K3NA loop array - Kkn.net

105 Pages·2009·5.8 MB·English

Loop Array

Runs Circles Around

The Beverage
V1 2009 May 05 —K3NA slide 1
What to remember?
K3NA 3-loop array:
• Low-band RX antenna
o 160m & 80m
o Ins ensitive to out-of-band signals
o To lerates wide range of ground conditions
• Comp ared to optimized, full-size beverage:
o Equal or better performance
o < 1/3rd space
• Work s well “o ut of the box”
o ~ 1 day assembly
o Co mplex lab tools not required

V1 2009 May 05 —K3NA slide 2
Progress report:

K3NA loop array
V1 2009 May 05 —K3NA slide 3
Agenda
• Problem
• Ex isting alternatives
• Ne w approach
• Im plementation
• Re sults
• Du al-band operation
• Di versity reception
• Va riations
• Fu ture research
• Su mmary

V1 2009 May 05 —K3NA slide 4
Problem
RX antenna:
• Freqs:
o 160m DX
o 19 00-1920 kHz (“dragon” backup)
o 80 m CW
o 75 m SSB
• Beam width: max ~60°, reversible

V1 2009 May 05 —K3NA slide 5
NA & Europe
Problem
Asia
NA
long path

V1 2009 May 05 —K3NA slide 6
Problem
RX antenna:
• Freqs:
o 160m DX
o 19 00-1915 kHz (“dragon” backup)
o 80 m CW
o 75 m SSB
• Beam width: max ~60°, reversible
• In sensitive to local earth

V1 2009 May 05 —K3NA slide 7
Problem
V1 2009 May 05 —K3NA slide 8
Problem
RX antenna:
• Freqs:
o 160m DX
o 19 00-1915 kHz (“dragon” backup)
o 80 m CW
o 75 m SSB
• Beam width: max ~60°, reversible
• In sensitive to local earth
• Ea sy assembly; minimal on-site adjustment

V1 2009 May 05 —K3NA slide 9
Agenda
• Problem
• Ex isting alternatives
• Ne w approach
• Im plementation
• Re sults
• Du al-band operation
• “T o Do” list
• Su mmary

V1 2009 May 05 —K3NA slide 10