Comtek COM-30VA Podręcznik - Strona 7

Przeglądaj online lub pobierz pdf Podręcznik dla Antena Comtek COM-30VA. Comtek COM-30VA 8 stron. 30 meter vertical antenna

Tuning

Tuning the COM-30VA 30 Meter Vertical Antenna is straightforward and intuitive. If you use an

SWR meter or an analyzer at the base of the antenna you will get the most accurate readings in a

timely fashion.

Since the bandwidth of the antenna is wide the adjustment parameters are relatively broad and fine

adjustment is not usually necessary.

Note: For the purposes of these instructions the term "resonance" or "resonant frequency" is

defined as the point of lowest SWR and may be used interchangeably.

To adjust the low SWR point in the 30 meter band, merely adjust the length of the top tubing

section in the normal manner, i.e., making it longer lowers the 30 meter resonant frequency and

shortening it raises the frequency. The top element section is made moveable by loosening the

element clamp and then sliding the upper element section of the antenna either closer to the base of

the antenna or farther away depending on whether you want to lower or raise the frequency of

resonance. Be sure to tighten the clamp after making an antenna length adjustment.

The approximate lengths shown in this table should also be used when making resonant radials for

an elevated mount antenna (feedpoint is 3 feet or higher from ground level). For ground mounted

antennas, resonant radials are not required.

Thank you again for purchasing a Comtek Systems COM-30VA 30 Meter Vertical Antenna. .

73,

Comtek Systems

www.comteksystems.com

Frequency MHz

Approximate Overall Length

10.100

10.125

10.150

Enjoy your 30 Meter performance while DXing.

24 Feet 3/4 inches

24 Feet

23 Feet 11-1/4 inches

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