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DX Engineering Vertical Antenna Matching Network DXE-VMN-1
SKU Part Number:
DXE-VMN-1
DX Engineering Vertical Antenna Matching Network
The DX Engineering Vertical Antenna Matching Network, DXE-VMN-1, is a custom-designed impedance...
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£109.99
£91.66
Availability: In stock
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Call 0345 2300 599DX Engineering Vertical Antenna Matching Network
The DX Engineering Vertical Antenna Matching Network, DXE-VMN-1, is a custom-designed impedance matching coil that is used at the feedpoint of a low band HF quarter-wave vertical or a Hustler 4-BTV, 5-BTV or 6-BTV multi-band vertical antenna. In most ground-mounted 160, 80, 60 or 40 meter mono-band vertical antenna installations with very good radial systems and high efficiency, feedpoint impedance at resonance is naturally well below 50 ohms. Achieving the best SWR match to 50 ohm coaxial cable on these resonant vertical antennas usually requires this type of coil for adjusting feed point impedance.
The DXE-VMN-1 works as an impedance matching coil, also known as a shunt coil, because it is installed in parallel with the feedline, from the antenna to ground. Plus, it connects the antenna to DC ground to bleed off, or shunt, any static electric charge on the antenna to ground. Yet, it works perfectly as an impedance transformer at HF, just like a hair pin or beta match on a Yagi, easily handling legal limit RF power.
The DXE-VMN-1 can aid in matching the low-impedance feedpoint of a multi-band antenna to a reasonable SWR in the user-selected portions of 80 or 40 meter bands without affecting the operation on the other, higher frequency bands. The DXE-VMN-1 has a special coil tap clip to make the inductance adjustment needed for the correct match.
NOTE: This matching network is not for use on 43 ft. non-resonant multi-band verticals. It cannot be used as a series coil for loading a vertical for lower frequency operation at high power. Matching network shunt coils, loading coils and baluns cannot be used on verticals used in a phased array. Most phased vertical array systems cannot work with matched 50-ohm feedpoints, but rather require 35-ohm, natural impedance feedpoints. Therefore, use the DXE-VMN-1 only on single vertical installations.
DX Engineering Vertical Antenna Matching Network features include:
* Precision-machined coil tube
* Highest quality 12-gauge solid tin coated coil wire for high power handling, corrosion resistance, ease of soldering, and long-term reliability
* Custom-made silver plated DX Engineering Coil Tap Clip (extras available separately as DXE-CLIP-P)
* Custom L bracket for mounting to the optional DX Engineering Radial Plate, DXE-RADP-3
* #14 AWG stranded copper wire with ring terminals for connection to the antenna (adapt or remove as needed for other antennas)
* Stainless steel mounting hardware
When installed properly as an impedance matching coil, the DXE-VMN-1 easily handles the legal limit Amateur Radio power level of 1500 watts, 1.8 through 30 MHz.
DXE VMN-1 maximum inductance by frequency:
300 kHz - 7 MHz: 5.6uH
Up to 14 MHz: 7.2uH
Up to 21 MHz: 8.5uH
Up to 28 MHz: 8.0uH
The DX Engineering Vertical Antenna Matching Network, DXE-VMN-1, is a custom-designed impedance matching coil that is used at the feedpoint of a low band HF quarter-wave vertical or a Hustler 4-BTV, 5-BTV or 6-BTV multi-band vertical antenna. In most ground-mounted 160, 80, 60 or 40 meter mono-band vertical antenna installations with very good radial systems and high efficiency, feedpoint impedance at resonance is naturally well below 50 ohms. Achieving the best SWR match to 50 ohm coaxial cable on these resonant vertical antennas usually requires this type of coil for adjusting feed point impedance.
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If you have any equipment that needs to be returned to Martin Lynch & Sons, please fill out the form below:
Upon receipt of goods you have 14 days to return goods however the goods must be returned in original packaging and care must have been taken with the goods you wish to return. Under distance selling regulations you are not entitled to any refund on carriage charges or modification charges made at your request.
Warranty Terms and Conditions
Outside of the 14 faulty return period, returned items cannot be accepted, unless covered by manufacturer's warranty. We will repair as much as possible on site however in exceptional circumstances products may have to be returned to the manufacturer of distributor.
For repairs/replacements under manufacturer’s warranty for any item please download a ML&S return form from the link above and return to ML&S with the faulty product.
International Warranty information
Warranty service for items we sell is available in the U.K. only, unless otherwise noted. It is your responsibility to pay freight for returned items to the U.K. and back to you for desired warranty coverage. All of our NEW products come with a minimum 12 month warranty, (Yaesu & Icom 24 months), with up to 90 days on second-hand equipment. Items returned for service must state "returned goods for repair" on the return air waybill or U.K. import customs duties apply and will be added to your invoice. For more info about returning items please contact our customer help desk, [email protected]