- on RF (radio)
- Published in issue 1/2000 on page 0
Wideband active loop antenna
for general-coverage receivers
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CAM/CAD data for the PCB referred to in this article is available as a Gerber file. Elektor Members can exclusively download these files for free as part of their Membership. Gerber files allow a PCB to be produced on an appropriate device available locally, or through an online PCB manufacturing service. Elektor recommends its business partner Eurocircuits as the company of choice for its own prototypes and volume production in selected cases.
R1,R2 = 82k?
R3 = 560?
R4 = 220?
C1,C2 = 2nF2 ceramic, raster 5mm
C3 = 100nF ceramic, raster 5mm
C4 = 100nF, raster 5mm or 7.5mm
T1,T3 = BF494
T2 = BF451 (BF450)
K1 = BNC or cinch socket
10 to 15 metres enamelled copper or hook-up wire