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Yahoo Bid Home Appliances, Audio & Video, Camera Electronic Components Printed Circuit Boards (PCB)
【お風呂場ラジオ用】二石・FMトランスミッター基板キット  
     

  • Product Quantity
    : 1
  • Starting Bid
    :1,380円
  • Highest Bidder
    : / Rating:
  • Listing Date
    :2025年07月19日 17時42分
  • Bidding closes on
    :2025年07月26日 21時42分
  • Auction Number
    :u1155557522
  • 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. The import of electronic parts requires relevant certificates, such as: IC, capacitors, transistors, power supplies... and other electronic related parts (such as motherboards, power transformers), and we cannot assist you in importing.
【お風呂場ラジオ用】二石・FMトランスミッター基板・キット

 最近ではラジオ放送もネットラジオが全盛で、1940年代、50年代、60年代、70年代、80年代といったぐあいに年代で区切ったり、クラシック、ジャズ、ポップ、ロック、フォークなどそれぞれのジャンルで区分けしたりと、さまざまな好みに合わせて楽しめます。懐メロはリスニング・ルームだけでなく、暖かいお風呂に浸かって温泉気分で楽しむのもまた一興なのですが、PCのブルートゥースでは湿度100%のお風呂場では減衰が大きくてダメでした。ここはやはりお風呂場ラジオの出番です。

このFMトランスミッター基板はそういう用途で設計したもので、簡単な回路ですが閉ざされた別室からのネットラジオ(PCの出力)を湿度100%空間のお風呂場ラジオまで届けます。想定電源は5-6V、電池がベストですがUSB電源でも動きます。完全デスクリートでコイルが自作のため周波数の設定もフリー。簡単に出来て、古い(1940年代・米国製)真空管式FMラジオ(受信周波数:42-50MHz)や各種アマ無線の受信機にも使える自由度が高いDIY基板です。試験機の動作概要は以下のとおり;

使用TR : 2SC1815-GR & 2N3904<BR>
使用電源 : DC 3-9V, <BR>
消費電流 : DC 約7mA(6V)
送信周波数 : 30pFトリマと0.7mm線の径7mm、4-5回巻で70-108MHz可変を確認
アンテナ : 30cmロッドアンテナ(アースは不要)
入力インピーダンス:10kΩ以上(ライン入力の場合)

上記設定で木造一戸建て1Fの作業場から2F、3Fの全室(お風呂場を含む)でクリア(モノですが)なネットラジオ受信が出来ました。以下、パソコンのSDR受信、FMバンド、87.15MHzが別階からの電波(AM1300kHzは別途出品のAMトランスミッタ)です。パソコン自体がノイズ源なのでSNは悪いのですが電波強度は一般放送波とほぼ同じ高さまで出ています。

ただし実験は写真の試験用シャーシに組み込んだ状態で、組込用部品一式はオプション、本セットは基板製作部品のみです。当方のID及び取引に関する詳細は以下を参照;
The product has been closed, and you cannot ask 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 Get Your Limited-Time International Shipping Discount Now!
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: 【お風呂場ラジオ用】二石・FMトランスミッター基板キット
    Notes:
    Customer service hours:
    • Monday to Friday 10:00-18:00
    Customer Service Email: service@letao.my