In order to see how far the Long Ranger™ transmitter would reach it was connected to four AAA batteries (6 volts) and two antenna radials were utilized, one connected to the antenna terminal and the other to the circuit board ground, see the two black wires in the photo.
It's better to feed the half wave antenna in the middle because there is a good match to the low impedance output of the transmitter. It is possible to feed a half wave antenna at the end but it's a very poor match to most transmitters unless extra measures are taken to match the impedance.
We drove away from the hill using a standard digitally tuned car radio and achieved a distance of 15 miles (25 Km) before the signal started getting scratchy or noisey.
This is truly remarkable for such a low powered transmitter and proves what can be achieved with a clean signal that is exactly on frequency.
The receiver used also has a bearing on the distance possible. More range tests are planned using a more sensitive receiver and more suitable location such as between two mountain tops or skyscrapers.
Please let us know your experiences. We would welcome any feedback regarding range achieved using this transmitter's standard configuration.