Product Description
OPEK HVT-400B - 8 Band High Performance HF VHF UHF Antenna
The OPEK HVT Series Mobile Antennas are constructed of a rigid fiberglass core. This core is helically wound with copper wire and it is tuned to various band "tap" points.
The OPEK HVT Antenna is a shortened HI Q design and therefore it has a narrow SWR bandwidth, particularly on 80 meters. When measuring SWR adjust the SWR meter slowly across the band... no more than 5 kilohertz at a time. Otherwise, you may miss the resonant spot.
The OPEK HVT Series Antennas are intended for mobile installations; however, it is often used as a fixed base station or portable antenna. Below you will find a few installation tips.
For back packing (QRP) the antenna disassembles in two section, the coil section which measures 18-inches long and the whip (stinger) which measures 36-inches long.
- OPEK: HVT-400B
- Frequency Range: 3.75 MHz (80M) - No Jumper
- Frequency Range: 7.15 MHz (40M) - Jump P1 to P2
- Frequency Range: 14.2 MHz (20M) - Jump P1 to P3
- Frequency Range: 21.2 MHz (15M) - Jump P1 to P4
- Frequency Range: 29.0 MHz (10M) - Jump P1 to P5
- Frequency Range: 52.0 MHz (6M) - Jump P1 to P6
- Frequency Range: 145.0 MHz (2M) - Jump P1 to P6
- Frequency Range: 435 MHz (70cM) - Jump P1 to P6
- Frequency Range: 118-136 MHz (Air Band) - Jump P1 to P6
- Polarization: Vertical
- Impedance: 50-Ohms
- Input Power: 120-Watts
- Connector: PL-259 (Requires SO-239 Mount and Cable)
- Max. Overall Length: 54-Inches | Coil: 18-Inches | Whip: 36-Inches
- Instructions: Page 1 Click Here Page 2 Click Here
Mobile Installation Tips
- Use OPEK AM-204-7LA or similar UHF (SO-239) mount.
- Mount the antenna as far above the vehicle's roof line as possible.
- A solid grounding connection MUST be achieved between your antenna mount and vehicle ground for proper operation and performance.
- DO NOT rely on the battery ground. The mount must be solidly connected to your vehicle's frame for proper operation and performance.
- VERIFY your ground by using an ohmmeter to check for continuity between ground and the antenna's mount after installation. Resistance should measure < 0.8 ohms.
- If necessary, remove paint or coatings to ensure proper continuity of ground connections.
- Although you can achieve a solid ground without the use of a braided grounding strap, it is highly recommend that you use a grounding strap.
- DO NOT mount next to vertical metal surfaces (i.e., vehicle's body, doors, trunks, etc.).
- Leave at least 15-inches of open air space between the antenna and adjacent vertical metal objects.
- Use low-loss 50-ohm coaxial cable with at least 95% shield. A stranded center conductor recommended.
- Do not use foam dielectric coax cable. It is prone to moisture absorption and may deform in hot environments.
- Route your coaxial cable as far as possible from the your vehicle's electrical systems to avoid interference.
- Tune your OPEK HVT Antenna according to the instructions provided with the antenna.
- Band tapping jumper should be either left hanging loose or wound counter-clockwise and evenly spaced along antenna.
Fixed Installation Tips
- For fixed installations, use OPEK AM-403-UHF stainless steel mounting bracket, or similar.
- Mount the antenna as far above your roof line as possible.
- A 20-foot counterpoise wire, or other suitable ground plane is REQUIRED for proper operation and performance. Keep counterpoise wire at least 2-feet over earth.
- A solid grounding connection MUST be achieved between your antenna mount and earth ground for proper operation and performance.
- VERIFY your ground by using an ohmmeter to check for continuity between ground and the antenna's mount after installation. Resistance should measure < 0.8 ohms.
- If necessary, remove paint or coatings to ensure proper continuity of ground connections.
- Although you can achieve a solid ground without the use of a braided grounding strap, it is highly recommend that you use a grounding strap.
- DO NOT mount next to vertical metal objects (i.e., metal siding, etc.).
- Leave at least 15-inches of open air space between the antenna and adjacent vertical metal objects.
- Use low-loss 50-ohm coaxial cable with at least 95% shield. A stranded center conductor recommended.
- Do not use foam dielectric coax cable. It is prone to moisture absorption and may deform in hot environments.
- Route your coaxial cable as far as possible from electrical systems to avoid interference.
- Tune your OPEK HVT Antenna according to the instructions provided with the antenna.
- Band tapping jumper should be either left hanging loose or wound counter-clockwise and evenly spaced along antenna.
Other Details
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Excellent
Excellent product, best price!!!
