Dr. Phil's Radio Designs
Dr. Phil's Radio Articles

Copyright 2014
feel free to distribute PDFs

Shortwave Buying Guides
2011 Shortwave Guide
2008 Shortwave Radio Picks
2006 Radio Buying Guide
2005 Portable Guide
2005 Tabletop Guide
SSB Cookbook NEW

Block Diagrams
DE1103 Block Diagram
DE1102 Block Diagram
DE1101 Block Diagram
KA2100 Block Diagram

"Must-Read" Article
Tuning Tricks Challenge SAM

Reviews and Comparisons
KA2100 Superior by Design
DE1102 Mini-Cookbook
DE1103 Cheat Sheet 
PL390 Cheat Sheet
Eton E1 SWL Tips
FRG100 SWL Tips
R8B versus R75
E1 versus Sat800
E1 Flaws List
English Broadcasts Statistics
Graphs JPEG Eng1 Eng2
DE108 Mini-Radio
Scanning Speed War

ICOM R75 Related
R75 Cookbook
Fidelity Increase Mod
Fidelity Increase Mod Notes
Cheap AM Filter Mod
ECSS Volume Mod
Voice Synthesizer Volume
Display Frequency Calibration
Pete's MW Attenuator Mod
Soldering Lessons
Printable Logsheet
PhilSCAN

S10MK2 versus R75
E1 versus R75 NEW!

Dr. Phil's Radio Designs

Copyright 2014
feel free to distribute PDFs

Hacking the Si4734
Si4734 Hardware Guide
Si4734 Software Guide
Si4734 Shortwave Antennas
Si4734 KK-D48L
Si4734 Homebrew Radio
Si4734 Offset Tuning
Si4734 Digital Filters
PL390 FM DX King

Hacking the Si4835
Hacking the KA321 NEW
KA321 Update NEW!
KA321 MW NEW
KA321 FM NEW
KA321_SW NEW
Current Wars NEW
Si4831 Mechanical Tuning
RadioShack 12-586 NEW

Single Triode Receivers
Angelodyne
Regerative Plate Detector
Hellenedyne II
JFET Hellenedyne NEW
Calculate Transconductance
Hellenedyne
Hellenedyne Addendum
Theoflex


Pentode Superregenerator

QRP Tube Superregen
Oscillodyne Superregen


Vacuum Tube Charts
Charts JPEG Rare QRP Space

Single Transistor Receivers
Dee/Mitch-dyne
Globe Patrol Junior
Science Fair Radio NEW
Dee/Mitch-dyne II
Transistor Power Gain
NEW!

Single Transistor FM DX
Heliosdyne NEW
Heliosdyne Photos
Pictures JPEG Helio1 Helio2
Heliosdyne Addendum
Angelodyne Detector

Realistic DX-120
DX-120 Star Patrol NEW!


Sony Walkman Mods
S10MK2 to Shortwave
S10MK2 Handbook NEW
SRF59 to Shortwave
SRF59 Handbook

SRF59 Audio 12MB Audio WAV

Sony CXA1600P
CXA1600P to Shortwave
NEW!

External Links
TheRadioBoard
Hellenedyne
Hellenedyne Homebrew
Hellenedyne in Contest 1
Hellenedyne in Contest 2