Stampfl X One

STAMPFL X One Active Dipol Antenna

Founded in 2005 by Heinz Stampfl (HB9KOC), STAMPFL HAM Electronics specializes in kits, Morse keys, and compact electronic components for radio enthusiasts. The company is known for its high‑quality products, thorough documentation, and excellent customer support

Key Facts

  • 10 kHz to 150 MHz
  • Selectable FM band stop
  • Excellent reception performance
  • Excellent common mode rejection
  • Small and mechanically robust solution
  • Horizontal or vertical setup
  • Perfect for mobile use
  • Professional quality, incl. schematic

Overview

X One Active Dipol

The X-One must be partially assembled on site, for this purpose the dipole elements with the end capacities must be attached to the housing.
Depending on the local situation,  signal blocking can be activated for the FM range 88-108 MHz.
The installation site should be a quiet HF location. The X One is mounted on a 40-60 mm mast (metal, fiberglass). A height of approx. 5 m and a distance of 4 m to the objects is recommended.
With horizontal orientation, a rotor can bring further improvements. Omnidirectional reception is possible with vertical orientation.
As the X-One is a symmetrical antenna, reception is independent of the ground.
The antenna is already equipped with a CMC, which reduces common mode interference.

Technical Data

Feature X ONE
Frequency range 90 kHz - 150 MHz (usable from 10 kHz)
FM Band Stop Internal Jumpers
Antenna Size 800 mm
IP3, Typ > +28 dBm
IP2, Typ > +66 dBm
Impedance 50 Ohm
Pole mount 40 - 60 mm
Common mode rejection typ. -30 dB (0.2-60 MHz)
Weight 0.9 kg
Power Supply 12-14 V, 270 mA
Connector N, Antenna Side
BNC, Bias-Tee
Operating temperature range 20 to +60 grd C