[Elecraft] K3 receive on .474.2 kHz

[ejkkjh at gmail.com]

After the install of the new KSYN3A synthesizer board, I tried WSPR on 474.2 KHz, using double size G5RV for receive.
I am able to copy WG2XKA using WSPR, at 597 km. 
I did some web searching for antennas, only thing I found were 160 ft verticals, not an option for me.
Anyone know of a wire antenna or something easier to put up?  thanks and 73
Emory WM3M