Read More
Seen this product cheaper elsewhere?
Call 0345 2300 599MyDEL 49:1 EFHW Antenna Kit
Everything you need to build your own end-fed half-wave antenna, including 50 metres of premium Messi & Paoloni Dipoflex antenna wire and your choice of a 200 W or 1 kW 49:1 matching transformer.
A 49:1 end-fed half-wave is one of the easiest ways to get several HF amateur bands from a single length of wire. Choose the transformer to suit your station, cut the supplied Dipoflex to suit the highest band you want the antenna to cover, then install and fine-tune the wire for your individual location.
Proper antenna wire, not generic hookup cable
Each kit includes a full 50 metres of Messi & Paoloni Dipoflex. This gives you enough wire to construct either a 40m or 80m-based EFHW, with useful wire remaining for tuning, experimentation or a counterpoise if required by your installation.
Choose the highest band you want to cover
An EFHW cut for a lower-frequency fundamental band can also operate on several harmonically related higher bands without requiring a separate wire for each band.
An external AMU/ATU may also make operation possible on additional bands such as 30m, 17m and 12m, depending on your individual installation.
How much Dipoflex should I cut?
Simply select the highest metre band you want your antenna to cover and we'll give you a recommended initial length to cut from the supplied 50 metres of wire.
Every installation will be slightly different
Antenna height, configuration, nearby buildings, trees, ground conditions and other surrounding objects can all shift the resonant frequency. Start slightly long, install the antenna and then shorten or fold back the end gradually while checking the SWR.
Compact & Portable
Choose the 200 W PEP transformer for lower-power home and portable stations where compact size and convenient installation are the priority.
High-Power Option
Choose the larger 1 kW PEP transformer for higher-power stations requiring substantially greater transformer power handling.
High SWR dramatically increases heating and stress inside the 49:1 transformer. Reduce transmit power when using high-duty-cycle modes and never assume that the transformer's headline PEP rating applies continuously when operating into a poor SWR.
Damage caused by excessive power or operation into a high SWR, including an overheated or melted transformer, is not covered by warranty.
What's in the Kit?
MyDEL 49:1 EFHW Kit Technical Information
Complete DIY end-fed half-wave antenna kit with 50 metres of Messi & Paoloni Dipoflex wire and a choice of 200 W or 1 kW 49:1 matching transformer.
Kit Specification
| Antenna type | End-fed half-wave (EFHW) |
|---|---|
| Matching ratio | 49:1 |
| Transformer options | 200 W PEP / 1 kW PEP |
| Antenna wire | Messi & Paoloni Dipoflex |
| Supplied wire length | 50 metres |
Messi & Paoloni Dipoflex Wire
| Conductor material | Pure copper |
|---|---|
| Conductor construction | 19 × 0.29 mm stranded copper |
| Conductor area | 1.25 mm² |
| Conductor diameter | Approx. 1.45 mm |
| Overall diameter | Approx. 3.1 mm |
| Electrical resistance | 15 Ω/km |
| Outer jacket | Black polyethylene with UV filter |
| Quoted tear resistance | 45 kg |
Typical Starting Lengths
| Fundamental Band | Approx. Nominal Length | Common Harmonic Bands |
|---|---|---|
| 80m | Approx. 38–39 m | 80 / 40 / 20 / 15 / 10m |
| 40m | Approx. 20 m | 40 / 20 / 15 / 10m |
| 20m | Approx. 10 m | 20 / 10m |
Kit Contents
Calculated antenna lengths are starting figures only. Final resonance will vary with antenna height, configuration, nearby objects, ground conditions and installation environment. Always begin slightly long and tune the antenna after installation.
High SWR and prolonged high-duty-cycle transmission can cause excessive heating in the matching transformer. Damage caused by excessive power or operation into an unsuitable SWR is not covered by warranty.
Shipping:
We have several shipping options for our products, including next-day and Saturday/Sunday delivery for certain items. Please see these options at checkout.
Returns:
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. Large items cannot be returned if they have been assembled, unless faulty.
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]