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Hermes-Lite Basic RF Frontend

softerhardware·Hermes-Lite·frontend/v1.42/frontend.kicad_pcb

Hermes-Lite Basic RF Frontend PCB layout, top view — open source board by softerhardware

About the Hermes-Lite Basic RF Frontend PCB

Hermes-Lite Basic RF Frontend is an open source PCB design by softerhardware, published on GitHub. It is a 2-layer board measuring 49.9 × 49.9 mm, with 63 components from 39 distinct parts.

Other key parts include the 25AA02E48T-I/OT, OPA2674 and ULN2803. By type, the board carries 19 capacitors, 17 resistors, 10 connectors, 9 inductors, 3 ICs and 2 transformers.

It belongs with the rf & radio designs in this gallery.

From the project

Deprecated project!!! See Hermes-Lite2 at main web site

Hermes-Lite 1.x Deprecated Project!!! =====================================

This project is deprecated. Current development is now focussed on the Hermes-Lite 2.x. See the main Hermes-Lite Web Page for the latest links and details.

The hardware is based on Analog Devices' AD9866 which is a 12-bit broadband modem mixed signal front end that has been repurposed as a direct down conversion and direct up conversion SDR transceiver covering 0-36 MHz. A hardware prototype has been built and tested that uses a BeMicro SDK FPGA board for DSP processing. The FPGA firmware is a port of the Hermes SDR…

Hermes-Lite Basic RF Frontend, from the project README
From the project README

Main components on the Hermes-Lite Basic RF Frontend

25AA02E48T-I/OTOPA2674ULN2803

Hermes-Lite Basic RF Frontend bill of materials (BOM)

63 components, 39 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
25AA02E48T-I/OT
PE4259
Microchip Technology
U2
1
OPA2674
U3
1
ULN2803
U6
1
FCX690B
Q1
1
MEC6-140-02-L-D-RA1
EDGE
Samtec Inc
CN1
1
GWE18DHRN-T9410
RELAYCNT14
Sullins Connector Solutions
CN2
2
SMA/BNC/HDR
P2, P3
6
TST
P4, P5, P6, P7, P8, P10
1
8:1Z
T1
1
1:1
T2
1
DIODESCH2
D1
1
BZT52B12
D2
1
MPZ2012S221A
FB
TDK Corporation
FB2
2
240n
L1, L2
4
270n
L3, L6, L7, L8
2
330n
L4, L5
1
CC0805ZRY5V9BB104
75p
Yageo
C1
1
CC0805ZRY5V9BB104
150p
Yageo
C2
1
CC0805ZRY5V9BB104
160p
Yageo
C3
2
CC0805ZRY5V9BB104
100p
Yageo
C4, C11
Show 19 more
QtyPartRefs
6
CC0805KKX7R7BB105
100n
Yageo
C5, C6, C7, C8, C12, C14
3
CC0805ZRY5V9BB104
100n
Yageo
C9, C10, C15
1
CC0805KKX7R7BB105
10u
Yageo
C13
1
CC0805ZRY5V9BB104
180p
Yageo
C16
1
CC0805KKX7R7BB105
100p
Yageo
C17
1
CC0805KKX7R7BB105
zero
Yageo
C18
1
F931A106MAA
zero
AVX Corporation
C19
1
RC0805JR-071K6L
33 1%
Yageo
R1
1
RC0805JR-07200RL
33 1%
Yageo
R2
1
RC0805JR-07200RL
10k
Yageo
R3
1
RC0805JR-0747RL
560
Yageo
R4
1
RC0805JR-0747RL
1000
Yageo
R5
1
75 1%
R6
2
24 1/4W
R7, R8
2
2200
R9, R11
2
1200
R10, R15
2
22
R12, R13
2
330 1%
R14, R16
1
1000
R18

Hermes-Lite Basic RF Frontend design files

The KiCad project lives in the softerhardware/Hermes-Lite repository on GitHub; these links point at the commit this page was built from.

Hermes-Lite Basic RF Frontend: common questions

How big is the Hermes-Lite Basic RF Frontend PCB?

The Hermes-Lite Basic RF Frontend measures 49.9 × 49.9 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Hermes-Lite Basic RF Frontend?

63 components, from 39 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 Hermes-Lite Basic RF Frontend design files?

From the softerhardware/Hermes-Lite repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.

Can I use the Hermes-Lite Basic RF Frontend design in my own project?

The repository has no license, so all rights stay with softerhardware. Use it as a reference, and ask the author before reusing the design.

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