Very High IP3 LNA for 144 MHz

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Very High IP3 LNA for 144 MHz

Very High IP3 LNA for 144 MHz

After careful inspection of different designs that could be used as the front end amplifier of my new 144/14 MHz transverter design I finally stopped at the Infineon's BF998 MOS FET tetrode

post 10 Oct 2024

Preamplifiers Links →

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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

Ferrite-shop

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Amateur radio kits by Kanga US

Pcs Electronics

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160M 1/4 Wave Vertical 160m vertical antenna project. It is 100' of Rohn 25G and a 20' aluminum stinger. The base is made out of four 6' power line insulators sandwiched between two Rohn base plates. 7/8' stainless bolts hold the assembly together. 32 radials 50' long and 30 radials 100'

DHD Double Half Delta

DHD Double Half Delta This is a dhd double half delta in theory it should return a low signal but with a good s - n ratio roughly like a beverage

Visual CW Tuning Indicator

Visual CW Tuning Indicator Many transceivers set the CW transmit off-set equal to the set's sidetone frequency. But it was left to the operator how to match incoming signals to the sidetone for one-frequency QSOs an awkward and time-consuming procedure

Convert ADIF to Cabrillo Format

Convert ADIF to Cabrillo Format Have an ADIF file from amateur radio contesting, but the contest you want to enter wants a Cabrillo-formatted file? This is the tool that you need

trap-dipole-7-10-14-18-50-mhz

Trap Dipole 7, 10, 14, 18, 50 MHz Trap dipole 7-10-14-18-50mhz with balun coax cable

Diy Arduino CW keyer

Diy Arduino CW keyer I added code to read push-buttons on digital pins to trigger hard-coded messages like CQ and CQ SOTA