From the Audio DesignLine Newsletter of 12/29/05:
Power a radio by the heat generated by a lantern seems like an unlikely proposition. But this is exactly what a product from UK-based Navitron does. The unlikely product is unique in the marketplace……Read the article.
This looks like a cool gadget to me, although the company’s website does not list a price. Still, it looks ripe for modification. I could see replacing the radio with a small QRP rig.