| Electrical | |
| Model | DFA 2/70-Z/… |
|---|---|
| Frequency | 160 MHz-band freq. to be stated within : 144…175 MHz 450 MHz-band freq. to be stated within : 380…470 MHz |
| Antenna Type | Dual-frequency mobile antenna |
| Max. Input Power | 30 W |
| Polarisation | Vertical |
| Impedance | 50 Ω |
| Gain | 160 MHz : Approx. 0 dB 450 MHz : Approx. 2 dB |
| Bandwidth | 160 MHz : ≥ 8 MHz @ VSWR ≤ 2.0 450 MHz : ≥ 15 MHz @ VSWR ≤ 2.0 |
| Mechanical | |
| Materials | Whip : Conical glass fiber Chromed brass Mount : Chromed brass Weather- and shockproof plastics Stainless steel |
|---|---|
| Installation Torque | 7.5 ±1 Nm |
| Colour | Black |
| Historic Brand | Amphenol Procom |
| Antenna Mount Type | Hole Mount |
| Height | Approx. 530 mm / 20.87 in. |
| Weight | Z-version : Approx. 160 g / 0.35 lb. ZP4-version : Approx. 310 g /0.68 lb. |
| Mounting | 21 mm / 0.83 in. dia. hole (For roof thickness 2 mm / 0.08 in. up to 7.5 mm / 0.30 in. mounting hole should be 22 mm dia.) |
| Mounting Plate Thickness | Max. 2.0 mm / 0.08 in. (Models up to 7.5 mm / 0.30 in. on request) |
| Model | Product No. | Additional Information |
|---|---|---|
|
DFA 2/70-Z/… |
130000689 | Z-mount with FME system |
|
DFA 2/70-ZP4/… |
130000691 | ZP4-mount with 4 m cable and FME connector |
The antenna is delivered factory-tuned to two single frequencies, one frequency in each band. These two frequencies (stated in MHz) must be specified when ordering as can be seen from the ordering examples below.
In case of duplex operation, only the Tx frequency should be stated.
To obtain a more discrete appearance, the antenna can be delivered with hat nut and keyinstead of the wing screw. For this version please add a “K” to the full antenna designation.
This antenna is supplied with type Z-mount. The whip is fastened to the mount by means of our standard ball-joint and wing screw system. The adjustable ball-joint ensures that the whip can always be mounted in a vertical position independent of the angle of the installation spot.
The Z-mount is particularly well suited for mounting on car-roofs because of it’s ability to be installed exclusively with access from the outside. The Z-Mount for roof thickness from 2 mm to 7.5 mm must be mounted from the inside.
However, the antenna can be installed anywhere on the car, as the Z-mount is equally well suited for mounting on e.g. trunk or wing.
Do not use sealer on rubber gasket or other places.
Several advantages are gained by using only one antenna. Only one single hole has to be drilled into the car body, only one cable installation has to be run, the car appearance is not destroyed by carrying several whips and also, it may be a particular demand that it should not be too obvious to see that the car is equipped with transceiving equipment.
In case of operating two transceivers on one antenna at the same time, a diplexer, type DIPX 225/330 is necessary to complete the system. (See the coupling diagram below). The tasks of the diplexer are to protect the two receiver inputs from being destroyed by the transmitter in the contrary band, and to ensure a low-loss path between the transceiver and the antenna, which is not loaded by the other branch. For further details please see the separate data sheet on the DIPX 225/330.
The diplexer fully covers both bands and, consequently, tuning to specific frequencies is not required.
