Station Design for High Performance: Switching, Filters, Triplexers, and Stubs K7WA - February 11, 2014
Station Design for High Performance:
Feb 23, 2016
Station Design for High Performance:. Switching, Filters, Triplexers , and Stubs. High Performance (The Competitive Edge). Innovations to: Allow Automatic Bandswitching Protect Receiver Front Ends Reduce Interference Reduce Operator Errors. Switching. Band Coding (K3). - PowerPoint PPT Presentation
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K7WA - February 11, 2014
Station Design for High Performance:Switching, Filters, Triplexers, and Stubs
K7WA - February 11, 2014
High Performance(The Competitive Edge)
Innovations to:• Allow Automatic Bandswitching• Protect Receiver Front Ends• Reduce Interference• Reduce Operator Errors
K7WA - February 11, 2014
K7WA - February 11, 2014
Switching
K7WA - February 11, 2014
Band Coding (K3)Band Outputs (BAND0-BAND3):BAND0-3 provide band selection signals. With CONFIG:KIO3 set to NOR, the BAND0-3 outputs are mapped based on the selected HF-6 mband as shown below.
Band BAND3 BAND2 BAND1 BAND0
160 m 0 0 0 180 m 0 0 1 060 m 0 0 0 040 m 0 0 1 130 m 0 1 0 020 m 0 1 0 117 m 0 1 1 015 m 0 1 1 112 m 1 0 0 010 m 1 0 0 16 m 1 0 1 0
K7WA - February 11, 2014
K7WA Antenna SwitchingRadio
(Elecraft K3)
Decoder(W9XT BCD 10)
Relays(Top Ten)
80 M Vertical(Hustler 5BTV)
40 M Inverted Vee
Triband Yagi(Mosley Mini)
Antenna Tuner(Viking Matchbox)
K7WA - February 11, 2014
Filter Types
Roofing Filter DSP FilterHigh Pass FilterLow Pass FilterBand-stop FilterBand Pass FilterNotch Filter
“A filter is a common linear stage in radio equipment. Filters arecharacterized by their ability to selectively attenuate certainfrequencies in the filter’s stop band, while passing or amplifyingother frequencies in the passband.”
K7WA - February 11, 2014
Bandpass Filter Plots
K7WA - February 11, 2014
Hamation Switched BPF
K7WA - February 11, 2014
VP6DX Notch Filter
K7WA - February 11, 2014
Triplexer
K7WA - February 11, 2014
K7WA - February 11, 2014
N7PP Field Day (CW)
Station 120 M
Station 215 – 80 M
Station 310 – 40 M
Triplexer Tri BandYagi
80 MDipole
40 MYagi
BPF
BPF
BPFBPF
BPF
K7WA - February 11, 2014
Radio 1 Radio 2
SwitchableBandpass Filter
SwitchableBandpass Filter
SixPak1015204080
160
ManualCoax
Switch
6 Meter
15-20 Dipole
10-15-20 Vert
160 Inv L
TriPlexer 10-15-20 Yagi
40 M Yagi
80 M Inv Vee
KØAD Switching(RF Path)
K7WA - February 11, 2014
Radio 1 Radio 2
SwitchableBandpass Filter
SwitchableBandpass Filter
SixPak1015204080
160
ManualCoax
Switch
6 Meter
15-20 Dipole
10-15-20 Vert
160 Inv L
TriPlexer 10-15-20 Yagi
40 M Yagi
80 M Inv Vee
KØAD Switching
InterfaceBox
SixPakSwitch
Auto/ManualSwitch
Band Decoder 1 Band Decoder 2
To PC To PC
K7WA - February 11, 2014
Stubs
K7WA - February 11, 2014
Radio 1 Radio 2
SwitchableBandpass Filter
SwitchableBandpass Filter
SixPak1015204080
160
High Power Example with Stubs
InterfaceBox
SixPakSwitch
Auto/ManualSwitch
Band Decoder 1 Band Decoder 2
To PC To PC
Amplifier 1 Amplifier 2
Stub
Stub
Stub
10 M Ant
20 M Ant
80 M Ant
Stub
Stub
Stub
15 M Ant
40 M Ant
160 M Ant
K7WA - February 11, 2014
Station Design for High PerformanceReferences:
International Radio: www.inrad.netTop Ten Devices: www.qth.com/toptenHamation (K7MI): www.hamation.comArray Solutions (WX0B): www.arraysolutions.comDunestar: www.dunestar.comUnified Microsystems (W9XT): www.unifiedmicro.commicroHAM: www.microham-usa.com4O3A: www.4o3a.comVP6DX Receive Antennas:
www.ncjweb.com/200807NCJVP6DXreceiveantenna1.pdfNCCC: (Band-Pass Filters: JUG March 2013) www.nccc.ccTCDXA: www.tcdxa.orgYCCC: www.yccc.orgPVRC: www.pvrc.orgQST: Stubs (Nov. 2004, p. 61), Triplexer (June 2010, p. 37, June 2012, p. 54)
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