"news" wrote:
I need to improve my ground system, and am thinking of burying some
radials under the lawn.

Good idea. Bury anything that will conduct, eg biscuit tins! I spent
ages unwinding and burying the coils from old TV CRTs. 40 years ago (I
was a 160m nut) I bought a very large reel of bare 18 swg "garden
wire" from local hardware store. It looked like copper but too light
and seemed to be an ali alloy. It was buried in around 2"-4" slits in
100 - 150' lengths in clay-ish non-acid soil. Still looks in good
shape. I used choc block connectors to join the wires in pairs or
triplets, soldered the group and left a tail to make the next larger
group. Used heavy auto earthing braid for final lead into ground floor
shack.

Was it worth the trouble? Yes. With a ~200' inverted L (3/8th wave on
topband), no problem working Ws on a 500mW transistor (germanium!)
box. Dead band with earth disconnected.

Alf GW3SRG