagi antenna to aim it at the horizon. It can communicate over long distances. The record of the longest connection of this antenna reaches 600km.
//www.dxinfocentre.com/tropo_eas.html?from=groupmessage&isappinstalled=0
