Typical VSWR curve
HX 4/…-FME
Helical Antenna with Universal FME-Connection System for Portable Equipment in the 4 m Band
Description
- Flexible, conical steel helix moulded in thermoplastic rubber.
- Significant reduction of length due to the helical principle.
- Optimum performance compared to physical dimensions.
- Delivered factory tuned and tested to ensure minimum VSWR.
- Provided with universal FME-connection system for optimum flexibility and easily exchangeable connectors.
- Designed for use with the following of Procom’s line of black FME-connectors (to be ordered separately): BFME-UHF, BFME-BNC, BFME-TNC and BFME-N.
Specification
| Electrical | |
| Model | HX 4/…-FME |
|---|---|
| Frequency | 4 m band covered by three models |
| Antenna Type | Shortened ¼ λ antenna for portable equipment |
| Max. Input Power | 50 W |
| Polarisation | Vertical |
| Impedance | 50 Ω |
| VSWR | < 2.0:1 @ fc when mounted directly on portable equipment |
| Bandwidth | ≥ 16 MHz @ VSWR ≤ 3.0:1 |
| Mechanical | |
| Connection(s) | FME(f) (Exchangeable BFME-connectors to be ordered separately) |
|---|---|
| Materials | Steel helix moulded in thermoplastic rubber Black-chromed brass |
| Colour | Black |
| Historic Brand | Amphenol Procom |
| Height | Approx. 290 mm / 11.42 in. |
| Weight | Approx. 0.08 kg / 0.18 lb. |
Ordering Codes
| Model | Product No. | Frequency |
|---|---|---|
|
HX 4/l-FME(f) |
140000067 | 66 – 76 MHz |
|
HX 4/m-FME(f) |
140000072 | 72 – 82 MHz |
|
HX 4/h-FME(f) |
140000064 | 78 – 88 MHz |
Additional Information
Recommended BFME-Connectors
(To be ordered separately)
Please Note
The HX 4 is also available with different thread studs, but in this case with fixed, non-exchangeable connector (not FME-connection system). Information on these special versions on request.
PROCOM A/S reserves the right to
amend specifications without prior notice
PROCOM A/S • Smedetoften 12
DK 3600 Frederikssund • Denmark
Generated : 2026-06-26
Version 1