Cow cockies, utes and antennae.

Just got back from a drive to Bilpin (yes, I bought some apples from a 
roadside vendor). Saw lots of cow cockies driving their utes. Amongst the 
usual pithy and amusing stickers plastered on their vehicles (such as:
"Give 
a horse a rest, ride a cowboy" (girls must really love that stuff - I
think 
I'll buy one for the Dunnydore)) I saw a large number of antennae on their

vehicles. The record was 7. What gives? I worked out a few:

27MHz CB
44MHz CB
Car radio
Mobile 'phone

What the Hell are all the others for? Are they just to impress the girls?

Trevor Wilson