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電波で飛ばす。短波帯AMトランスミッター基板 (S042P式 ) 。dbm am変調。 スマホ音源で真空管ラジオに飛ばす。RK-35.。
 
        

変調波形。

基板単体の出品です。

実装時の参考に

osc波形

3.5MHz帯で確認。

実装時の参考に

実装時の参考に

水晶振動子も一応乗ります。

  • Product Quantity
    : 1
  • Starting Bid
    :850円
  • Highest Bidder
    : / Rating:
  • Listing Date
    :May 29, 2026 19:50
  • Bidding closes on
    :Jun 03, 2026 21:50
  • Auction Number
    :m1231693717
  • 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-related products have commodity inspection issues. If you confirm that the product is for personal use, you can place a bid to purchase it.



短波帯 AMトランスミッター(ワイヤレスマイク)基板。S042PでAM変調。 自作にどうぞ。

商品説明
小型のワイヤレスマイク(トランスミッター)基板を興しましたので出品します。

基板単体での出品です。
半導体,CR等の実装部品はご用意願います。
S042Pは50MHzでもoscしますし、200MHzまでのmixerです。
特徴
①DBMによる深い変調
②変調モード :2種類。
 ・AM 変調  :アンバランス抵抗有
 ・DSB変調  :アンバランス抵抗無

③MICゲイン
 ・1.2mV入力時に MIC-VR 最大では過変調になります。(100%変調の目安 :スマホ VR センター、 MIC- VR5部)

◇測定器を持たない方むけの基板ですが、飛ぶ周波数の合わせは必要です。
◇スマホを音源として真空管ラジオに飛ばすことを想定しています。(発振コイルはFCZタイプ)
◇飛び過ぎにはくれぐれもご注意願います。 回路図の抵抗値で概ね1.9m。

注意事項
定形外にて発送。

お支払方法
yahooかんたん決済。

その他
・回路図と部品配置図は付属します。
・「NE612式トランスミッターの短波版」になります。
・S042Pはyahooにありました。
・コイルはFCZ(サトー電気)です。他の部品は秋月で揃います。
・お手持ちの部品を生かしてください。
・写真のように部品点数は多くありませんので休日の午後の工作むきです。飛びすぎにはご注意ください。
・6石トランジスタラジオキットの次のステップにどうぞ。
・「短波ラジオ向けワイヤレスマイク。S042P」で検索してみてください。
法人入札、代理入札には対応できません。
・転売ヤーはご遠慮ください。

RADIO KITS IN JA


* * * 商品紹介は、かわいいテンプレートが豊富な いめーじあっぷで作成しました(無料)。 * * *

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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: 電波で飛ばす。短波帯AMトランスミッター基板 (S042P式 ) 。dbm am変調。 スマホ音源で真空管ラジオに飛ばす。RK-35.。
    Notes:
    Customer service hours:
    • Monday to Friday 10:00-18:00
    Customer service hotline:
    Customer Service Email: service@letao.my