Are you serious??? Why would you want to use SW radio to receive these stations when you can use any number of internet based devices to listen to these very stations with crystal clear audio?
Go out and buy yourself a Logitech Squeezebox and you will have access to just about any radio station on the planet played back through any sound system you choose. Same goes for many other solutions. Any web-browser will give access to any of your desired stations at no cost with crystal clear audio.
Try:
BBC Radio:
BBC Radio - The home of BBC Radio on the internet
ABC Radio:
ABC Radio
VOA:
VOA News - VOANews.com Webcasts
But SW radio ??? You obviously enjoy a challenge ... or maybe you're just taking the P155? You've gotta be!
ITG