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Automatic Tuner Project
I have been accumulating parts from ham swap meets for several years for a medium power antenna tuner. The tuner is a high pass T-network tuner
post 28 Jan 2024
Antenna Transmatch tuner Links →
Antenna tuner long-fil de 7 a 30 MHz
It is a simple L coupler that can be of great service for fixed or mobile traffic.
Antenna tuner multi-type matching system
The above antenna tuner is a multi-type matching system in the same box, which includes L - Pi and T networks. For example, If you can't matching a random antenna with PI-type tuner, just turn the S1 switch in other position, ie T-type and try again. With L - PI - T one-box antenna tuner , we have a very wide matching system for any kind of antenna
Antenna tuner T 3,5 a 30 MHz
This small coupler has a very classic T-pattern and uses an intermediate tap-type choke which allows tuning on all HF bands from 80m to 10m.
Antenna Tuning Unit ATU using the T-Network approch
A roller inductor with 25 or more turns of 1.2 mm diawire (No 17 AWG) on a 50 mm former would be nice for the 100 Watt level and would easily cover 160m through 10m operation
Icom tunner AH4 portable operation
Icom tunner AH4 with installation of the same for stationary or portable operation, making it easier to use
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It is a simple L coupler that can be of great service for fixed or mobile traffic.
The above antenna tuner is a multi-type matching system in the same box, which includes L - Pi and T networks. For example, If you can't matching a random antenna with PI-type tuner, just turn the S1 switch in other position, ie T-type and try again. With L - PI - T one-box antenna tuner , we have a very wide matching system for any kind of antenna
This small coupler has a very classic T-pattern and uses an intermediate tap-type choke which allows tuning on all HF bands from 80m to 10m.
A roller inductor with 25 or more turns of 1.2 mm diawire (No 17 AWG) on a 50 mm former would be nice for the 100 Watt level and would easily cover 160m through 10m operation
Icom tunner AH4 with installation of the same for stationary or portable operation, making it easier to use
23cm Yagi Antenna building Finished antenna at 1275 MHz SWR under 1:1.5 at resonant frequency
50 MHz preamp Gain 26dB with the BFG135 Preamps for 144 and 430 MHz, for 50 MHz, the BFG135a is a cheap transistor and in my view rather strong. It is not easily damaged by static discharge or RF power. FG connection
Interface-for-digital-broadcasts-with-integrated-audio 4-port HUB, with a TUSB2046. With port 1 of the HUB we drive the FT232RL; with port 2 the PCM2904, furthermore, we decided to leave ports 3 and 4 free