チェコBTV社製 マグネティックループアンテナ

MLA-M V.5: 3.5M~28MHz帯用マグネティックループアンテナ

MLA-Mはループの直径が60cm、耐入力10WのQRP用マグネティックループアンテナです。下部ボックスにチューニング回路が収められており、ボックス上部には周波数帯を選択するためのジャンパが2つあります。一つは3.5MHz帯用で、もう一つは14M~28MHz帯用です。ジャンパを用いないときは7M、10MHz帯用となります(なお、60mバンドにも対応可)。.

なお、このアンテナは完全な防水構造ではありませんのでご注意ください。コネクタはM型、アンテナ全体の重さは約2.5Kgです。チューニングボックスの裏にゴム足がついています。

完成品とキットの2つのバージョンをご用意しております。

MLA-M
MLA-M
MLA-M
MLA-M packaged MLA-M 梱包パッケージ

日本のお客様へ

本品をご希望のお客様にはキット(製品番号:11435.kit)のご購入をおすすめします。完成品は日本までの送料が非現実的な金額になってしまいます。キットは通常の国際小包でお届け可能です。組み立ては簡単です。

Order No.
11435 MLA-M マグネティックループアンテナ 完成品 349.00 € Buy now In stock, shipped in 1 or two days.
11435.KIT MLA-M マグネティックループアンテナ キット 335.00 € Buy now Not in stock, back on: 11. Okt. 2017
送料について


利用者からのメール:


Hallo Olda,

I examined it again and really I can only congratulate.
With a completely invisible antenna in the room can normally work on 80m.
Tuning can be quickly drilled. Now I did on the first call and the EM7 G3 for 579 and 599
After my CQ also responded skimmers . All QSOs and test for skimmers was WKD on the my out 50W.
I think, min. 3 db reserve to LP 100 W. So what can I say, good luck in JA and elsewhere.
Super, my congratulation!!!

Jirka - OK2RZ

スタンド取付用プレート

11436

MLA-Mを三脚に取り付けるためのプレートです。チューニングボックスの底面にネジ留めします。

Order No.
11436 三脚取付用プレート 9.90 € Buy now In stock, shipped in 1 or two days.
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MLA-T: portable magnetic loop antenna 160-40m(日本語準備中)

MLA-T Loop 160-40m

The MLA-T is a magnetic portable antenna for 160m, 80m and 40m.
In contrast to the MLA-M this antenna has remote tuning. The antenna box contains a motor which is driven by a small control unit next to the radio. So, the antenna may be placed anywhere, depending on length of coax only.

MLA-T can handle up to 100W. However, within a distance of 5m to humans, no more than 10 W should be used.

Remote tuning makes use of the existing coaxial cable, so no extra cable is required.
Controller has 3 LEDs for simple and easy tuning. In addition, motor speed increases over time to ensure accurate tuning.

The antenna has an N-jack. Controller hat 2 PL-connectors. A patch cable of 1.5m length between controller and TRX is included, as well as a power supply (12V / 0.8A). The size of the antenna is 82 x 105 x 22cm, weight is 12kgs. The four loops have a diameter of 80cm.
Cable between antenna and controller is not included. Any 50 Ohm Coax is suitable, required is a PL-connector (controller side) and an N-connector (antenna side).

Order No.
11437 MLA-T mag. portable antenna 160-40m 855.00 € Buy now In stock, shipped in 1 or two days.
送料について

OK2ER からのメール

QSL card shows my OK/OM DX Contest antenna farm. :-D In the OK/OM DX contest I made 658 QSOs. My original idea was to use only magnetic antennas. But there was an EMC problem with 100 W input power into indoor loops. Both my internet modem and my TV receiver had been affected, a problem when you are married! Therefore the original idea to use MLAs only was abandoned and I finished the contest with other wire antennas. Only 250 QSOs were made with MLAs, if only MLAs were used all the time, I estimate I would have made ~400 QSOs. The result is still good considering that I used mostly indoor antennas. After the contest I used my mini-antenna, MLA-6 CB, and on 28 MHz band I made two nice DX stations by the first call, E2/CX1E and LU7YS. Those magnetic loops are just wonderful! 73 Olda - OK2ER

テキストブック 'Magnetic Loop Antennas' (英語)

The monograph, "Magnetic Loop Antenna, A Bit Different Every Time", is an unique study that in technical literature has no similar works to compare.  One of the authors, Marek Dvorský, is an Assistant Professor at Ostrava Technical University, while the other, Oldrich Burger- OK2ER, is an owner of a company developing and manufacturing the Magnetic Loop Antennas, BTV. The response of readers to the original Czech version issued in spring of 2015 has shown that  the form and content of the book is worth of publishing an English version. This would bring the work to a wider radio-amateur community than the language of both authors could. The book structure presents theory as well as practical designs on 187 pages, and  offers the text and many illustrations to describe five years of work during where BTV company has created several commercially successful MLA versions. Their detailed descriptions are included. The presentation of the English MLA book version at the International Radio Amateur Fair, Friedrichshafen, Germany, in June 2015, was a nice period to authors' publication activities on this special field of short-wave antennas.

内容見本 (PDF )

Order No.
35010 "Magnetic Loop Antenna, A Bit Different Every Time" by Marek Dvorský & Oldrich Burger 24.50 € Buy now In stock, shipped in 1 or two days.
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