Embedded Files
Check out the You Tube Field Day Video for the SJRA
Build a Delta Loop for 10 Mtrs for POTA
Build a Delta Loop for 10 Mtrs for POTA
With all of the recent activity on 10 meters, this week I am building a 10 mtr Delta loop to mount on a push up pole during my next Parks on the Air Activation
These plans come direct from M0AWS , follow his page at the link here
https://m0aws.co.uk/?page_id=885
Additional information can be found here on Delta Loops
What is the formula for Delta loop antenna?
The formula “1005 / Freq (MHz)” is used to calculate the size of this inverted Delta Loop using either, a 4:1 balun for a multi-band antenna, or a 75ohm quarter wave section from the feed point to the 50 ohm feeder for mono-band operation."
10M DELTA LOOP
10M DELTA LOOP
This is a 10m band delta loop design that I’ve put together as requested by a member of the Wire Antennas for HF group on Facebook.
The 10m band delta loop follows exactly the same design principles as all the other delta loop designs I’ve already put on the website. They are designed such that they present a 50 ohm impedance at the feed point and thus have no requirement for complex impedance matching circuits/transformers.
10m Band Delta Loop Antenna Wire View
The dimensions for the antenna are as follows:
Wire 1 – Horizontal exactly 1m above the ground for its entire 5m length.
Wires 2 & 3 are exactly 3.2m long each with the top being 3m above the ground.
10m Band Delta Loop 3D Far Field Plot
The 3D far field plot shows a typical delta loop radiation pattern with the maximum radiation through the loop and a deep null in the centre.
10m Band Delta Loop 2D Far Field Elevation Plot
The 2D elevation plot shows that the antenna will give a maximum gain of 6.4dBi at 10 degrees, ideal for chasing those elusive DX stations.
The SWR plot shows that the antenna will have a fairly wide bandwidth and match to 50 ohm coax extremely well. The antenna is designed to be fed in one of the lower corners via a 1:1 balun for best results.
10m Band Delta Loop Antenna SWR curve
Summary:
Total Wire Length: 11.4m
Horizontal Wire Length: 5m @ 1m above ground
Diagonal Wire Lengths: 3.2m
Wire Dia: 2.5mm
Height at Centre: 3m
Feed Type: 1:1 Balun in bottom corner (Can use coax if necessary)
Impedance: 50 Ohm
SWR: <1.5:1 at resonance
10M DELTA LOOP
10M DELTA LOOP
This is a 10m band delta loop design that I’ve put together as requested by a member of the Wire Antennas for HF group on Facebook.
The 10m band delta loop follows exactly the same design principles as all the other delta loop designs I’ve already put on the website. They are designed such that they present a 50 ohm impedance at the feed point and thus have no requirement for complex impedance matching circuits/transformers.
10m Band Delta Loop Antenna Wire View
The dimensions for the antenna are as follows:
Wire 1 – Horizontal exactly 1m above the ground for its entire 5m length.
Wires 2 & 3 are exactly 3.2m long each with the top being 3m above the ground.
10m Band Delta Loop 3D Far Field Plot
The 3D far field plot shows a typical delta loop radiation pattern with the maximum radiation through the loop and a deep null in the centre.
10m Band Delta Loop 2D Far Field Elevation Plot
The 2D elevation plot shows that the antenna will give a maximum gain of 6.4dBi at 10 degrees, ideal for chasing those elusive DX stations.
The SWR plot shows that the antenna will have a fairly wide bandwidth and match to 50 ohm coax extremely well. The antenna is designed to be fed in one of the lower corners via a 1:1 balun for best results.
10m Band Delta Loop Antenna SWR curve
Summary:
Total Wire Length: 11.4m
Horizontal Wire Length: 5m @ 1m above ground
Diagonal Wire Lengths: 3.2m
Wire Dia: 2.5mm
Height at Centre: 3m
Feed Type: 1:1 Balun in bottom corner (Can use coax if necessary)
Impedance: 50 Ohm
SWR: <1.5:1 at resonance
10m Band Delta Loop Antenna Wire View
The dimensions for the antenna are as follows:
Wire 1 – Horizontal exactly 1m above the ground for its entire 5m length.
Wires 2 & 3 are exactly 3.2m long each with the top being 3m above the ground
The SWR plot shows that the antenna will have a fairly wide bandwidth and match to 50 ohm coax extremely well. The antenna is designed to be fed in one of the lower corners via a 1:1 balun for best results.
10m Band Delta Loop Antenna SWR curve
The 2D elevation plot shows that the antenna will give a maximum gain of 6.4dBi at 10 degrees, ideal for chasing those elusive DX stations.
.The 3D far field plot shows a typical delta loop radiation pattern with the maximum radiation through the loop and a deep null in the centre
These plans come direct from M0AWS , follow his page at the link here
https://m0aws.co.uk/?page_id=885
Page updated
Google Sites
Report abuse