KI5GRD Common Mode Choke Platform
author: gdusbabek
2 layer board of 3.31 x 0.63 inches (84.0 x 16.0 mm)
Uploaded:
September 09, 2026
Shared:
September 23, 2026
Total Price:
$10.40
PCB for building a common-mode choke for amateur radio use. The standard choke uses 10 bifilar turns of 16 AWG copper wire wound around a 15mm FT114-43 toroid. This board will also accommodate a FT140 or FT240 toroid as well.
Each end may be terminated with a Molex BNC connector (P/N 0731000105), an RG-316 pigtail, or a combination of the two.
Intended as a compact, build-it-yourself PCB for inline HF common-mode choke.
Current design version: 1.2 Board revision: A
PCB for building a common-mode choke for amateur radio use. The standard choke uses 10 bifilar turns of 16 AWG copper wire wound around a 15mm FT114-43 toroid. This board will also accommodate a FT140 or FT240 toroid as well.
Each end may be terminated with a Molex BNC connector (P/N 0731000105), an RG-316 pigtail, or a combination of the two.
Intended as a compact, build-it-yourself PCB for inline HF common-mode choke.
Current design version: 1.2 Board revision: A
