Saturday, April 10, 2010

Balcony whip for windy days


Fishing rod is popular choice for QRV from balcony and anywhere. But the weakness against strong wind is not avoidable. The rod easily bend and dancing wire get caught by other structure. The rod often retracted by wind shaking. For such unexpected Japanese weather, a whip antenna is another choice. A mobile whip mounted to top of aluminum retractable pole is less efficient than long wires. But sustainable under strong wind. The Comet HR-series is the longest mobile whip with center loading. These are extremely strudy. Using 1/4 lambda ground wire, SWR of the whip is less than 2.5 at 7MHz width of 40kHz. You think Buddipole or MP-1 will be another choice. But I don't recommend such expensive fragile antenna to expose bad weather long time. Price of HR-series is less than 7,000JPY.