Dear Friends, I have receiver with tag RP-1B on the front panel. Covers from 500 kHz to 30 MHZ. All tubes. Year 1961. Has anyone seen one of those before? I have been looking for any information on Internet and found nothing ?! Picture of the receiver can bee seen on : www.qsl.net/9a4na/images/rp1bb1.jpg Any information would be appreciated. Thanks for reading. 73 Willy