10/20/40 Mini End fed antenna kit, including 100 Watt 1:49 impedance transformer, DIY kit
An advantage of an end fed antenna is of course the simplicity, especially for field work this is a huge advantage. Put a telescopic mast against a pole, hook the antenna to the top and slide it out. You are on air within 5 minutes! An additional advantage is that the 10/20/40 mini end fed antenna can easily be vertically polarized. This makes the antenna convenient for (DX) long distance connections. The 10/20/40 Mini End fed Antenna Kit has a total length of approx. 11.9 meters. From the feed point first 10.1 meter antenna wire then a coil of about 35 uH and then another +/- 2 meters of wire.
The feed point of the 10/20/40 Mini end fed Antenna kit is a broadband impedance transformer. This means that the end fed wire antenna, which has a very high impedance of around 2500 Ohm, is transformed to an impedance of 50 Ohm.
This Mini End Fed Antenna is supplied with your choice of litze.
Experimental Wire: This wire consists of 1.0 mm2 braided copper wire with a UV resistant black shield. The total diameter is about 2 mm. Perfect for experiments or holiday antennas. Because the core only consists of copper, this wire will stretch over time and continue to stretch. The tensile strength of this wire is therefore also limited.
Copper/Kevlar Wire: This antenna wire is produced especially for HF Kits local in the Netherlands. The wire consists of a Kevlar core with around 1.1 mm2 tinned copper braiding. 1x 0,4 mm Kevlar en 24x 0,25 mm copper. The insulator consists of black UV resistant PE. The total diameter is about 2.5 mm. Tension force approx. 50 kg. In this way a strong, flexible and relatively light wire is obtained.
This kit includes:
- 12.5 metres Antenna wire
- 19 mm PVC Pipe for coil
- 5.5 Meter 0.75 mm winding wire for the coil
- 25 mm heat shrink sleeve for coil insulation
- 1x Stainless Steel Cable Clamp
- 1x End Isolator
- 1x Cable lug 5mm
- 1x Heat shrink sleeve for cable lug
1:49 Mini Impedance transformer:
- IP65 enclosure 64x58x35 mm
- Ferrite toroid Amidon FT140-43
- Winding Wire 1.00 mm
- 100 pF Capacitor 1kV
- BNC Chassis Round
- M5 Cable Shoe
- Stainless Steel M5 Bolt 25mm
- Stainless steel M5 Wing nut
- Stainless Steel M5 nut 2x
- Stainless Steel M5 washer 2x
- Stainless steel M5 Spring washer 2x
- Stainless steel M5 tooth washer 2x
- As much as possible, Hang the antenna free from interfering elements
- This antenna can also be used as a sloper.
- In case of common mode issues, use a common mode choke. Do not place this choke directly at the feed point of the antenna.