Teseq VBA 6106A Biconical Antenna 30 MHz - 300 MHz

The lightweight antenna Teseq VBA 6106A offers a compact solution to measurements in the frequency range
30 to 300 MHz. It is ideal for open site measurements or applications in anechoic chambers where space
is at a premium. The VBA 6106A has a coaxial wound balun and can be used to transmit signals. The
maximum continuous input power is 10 Watts.

Above approximately 70 MHz the antenna factor is similar to that of a tuned half wave dipole but allows
measurements to be made without the need to adjust the antenna at each frequency. Below 70 MHz
the antenna factor is higher than that of a tuned half wave dipole but is adequate for many purposes
and is much smaller.

At frequencies near 30 MHz, the adjustable half wave dipole elements ‘droop’, and may overhang the
ground plane of an open air test site, when horizontally polarized.

Both these effects can cause significant errors and measurement repeatability problems. The smaller,
rigid construction of the Teseq VBA 6106A overcomes these problems. Biconical antennas are preferred in the
range 30 MHz to 250 MHz by CISPR 16-1-4 in order to achieve a low measurement uncertainty.

Features & Specifications of Teseq VBA 6106A:

• Frequency range: 30 MHz to 300 MHz
• Impedance (nominal): 50 Ω
• Maximum continuous power: 10 W
• Connector: N type female
• Size antenna (L x H x W in mm): approx. 1360 X 770 X 515 (see drawing)
• Weight: approx. 1.3 kg
• Size of cardboard box: 73 cm x 61 cm x 61 cm
• Shipping weight: approx. 6 kg
• Recommended tripod: BTP 6020A