HF Antenna Tuner AT 4002
Typical 4002 installation
The 4002 is designed specifically for short vehicular whip antennas, and is a rapid, highly efficient, reliable tuner.
The 4002 is optimised to tune a 1.6m whip from 2.5-30MHz with a VSWR typically of 1.5:1 or better.
An optional 800mm riser enables operation from 2 to 30MHz.
The unique tuning algorithm provides a memory-tune location for all frequencies between 2-30MHz.
The memory tuning time of <130mS makes the 4002 the ideal tuner for networks using ALE and/or frequency hopping, with tun-ing times for new frequencies average less than 1 second.
The 4002 is extremely rugged, and meets MIL-STD 810F for
waterproofing (IP68), shock, vibration and dust ingress.
Available antenna bases are shown on Page 3.
![View 1 HF Antenna Tuner AT 4002]( "View 1 HF Antenna Tuner AT 4002")
![Figure 2 HF Antenna Tuner 4002]( "Figure 2 HF Antenna Tuner 4002")
![Figure 3 HF Antenna Tuner 4002]( "Figure 3 HF Antenna Tuner 4002")
Figure 3. Top view of tuner.The 4002 is optimised to tune a 1.6m whip from 2.5-30MHz with a VSWR typically of 1.5:1 or better.
An optional 800mm riser enables operation from 2 to 30MHz.
The unique tuning algorithm provides a memory-tune location for all frequencies between 2-30MHz.
The memory tuning time of <130mS makes the 4002 the ideal tuner for networks using ALE and/or frequency hopping, with tun-ing times for new frequencies average less than 1 second.
The 4002 is extremely rugged, and meets MIL-STD 810F for
waterproofing (IP68), shock, vibration and dust ingress.
Available antenna bases are shown on Page 3.
Figure 1. Connector end of tuner. From the left, the connectors are earth, RF and control.
Figure 2. HV end of tuner.
Fig 4. Flange mount base
.jpg "Single Hole Mount HF Antenna Tuner AT 4002")
Fig 5. Single hole mount base
.jpg "HF Antenna Tuner AT 4002 NATO Base")
Fig 6. NATO Base
The following plots are of VSWR measurements taken of the actual vehicle
installation shown on the front page, using a Codan NGT transceiver.
This is considered the optimum placement for an HF mobile antenna.
installation shown on the front page, using a Codan NGT transceiver.
This is considered the optimum placement for an HF mobile antenna.
Near Vertical Incidence Skywave (NVIS) operation has a general upper limit
of 15MHz, and the NVIS whip package is designed accordingly.
Ordering Information
of 15MHz, and the NVIS whip package is designed accordingly.
Specifications
Mechanical Electrical
| Frequency range | 1.6m whip: 2.5-30MHz 2.4m whip: 2-30MHz | |
| Power rating | 125W PEP | |
| Power consumption | Tuned | Typically 400mA |
| Tuning | <800mA | |
| Input Impedance | 50Ω | |
| VSWR | Typically 1.5:1 | |
| Tuning speed | New frequency | Average < 1 second |
| Memory tuning | <130mS | |
| Memory channels | Unlimited - unique non-linear memory allocation | |
| Efficiency | 15 to 95%, whip-length de-pendant |
| Temperature Rating | -40 to +80° C |
| DC operating range | 10 to 16VDC |
| Protection | Open circuit antenna Short circuit antenna Over temperature High VSWR Voltage transients |
| EMC | Compliant |
| Shock and vibration | MIL-STD-810F (Dust, vibra-tion, water ingress to IP68) Case pressure-equalisation device fitted |
| Dimensions | 300mm L x 250m W (including connectors) x 95mm H |
| Weight | 2.4kg |
| Control cable | Codan 3040/9350 |
| Connectors | RF: N socket Control: 6 pin bayonet (Mil-spec) |
| Case construction | Bespoke diecast aluminium alloy |
| Colour | White or military green |
Ordering Information
| 01-1004-001 | Flange mount base Standard package |
| 01-1006-001 | Single hole mount base Standard package |
| 01-1008-001 | NVIS option for Flange mount/Single hole Standard pack-ages |
| 01-1005-001 | Flange mount base Extended package |
| 01-1007-001 | Single hole mount base Extended package |
| 02-4018-001 | NVIS option for Flange mount/Single hole mount Ex-tended packages |
| 02-4016-001 | 1.55m fibreglass whip option for both Extended pack-ages, replacing the supplied stainless steel whip |
| 02-2174-001 | Side-mount bracket option for all packages |
| 46-1010-001 | N Plug to UHF Socket Adapter |
Standard packages include the 4002, base, spring, stainless steel whip, RF and control cables.
Extended packages add an 800mm riser to extend the lower frequency range.
Extended packages add an 800mm riser to extend the lower frequency range.