G8TTI's Scrapbook: How to make a HB9CV

How to make an HB9CV two element antenna for VHF

(or at least, how G8TTI made one!)

The HB9CV is a well known two element antenna of a directional beam type with a forward gain of 4 to 5 dBd.
This one is for two metres but it can be scaled, from the dimensions in the diagram, for other bands I have also made them for four and six metres.

Compensating capacitor

The gamma match and compensating capacitor.
Fed here at the reflector, this matched okay and was easy to use as I just used mine for DF work, the extended boom acting as a handle BUT REALLY THE ANTENNA SHOULD BE FEED AT THE DIRECTOR FOR BEST RESULTS. The capacitor will need weather proofing if the antenna is to be mounted outside.

Amateur Radio

Amateur radio, commonly called “ham radio”, is a hobby enjoyed by many people throughout the world; about 3 million worldwide, 70,000 in Germany, 60,000 in the UK, 5,000 in Norway, 57,000 in Canada, and 700,000 in the USA.
A holder of an Amateur Radio license has studied and passed required tests in his or her country and been issued a call sign by its government. This call sign is unique to the operator and is often a source of pride. The holder of a call sign uses it on the air to legally identify all voice and data communications.
Amateur Radio should not be confused with CB radio which is limited to voice operation, allowed lower power limits, fewer frequency allocations, and is unlicensed in most countries.

G8TTI's Scrapbook

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How to make a HB9CV

How to make an HB9CV two element antenna for VHF

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