Microwave Society Building Equipment and Operating on · PDF fileBuilding Equipment and...
Transcript of Microwave Society Building Equipment and Operating on · PDF fileBuilding Equipment and...
![Page 1: Microwave Society Building Equipment and Operating on · PDF fileBuilding Equipment and Operating on 10 GHz ... Template for a 10 GHz feed horn for DSS offset dish. W5HN North ...](https://reader031.fdocuments.net/reader031/viewer/2022022500/5aa45dfa7f8b9a517d8bd017/html5/thumbnails/1.jpg)
W5HNNorth
Texas
Microwave
Society
NTMS
WWW.NTMS.ORG
Building Equipment and Operatingon 10 GHz
Bob Gormley WA5YWC
and
Al Webb W5RLG
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W5HNNorth
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Microwave
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NTMSA Little History
WWW.NTMS.ORG 2
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W5HNNorth
Texas
Microwave
Society
NTMS
WWW.NTMS.ORG 3
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W5HNNorth
Texas
Microwave
Society
NTMS
WWW.NTMS.ORG 4
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W5HNNorth
Texas
Microwave
Society
NTMS
WWW.NTMS.ORG 5
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Texas
Microwave
Society
NTMS
WWW.NTMS.ORG 6
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W5HNNorth
Texas
Microwave
Society
NTMS
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Basic Components
•Down East Microwave 10 GHz Transverter Kit
•2 meter I/F transceiver
•Relay and rigid coax
•Dish or Horn antenna
2 Meter Xcvr DEMI Xvtr
Relay
Dish Antenna
Rigid Coax
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Microwave
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2 Meter Multimode I/F Radio
• My choice is the ICOM IC-706. Affordable and readily available
• 10 Watts out on 2 meters, adjustable to 0.5 watts out
• Built-in keyer, Accessory jack for transceiver interface
• FT-817
• FT-857
• IC-202
• FT-290
• IC-251
• TS-700A
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W5HNNorth
Texas
Microwave
Society
NTMS
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DEMI Transverter Kit
Top View
Pipe Cap Filters
DC ControlBoard
Osc/multiplier
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W5HNNorth
Texas
Microwave
Society
NTMS
WWW.NTMS.ORG
DEMI Transverter Kit
Bottom View
Surface mountconstruction
144 MHz in/out
10 GHz in
10 GHz out
(10 mW)
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Texas
Microwave
Society
NTMS
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Dish Antenna
• 18 inch offset dish
• Readily available
• High gain typically 30 dB
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Texas
Microwave
Society
NTMS
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Low Noise Block Converter with integralFeedhorn (LNBF)
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Microwave
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Designing the New Feed
Template for a 10 GHz feed horn forDSS offset dish.
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Microwave
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WR90 Waveguide to Coax Transition
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Building the Feed Horn
Shielding from inside of anold computer monitor. Alsocould use K&S Metals,Altoids tin.
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Solder it all together
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Society
NTMS
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New Horn and Waveguide Transition
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Texas
Microwave
Society
NTMS
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Setting Correct Angle
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NTMS
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Adjustability
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NTMS
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Finding the Focal Point
Vertical Length (mm)
Horizontal Length (mm)
Dish Depth (mm)
Max Depth to BottomLength (mm)
Measure Dimensions
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Texas
Microwave
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NTMS
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W1GHZ Online Microwave Antenna Book
http://www.w1ghz.org/antbook/contents.htm
Software Page:
Run HDL_ANT.exe
Select “Offset Dish Calculations”
Enter measured dish dimension data
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Enter Dimensions
Frequency in MHz: 10368.1
Diameter of Large axis of dish in mm: 490
Diameter of small axis of dish in mm: 452
Depth of dish at deepest point in mm: 45
Distance from deepest point to bottom edge along large axis inmm: 218
Results
Focal length = 256 mm
The focal point of the dish is 255.98 mm from the bottom edge ofthe reflector and 452.68 mm from the top edge of the reflector.
The large axis is tilted forward 66.3 degrees above the horizontal.
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NTMS
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String and knot method to find phase center
453 mm
256 mm
66.3 degrees tilt
RF
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W5HNNorth
Texas
Microwave
Society
NTMSOctober 2007
WWW.NTMS.ORG 24
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Texas
Microwave
Society
NTMSMay 2011
WWW.NTMS.ORG 25
Douglass, KA2UPW Sun Umbrella Antenna
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Texas
Microwave
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NTMSW5RLG 10 GHz Rig
WWW.NTMS.ORG 26
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NTMSW5RLG at Pikes Peak, CO
WWW.NTMS.ORG 27
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Texas
Microwave
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NTMS
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2010 ARRL 10 GHz and Above Contest
I-20 near Ranger, TX looking east (EM02ni)
Contact with W5LUA at 227 km (141 miles) on SSB 59+
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Microwave
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NTMS
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Conclusion• Building a 10 GHz station is not difficult
• Parts are readily available online or athamfests.
• 10 GHz is one of the fastest growingmicrowave bands.
• North Texas Microwave Society offerssupport and welcomes newcomers to themicrowave amateur community.