Small Projects using PC Boards from ExpressPCB 

In Progress -- Suggestions and corrections welcome 

Updated July 2013


Additional Printed circuit boards are now available

Kits are now available through Chuck Steer, WA3IAC for the following small projects: Bargraph, Fan speeed controller, Sequencer, LED voltage monitor, and RF power Reference. Parts kits for other projects may also be available. Email Chuck for pricing and availability at chuckwa3iac@yahoo.com


New - from Microwavelengths, QST, July 2013
Sensitive RF Detector for Sun Noise and other uses
Sensitive RF Detector Board
PC board file for ExpressPCB included - make your own

PowerPoint Tutorial - Designing PC boards with free ExpressPCB software by K3TUF and W1GHZ


New - Locked VCXOs for Stable Microwave Local Oscillators with Low Phase Noise
Updated from Microwave Update 2012 with Phase Noise


96 MHz VCXO locked to 10 MHz reference and Phase Noise Plot
VCXO for Microwave LO Board
updated July 2013

*PC Boards available*


New - PC Board for A Flexible VCXO Locking Board - locks VCXO to GPS or 10 MHz reference
Updated from Microwave Update 2012


Left - 10 MHz VCXO locked to GPS ........................ Right - 16 MHz VCXO locked to 10 MHz reference
A Flexible VCXO Locking Board

*PC Boards available*


New - PC Board for ADL5324 Power Amplifier for Cheap and Simple Microwave Transverters
ADL5324 Power Amplifier for Cheap and Simple Microwave Transverters

*PC Boards available*


New - PC Board for Modest Power Amplifier for Cheap and Simple Microwave Transverters
Modest Power Amplifier for Cheap and Simple Microwave Transverters
using GVA-84

*PC Boards available*


New - PC board for A Panadapter for the FT-817 using the Funcube Dongle, by N1JEZ


N1JEZ Panadapter 10 GHz Screenshot, board, and installed in FT-817

PC Board for FT-817 Panadapter

Correction to Panadapter Board

A Panadapter for the FT-817 using the Funcube Dongle by N1JEZ

*PC Boards available*


New - 10 MHz Filter for GPS Frequency Reference



10 MHz Filter for GPS Frequency Reference

PC Board Not Needed


New - Miniverter-F

A 2-meter transverter for Flex-1500 and Microwave Transverters

Miniverter-F for 2 meters, also 222 or 432 MHz

*PC Boards available*


New - A Personal Beacon for 10 GHz

10 GHz Personal Beacon or LO for 8 to 12 GHz

Update and construction hints

*PC Boards available*


Multiband Microwave Transverters for the Rover


902, 1296, 2304 and 3456 MHz
Simple and Cheap

*PC Boards available*


An Even More Fool-Resistant Conditional Sequencer

Even More Fool-Resistant Conditional Sequencer

Update November 2012

*PC Boards available*


Power Detector Board - VHF thru 10 GHz

Power Detector IC good to > 10 GHz

*PC Boards available*


From QST April 2007 "Microwavelengths"

RF Power Reference for power meter calibration


Microwave Update 2005


A Homebrew Ratiometer for Antenna Measurement, or a Handheld Network Analyzer


Updated 20 March 2007



LED bargraph indicator used above

*PC Boards available*



Battery-sharing Switch
*PC Boards available*


Chassis mounts and distribution boards for PowerPoles

Anderson PowerPoles are the connector of choice for 12 volt operation
Elegant PowerPole board fits in electrical outlet box

*PC Boards available* - Elegant distribution board for 4 or 6 PowerPoles

All-band portable power meter - 160 Meters to 10 GHz
Kit ABPM now available from Down East Microwave

Assembly Notes and Pictures


Fan speed controller - fan runs with a gentle purr at room temperature, speed increases as temperature rises. Can sense heatsink temperature.

*PC Boards available*



Lossless Current Monitor - 20 or 50 Amps

*PC Boards available*



LED Voltage Monitor -
A Single LED Battery Status Indicator for the Rover

*PC Boards available*



Utility Board for Op-amps and Comparators

*PC Boards available*



Tonemeter -
An Audio Tone Indicator for Tuning or Antenna Measuring

*PC Boards available*



A Voltage Standard for the Hamshack


Printed Hairpin Filters -
Designed using Ansoft Serenade SV software


222 MHz Transverter for the FT-817
 

Download Miniverter article



Two-stage MMIC amplifier in Pomona box



Simple, yet still "fool-resistant," sequencer for microwave transverters 


Enhanced version of "fool-resistant" sequencer with Power Output LED



Load tester for batteries and power supplies



  What's this ExpressPCB stuff, anyhow?
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