Andy's
Circuit
Diagrams

Home Page.
My Frequency Database.

Andy's Amateur Radio Circuit Diagram Collection
Andy's CB Radio Circuit Diagram Collection
VHF Wideband 250mW FM Transmitter
VHF Wideband FM Receiver
VHF Xtal 250mW Transmitter
VHF Xtal NBFM Receiver
VHF Video Transmitter
HF to VHF 18dB Preamp
VHF 30Watt RF Amplifier
UHF 20Watt RF Amplifier
100mW VHF Telephone Transmitter
Bug Sniffer
Full Duplex Tranciever
VHF Stereo FM Transmitter
Four Channel Radio Mic Transmitter and Receiver
144MHz Xtal Controlled FM Tracking Transmitter
7MHz AM Transmitter
27MHz Radio Conrtol Transmitter and Receiver
RF Low Pass Filter
Simple VHF Airband Receiver
RF Diode Wave Absorbtion Meter with LED Signal Level Indication
RTTY, SSTV and Pager Decoder Interface
Continuous Tones Controlled Squelch System
1750Hz Tone Burst for Amateur Repeaters
Audio operated switch
More to come. Watch this space
More to come. Watch this space
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E-mail me at ajp@radiowaves.fsnet.co.uk