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VHF / TRANSIT ANTENNAS
The COMPROD line of VHF transit antennas is a low-profile rugged alternative to quarter wave whips. When mounted on a horizontal surface, maximum radiation is omnidirectional and vertically polarized.
These antennas are an excellent choice for low clearance applications such as those found on trains, public transit vehicles, construction equipment and police vehicles.
The model 357-75 is a folded-quarter wavelength section of aluminum tube housed in an impact-resistant ABS radome. To ensure a moisture proof installation, the model 357-75 is supplied with a mounting gasket.
The model 358-75 is a high-strength cast-aluminum design. The antenna can be coated for additional protection against harsh environmental conditions. To ensure a moisture-proof installation, the model 358-75 is supplied with an O-ring. |
357-75
358-75 |
| 138-174 MHz | ||
| VHF / TRANSIT ANTENNAS | ||
| Electrical Specifications | 357-75 | 358-75 |
| Nominal Gain | Unity | Unity |
| Maximum Power, Watts | 150 | 150 |
| Frequency Range, MHz | 148-174 | 138-174 |
| Bandwidth VSWR: 1.5:1 | 3,0 | 3,0 |
| Bandwidth VSWR: 2.0:1 | 4,5 | 4,5 |
| Nominal Impedance, Ohms | 50 | 50 |
| Radiation Pattern | Omni | Omni |
| Polarization | Vertical | Vertical |
| Radome Material | High Impact ABS | --- |
| Connector | UHF Female | UHF Female |
| Height, in (mm) | 4 (102) | 4 (102) |
| Length, in (mm) | 21 (533) | 23-1/2 (597) |
| Width, in (mm) | 3 (76) | 2-1/8 (54) |
| Weight, lbs (kg) | 2.1 (0.945) | 6 (2.7) |
| Minimum Ground Plane Size, in (mm) | 36x48 (914x1219) | 36x48 (914x1219) |
| Ordering information: | - Specify exact frequency. | |
| - Specify connector type, UHF or N Female. | ||
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357-75 |
358-75 |
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