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Yahoo Bid Hobbies & Crafts Wireless Devices Antennas
★超高感度 強固な作り 長寿命 広帯域 1200MHz用 27エレメント2パラレル2段 ループ八木アンテナ★自作
 
        

  • Product Quantity
    : 1
  • Starting Bid
    :138,888円
  • Highest Bidder
    : / Rating:
  • Listing Date
    :2026年01月03日 22時23分
  • Bidding closes on
    :2026年01月08日 21時23分
  • Auction Number
    :g1127241486
  • Condition
    :New product
  • Automatic Extension
    :No
  • 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.
 


超高感度 強固な作り 長寿命 広帯域

1200MHz用 27エレメント 2パラレル2段 ループ八木アンテナのさらにパラレル仕様ご希望の方質問欄からご連絡お願いします。

画像は2分配器を3個使用したものですが発送するアンテナは4分配器に変更しています。

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RS51~52まで上がります。
数多くの実験での結果です!!


周波数帯域の広い1200MHz帯バンドに対応(1260~1300MHz)VSWR 1.6以下 1290~1300MHzではVSWR 1.2以下


各エレメントは幅広で厚みのあるアルミナ加工アルミニウム平板を使用。

繋ぎ目は皿ビス2か所でしっかりブームに固定しました。強力な接着剤との併用と防水塗装とで高周波的にも経年劣化しません。

形状は画像をご覧ください。

ラジエーターは 純銅製の幅10㎜平板製、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1.5㎜の15㎜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。

サブブームは20㎜角のアルミニウムパイプで作りました。
マスト取り付け部分は25㎜幅角パイプで仕上げ。 仰角調整できるマスト取り付け部分を5㎜厚の8角形のアルミニウム板で作りました。
U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!

ブーム長は各約2m
アンテナ利得:推定利得 約23dbd(1/2波長ダイポール比) 約25dbi
アンテナサイズ:全長約2.0m 全幅 約90㎝×約12㎝(支持部品を除く)上下2段・間隔は約1m
回転半径 約180㎝
4分配器接栓は5カ所ともNJ
給電インピーダンス 50オーム
耐入力:200W 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1260MHz~1300MHzにてVSWR 1.5以下1295MHzMHz付近では1.2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170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。
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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
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.my 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.
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    Product name: ★超高感度 強固な作り 長寿命 広帯域 1200MHz用 27エレメント2パラレル2段 ループ八木アンテナ★自作
    Notes:
    Customer service hours:
    • Monday to Friday 10:00-18:00
    Customer service hotline:
    Customer Service Email: service@letao.my