VK4YE Compact End-Fed 5 Band HF Antenna

• Antenna Type: End Fed
• 20.2 meters long then with a 70uH loading coil, and finally another 4.2 meters.
• Bands 80m 40m 20m 15m 10m. 17m useable with radio’s internal ATU.
• Power Rating 400W PEP unprocessed SSB with FT240-43 ferrite core.
• 100W PEP with Jaycar LO1234 or FT140-43 ferrite core.
• Loading Coil 120 turns of 1mm enamelled wire on 25mm OD PVC former.
• RF Transformer FT240-43 core, turns ratio 2:13 90pF compensation capacitor across the primary winding.
• CM Choke 5 turns of RG58 coax cable through 4 x LO1234 ferrite cores.

NOTE: VK4YE states... "As the length of the antenna is around 2/3 of the span of a half-wave dipole on 80m, there are two compromises. Firstly, bandwidth on 80m is restricted to about 80 kHz at the 2:1 SWR points, and secondly, there will be a reduction of around 1.5 S points in both transmitted and received signals." Clearly, a 80 meter wire is the way to go if space is available