What is an active antenna?

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AMRAD Active Antenna Frequently Asked Questions (FAQ) Updated 21 August 2001 GENERAL The folks at QST gave me 5 pages for my article and I used 7 pages so I already ... - Read more

Eine aktive Antenne ist eine reine Empfangsantenne mit einer speziellen Anpassung zwischen Strahler und HF-Vorverstärker. - Read more

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What is an active antenna? resources

active antenna - electronics tutorials

In a much earlier tutorial on my old site I discussed Active Receiving Antennas at some length. I commenced by saying "An active antenna is sometimes used for ...

Active Antenna Systems AAS

Active Antennas. Antenna Distribution Devices and Systems Special Antennas. Customer Specific Solutions ...

What Is an Active Antenna? - wiseGEEK

... What Is an Active Antenna? wise GEEK clear ... Active antennas are able to counteract signal attenuation due to the close proximity of the components, ...

Active antenna - Wikipedia, the free encyclopedia

An active antenna is an antenna that contains active electronic components. This allows the construction of antennas of limited size and / or wide frequency range.

VHF Active Antenna - ElectroSchematics.com

A simple vhf active antenna using a single BFG65 transistor which is a low noise type. The telescopic antenna and the wide band rf amplifier combination is

Active Antenna AA-7 HF/VHF/UHF, 3-3000MHz, Antenna booster

Active Antenna AA-7 HF/VHF/UHF, 3-3000MHz By Fred Blechman "Lift those hard-to-hear signals out of the mud with this handy receiver accessory." If you have a ...

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Active Antenna - OLPC - One Laptop per Child

Description. The Active Antenna is still in development and not available for outside testing or deployments. It is a standalone version of the wireless mesh network ...

Antenna (radio) - Wikipedia, the free encyclopedia

The parabolic antenna consists of an active element at the focus of a parabolic reflector to reflect the waves into a plane wave. Like the horn it is used for high ...

Active Antenna - Antennas: Active - The DXZone: ham-radio ...

Active antenna projects ... Most Popular. Active receiving antennas - An active antenna is sometimes used for receiving purposes in instances where a normal antenna ...

Antennentechnik – Wikipedia

Eine Antenne ist eine technische Anordnung zur Abstrahlung und zum Empfang elektromagnetischer Wellen , oft zur drahtlosen Kommunikation. Als Sendeantenne wandelt sie ...

An active antenna : resource detail - The DXZone: ham ...

An active antenna Active antenna projects. Project for QRP operations by George Dobbs G3RJV

Active Antenna - Electronics DIY

USB IO Board USB IO Board is a tiny spectacular little development board / parallel port replacement featuring PIC18F2455/PIC18F2550 microcontroller.

Aviation GPS Active Vs. Passive Antenna | eHow

Aviation GPS antennas come in two varieties: active and passive. Depending on the length of the run of cable between your GPS and the antenna, one type of antenna may ...

Palstar AA30 Active Antenna - Palstar - The Science of Ham ...

Model #: 9000000. The Palstar AA30 Active Antenna is designed for the avid SWL who is unable to put up an outdoor antenna. Utilizing the built in whip antenna or an ...

The pa0rdt-Mini-Whip ©, an active receiving antenna for ...

3 Measurement on active antennas. Once I was on the radio flea market in Rosmalen and I bought a selective voltmeter for a reasonable price. With it some parameters ...

Z1501 Active Antenna - Clifton Laboratories

Item: Price: Comment: Z1501D Active Antenna kit: $169.95: Kit includes printed circuit board and all electronic components, weatherproof enclosure with coaxial ...

Vorgeschichte

Ich bin seit fast 40 Jahren Kurzwellenhörer und habe in dieser Zeit mit sehr vielen Empfangsantennen experimentiert. Auf dem Gebiet der aktiven Antennen habe ich ...

Active Antenna With Icom R75? - narkive

Are there any INDOOR active antennas that would work well with an Icom R75? I'm only interested in medium wave and shortwave. What kind of performance can I expect ...

ADA, an active differential antenna - RADIO WAVES below 22 kHz

DESIGN OF THE ANTENNA AND OF THE ACTIVE PART. A short monopole (l < 0.1WL) has an effective height (H) approximately equal to its length (L).

What is antenna? - Definition from WhatIs.com

An antenna is a specialized transducer that converts radiofrequency RF ... The dish consists of a paraboloidal or spherical reflector with an active element at ...

Cross Country Wireless HF Active Antenna

The HF Active Antenna was developed as part of the development work for the Sentinel HF SDR noise measurement receiver and program.

comparison active magnetic loop antennas 0v1 - Homepage DD1US

Comparison of active magnetic loop antennas ... Therefore I decided to look for an active magnetic loop antenna and started to gather data and compare them.

VK5VKA's Active, Passive and Loop type Receiving Antennas.

ANTENNA NEWS. The latest and current models of HF (Shortwave) VHF, UHF and SHF Active, Loop and Passive Receiving Antennas!

active antenna -gps

Preview Product Name Price Details Kaito KA33 Amplified Active Loop AM and Shortwave Antenna: ListPrice: $60.00 LowestNewPrice: $34.95

PA0RDT Mini Whip - DL1DBC

Contents. The PA0RDT Mini Whip. How Active Antennas Work. How the PA0RDT Mini Whip Works. The PA0RDT Mini Whip. This is a picture of the PA0RDT mini whip, an active ...

ACTIVE ANTENNA AMPLIFIER - LTH

ACTIVE ANTENNA AMPLIFIER 2009 2 CHARLES & KAJA NAJUMUDEEN , LTH, LUND UNIVERSITY, SWEDEN CONTENTS 1. Introduction 03 2. Antenna Section 04

Active GPS Antenna ANT-NXM3601 - Round Solutions GmbH & Co. KG

Active GPS antenna including 5000 mm RG 174 cable and magnetic mount. Search. Home; Design Services; Products. Antennas. Embedded. Embedded EVK; GSM/UMTS; GSM/UMTS ...

Dressler ARA-2000 active antenna – what’s inside ?

1/7 Dressler ARA-2000 active antenna – what’s inside ? Matthias Bopp Updated October 23 rd 2011 Dressler active antennas have an excellent reputation and thus I ...

Active Antenna 2005 - QRP Homebuilder

Many builders emailed me requesting a simple, broadband VPA (voltage probe antenna) design with more power gain than the common gate versions I have presented ...

An active DCF77 antenna - You are about to enter www.vaxman.de

The circuit diagram on the right shows the complete active antenna: Input is via the tuned circuit consisting of the coil wound on the small ferrite rod and the two ...

Aktive Antenne :: active antenna :: ITWissen.info

Aktive Antennen zeichnen sich durch einen hohen Antennengewinn aus, sie können breitbandiger ausgelegt werden und so mehrere Frequenzbänder abdecken.

Home [www.activeloop.de]

Aktive Breitband-Loopantenne. Active Wideband Loop Antenna. Technische Fragen können im Forum www.dx-unlimited.eu gestellt werden. Dort sind die Entwickler der HDLA ...