International Telecommunication Union HQ
4U1ITU
4U/ITU
Resources, Files and Antenna Construction Library
A lightweight 10M2 2 Element 10m Delta Loop – build it! – Coming in 2023
Antenna Building Resources
• Antenna Building - Sourcing Aluminium Stock
• Antenna Building - Sourcing Pipe Clamps
• Antenna Building - Sourcing U-Bolts
• Antenna Building - Sourcing Stainless H'ware
• Antenna Building - Galvanic Corrosion
• Antenna Building - Preventing Galling
• Antenna Building - Making Super Sturdy Right-Angle Mounting Plates for Moxons
• Antenna Building - Quads - Securing Loop Wires Effectively to Spreader Ends
• Antenna Building - Sourcing Pipe Clamps
• Antenna Building - Sourcing U-Bolts
• Antenna Building - Sourcing Stainless H'ware
• Antenna Building - Galvanic Corrosion
• Antenna Building - Preventing Galling
• Antenna Building - Making Super Sturdy Right-Angle Mounting Plates for Moxons
• Antenna Building - Quads - Securing Loop Wires Effectively to Spreader Ends
‘Build Me’ – Baluns and Matching Devices
• 75ohm 1/4 wave Matching Transformer
• 28 to 50ohm Matching Transformer
• 12.5 to 50ohm Matching Transformer
• Ferrite Core 1:1 Choke Balun
• Ferrite Core 4:1 Balun Transformer
• Ferrite Core 9:1 Unun Transformer and End-Fed Sloping Wire Antenna for 160-10m
• Sourcing Cores for Baluns & Transformers
• Limitations of Coaxial Air-Coiled Chokes
• A Simple 6m Feedpoint Choke Using RG Mini8
• A Gamma Match - Match 'Z' to 50 ohms
• 28 to 50ohm Matching Transformer
• 12.5 to 50ohm Matching Transformer
• Ferrite Core 1:1 Choke Balun
• Ferrite Core 4:1 Balun Transformer
• Ferrite Core 9:1 Unun Transformer and End-Fed Sloping Wire Antenna for 160-10m
• Sourcing Cores for Baluns & Transformers
• Limitations of Coaxial Air-Coiled Chokes
• A Simple 6m Feedpoint Choke Using RG Mini8
• A Gamma Match - Match 'Z' to 50 ohms
Coaxial Cable and RF Connectors
Antenna Modelling
• LB Cebik [W4RNL] - The Antenna Guru's Guru!
• EZNEC - Friend or Foe?
• EZNEC Files to Download
• Download EZNEC Pro/2+ from W7EL
• EZNEC Tapered Wire Modelling - How to Build Accurate Delta Loops that Reflect Your Model
• AN-SOF V7 vs EZNEC Pro/2+ 'Model' vs
'Live Build' - Which is the more accurate?
• Why the old formula 1005/freq sometimes doesn't work for loop antennas.
• EZNEC - Friend or Foe?
• EZNEC Files to Download
• Download EZNEC Pro/2+ from W7EL
• EZNEC Tapered Wire Modelling - How to Build Accurate Delta Loops that Reflect Your Model
• AN-SOF V7 vs EZNEC Pro/2+ 'Model' vs
'Live Build' - Which is the more accurate?
• Why the old formula 1005/freq sometimes doesn't work for loop antennas.
Self Build Shack Projects
Other Projects and articles
Articles & Content Coming During 2024/5
• HF2500 Amp - PSU Strip Down
• HF2500 Amp - Plate Voltage Board Rebuild
• Home-build: 5Kw QRO 'Gainmaster' copy
• Home-build: 11m 5-Element OWA Yagi
• Home-build: 17m 2-Element Delta Loop
• Home-build: 6m 6-Element Delta Loop
• Home-build: 6m 4-Element Delta Loop
• Home-build: 10m 2-Element Delta Loop
Completed articles will be moved from the above section when finalised
• HF2500 Amp - Plate Voltage Board Rebuild
• Home-build: 5Kw QRO 'Gainmaster' copy
• Home-build: 11m 5-Element OWA Yagi
• Home-build: 17m 2-Element Delta Loop
• Home-build: 6m 6-Element Delta Loop
• Home-build: 6m 4-Element Delta Loop
• Home-build: 10m 2-Element Delta Loop
Completed articles will be moved from the above section when finalised
G0UIH – My QSL Collection
• NEW and updated for 2024
• My QSL Collection - 35 Years of Ham Radio
Disclaimer and Use of this Site
Antenna Projects for The Home Constructor
A Lightweight 10M6 6 element OWA Yagi – Click below to see how to build it
Antenna Related Projects
• As Simple as it Gets - Build a 2m VHF Dipole - Ideal for Novices
• Wide-band a 3-Element Yagi
• Build a 6m 2-Element Yagi
• A 6m 3 Ele Yagi Built Two Ways
• Matching with a Hairpin Match
• Match a Single Element Delta
• 0.66 v/f Coaxial Dipoles: There's no Such Thing as a Free Lunch
• A Triple 5/8th 2m Collinear. Ditch that Dreadful VHF 'White-Stick'
• A Lightweight 3 Ele 15m Yagi
• A SIRIO Gainmaster on Steroids
• 10 Element OWL VHF 2m Yagi
• G7FEK Multiband Wire for DX
• A 7 Element LPA for BandII FM
• A 5 Band Monster Quad by KG6B
• A 7 Elem't Vertical 2m OWA Yagi
• A 5 Element 2m 28-Ohm Yagi
• An 8 Element 2m OWA Vertical Yagi for extreme fringe areas
• A 10/11m 3 Element Short Boom Super Lightweight Yagi
• The G0UIH 10m 'Needlebender'. An 8 ele no-compromise 10m Yagi that'll cause a riot on the band!!!
• Wide-band a 3-Element Yagi
• Build a 6m 2-Element Yagi
• A 6m 3 Ele Yagi Built Two Ways
• Matching with a Hairpin Match
• Match a Single Element Delta
• 0.66 v/f Coaxial Dipoles: There's no Such Thing as a Free Lunch
• A Triple 5/8th 2m Collinear. Ditch that Dreadful VHF 'White-Stick'
• A Lightweight 3 Ele 15m Yagi
• A SIRIO Gainmaster on Steroids
• 10 Element OWL VHF 2m Yagi
• G7FEK Multiband Wire for DX
• A 7 Element LPA for BandII FM
• A 5 Band Monster Quad by KG6B
• A 7 Elem't Vertical 2m OWA Yagi
• A 5 Element 2m 28-Ohm Yagi
• An 8 Element 2m OWA Vertical Yagi for extreme fringe areas
• A 10/11m 3 Element Short Boom Super Lightweight Yagi
• The G0UIH 10m 'Needlebender'. An 8 ele no-compromise 10m Yagi that'll cause a riot on the band!!!
• NEW: A 20/17/15m 10 element Yagi with a single feedline. Our take on the Optibeam OB10-3W
Premier Delta Loop Projects
• Analysis: All-band Delta 80-2m
- Full build data and feed options
• Build a 2 Element Delta for 15m
• Build a 4 Element Delta for 11m
• A Dual Band 10 and 15m High Performance Delta Loop • A 2 Element Delta Loop for the 4m [70MHz] Band
- Full build data and feed options
• Build a 2 Element Delta for 15m
• Build a 4 Element Delta for 11m
• A Dual Band 10 and 15m High Performance Delta Loop • A 2 Element Delta Loop for the 4m [70MHz] Band
• NEW: A 5 Element Super Heavy Duty Delta Loop for the 11m Band - A 'Vortex Antennas' Original
VHF and UHF Antenna Design
Solar-Terrestrial Data