Parts List for 2m ARDF transmitter type TRO-2 ---------------------------------------------- Capacitors 22pF and electrolytics 2.5mm leads, others 5mm Suppliers RS Components http://rswww.com Farnell http://www.farnell.co.uk Rapid Electronics http://www.rapidelectronics.co.uk CPC http://cpc.farnell.com/jsp/home/homepage.jsp Sycom http://www.sycomcomp.co.uk also http://www.taitcomponents.co.uk C 1 22p COG or NPO rs/367-3639 C 2 22p COG or NPO rs/367-3639 C 3 100N rs/220-7916 C 4 22uF/25 rap/11-0646 C 6 1n rs/464-7366 C 7 1uF/25 rs/228-6846 C 8 100uF/25 rs/205-1757 C 9 330n rs/405-8356 C12 10n rs/188-6170 C13 22p rap/08-0465 C14 22p rap/08-0465 D 1 1N4148 rs/446-8551 D 2 LED yellow rs/229-2504 D 3 LED red IC1 78M05 rs/224-9336 IC2 16F84A far/3321356 J 1 phono Socket rap/20-0215 L 1 5T/6mm 22SWG L 2 6T/6mm 22SWG L 3 3T/6mm 22SWG L 4 3T/6mm 22SWG Q 1 3.2768 MHz rs/657-527 Q 2 14.7456MHz for 144.525 out (see text) rs/478-9476 14.3182MHz for 144.775 out (see text) rapid/90-0220 R 1 470r R 2 1K8 R 3 4k7 R 4 4k7 R 5 4k7 R 6 10k R 7 1K8 R 8 470r R 9 10k R10 10r/3W far/327-7975 or 33r/3W far/ R11 100k RFC1 6 hole ferrite choke rs/260-6818 RFC2 12T 3mm 24swg RFC3 6 hole ferrite choke RS1 8x47K rs/434-4073 S 1 Tactile Switch (future) rapid/78-0286 SW1 8 POLE DIL SWITCH rs/103-0771 SW2 Sub-Min Toggle SPDT (body+dolly<20mm) rapid/75-0170 T 1 BLT50 (1.0watt out) rs/198-4426 OR 2N4427 (0.4watt out) crickwood electronics / sycom T 2 BD676 rs/348-4237 VC1 6-50P ceramic trimmer cap rs/127-307 VC2 5-30P ceramic trimmer cap rs/127-290 VC3 5-30P ceramic trimmer cap rs/247-0401 VC4 5-30P ceramic trimmer cap rs/247-0401 VR1 10K trimmer rs/488-5338 VR2 50K trimmer rs/488-5350 HARDWARE for 2N4427 [ HEATSINK for 2N4427 only rs/401-548 10xAA BATTERY BOX cpc/BT00802 [ 10xAA NiMH, 1500mAh or higher maplin/L58AG (1800mAh) for BLT50 [ 8xAA BATTERY BOX cpc/BT00839 7xAA NiMH, 1500mAh or higher maplin/L58AG (1800mAh) dummy battery DIY ] Mica washer for BD676 (T2) 3 PIN HEADER rs/251-8092 PP3 clip - solid type rapid/18-0092 AB28 Ali-box cpc/EN81252 4 off 20mm metal hexagon threaded spacers rs/222-424 8 off M3x6mm bolts with captive sp washer rs/278-641 Power socket 2.1 or 2.5mm Sheet of thin plastic for battery box housing (see box drawing) BNC socket 4 hole type easier to fix (using 2 holes) G3ZOI PIC software Small unregulated AC/DC 300mA 3v-12v Wilco