Table of Contents
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Antennas Radios Amplifiers Baluns and Receiving Systems for HF
History of 160 Meters including W1BB Stew Perry letters
Sound/w8ji2160.wav
160 History/hist160dx.pdf
160 History/w1bb.pdf
160 History/bul0263.pdf
160 History/bul0462.pdf
160 History/bul1062.pdf
160 History/bul1262.pdf
160 History/let6263001.pdf
160 History/let63.pdf
NDB and Fish Net Beacons
Sound/OS 515kHz.mp3
Sound/DIW.mp3
Sound/NDB/pun.mp3
Sound/NDB/ndb_beq.wav
Sound/NDB/ndb_image.wav
Sound/NDB/nbd1840.wav
Amplifiers and Vacuum Tubes Tuning Loading and Arcing
images/Carbon_Metal_resistors.jpg
RF Amplifier and High Power Parts
Vacuum Tubes For Sale
Ameritron AL80B AL811H AL572 Amplifier Trouble Shooting
AL80B Ameritron
AL811H Amplifier Myths, Changes, and Information
AL811H and 811 tuning supplement
AL811 Reliability Mods
AL811 field update
AL811H airflow measurements
AL811 Input Switch Alignment
ALC Exciter Power Overshoot
Arc protection AL572
bandswitch failures
Arcing and component failures related to antenna systems
Relay Timing System for HF Amplifers
Switch Installation
Blocking Capacitor
Capacitor Arcing
Bias of power amplifiers
CB Amplifiers Converted to Ham
Clipperton
Collins 30L1
Filament Voltage life
Vacuum Tubes/CPI AB-18 New v2.pdf
QST The Care and Feeding of a 3-500ZG filament
Vacuum Tubes/high_voltage_rules_revised.pdf
Gettering Tubes AL572B AL80B
Electronic automatic dynamic RF Bias
EBS-1 repair
Fault Protection
Cathode grid fuse resistors
Fusing and Floating Grids
FL2100 Yaesu Oscillation
Grid resonance
Oscillations at HF or the desired operating frequency
Tuning loading RF amplifiers tune PA tank adjustments
Metering amplifier or transmitter
Spreadsheets/meter calculator.xlsx
Neutralizing Amplifier
Neutralizing AL811H
Ameritron TR T/R Relay Module
Relay Interface System for HF Amplifiers
Relay amplifier buffer
Relay Contact Cleaning Burnishing
RM HLA-150 test
SB220 SB221 arcing problems improvements modifications
Shortwave Broadcast Amplifier
Tank Circuit
Arcing parasitic oscillation amplifier stability
Tuned input circuit
Vacuum tubes and vaccum tube failures
811A tube 572B tube history
Tube Characteristics
Vacuum Tube Amps
Grid Driven Tetrodes
Grounded Grid Amplifiers
images/Amplifier/7094.pdf
VHF Stability
images/Amplifier/Tube pix/yc156-arc-grid1-web.jpg
What does parasitic suppressor do?
Testing for Stability
572B Arcing in 572 failures arc sb 200 dentron heathkit yaesu 2100 oscillation problems
572B tube preconditioning
8877 3cx1500A7 arcing short failure
SW BC amp
RF Plate Choke
Ten biggest amplifier mistakes
Power line voltage
Amplifier power supply design
TL922 Amplfier TL-922 Kenwood Modifications
AL80 Ameritron History
AM Linear Amplifiers
Tuning Aid TOF1
AL80B install
AL811 series install TOF and TOF with Grid Protect
Antennas for Receiving and Transmitting
Antenna Grounds
Counterpoise Systems
FCC ground proof
Folded Counterpoise Systems
Balun and Transformer Core Selection
Baluns on Tennadyne and other LPDA Log Perodic Antennas
1:1 current balun
4:1 balun design and operation
Sleeve Baluns
Antenna Tuner Baluns
toroid balun winding
Transmitting Baluns
Magic T combiners splitters and how they work
Common mode current
common_mode_current_files/filelist.xml
Crossfire Phasing
curtain antenna sterba bruce array Lazy H
Sterba Curtain fo All Bands
multi band super mini loop antenna
Detuning Towers
E-H Antenna
Baluns and verticals
End-fed 1/2 wave parallel resonant feed system end feed
End-fed Vertical and J-pole
Rohn 65G project
G5RV Antenna
Gotham Vertical Antennas
Ground Plane Verticals
Image1/Skirt_feed.jpg
Mobile antennas, short verticals, loading coil loss,and loading coil current
Agreeing Measurements
Roy's Measurements
images/mobile/Closeup.jpg
Inductor operation
Mobile Antenna Current Measurements at W8JI
Inductor Current Time Delay
Lifting Rohn 45G 25G tower
Inductors
Inductor Spice Model
Mobile Antenna FS Comparisons
NVIS N.V.I.S antenna
Omega and Gama Matching
Phasing Systems
Cubical Quad Antenna
Delta loop
Small antennas and radiation resistance
Limited Space Antennas
Long wire antenna random wire
Comparison of Beverage antenna,magnetic loop antenna,and phased vertical receiving antennas
Beverage Antenna Construction
Echelon-Log Beverages
Antennas/w8ji parallelgram01.EZ
Antennas/logbev.ez
K9AY Flag Pennant Ewe Terminated Loops
Antennas/k9ayloop_mod.EZ
Small Magnetic Receiving Loops
Loop text
Pre-amplifiers
Preamp Summary
Receiving_basics
Slinky and Loaded Beverages
Antennas/loaded_bev.EZ
Small Vertical Arrays
Antennas/rxvrhat.ez
W8JI Receiving Antenna Systems
Testing for and Locating Shack Noise
goniometer adcock antenna
Reflections
Rhombic Antennas, V-beam, and Inverted V
Rotating Tower W8JI
88 foot dipole antenna and other short limited space dipole antennas
Short Verticals
Transmission Line 75 ohm CATV to 50 ohm non-synchronous Matching Transformers
Transmission Line Operation
images/Unipole.gif
Traps
Transmitting Antennas W8JI
TX_four_square
VSWR Reactive Power
5/8th wave mobile antenna vs 1/4 wave
Windom off center fed
end fed 1/2 wave matching system end feed
Screw in guy anchors, guy lines
EF johnson matchbox L network T network
Horizontal Loop Loading Methods
End-fed vertical j-pole and horizontal zepp
Splicing Antenna Wire
Folded Dipole
How Antenna Patterns are Formed
Test, measure balun, and compare antenna baluns or balums
Baluns/160m balun.EZ
Steel wool balun
Globe Scout, Heathkit DX-60, Viking Valiant, Viking Ranger, HQ-180, HQ-120
images/W8JKC/K8KYB-connie.jpg
images/Boatanchors/Heath-VF-1-and-PS-web.jpg
images/Boatanchors/Heathkit/HR-10B-Heathkit-web.jpg
images/Boatanchors/Heathkit/Heath-HG10-web.jpg
images/Boatanchors/Hammarlund/HQ-180-web.jpg
images/Boatanchors/Heathkit/Heath-DX60B-web.jpg
T-R Relays
Amplitude Modulation
BA Station
Choke Input Capacitor Input Power Supply
Collins Radio Cedar Rapids
Globe Scout 65A Globe Scout 65 modifications and restoration
Globe Scout 65 and 680 Modifications
Hammarlund HQ-180
Heising Modulation in WRL world radio labratories constant current Globe Scout transmitter
Heathkit DX-60 DX-100 Apache Mohawk Warrior HG-10 HO-10
Johnson TR Switch
EF Johnson Viking Ranger
Valiant power supply modulation audio keying distortion
Johnson Valiant Audio Modifications
Johnson VFO chirp frequency jump
Audio Mod Ranger Valiant
Power transformer stress
NI8G Tom O'Conner
W8JKC Clyde
TX Rx Switching
Dentron
8005 Rig
Link coupling
repairing heathkit meter
Design of Ham Vacuum Tube Transmitters
images/Boatanchors/Homebrew transmitter/Regulator1.xlsx
RF modulation detector
Allied Knight T-150
Selectivity Hallicrafters National Hammarlund
Building an Accurate Low Capacitance Current Meter
Capture Area Ae effective aperture
SC Rambler Hurst and Mustangs
Small Block Ford Heads
1989 Mustang LX Coupe
1989 LX Coupe II
Electrical system
Alternator Operation
Battery Wiring
Sensor Wiring
Ford EEC IV
Testing battery and charging system
Grounding Negative System
electrical noise EMI
Safe Battery Installation Guidelines
Mustang throttle position sensor
Rotating Mass, Available Horsepower, and Acceleration
Compression power gain
Fuel system
crimping fender lips
PCV System
Power Glide Ford Mustang Swap
Test Equipment and Meters
Computer A9L
Supercharger
RPM Limiters Fuel vs Ignition
Tire spin and MPH myth
Choosing Rear End Gear
images/Cars/calculator.xlsx
Distributor Stabbing and Operation
Radiator Fan Sensor
Torque Converter
images/Cars/Torque converter/MIT.pdf
Bellhousing transmission alignment
Checking bandwidth with receiver
Coaxial Cable Leakage
Coaxial feedlines, currents in feedlines and shielded wires
Unwanted Antenna Coupling
Diversity reception and transmission, stereo diversity receiver, and antenna polarization
Sound/WWVunlocked.wav
Sound/WWVlocked.wav
Rotation Polarization Fades
Sound/160m02082014.wav
Sound/V vs H carrier.wav
Recording of DX and other signals on 160 meters
Sound/BevPattern.wav
WAVE/qrn-demo.wav
WAVE/QRN_ja2zjw.wav
Sound/9v1goNov0303.wav
Sound/dx0jp.mp3
Sound/ra0ba-small.wav
Sound/ua0anw_qso.wav
Sound/uu4jmg060107.wav
Sound/uk8dan1.mp3
WAVE/vu7rg 160 jan 15 2007.wav
Sound/VQ9LA051129.wav
Sound/xu7acb121001_LP.wav
WAVE/xu7acb_am.wav
WAVE/jt1_k4zw112801.wav
Sound/vk9ml041702_am.wav
Sound/BQ9P_Q101103.wav
Sound/JA_yj0101203.wav
Sound/Aurora103003.wav
Sound/k1uo_JA_clipped.wav
WAVE/Dragon/radar_oh3xr.wav
WAVE/Dragon/INT10142.wav
WAVE/Dragon/JT1CO_Jammer.WAV
Sound/a51b.wav
Sound/N2XE 122304.wav
Filters and Stubs
Filters
ADSL Filter
Ground Systems
Lightning
Station Ground
House ground layouts
Ham Station Desk Radio Equipment Ground
Mobile Radio Wiring and Grounding
Consumer Equipment RFI
Cables and Wiring
Second floor grounding
Equipment Safety
Lightning strikes
Ground Loops
Ground resistance measurements
How to Check Wide Splattering Signals
Causes of CW keyclicks
WAVE/No_clicks_mono.wav
WAVE/FT1KMK5.wav
WAVE/FT1000D_stock.wav
Sound/1000MKV_USA_clicks.wav
WAVE/omni6.wav
WAVE/FT1000MP_inrad.wav
WAVE/Kachina_spur.wav
Sound/1000mpstock.wav
Sound/765.wav
FT1000MP MKV CW Keyclicks and Receiver Improvement
Image1/MK_V_IF_all_mod.jpg
Image1/mk_v_rf.jpg
FT1000MP Key click correction
Modification for FT1000 and FT1000D Keyclicks
images/clicks/FT-1000 FT-1000D/Keyclick-and-Noise-Blanker-.jpg
images/clicks/ClicksChange.jpg
What creates CW key clicks?
FCC 97.307 Rules govening transmitter bandwidth
An Intutitive Explainaion of CW Bandwidth
cw_bandwidth_described_files/filelist.xml
Occupied BW of CW
CW Bandwidth Analysis
cw bandwidth analysis_files/filelist.xml
MFJ 259 antenna analyzer calibration, problems, and service warnings
images/MFJ259/MFJ259B sch.jpg
Mixing Wide and Narrow Modes
RM-11305
Power Supplies
Radio Receiver Noise Local and Skywave
MFJ-1025/1026
Common-Mode Noise
Noise Sources
Pecipitation Static or P-static
Power line noise
radiation and fields
What Radio or Rig Do I Need
Receivers and Test Methods
Drake ICOM Yaesu receiver dynamic range measurement
Sorted by IM3
xtal
Improving the FT1000 Receiver close spaced signal performance
images/clicks/Noise_blanker.jpg
RF Relay Contact Rating
HF RF Noise mobile Powerstroke Diesel Ford
Repairing F250 Gauges
Skindepth, Litz wire, Braided conductors, and resistance
stacking antenna and broadside collinear gain increase
ESSB HiFi SSB transmitter bandwidth splatter
IC751A measurements
RF in shack with vertical and longwire antennas
RRAA_post
TKO 600 transmission shifting problem
Lamar County Georgia Animal Control Codes
animal control 2008_opt.pdf
D104 to low impedance
Table of Contents
New Page 1
new_page_1_files/filelist.xml
Train Real and Models
Real Train Stuff
Train Layout Wiring and Controls
Soldering track joints
Solder power tap to train track
Tunnel portal
Turnout problems
Track Resistance
W8JI Hamshack
W8JI
W8JI Contest Station
Transmitters, Amplifiers, and Linears
Dielectric Grease vs Conductive Grease
images/Cars/Battery/09980.pdf
images/Cars/Battery/NEW_8917_Marketing_WP.pdf
This is for emergency communications nets
Barnesville GA Lamar
Web Site Coming Soon!
images/Baluns/XLS/balun5m.xls
Barnesville-Lamar county
New Page 1
images/Cars/Shift point/shift point.xls
Old Picture
Snap on core material data
new/index.htm
