HardLabs

LPF Board HF-6m Forte600

SP6GK·LPF_Board_HF-6m_Forte600·KiCad/LPF_HF+6.kicad_pcb

LPF Board HF-6m Forte600 layout, top view — open source board by SP6GK
Simulate this board

About the LPF Board HF-6m Forte600

LPF Board HF-6m Forte600 is an open source PCB design by SP6GK, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 250 × 160 mm, with 129 components from 36 distinct parts.

Other key parts include the AMS1117-5, 74AHC595 and ULN2003. By type, the board carries 51 capacitors, 22 diodes, 21 inductors, 13 resistors, 5 connectors and 3 ICs.

It belongs with the test & measurement designs in this gallery.

From the project

Design of a LPF board with 6 filters covering entire HF spectrum and 6 m band.

For a detailed theory of operation and a description of the design process, you can read section 2.2.3 of my thesis: Optimization of HF Amplifier TLT Forte600 Documentation.

This low pass filter board was designed for a 600 W amplifier and successfully withstood 600 W of CW power with no issues. It is overrated to handle about 1 kW, however, in such case, the size of some of the toroids should be increased. These filters used in the Forte 600 (Forte 600 project repo) provide a worst-case harmonic suppression of 54 dBc for the 15 m band. Check the /Results directory for S21 and S11…

LPF Board HF-6m Forte600, from the project README
From the project README

Main components on the LPF Board HF-6m Forte600

AMS1117-574AHC595ULN2003

LPF Board HF-6m Forte600 bill of materials (BOM)

129 components, 36 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
AMS1117-5
U1
1
74AHC595
U2
1
ULN2003
U3
2
CONN_01X07
Conn_01x07
J1, J4
1
12V INPUT
J2
1
RF input
J3
1
RF output
J5
12
RM85
REL1, REL2, REL3, REL4, REL5, REL6, REL7, REL8 +4
2
10K
10k
RV1, RV2
12
1N4007
D1, D2, D3, D4, D5, D6, D10, D11 +4
8
SD12_SOD323
D7, D8, D9, D16, D17, D18, D21, D22
2
Schottky
D19, D20
15
L
L1, L2, L3, L4, L5, L7, L8, L9 +7
2
L
L6, L12
1
FT50-61 30T 1T RG-142 coax
L18
1
FT82-61 30T 1T-RG213 coax
L19
2
100U
100u
L20, L21
21
100N
100n
C1, C2, C3, C4, C5, C6, C8, C9 +13
2
10U
10u
C7, C17
1
10U
10u
C15
Show 16 more
QtyPartRefs
3
1u
C19, C46, C49
1
71P
71p
C21
2
123P
123p
C22, C40
2
203P
203p
C23, C41
2
357P
357p
C24, C42
4
834P
834p
C25, C31, C37, C43
3
C_Small
C26, C32, C38
2
127P
127p
C27, C33
2
218P
218p
C28, C34
2
360P
360p
C29, C35
2
635P
635p
C30, C36
2
10N
10n
C48, C51
1
10
R1
6
100
R2, R3, R4, R5, R12, R13
4
100
R6, R7, R9, R10
2
10K
10k
R8, R11

LPF Board HF-6m Forte600 design files

The KiCad project lives in the SP6GK/LPF_Board_HF-6m_Forte600 repository on GitHub; these links point at the commit this page was built from.

LPF Board HF-6m Forte600: common questions

How big is the LPF Board HF-6m Forte600?

The LPF Board HF-6m Forte600 measures 250 × 160 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the LPF Board HF-6m Forte600?

129 components, from 36 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the LPF Board HF-6m Forte600 design files?

From the SP6GK/LPF_Board_HF-6m_Forte600 repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the LPF Board HF-6m Forte600 design in my own project?

Yes, under the terms of its GPL-3.0 license, which SP6GK chose for the repository.

Similar boards