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Duplexer bibanda 144-432 MHz
Questo duplexer autocostruibile in pochi minuti , permette di operare con due antenne 144-435 separate con un rtx bibanda, facilita le operazione per il traffico satellite
post 21 Jun 2024
Antenna Duplex duplexer Links →
2m/70cm Diplexer
The easiest way to set the filters up without a network analyser, is to connect a good 50 Ohm load to the antenna port and adjust the spacing between the turns of the coils to achieve a good VSWR
2m - 70cm diplexer
With this diplexer, you can connect a 2m (144-146 MHz) and 70cm (430-440 MHz) transmitter to a single dualband antenna, or a dualband transmitter to two seperate antennas
2m-70cm Duplexers-Diplexer
Onze 2 m band eindigt bij 146 MHz en de 70 cm band begint bij 430 MHz. Het midden ligt op 146 + 430 - 2 = 288 MHz
33 MHz diplexer
This is optional, but the diplexer should be mounted as close to the mixer's IF output as possible
1.3-400 / 150-460 MHz Duplexer Devresi Eklendi
50
The easiest way to set the filters up without a network analyser, is to connect a good 50 Ohm load to the antenna port and adjust the spacing between the turns of the coils to achieve a good VSWR
With this diplexer, you can connect a 2m (144-146 MHz) and 70cm (430-440 MHz) transmitter to a single dualband antenna, or a dualband transmitter to two seperate antennas
Onze 2 m band eindigt bij 146 MHz en de 70 cm band begint bij 430 MHz. Het midden ligt op 146 + 430 - 2 = 288 MHz
This is optional, but the diplexer should be mounted as close to the mixer's IF output as possible
PIC-Keyer This project describes the construction of a real "QRP" keyer with a small microcontroller PIC 16F84, with slightly modified hardware also PIC16F62