a 134ghz dxpedition to england - freemillimeterwave.free.fr/g4fre134g.pdf · north texas microwave...
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![Page 1: A 134GHz Dxpedition to England - Freemillimeterwave.free.fr/G4FRE134g.pdf · North Texas Microwave Society History NTMS 1. Had the first UK QSO on 145GHz in 2001 2. 145GHz band now](https://reader034.vdocuments.site/reader034/viewer/2022042217/5ec1e18c3faf624ca8654e5d/html5/thumbnails/1.jpg)
W5HNNorth
Texas
Microwave
Society
NTMS
A 134GHz Dxpedition to England
Meg Robinson N2NQI, M0FRE Dave Robinson WW2R, G4FRE
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W5HNNorth
Texas
Microwave
Society
NTMSHistory
1. Had the first UK QSO on 145GHz in 2001
2. 145GHz band now lost in UK, but have now got 134GHz
3. Challenge to try for the 1st 134GHz QSO
4. Acquired an apartment in IO82UC with EXCELLENTtakeoff to East. NO takeoff to West.
5. Started building gear after being inspired at MUD 2005
6. Gear not finished by Xmas UK visit, so next chance was to try on my “Birthday” trip to England in February
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W5HNNorth
Texas
Microwave
Society
NTMSM0FRE QTH
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W5HNNorth
Texas
Microwave
Society
NTMS3D view
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W5HNNorth
Texas
Microwave
Society
NTMSTakeoff West
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W5HNNorth
Texas
Microwave
Society
NTMSTakeoff East
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W5HNNorth
Texas
Microwave
Society
NTMSPath IO82UC to IO82XC
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W5HNNorth
Texas
Microwave
Society
NTMS134GHz Rx Block Diagram
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W5HNNorth
Texas
Microwave
Society
NTMS134GHz TX Block diagram
Note that the PLL reference is the same between RX and TX, only the PLL programming alters
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W5HNNorth
Texas
Microwave
Society
NTMSOriginal DB6NT 145G Xverter
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W5HNNorth
Texas
Microwave
Society
NTMSModified Xverter for 134G
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W5HNNorth
Texas
Microwave
Society
NTMSVerticom Brick
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W5HNNorth
Texas
Microwave
Society
NTMS52.5MHz REFERENCE
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W5HNNorth
Texas
Microwave
Society
NTMSSchedule
• Feb 16: Arrive at apartment. Hook up z3801 reference, start survey. Suitable condx
• Feb 17: Suitable condx. Z3801 still locking• Feb 18: GPS survey completes in evening; (west
blockage caused slowness). Suitable condx• Feb 19: Early thick fog! Go for scenic coffee.
Watch OlympicsFog Clears 2100z. QSO at 2244.Temp -3.5C!
• Feb 20: go to Airport!
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W5HNNorth
Texas
Microwave
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NTMSSummary
• M0FRE IO82UC 158m ASLIC202 + XVERTER. GPS 10MHz REF. WR8 HORN
• G4FRE/P IO82XC 61m ASLFT817+XVERTER. 10MHz Rb REF. 0.25m dish with WR8 Cassegrain feed. Dish aligned using telescopic sight. (M0FRE located alongside a 10th century Priory which is illuminated at night.)
QSO COMPLETED AT 2244 ON 19 FEB. 539/529 REPORTS. 17.73km
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W5HNNorth
Texas
Microwave
Society
NTMSReferences
145GHz mixer• Dubus Technik IV