RF Antenna Amplifier | Electronic Project Circuits

Posts Tagged ‘RF antenna amplifier’

Antenna tunning circuit for 27MHz CB band

The antenna tunning circuit can accommodate 1/2 wave length antennas or higher, for input resistances of 50 Ohms which make it suitable for CB (Citizen Band) transceivers. C1 is for fine tunning and C2 is just for tunning. Turning C3 with the help of C2 you can set the SWR to 1:1. The Coil L is made of 11 turns of insulated copper wire with diameter of 1mm.

Be the first to comment - What do you think? Posted by admin - December 3, 2008 at 10:46 am

Categories: RF-Radio Frequency Tags: 27MHz RF Amp, CB linear amplifier, RF antenna amplifier

Active Antenna for 10KHz to 100MHz by BF247

This active antenna schematic can be used to frequency range from 10 KHz to 100 MHz. The length of the Antenna can be between 0.5 to 1 meter long. The power consumption is 20-30mA.

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Be the first to comment - What do you think? Posted by admin - November 5, 2008 at 4:33 am

Categories: Power Amplifier, RF-Radio Frequency Tags: active antenna, RF antenna amplifier, RF booster

AM/FM/SW Active Antenna by MPF102

This circuit shows an active antenna that can be used for AM, FM, and shortwave (SW). On the shortwave band this active antenna is comparable to a 20 to 30 foot wire antenna. This circuit is designed to be used on receivers that use untuned wire antennas, such as inexpensive units and car radios….

Read More Source:http://web-ee.com/schematics/RF_circuits/am-fm-sw-active-antenna/
Thank you.

Source: “Popular Electronics” Magazine, Jul,89 issue. (C)Copyright Gernsback Publications,Inc., 1989 – Please read their disclaimers before implementing this circuit.