Specification

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Technical Data Sheet: Antennas Direct C5 Antenna

Physical Data:

Dimensions: Length = 29 in. Width = 23 in. Height = 11.5 in.

Weight: 7.75 lbs.

Turning Radius: 18 in.

Electrical Data:

Band: High VHF 174 to 216 MHz Channels 7 - 13

Impedance: 75 ohm

Connector: F-Female

Performance Data:

VHF:

Peak Gain: 7.63 dBi @ 190 MHz MHz

VSWR: < 2.0 Typical

3.0 Max 174 to 216 MHz

UHF:

Peak Gain: 4.9 dBi

Notes:

1. Unless stated otherwise, all performance data computed using Remcom, Inc. X-FDTD 7.0 simulator.

2. Assumptions: PEC, free space, no balun. 300 Ohm transmission line reference.

3. Gain is specified dBi (isotropic) per IEEE definition. Balun and mismatch losses not included.

4. There are two common meanings for Front-to-Back Ratio (F/B). One specifies ratio as measured 180 degrees opposite boresight. The other, used by IEEE

specifies the ratio of boresight gain to maximum gain in rear hemisphere. The IEEE definition is the most conservative. IEEE F/B values shown here are computed based

on azimuth and elevation cuts provided in this document.

Illustration 1: C5

Summary of content (8 pages)

PAGE 1
Technical Data Sheet: Antennas Direct C5 Antenna Physical Data: Dimensions: Length = 29 in. Weight: Turning Radius: Electrical Data: Band: Impedance: Connector: Height = 11.5 in. 7.75 lbs. 18 in. High VHF 75 ohm F-Female Performance Data: VHF: Peak Gain: 7.63 dBi VSWR: < 2.0 3.0 Max UHF: Peak Gain: Width = 23 in. 174 to 216 MHz @ 190 MHz MHz Typical 174 to 216 MHz Channels 7 - 13 Illustration 1: C5 4.9 dBi Notes: 1. Unless stated otherwise, all performance data computed using Remcom, Inc.
PAGE 2
Illustration 2: C5 - High VHF Total Gain versus Azimuth Angle. Copyright (c) Antennas Direct, Inc., 2010.
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Illustration 3: C5 High VHF Horizontal Gain versus Azimuth Angle. Note: Side lobes lower than total gain of previous Copyright plot. (c) Antennas Direct, Inc., 2010.
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Illustration 4: C5 - Boresight Total Gain versus Frequency. Copyright (c) Antennas Direct, Inc., 2010.
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Illustration 5: C5 – Computed VSWR versus Frequency. Balun neglected. Assume 300 ohm line impedance. Copyright (c) Antennas Direct, Inc., 2010.
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C5 11 10 9 8 7 dB 6 5 4 3 2 1 164 166 168 170 172 174 176 178 180 182 184 186 188 190 192 194 196 198 200 202 204 206 208 210 212 214 216 218 220 Freq (MHz) Illustration 6: C5 - VSWR versus Frequency measured using HP/Agilent 8510C VNA with antenna 10 ft above dry concrete. Copyright (c) Antennas Direct, Inc., 2010.
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Illustration 7: C5 - Computed UHF VSWR versus Frequency. This is out of band response for this antenna. Copyright (c) Antennas Direct, Inc., 2010.
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Illustration 8: C5 - UHF gain versus azimuth. Out of band response. Copyright (c) Antennas Direct, Inc., 2010.