Posts
Accessories
Activities
- APRS AT Golden Packet 2014 NoVA Report
- APRS AT Golden Packet 2015 NoVA Report
- APRS AT Golden Packet 2016 NoVA Report
- APRS Golden Packet Gear
- Beach fishing for QSOs with an STL
- Elecraft K2 – My Favorite Field Day Station
- Field Day 802.11 Wireless Network
- Field Day Lessons Learned and Future Requirements
- Field Day Logging Computer Networking Tips
- Field Day Myths, Tips and Warnings
- Field Day Prep
- Field Day Wireless Network Should Have Autonegotiation Turned Off
- First SOTA Activation – Using VHF FM
- Hawksbill Mtn. APRS Appalachian Trail Test
- Help Needed for Ham Hike in Virginia
- Hiking, Hams and Hills – Station #6 of the AT Golden Packet
- KX4O 1B VA Field Day 2012
- KX4O 1B-Battery VA Field Day 2015
- KX4O/P VQP 2015 Expedition from MPX
- SOTA HNY Activation
- Stony Man AT Golden Packet 2012
- Virginia Summits On The Air
Antennas
- 1/2 Wave vs. 5/4 Wave VHF EZNEC Shootout
- 2 Meter, 5/4 Wave Antenna Revealed
- 3D Model for AHVD Antenna
- 40m Loop Ground Wire Test
- 40m Mastless NVIS Antenna
- 43 Foot Antenna Installation – The Rising
- 43 Foot Vertical and Coax Switches
- 43 Foot Vertical Pops a U-Bolt
- 5 HF Band Hex Beam on Six Meters
- 5/8 Wave J-Pole vs. 1/2 Wave J-Pole EZNEC Shootout
- 75 Meter Turnstile Antenna
- 80 Meters for BigIR
- Adding 0.05 wavelength wire to EFHW antenna
- AHVD Winter Wonderland
- Airplane Navigation Receiver Antenna Balun
- Airspy YouLoop LF/MF/HF Möbius Receive Antenna
- Anatomy of a low frequency aviation radio beacon
- Antenna pattern plots: Good intentions vs. good data
- Antenna radiator decoupling stub flub?
- Assemble the 6m LFA Yagi
- Asy Hat Vertical Dipole
- BigIR vs. 43 Foot Antenna EZNEC Shootout Conclusions
- BigIR vs. 43 Foot Vertical Antenna @ 10 meters EZNEC Shootout
- BigIR vs. 43 Foot Vertical Antenna @ 15 meters EZNEC Shootout
- BigIR vs. 43 Foot Vertical Antenna @ 20 meters EZNEC Shootout
- BigIR vs. 43 Foot Vertical Antenna @ 40 meters EZNEC Shootout
- BigIR vs. 43 Foot Vertical Antenna @ 80 meters EZNEC Shootout
- Broadband Hexbeam at Field Day 2010
- Build this Vertical Portable HF Antenna
- Can a 2m J-Pole be used at 440?
- Choke Baluns
- Coax Velocity Factor in Baluns, Does it Matter? Part 1
- Coax Velocity Factor in Baluns, Does it Matter? Part 2
- Collinear 5/8 wave J-Pole vs. Collinear 1/2 wave J-Pole EZNEC Shootout
- Coplanar Loop Fed Array LFA Yagi-Uda Antenna
- Copper 6m Coplanar LFA Yagi-Uda
- Copper efficiency after weathering
- Copper J-Pole Antenna on Play Set
- Cutting Copper for 6m LFA Yagi
- Dallas Cowboys, DTV, Wife and Hex Beams
- Decibel hell & the reign of antenna gain pain
- Diamond Antenna NR770HBNMO with K515SNMO mobile antenna review
- Diamond CP22E Antenna Review
- Diamond NR770HBNMO vs. Comet M-24M
- Diamond X50 Antenna Measurements
- Dipole Generates Static in PL-259
- Displacement Currents
- DX Engineering supports AHVD antenna
- Effect of shields on ferrites
- EFHW HT antenna functions without additional counterpoise
- EFHW LNR Precision EF-10/20/40MKII Examination
- EFHW LNR Precision EF-10/20/40MKII Test Data
- EFHW transformer two ways
- Electrically isolated end-fed vs. center-fed dipole radiation
- Fair-Rite 2661480002 Type 61 Ferrite Slide-on Chokes
- Finding facts of Fair-Rite Ferrites
- Ground effect
- Ham Question: Coax Loss and Remote Tuner for 43 Foot Antenna
- Hatteras Ham Shack
- Have your J-Pole and ground it too
- Hex Beam Aluminum Hub by DXE
- Hexagonal (Hex) Beam Battle
- Hexbeam Gets a Spine
- HF AHVD on 6m – Practical?
- Hoverman TV Antenna Measurements
- HT Antenna Comparisons
- Improving the Super-J
- J antenna and variations thereof
- J Antenna Design Patent Grant
- J-Pole Antenna – Should I ground it?
- J-pole: Where a choke is no joke
- JOTA Antenna Need Not Be Fancy
- Jpole vs. Coaxial Dipole EZNEC Shootout
- Ladder Line the Old Fashioned Way
- Laird NMO Mobile Antenna Mounts
- Long HT Antennas May Harm HT Radios
- Low Profile Vertical HF Antenna
- Magnetic Mount Antennas Don’t Suck
- Mast Mountable Antenna Patent Application
- Mast Mountable J Antenna Patent Pending
- Mast Mountable J-Pole Antenna
- Max-Gain Systems Fiberglass for your Hex Beam
- Measuring Quarter Wave Coax Stubs using MFJ Analyzer
- N9TAX 2m Slim Jim Antenna Review
- Nelson Antennas 2m rollup antenna review
- New Choke Configuration for AHVD
- NMO Mobile Antenna Mount Options
- Not all mobile antennas are the same
- NVIS 80m with 160m Full Wave Loop is less than ideal
- NVIS Gain of Loop and Dipole vs. Height
- Of end-feds and feed-lines
- Of fields and feedpoints
- Priming Aluminum Antennas
- Radials and their far field effects
- Radials mitigate feedline and mast currents, tests reveal
- Relay Control Box for Turnstile Antenna
- Repeaters, Antennas & Trigonometry
- Roof-racking VHF antennas on SUV
- Runt radials
- Simulating the end-fed half-wave (EFHW) dipole antenna
- Simulations of Classic & Broadband Hexbeam – The Movie
- Slim Jim vs. Traditional J-pole Antenna
- SlimJIM and Antenna Gainflation
- Small Loop HF Antenna
- Small Loop HF Mobile
- Stud Finder as Copper Tape Finder in SteppIR
- Superbowl HDTV Antenna
- SWR of Several Mobile Antennas
- SWR vs. Return Loss
- The 43 foot vertical – The answer to everything?
- The Coaxial Dipole
- The dipole antenna, how industry defines it
- The J-Pole antenna is herewith fixed
- The limits of aluminum antenna tubing
- This Balun Chokes
- Use a loop if you can
- Vertical Dipole at Lighthouse
- VHF magmount vs. hole-mount performance comparison
- When antenna tilt matters
- Where a choke chokes
- Where quarter-wave radiator decoupling stubs work… and don’t work
- Why don’t hams like vertical dipole antennas?
- Wideband 80m Dipole
- Wolf River Coils – Silver Bullet vs. Silver Bullet Platinum 1000
Connectors
contesting
Digital Modes
- “Effective encryption” effectively debunked
- Air hockey and PSK31 don’t mix
- Comparing RTTY, PSK and MFSK
- Digital Modes Need Calibrated Soundcards
- EasyPal – Image Transfer Made Easy
- Exciting times in soft modem development
- Good APRS Information Web Site
- Olivia CQ Modes
- Packet Radio Reprise?
- Passing ARRL Field Day messages the easy way with packet radio
- PSK with no Interface
- Question: APRS Software
- The Navigator from US Interface – a First Look
- The need for 9600 bps AX.25
- Understanding digitization
- Winlink and Modems: When to not cross the streams
Electronics
EmComm
Installations
interfaces
Introspection
Lab Shootouts
Miscellaneous
- AHVD – End Caps come in bag of 20
- AHVD at Richmond Frostfest
- Berryville 2015
- Burt on Operators
- Copyrights, Designs and Intellectual Property
- Counting Kilowatt-Hours
- Demo of TDoA using the SDR.hu network
- For Sale Heathkit SB-102 with HB-23-A PS/Speaker
- Geo. Coordinate Transmission Efficiency
- Ham Question: Yeasu Manual wanted for c508a
- Help: How can I Migrate Microsoft Works 2004 Logs to New Program
- KG3V Ham Radio Blog
- Like us on Facebook
- LOTW Import gets around ADIF Mode Limits
- Review of DX Engineering BAL050-H05-A Balun
- Solar Energy PV Payback Period
- Using AM to explain the value of radio bandwidth
- Will the real PolyPhaser please stand up
- Win a repeater from Bridgecom
- WWV @ 25MHz?
- Young Attracted to PSK31
mobile
- Amateur Radio License Plates
- Antenna Measurements on Taurus 2m Whip
- Diamond Antenna NR770HBNMO with K515SNMO mobile antenna review
- Extreme NMO – Subaru, Silver and the 60″ Whip
- Fancy battery posts are not always better
- Guidelines on what constitutes distracted driving
- Ham Question: Kenwood TM-G707 Display Erratic
- How to win with HF mobile NVIS
- Low profile 2m/440 mobile installation
- NMO Through-Hole Mobile Antenna Installation
- SWR of Several Mobile Antennas
- Vehicular Power Bus – Hell on Earth?
NEC Shootouts
- 1/2 Wave vs. 5/4 Wave VHF EZNEC Shootout
- 1/4 Wave Monopole vs. 1/2 Wave J-Pole EZNEC Shootout
- 5/8 Wave J-Pole vs. 1/2 Wave J-Pole EZNEC Shootout
- BigIR vs. 43 Foot Vertical Antenna @ 10 meters EZNEC Shootout
- BigIR vs. 43 Foot Vertical Antenna @ 15 meters EZNEC Shootout
- BigIR vs. 43 Foot Vertical Antenna @ 20 meters EZNEC Shootout
- BigIR vs. 43 Foot Vertical Antenna @ 40 meters EZNEC Shootout
- BigIR vs. 43 Foot Vertical Antenna EZNEC Shootout
- Collinear 5/8 wave J-Pole vs. Collinear 1/2 wave J-Pole EZNEC Shootout
- Jpole vs. Coaxial Dipole EZNEC Shootout
News
power supply
- Alternate Power Bonus for Field Day
- APC UPS Compatible with Honda EU2000
- Battery Energy Density: Gel Cell
- Energizer lithium vs. alkaline batteries
- Field Day Power Topics
- Fuel Cap on Honda EU2000 Will Shut Off Generator
- Half Voltage Fan Cools Power Supply with Less Noise
- Honda Generator Hour Meter
- LiFePO4 – The New Normal?
- Two radios on one power supply cause problem
- Ugly World of Generator Power
Promoting
Propagation
Public Service
Radios
Reviews
Software
- ADIF Mode Missing PH and DIG
- Confirming Radio Mobile in the AT Golden Packet Attempt
- Higher Fidelity OpenWebRX 1.0.0
- Icom 746 & 725 Rig Control with N3FJP
- JL Logger – Logger for Java Run Time Environment
- N1MM and Default Conditions can lead to out of band TX
- Splitting One Serial Port to Multiple Applications