Speaking of NAVSHIPS 900,109 (Catalogue of Navy Type Electronic Material), is there a copy on-line or any chance of borrowing some volumes to scan some day? Nick K4NYW www.navy-radio.com On Tue, Aug 2, 2011 at 3:22 PM, Mike Hanz <aaf-radio-1 at aafradio.org> wrote: > NAVSHIPS 900,109 sez that it's an RF choke for FH, SH, and SJ radars, Hue: >