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Swl active hula hoop square loop rx antenna
Progetto di un'antenna a loop attiva di JohnHawes G8CQX con alcune variazioni
post 03 Jun 2026
Preamplifiers Links →
Extreme Low Noise Preamplifier
Originally I looked for a very low noise balanced preamplifier for dynamic microphones, but with a gain of 20 dB only
How to Get the Most from Attenuators and Preamps
Most amateur transceivers include a preamp and/or attenuator, accessed either by switches on the front panel or via the radio's software menu
High Performance Tunable LF-HF Preamp
This is a further progression in the application of the J310 JFET in high performance preamplifiers
Low noise relais schwitched 2meter mast mounted preamplifier, DL5DBM
Low noise relais schwitched 2meter mast mounted preamplifier
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Originally I looked for a very low noise balanced preamplifier for dynamic microphones, but with a gain of 20 dB only
Most amateur transceivers include a preamp and/or attenuator, accessed either by switches on the front panel or via the radio's software menu
This is a further progression in the application of the J310 JFET in high performance preamplifiers
Low noise relais schwitched 2meter mast mounted preamplifier
Microsat Ham radio shop for ulari project, aprs, aprs with radio, bluetooth, gps, gsm, ham radio interfaces, weather,accessories, cables to radio
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