ANTENTOP- 01- 2008, # 010

Simple Weekend Antenna for 145-MHz

Igor Lavroushov, UA6HJQ,

May 2005.

Yes, I need an antenna for 144-MHz. Not just antenna, but antenna that can work in different conditions, from my home, from a car, from my mountain trip. Have been tried different design I suddenly stopped to those one. It is two element YAGI that is very simple to design but has good characteristics.

Photos below show the antenna installed on my balcony. The antenna is very sustainable to weather. Rain, wind and snow are no matter for this one.

Before the antenna I had used another ones (among them A-100 and A-200), but my design could sustain in the sever mountain conditions... I had compared the antenna with A-1000 (5-meters long), at distance 50 kms I got the same reports, as for A-1000 as for my YAGI. Two phased YAGI are defeated A-1000 for sure, you may prove in it.

UA6HJQ

Design of the antenna is very simple. Personally I have made the antenna in 40 minutes. Antenna consists from reflector (length 1002-millimeters) and vibrator (length 972- millimeters, gap for coaxial cable- 10-millimeters). Distance between reflector and vibrator is approximately 204- 210- millimeters.

Antennas parts are made from insulated wire in diameter 4 millimeters. Place of vibrator, where a coax was installed, was protected with a raw compound. You may use another protector...

SWR for the antenna (measured by SWR-121) was (1.0-1.1):1.

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