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Travel Antenna Details


Travel Antenna Details

This is a low cost homebrew two band travel antenna for 20 and 40 meters. It is based on the B&W Travel Antenna concept with a telescoping whip and a loading coil

post 02 Nov 2024


Antenna HF Portable Links

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ML-90 Vehicle Roof Rack Magnetic Loop Antenna
Highly efficient antenna, radiating 10dB to 14dB more than whip antennas. Equivalent to a 500 Watt transmitter with a whip antenna

Mobile on 136kHz
It's just under 3Mtrs long. It is mounted on the roof of the car on a cross member bolted to the luggage rails

Portable Vertical Antenna 20-30-40mt
The concept is to make the antenna self supporting and able to be broken down into small pieces for easy transport

Antenna Mounts
Thus the antenna should be attached in such a way to maximize what little ground plane a vehicle represents


23cm Yagi Antenna building

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

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

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