We recently launched the HA-02M03G01-NF, which is considered an upgrade version of HA-02M03G-NF with attributing to the persistent research of FT-RF CEO - Mr. Chen and RD team. This becomes one of the largest designs in the line of Double Ridged Antennas, despite the fact that the product weighs only 15kg. 

This product's specifications are listed below. With a frequency range of 200 MHz to 3 GHz, it was tested at 3 different distances: 1M, 3M, and 10M.

記者蕭保祥／台北士林報導

Double Ridged Horn Antenna
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The horn antenna is a broadband passive device, shaped like a pyramid horn, referred to as a TEM antenna, which guides the beam of radio waves at a precise frequency. FT-RF Double Ridged Horn antennas have frequency capabilities ranging from 400MHz to 40GHz depending on type and style. These series are characterized by a huge frequency range and extremely high input powers. With increasing frequency, the gain rises to a maximum of 18 dBi. At higher frequencies, the increased gain compensates for the increasing cable losses.

The advantages of Horn antenna:

- Wide bandwidth: Because the horn antenna has no resonant parts, it can function over a wide range of frequencies.

- Easy waveguide interface: These antennas are very easy to interface to waveguide due to their shape, but they can also be designed with a transition so that a regular coaxial feeder can be used.

- Easy to make, simple design.

The horn is suitable for both transmitting and receiving purposes, especially suitable for EMC and immunity test measurements.

Recommended Accessories

- Antenna Tripod: easy and fast-changing polarisation. 100% stable handling

- SMA Cable: High-quality special SMA cable

▲吳東融是龍隊內野手。（資料照／記者劉彥池攝影）

告別「彈力球年代」，台灣中華職棒2021年降低使用球恢復係數後，觸擊短打推進戰術變多，味全龍內野手吳東融高中曾有日本留學經驗，他對於短打的重要性，感受相當深，「短打對日本人來說，是最基本的。」

21日賽前天母球場受訪，吳東融說明，會有短打暗號是分數接近 要把跑者送上得點圈，「所有戰術裡面，短打戰術應該是要最高的，我會蠻重視短打，為了贏球，需要一些戰術。」

根據吳東融的認知，從日本職棒的投打數據就可以看出投打對應關係，可以理解日本為何很常使用觸擊戰術。

吳東融到台北念新埔國中時，教練何献凡會為了講解短打聚集全隊，吳東融從機率來說，一壘有人需要2支安打得分；如果是短打成功送上得點圈，1支安打就可以得分。

「守備也會有壓力，跑者在一壘、或是二壘，守備壓力不一樣，投捕的配球也會不一樣。」吳東融認為，「也不是說短打一定好，或是不短打就不好，畢竟是成功率最高、自己可以掌握的戰術，需要的時候還是需要。」

吳東融說，「如果你是教練 遇到一個選手連短打都沒信心 你還可以做什麼暗號嗎？」吳東融在日本念書時，曾經對著投球機練短打2小時，知道短打是必備的基本能力。

「比賽不一定會用（短打），也不一定要用，但台灣選手普遍短打能力都沒有到很好，在國際賽也比較不會做，需要從基層重新練。」吳東融有感，很多高層級的選手短打能力都很好。

吳東融說，「人家可以選擇點，但是他也可以不用做戰術。但我們是需要這戰術，但是反而點不好，就會有人說『怎麼不讓他打就好』，重點是這種基本能力沒做好，我們需要也沒辦法用，台灣的選手需要去進步的地方。」

戰術空間會影響守備壓力，吳東融認為有戰術能力的球隊相對是難守，「如果碰到戰術做不好的球隊，壓力就沒有那麼大……先看基本能力有沒有，再決定我要不要做。」