This is the ticket for boosting power up to a 1/2 watt over a frequency range of 100 KHz to over 1000 MHz! Although intended for use as a lab amplifier, many users in foreign countries use the LPA1C to boost their Ramsey FM stereo transmitters to a watt of power, capable of providing radio [...]
A radio frequency amplifier to boost SW reception. Frequency range approximately 5 to 20 MHz.
The problem with amplifying weak radio signals is that you also amplify the noise. What you can receive depends on how much background noise is present, whether it be man made interference or static. In this design the RF signal is [...]
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….
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