Recommended arrangement using long-wire . Minimum length 10 M, design length 15M.
A longer aerial wire can be used with the transmitter and will give a better range. Excellent
results have been obtained using a single long wire of approximately 18 metres length as
shown in the diagram. The aerial is essentially the length of the back garden, using
insulators that radio hams use. Roof top is the end of the wire, suspended via a tree at the
other end. Also, the use of a good Earth helps with signal efficiency and distance. A copper
stake in the ground is a good start. Search the Internet for further advice.
Maximise the signal level with the tuning control, whilst observing the signal level LED
display. Or even better is the use of a Field Strength Meter, which are readily available on
eBay.
It is possible to fine-tune the operating frequency by adjusting VC1 on the main circuit
board. (see pic) This adjustment is for ‘zero-beat’ of the signal (in comparison to another
signal*) but is not an essential adjustment and can be left if not required. (cap may look
different)
It also acts as fine-tuning alignment of the Phase Locked Loop oscillator.
*is an enhanced user requirement
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