
TF908 Directional Antenna System
A portable signal location and measurement device for radio monitoring, signal detection, and EMC testing, etc.
Highlights

- Four directional antennas cover from 9kHz to 8000MHz, meeting the needs of full-band signal testing
- Built-in amplifier with a typical gain of 16dB, effectively improving signal reception sensitivity
- Accurate directional positioning : cardioid linear pattern, front-to-back ratio better than 6~16dB, combined with a three-dimensional electronic compass, real-time display of the signal source direction
- The antenna and handle are lightweight, with a total weight of only 7.5kg (including packaging), suitable for field and mobile operations
- The handle integrates a “start measurement” button, which supports one-button triggering and is easy to operate
- Support USB or aviation plug power supply, SMA output interface is compatible with most test equipment
- Includes F20/F225/F250/F580 Antenna and W3 Smart Handle



Specifications
| Antenna Model | Frequency Range | Gain | Standing Wave Ratio | Polarization | Output interface |
| F20 | 9kHz–20MHz | 16 dB | <2.5 | Horizontal/Vertical | SMA 50Ω |
| F225 | 20MHz–250MHz | 16 dB | <2.5 | Horizontal/Vertical | SMA 50Ω |
| F250 | 200MHz–500MHz | 16 dB | <2.5 | Horizontal/Vertical | SMA 50Ω |
| F580 | 500MHz–8000MHz | 16 dB | <2.5 | Horizontal/Vertical | SMA 50Ω |
| W3 Smart Handle (Universal Controller) | |
| Data interface | USB 2.0 / 9-pin aviation plug |
| RF output | SMA (male) |
| Power supply | USB 5V / aviation plug 5V |
| Positioning module | Three-dimensional electronic compass |
| Power consumption | 100 mA |
Application Scenarios
- Radio Management and Spectrum Monitoring
- Signal source positioning and tracking (such as drone interference sources, illegal radio stations)
- Educational Experiments and Scientific Research Measurement
- Emergency communications and security inspections
- EMC pre-compliance testing

FAQs
What logistics options do you offer?
We provide optimized logistics solutions based on the urgency of your order, size, weight, and your location:
International Express: Suitable for samples, urgent orders, and small shipments under 22 lb. We partner with top logistics providers such as DHL, FedEx, and UPS, offering door-to-door tracking.
Air Freight: Suitable for medium to large orders or time-sensitive complete equipment, offering an effective balance between cost and speed.
Ocean Freight: Suitable for large-volume orders and the most economical shipping method. We offer FOB, C&F, and CIF.
What’s the lead time?
For our standard products, if there are in stock and ready for shipment, the lead time is about 7-10 days. For our optional products, the lead time is about 25-30 days.
What is the product warranty period?
We are confident in the quality and reliability of our products.
We offer a standard 12-month warranty on all instruments, starting from the date of arrival at the port of destination.
Extended warranties are also available; please contact our sales team for details.