VK7AXZ antennas

I only use two antennas, both telescopic section aluminum verticals. One at 45 feet,  base tuned for 80 and 40 metres and one at 15 feet base tuned for 20 metres.  

The big antenna is guyed in three places to withstand the high winds we get here. The base loading unit consists of a bottom grounded 80 metre loading coil tapped for 50 ohm feed from a series choke connected to the coax. On 40 metres a switch introduces a series capacitance at the top of the coil to offset the inductance of the antenna and the loading coil on 7mhz. This configuration allows the antenna to be tuned for each frequency with the flick of a switch.

The 20 metre antenna uses a standard series base loading coil to obtain resonance. Other than this it is just a short version of the 80 metre antenna, small enough not to need guying. The satellite dish is for internet access.