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Clocks
Panel-mounting clock
Sidereal Clock
LED matrix clock
Giant Nixie Clock
Radio Controlled Clock
Binary Clock
MSF Nixie 'Scope Clock
G0UPL
Radio G0UPL
G0UPL Talks
G0UPL Workbench
QRSS
30m QRSS beacon
30m QRSS junkbox tx
30m QRSS Si570 beacon
30m QRSS receiver
40m low power QRSS tx
Tropical QRSS
Mediterranean QRSS
Keyer chip
Receivers & Transmitters
CW Transmitter
Unichip 80m transceiver
40/80m CW/SSB receiver
20m/80m CW/SSB tcvr
30m Receiver
Radio Ozon
Fredbox: 2m AM tcvr
Crystal Radio
Simple radio receiver
Transistor SW radio
Valve SW radio
Hellraiser transmitter
Other Radio Topics
Crystal Sets to Sideband
Huff-Puff stabilised VFO's
GPS frequency reference
Experimental DDS
Radio-friendly PSU
Poundshop FM radio
Superdrg radio
Crystal penning
Crystal parameters
Antenna tuning unit
QRO dummy load
QRO ATU
Dad's radio circuits
Valve Collection
Phasing CW filter
Varicap diodes
Homemade Components
IF Transformers
Frequency Counters
Simple frequency counter
LCD Frequency counter
RF frequency counter
Frequency Counter
BCD frequency counter
BC221 model T
Electronics
Spectrum analyser Mk1
Spectrum analyser Mk2
USB charger
Feedback circuit
Dad's voltmeter
Heathkit signal gen
Power Supply
Simple intercom
Riskometer
Dekatron spinner
Tinyscope
Miniscope
Remote lighting controller
Discrete component logic
Wind speed logger
Wind speed logger Mk2
NBTV
Computers
Viscometer
The great Z80 project
Z80 computer
The Mandelbrot set
Asynchronous TTL CPU
CPCNG notes
F-CPU scheduler
Guest Project Gallery
LED clock
80m CW transceiver
Polyphase network
Polyphase receiver
80m CW transceiver
1-valve QRP CW TX
Nixie clock
Miscellaneous
Interesting junk
Monitor recycling
Datasheets
Downloads
101 things
Most Recently Updated
NBTV
CPCNG notes
CPCNG Notes: IDE interface
CPCNG notes: CPC compatibility
CPCNG notes: Memory mapping
Z80 Computer
Asychronous 40-bit TTL CPU
The great Z80 project
Z80 controlled viscometer project
CQ machine
F-CPU scheduler
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