VHF/UHF Wideband Portable Dipole


Posted on May 16, 2012

I wanted a robust, portable, compact antenna usable for horizontal and vertical polarisation to take along with my FT-817 when I go on vacation, camping etc. I also wanted the dipole to cover the VHF and UHF bands and if possible with some gain! As everybody knows a dipole has about 3dB gain over a quartre wave antenna, is why my preference went to a simple dipole. To make it portable I used two identical telescopic antennas of 80 cm slid out and only 14 cm when pushed in.


VHF/UHF Wideband Portable Dipole
Click here to download the full size of the above Circuit.

What you need to make this handy portable wide band dipole is: * Two chrome-plated telescopic antenna`s (14cm/80cm) * A robust PVC box of 75x50x22 mm and 1,5mm thick * a silver plated stereo mini switch




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

AC Lamp dimmer
Phase sequence detector
Gas-smoke-detector
555 timer Electronic roulette wheel circuit and explanation
VU Meter using LM3915
simple mic pre-amp based LM358
Understanding circuit diagram on datasheet and resistor value
galaxi digicolor 26 chassis ittsel
Voltmeter with LED for car battery PCB
lm 3915 vu meter
Light that screen!
16 Step Analog Sequencer circuit
555 monostable trigger timing circuit
2SC2922 and 2SA1216 or 2SC3264 and 2SA1295 power amplifier circuit
High-pressure centralized compensation capacitor circuit



Top