If you just need a single channel receiver with Quick Call II capability, almost any alerting pager like the Minitors should work. You might need an attenuating patch cord between the pager and the PC. Minitors are all over Ebay and prices are dropping on the II's, III's, and IV's. The II's in particular are quite inexpensive now, and you can pick up a charger/amp cheap, too. The charger/amp is a good choice for your application because it has an antenna connection and an audio out connection. This guy refurbs Minitor II's and has a large stock of crystals and tone reeds:
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The Veetronix receiver might be a good choice, too.
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Even a Plectron will work. This guy repairs, refurbishes, and sells them.
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