10pcs Retevis HA02 Foldable Tactical Walkie Talkie Antenna SMA-F High Gain For Baofeng UV 5R UV 82 BF888S Radio for Airsoft Game
10pcs Retevis HA02 Foldable Tactical Walkie Talkie Antenna SMA-F High Gain For Baofeng UV 5R UV 82 BF888S Radio for Airsoft Game
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SPECIFICATIONS
Brand Name: RETEVIS
Item Type: Antenna
Origin: Mainland China
Model Number: HA02
Why Retevis showed the VSWR less than 1.5 on the advert, but I measure higher than 1.5?
1.The accuracy of the measuring instrument. The Retevis factory uses professional measuring equipment(very expensive than handheld devices), which is more accurate than ordinary handheld devices.
2.Each antenna has a center frequency point. At this frequency point, the VSWR value is the lowest and the use effect is the best. So try to measure around 144MHz/430MHz.
Description:
The antenna is an omnidirectional hand-held antenna with high gain, wide bandwidth, low standing wave ratio, waterproof, anti-corrosion, high-strength quality package, strong wind resistance, etc. It is an ideal communication antenna, antenna design style, disassembly and assembly. Convenient and easy to use.
Specification：
Brand |
Retevis |
Model |
HA02 |
Color |
Black |
Frequency |
VHF&UHF VHF:136-174MHz UHF:400-470MHz |
Gain |
5dBi |
S.W.R |
<1.5 |
Polarization direction |
Vertical |
Radiation direction |
Omni |
Connector |
SMA-F |
Max Power |
20w |
Impedance |
50Ω |
Length |
73.5cm/28.94in |
Weight |
102g |
Applicable Model: Suitable for walkie-talkies with SMA-M RF connectors.
Attention please :Do not suitable for Retevis RT5
Buyer Show
XV analyzer a little more than 2 showed, but in fact it is less, in the end I will explain why. FM when receiving a weak signal: RHD 771 signal/noise ratio 50/50, Discoverability is bad 35/75, have to listen to understand, more noise. N02 S/sh 75/25, disability 100/0. Listened to railways at 153 MHz, at the window (the window exits 90 degrees from the signal source) RHD 771 and nan02 accept. I leave the window RDH 771 noising once opened, on the N02 everything clearly. Even further RHD 771 does not catch, N02 takes, noumoab opens. Distance to railway 20km. At 444 MHz N02 is slightly inferior to RHD 771. Does not fit, continuation in the additional review. 13 Apr 2020 14:23
Additional Feedback
From the generator to the regular sent a signal, at a distance of SDR, connected rhd771 then N02, all in the photo. FM 104,2 MHz is a radio station signal. for XV: when connecting to the XV radio station, the meter readings were 0,5 less than on the analyzer. The body, hands, the position affects everything. Shorter: the correct position of work from the radio station, it is, to keep at the level of the head at a distance of about 20 centimeters, the antenna strictly vertically. The antenna N02 is set to comply with this condition. respectively ceb: 138mhz-1,05/140-1,05/142-1,06/144-1,15/146-1,21/148-1,32/150-1,5/152-1,6. 420mhz-4,1/430-2,2/435-1,99/440-1,8/445-1,7/450-1,68/470-2,8/480-4,8/490-7,5/500-11,2. At ccp-2 power loss 10%. when connecting one counterweight 46 cm at an angle of 90 degrees by 144.5mhz on the last photo. 444 readings do not change. retevis antennas are good and especially in terms of setting. small gap when installing on the walkie-talkie.
Package Details:
10 x VHF&UHF Foldable SMA-F Antenna
