K0BRA/AMRAD Active Antenna Parts List
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C1¾ 68 pfd ceramic capacitor, 2KV, RadioShack.com P/N 900-7197( )
C2, C3, C4--1 ufd. ¾ 35 volt tantalum capacitor, Radio Shack P/N 272-1434,RadioShack.com P/N 900-2170
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FB1¾ Ferrite Bead, Amidon FB43-287, RadioShack.com P/N 900-5008(Extra beads may be added by some users to reduce high frequency performance.)
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I1¾ NE-2 neon lamp, Radio Shack P/N 272-1102, RadioShack.com P/N 900-2628( )
Q1¾ CP-666 JFET, Crystalonics Inc., TO-5 case( )
R1¾ 15 ohm ¼ watt, RadioShack.com P/N 900-0174(R1 may be replaced by some users with a choke to reduce higher frequency performance.)
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R2¾ 2.2 Megohm, ¼ watt, RadioShack.com P/N 900-0298( )
R3¾ 100 ohm, 1 watt, Radio Shack 2 pack, P/N 271-152, RadioShack.com P/N 900-0666( )
R4¾ 47 K ohm ¼ watt, Radio Shack 5 pack, P/N 271-1342, RadioShack.com P/N 900-0258( )
R5¾ 50 K ohm potentiometer, RadioShack.com P/N 900-7460( )
T1¾ User made transformer, 17 turns #30 bifilar wire on Amidon FT50-75 or FT50-J core
Hardware:
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1 ea. ¾ Inch copper water pipe 4 ½ inch long fabricated to instructions( )
1 ea. ¼-20 x 1 ½ inch brass bolt( )
1 ea. BNC Jack, Chassis Mount, Radio Shack P/N 278-105( )
1 ea. 1 inch Schedule 40 PVC pipe, 9 inches long( )
1 ea. 1 inch Schedule 40 PVC pipe cap, top, fabricated to instructions( )
1 ea. 1 inch Schedule 40 PVC pipe cap, bottom, fabricated to instructions( )
2 ea. ½ inch Schedule 40 PVC pipe, 1 inch long
Suppliers:
Local Radio Shack Store, locate through
http://radioshack.comRadioShack.com
http://radioshack.com, 1-800-442-7221P.O. Box 1981, Fort worth TX 76101-1981
Crystalonics Inc,
http://crystalonics.com, (781) 270-552217 A Street, Burlington, MA 01893
Amidon Inc. <
http://www.amidoncorp.com/>, (800) 377-3244 , local (714) 547-44461510 E. Edinger Avenue, Unit B
Santa Ana CA 92705, USA