Cross Country Wireless End Fed Antenna Matching Units
Cross Country Wireless produce a range of HF antenna matching units for end fed half wave (EFHW) antennas for portable and fixed station use.
The single band units use a bandpass filter arrangement to allow multi transmitter operation from the same location while providing excellent rejection of local medium wave transmitters.
Two wideband EFHW matching units are available. These can be used for multiband operation. One example with the 40 to 10m version is to use it with a 20m length of wire. This will then resonate on 40, 20 and 10m with the tuning unit.
All units are housed in a compact polycarbonate box measuring 65 x 60 x 40mm.
The box is rated for 25 years exposure to tropical sunlight as well as being waterproof to IP65.
The RF coax connectors use BNC female connectors with M6 stainless steel binding posts for the antenna wire connections.
All units have a waterproof breather that keeps water out but lets air and water vapour through to keep the inside of the box dry.
Each unit is rated and tested at 150W.
The small size, light weight and BNC connectors make them ideal for portable HF operation.
We can also supply N type female or SO239 connectors on request.
We can supply antenna wire and insulators. Please ask for a quote.
Here is a You Tube video by Julian, OH8GEJ using one of the prototype EF30B 30m bandpass antenna matching units north of the Arctic Circle:
Please inclue a note on the Paypal receipt with details of which frequency band you require.
The CCW End Fed Antenna Operating Manual for our earlier model can be downloaded as a PDF file here.
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