Radio Eastern FM… Your Voice In The Outer East

Make Your Own Aerial

To improve reception of your Eastern Suburbs Community radio station, EASTERN FM, here is an easy to make antenna that is tuned exactly to 98.1 MHz. Two versions are included, a simple dipole made from feeder ribbon, plus, for those DX enthusiasts with metal working capabilities, a more advanced 4 element vertically polarized version is also shown in figure 2.  As Eastern FM 98.1MHz is right in the centre of the FM band, reception from all other FM stations will, as well, be improved.

The simple quick antenna as per figure 1 is made from ordinary flat black balanced 300ohm feeder ribbon (if clear ribbon is used, it will deteriorate within a couple of years in sunlight, and the plastic will break down).  Note that even Bell wire is better than no antenna at all.

Cut a 1.27 metre length of ribbon, bare the wires at each end and twist them together.
Trim them back to make the length 1254 mm. 
Fold in half (to find centre) and cut one wire (refer to Figure 1).
Cut another length of ribbon long enough to reach the radio and connect to the antenna as shown.
At the radio, connect to the 300 ohm antenna terminals.

Because this version (figure 1) antenna is vertical and is omni-directional there is no need to orient it toward the station.

For longevity the joins and ends should be soldered and covered with tape if used outside. This antenna will improve reception of all FM stations. Mount it as high as possible.

If the antenna is to be used outside, black ribbon will last longer, due to its inbuilt UV protection.

For those DX enthusiasts, with metal working capabilities, a more advanced 4 element vertically polarized version is included, refer to Figure 2.  Of course, the ‘folded dipole’ shown in Figure 1 could be made from a cut to length of scrap copper waterpipe, bent and joined at each end, and terminated in the middle with the feeder ribbon cable.

Once built, it should be mounted securely away from trees and sources of interference.  The mounting should be done by a suitably experienced and qualified antenna engineer, using appropriate safety equipment and practices.

It should have the shortest element directed to Velma Grove, Croydon North, 3136
Melway ref 50 D/E 5/6, near to the eastern end of Valda Ave (where it meets Velma Grove).