#UHF


... Radio, telecom, computers ...

Review: Handheld antennas comparison

Antennas for portable equipment presented below:

The first antenna presented is from Jetfon a 2m / 70 cm dual-band handheld radio antenna led stubby Tx, the price is 15 EUR, technical specifications here:

Code Type Length Weight Power rating Connector Colour
DB-110 M/F 1/4 λ <= 11.5 cm. <= 11 gr. 10 W SMA M / F Red (M) / Green (F)

The next antenna I have tested and used on a daily basis is from D-ORIGINAL, dual-band 70 CM and 2 m lambda, price expected 10 EUR, specs below: 

Code Type Length Weight Power rating Connector Colour
DX-DB-45-LED-M/F 1/6 λ? 40 mm. < 10 gr. 10 W SMA M / F Black with red LED light

One of the antennas which are my daily driver in terms of performance is Nagoya NA-701, dual-band 70 CM and 2 m lambda, price expected 20 EUR, technical specs below: 

Code Type Length Weight Power rating Connector Impedance
NA-701 1/4 λ 17 cm. < 25 gr. 10 W SMA M, F or BNC 50 Ω

Besides a good performance in the field for transmission (acceptable SWR) offers wide receiving coverage 120 / 150 / 300 / 450 / 900 MHz. 

One of the radials I am using is from Komunica which is performing well, a couple of tech details:

CodeGainTypeImpedancePower ratingConnector
PWR-SRH-5193 dBi1/4 λ
50 Ω
10 WSMA

A mini dual-band antenna (144/430 Mhz) with extended receive coverage (150/300/450/800Mhz) weighs just 9 grams and 21 cm length.

Review: Motorola MTH 800

Contrary to popular belief, Lorem Ipsum is not simply random text. It has roots in a piece of classical Latin literature from 45 BC, making it over 2000 years old. Richard McClintock, a Latin professor at Hampden-Sydney College in Virginia, looked up one of the more obscure Latin words, consectetur, from a Lorem Ipsum passage, and going through the cites of the word in classical literature, discovered the undoubtable source. Lorem Ipsum comes from sections 1.10.32 and 1.10.33 of "de Finibus Bonorum et Malorum" (The Extremes of Good and Evil) by Cicero, written in 45 BC. This book is a treatise on the theory of ethics, very popular during the Renaissance. The first line of Lorem Ipsum, "Lorem ipsum dolor sit amet..", comes from a line in section 1.10.32.

The standard chunk of Lorem Ipsum used since the 1500s is reproduced below for those interested. Sections 1.10.32 and 1.10.33 from "de Finibus Bonorum et Malorum" by Cicero are also reproduced in their exact original form, accompanied by English versions from the 1914 translation by H. Rackham.

Review: Hytera AR 685

Review: Hytera AR 685

You wanna know how I got these scars? My father was… a drinker, and a fiend. And one night, he goes off crazier than usual. Mommy gets the kitchen knife to defend herself. He doesn’t like that, not one bit. So, me watching he takes the knife to her, laughing while he does it.