loading.gif
Notes
Login Sign Up Shopping Cart 简体中文
Add to my favorite categories
category Antennas
Path Yahoo Bid > Hobbies & Crafts > Wireless Devices > Antennas
Remarks
Add my favorite keywords
Keywords
category Antennas
Remarks
Join my favorite seller
Seller 9RCtm***
Remarks
Add to my blacklist seller
Seller 9RCtm***
Remarks
Yahoo Bid Hobbies & Crafts Wireless Devices Antennas
1200MHz用 34エレメント パラレルループ八木 高性能アンテナ
 
        

反射板は8角形に変更しました。

反射板は8角形に変更しました。

  • Product Quantity
    : 1
  • Starting Bid
    :99,999円
  • Highest Bidder
    : / Rating:
  • Listing Date
    :2026年01月08日 09時47分
  • Bidding closes on
    :2026年01月12日 21時47分
  • Auction Number
    :d1180343735
  • Condition
    :New product
  • Automatic Extension
    :Yes
  • Authentication
    :No
  • Early Closing
    :Yes
  • Can I return the product?
    :no
  • Description
  • Q&A ()
  • Cost Estimator
  • Problem Item Response Procedur
Notes
  1. Radio communications related products (import and export documents required) cannot be assisted in importing.


1200MHz用 34エレメント パラレルループ八木 超高性能アンテナ

エレメント数が同じ通常の八木広帯域アンテナとのゲイン比較をしていますが
やはりエレメント間の結合が強く 本来広帯域性のループ八木に軍配は上がります!
ただし 製作はとても大変で どうしても重量も重くなり ます。
支えるブーム・サブブームも太くしなければならず コストは30%ぐらい多くかかりますが
しかし 聞こえない局とは通信はできません!
同一エレメント数の通常の広帯域八木アンテナでRS41の信号はRS52~53まで上がります。
数多くの実験での結果です!!

DX通信には超お勧めのアンテナです。


各エレメントには幅広で厚みのある圧延加工により硬質化したアルミ板を使用。
硬質化したアルミニュウム板エレメントは幅も広く厚みもあり機械的強度、高周波での特性も優れています。
使用中に緩むこと、向きが変わることはありません。
高周波的にも経年劣化しません。
8角形に変更したアルミメッシュ反射板2枚構成

ラジエーターは 純銅製の15㎜幅平板をロールで潰し、加工硬化により極めて硬く厚みが十分なオープンループに仕上げました。
給電位置はエレメントの下部からブーム取り付け位置(同軸ケーブル外皮を接続)の反対側に
同軸ケーブルの芯線を直接はんだ付けしました。
機械的強度も上がり高周波的にも安定した給電ができます。


一般にはブームには丸型アルミニウムパイプを使用することが多いようですが
このアンテナには厚みが2.0㎜の20㎜角アルミニウムパイプを使用しました。
エレメントをしっかり取り付けるには角パイプのほうが優れています。
曲げにもとても強いのでしっかりしたアンテナに仕上がりました。

垂直偏波が一般的なためにアンテナブーム2か所20㎜角のアルミニウムパイプで補助部品を作りました。
マスト取り付けは25㎜角パイプ仕様で極めて強固な支持。
8㎜φUボルト2本により30~50㎜φのマストにしっかり取り付けできます。

当方 貴金属装身具製造を生業としておりますので可能な範囲で丁寧に製作しておりますが 多少ですが 擦りキズ、塗装むらがあります。ご理解・ご了承ださい!

ブーム長は.2.5m
アンテナ利得:推定利得 約22dbd(1/2波長ダイポール比) 約24dbi
アンテナサイズ:全長約2.5m 
アンテナパラレル間隔  約85㎝
アンテナ重量 垂直偏波用取り付け部品とも約3.7kg
回転半径 約150㎝
給電ケーブル長 約50㎝、2分配器接栓は、NJ
給電インピーダンス 50オーム
耐入力:300W 同軸5DSFケーブル他5D系において
取付マストは、30~50㎜φで垂直偏波用
VSWR
周波数1280MHz~1300MHzにてVSWR 1.3以下
1295.5MHz付近では1.15以下
使用環境により変わりますので100%保証できるものではありません。
ご理解お願いいたします。

解体して160サイズゆうパックにてお送りします。
ノークレームノーリターンでお願いいたします。
Please log in before asking questions
Question list
All replies from original sellers (total number of questions: items)
After the seller responds, the original page will display the question
Product Price JPY
Japanese Consumption Tax(10%) JPY

A 10% consumption tax is applied to goods and services in Japan. The price may include the tax or it may be added separately. Please check the price details when ordering.

Note: This is a domestic sales tax applied within Japan.

Japan Local Shipping Fee JPY Japan Local Shipping Fee Reference
Product Weight KG The maximum weight limit is 30 kg
International Shipping Methods
Singapore Package Import: Customs and Tax Policies
Proxy bidding and purchasing services are becoming increasingly convenient. However, overseas shopping carries certain risks and issues. To reduce these risks and enhance shopping safety, please be sure to read the following information:

1. International Shipping

   Air Freight: If the item status is not confirmed within two days after the arrival notice, any customer complaints cannot be addressed with the seller.

2. After Receiving the Product

Please confirm and inspect the product as soon as possible to ensure that the product specifications, quantity, accessories, and description are correct

If, unfortunately, there are any issues, you can refer to the following examples on how to report related product problems:
1. Example of missing product information
2. Example of product not matching provided information
3. Example of damaged product information

Important Notes: 1. If the seller is unwilling to ship overseas or is unaware that the product will be shipped overseas, the international shipping cost for returns or exchanges will need to be borne by the member. You may refer to the EMS e-Express fee inquiry from the post office. If it involves alcoholic beverages or items that affect flight safety, the post office cannot be used for shipment, and only DHL can be used to ship back to Japan.
2. During the product complaint handling period, please retain the complete outer packaging of the product (including the shipping label information), and refrain from attempting any repairs or altering the original condition. Any modifications may result in the inability to process the case.

3. After Inspecting the Product

After receiving and inspecting the item, if you have any questions, it is recommended to contact Letao within 2 hours. Here are some reminders:

1. Please do not unpack, use or repair the received item yourself, and be sure to keep the original packaging to facilitate subsequent handling of related matters, so as to avoid changes to the item that may cause the seller to be unwilling to process.

2. You can call customer service, and the customer service will leave a message for you as below. Please provide the following information:
"Hello, we will first help you establish a complaint case for Product ID: _______ .But we need you to 2-3 clear photos of the product issue, including photos of the product problem, product packaging, shipping details slip, and outer box. Send them to service@letao-holdings.com and inform us of your desired resolution (failing to provide this may result in an inability to process subsequent matters). After sending the email, notify us in the customer service message. We will confirm with the seller as soon as possible. and if there are any related questions, we will contact you through the customer service message. Thank you for your cooperation."

Please provide:
1. "Product ID"
2. Photo of the "Delivery Note" (if any)
3. Photos of the outer box (including inner and outer packaging)
4. Photos of the product (Please include relevant descriptions to help us confirm with the seller)

Important Notes:
1. Do not include foreign text or other products in the background of the image.
2. Please keep the complete product packaging (including the shipping label information), and refrain from repairing or altering the original condition on your own, as any changes may result in the case being unable to be processed.
3. Please provide the relevant information within 48 hours to avoid missing the golden hour for reflection and causing situations that cannot be handled.
4. Due to 99% of Japanese sellers being unwilling or unaware of shipping goods overseas, if a seller is willing to handle the issue, the goods must be sent back to Japan, and the international shipping costs incurred must be borne by the member. Letao will use postal EMS international express to send the goods back to Japan.
5. As the goods are purchased from overseas, it may take approximately one to two weeks to complete the relevant processing procedures when issues arise with the goods. Please be reminded that you can inquire about the approximate cost through the EMS service at the post office.

4. FAQ

1. Issue of Authenticity: If antique or branded goods are found to be counterfeit upon receipt, clear photos showing the differences between the genuine product and the imitation must be provided as evidence. If unable to provide relevant proof, assistance can be sought to find a third-party reputable organization for a premium authentication service .
2. Leaking Iron Teapot: If an antique iron teapot is leaking, please take clear photos of the leaking area and provide them.
3. Transport Damage: If the goods are damaged during international shipping (to the pickup point), you need to provide photos of the outer packaging of the parcel and clear photos of the damaged goods' outer packaging.

※ Note: Photos provided to sellers should not contain any foreign-related information.
You may also like
    Seller products
    Excite Translate
    Add to watchlist and notes
    Product name: 1200MHz用 34エレメント パラレルループ八木 高性能アンテナ
    Notes:
    Customer service hours:
    • Monday to Friday 10:00-18:00
    Customer service hotline:
    Customer Service Email: service@letao-holdings.com