I wrote, incorrectly: >Even more obvious than THAT is the tube line-up. The second IF stage >tube is a 12SK7 in the ARA. It is a 12SR7 in the AN/ARC-5. Of course, the last sentence should be: "It is a 12SF7 in the AN/ARC-5." Mike / KK5F Note to self...don't trust momory!