M0CVO Antennas, amateur radio antennas for fixed station or portable operations, HF/6m all are catered for. The antennas produced by us are all manufactured by Nigel Booth, M0CVO. They may not all be totally new designs but, I hope that they are an improvement on the originals. The Off Centre Fed Dipole (OCFD) has been used for many years, the most famous being the Carolina Windom. Both the HW-40 and the HW-20 are varients of this albeit at a much lower price and more affordable for today's radio amateurs. The long wire antenna has also been used for many years but is renowned for high feed point impedance and RF in the shack. We have incorporated the M0CVO 9:1 UNUN at the feed point and removed both these problems, creating an antenna that exceeds expectations and provides excellent performance with a small footprint. The LW-10 is just 10m (33ft) in length and covers all bands from 40m up to 6m via an ATU, the LW-20 is just 20m (66ft) in length and covers all bands from 80m up to 10m via an ATU. We also have a range of mono band dipoles, the MD-20HP for the 20m band, the MD-17HP for the 17m band, the MD-15HP for the 15m band, the MD-12HP for the 12m band and the MD-10HP for the 10m band. The Delta range of antennas, which are full wave loops, are proving popular. Recently introduced are the DBD range of antennas. These are shortened dipoles enabling LF operation in small townhouse gardens. These are now available through our store here.
To get your new antenna please visit our shop. Payment accepted by cheque or postal order, crossed and made payable to M0CVO Antennas (please do not send cash in case this goes missing in the post), or payment can be made by Visa, MasterCard, Maestro or JCB over the telephone at 01476 402550, or PayPal. We do have PayPal Here if you are visiting. If paying by cheque please add £5.00 p&p (£10 for HW-42HP or HW-80HP)
Payment accepted by cheque or postal order, crossed and made payable to M0CVO Antennas (please do not send cash in case this goes missing in the post), or payment can be made by Visa, MasterCard, Maestro or JCB over the telephone at 01476 402550, or PayPal. We do have PayPal Here if you are visiting.
If paying by cheque please add £5.00 p&p (£10 for HW-42HP or HW-80HP)
M0CVO Antennas are now also able to offer a 3D printing service. For full details please contact us using our Contact Form at http://m0cvoantennas.webs.com/contactus.htm.
Top quality HF Antennas made by radio amateurs for radio amateurs.
We are open 24 hours a day 365 days a year for online purchases or questions. However, for personal collections we are open from 9am - 4pm (BST) Mon - Fri by appointment only and on Saturday by previous arrangement only. For telephone enquiries and sales we are available from 9 - 5 Monday - Friday.
To buy any of the products on this page please visit our shop via the link at the top of the page.
Thank you to all those who did come and say hello at the National Hamfest by the way.
The HW-80HP, HW-40HP and HW-20HP (the HP stands for High Power) HF antennas for the amateur radio / ham bands. They take advantage of many previous designs based around the Off Centre Fed Dipole. Obviously this would give a feedpoint impedence of 300 Ohms so they are fed via a 4:1 balun to convert the impedence to something near 50 Ohms as seen by the transceiver. The HW-20HP runs well on 20M, 15M, 12M, 10M and 6M without an ATU and 40M, 30M and 17M with an ATU. It is comparable to the G5RV in performance on these bands, if not a tad better. It will easily handle 400W CW, SSB or FM. The HW-40HP is the same but runs well on 40M, 20M and 10M without an ATU and 80M, 15M, 6M and the WARC Bands with an ATU, I have even used one myself to work on 60m (5MHz) and the HW-80HP also offers operation on 80m with no ATU.
These are now the MkIII version - a new improved matching system, slightly shorter in length (40.56m, 20.28m and 10.14m respectively). The best just got better!
The HW-80HP has now (as from March 2016) been improved further and is in the MkIV version. This improves the matching on 80m and 40m giving you an all more enjoyable time operating on the HF bands.
These are all end fed long wire aerials. They all incorporate the M0CVO 9:1 UNUN at the feedpoint enabling them to be fed directly with 50ohm coaxial cable. The 9:1 UNUN also removes static noise and provides a DC path to earth. All are able to handle up to 400W RF (full UK limit).
LW-10: 10m in length, this will work on all bands from 40m - 6m via an ATU. Ideal where space is at a premium.
LW-20: 20m in length, this will work on all bands from 80m - 6m via an ATU. Big performance from a small footprint.
The latest addition to the M0CVO Antennas Stable, added in February 2011.
These are mono-band dipole antennas cut for the more popular amateur radio bands of 20m, 15m and 10m. Light enough for portable use and strong enouogh for fixed staion use.They will handle up to 400W CW and 500W PEP.
At the centre of these dipoles is the M0CVO 1:1 balun. This enables the antenna to be fed directly with 50 Ù coax via the SO239 socket at the feedpoint. The MD-20HP is cut for the 20m band (14.0 - 14.35MHz) , the MD-15HP is cut for the 15m band (21.0 - 21.45MHz) and the MD-10HP is cut for the 10m band (28.0 - 29.7MHz).
Of course, for those who wish to experiment or build their own antennas we also have a wide range of baluns and UNUNs.
Our 1:1 balun offers a means of replacing all that twin feeder needed for the centre of a dipole with a standard coaxial feedpoint. It also reduces much of the static build up found on ladder line.
Our 4:1 balun is a current transformer to enable an off centre fed dipole (Windom) or folded dipole to be fed with 50Ohm coaxial cable. Again it will reduce or remove the static build up on the antenna and so, reduce the noise level at the receiver.
Our 9:1 UNUN lowers the impedance seen on a long wire antenna to something nearer to the 50Ohms required by your radio. This provides for easier tuning and reduced noise.
All of the above will happily handle up to 400W of RF and give years of great performance. They are weather-sealed and built to exacting standards using quality RHOS compliant components. For those who wish to use a little more power and are able to, we also have a range of Baluns designed to handle up to 1.5kW.
All items are guaranteed for 3 months from date of purchase against any faults due to manufacture and may be returned in that time with details of fault. This will be void if there is evidence of wilful damage or tampering.