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KRXI DT CH.44 install @ Peavine Pk. Reno, NV.
This job started with a huge amount of measuring the top 60' of the tower. The engineers at Dielectric needed to configure the KXRI CH.44
TFU-24DSB-J digital antenna with a 3° downtilt and a 1° skew towards the west. The tower is a 150' LeBlanc 4 leg series. When the antenna
installation was in progress only a very minor adjustment to the antenna mount structure was needed, an additional spacer block. This was
needed to maintain the correct spacing between two of the antenna sections, (last photo in table). Kudos to the engineers at Dielectric. From
what I was told from Matt the Eng. @ Dielectric is that they had a heck of a time w/ this configuration and it wouldn't break their hearts if
there wasn't another face mount like this in their lifetime!
The antenna install was the easy part.
All the Dielectric 4" hardline support including the 200 + lb power divider support was field fabricated. There was no pre-assembled support
kit from Dielectric. All brackets for the spring hangers were carefully measured, cut, and drilled for the 100' of tower portion of the
transmission line, the Icebridge portion was 200' long and 50 - 60 ' portion inside the transmitter room.
There are three elevation changes throughout the 360' of transmission line including the vertical up the tower. All in all there are 6 elbow
complexes 3 of which compensate for the elevation. There were 5 field cuts w/ the silver solder. The final VSWR was 1:06
The Power Divider was supported using 5/8" galvanized threaded rod, this makes it easily adjustable for any maintenance work. The support
structure was all field fabricated in place.
There are 3 jumpers overall from the divider. Two are 2 1/4" & one 3" - all are phased. These are supported using Microflect cushions. It took a
little bit of planning for the routing of the jumpers having to consider falling tools/ice, 100+ MPH storms during winter, etc. Everything is pretty
well tucked in.
The overall length of the project was about 5 weeks with a 4 man crew and just beat the first Winter storms by 1 week. Only 1 leak was
detected not at our field cut & welds but by a factory weld at the tuning stub at "C" antenna.
Oct - Nov. 2002
This job started with a huge amount of measuring the top 60' of the tower. The engineers at Dielectric needed to configure the KXRI CH.44
TFU-24DSB-J digital antenna with a 3° downtilt and a 1° skew towards the west. The tower is a 150' LeBlanc 4 leg series. When the antenna
installation was in progress only a very minor adjustment to the antenna mount structure was needed, an additional spacer block. This was
needed to maintain the correct spacing between two of the antenna sections, (last photo in table). Kudos to the engineers at Dielectric. From
what I was told from Matt the Eng. @ Dielectric is that they had a heck of a time w/ this configuration and it wouldn't break their hearts if
there wasn't another face mount like this in their lifetime!
The antenna install was the easy part.
All the Dielectric 4" hardline support including the 200 + lb power divider support was field fabricated. There was no pre-assembled support
kit from Dielectric. All brackets for the spring hangers were carefully measured, cut, and drilled for the 100' of tower portion of the
transmission line, the Icebridge portion was 200' long and 50 - 60 ' portion inside the transmitter room.
There are three elevation changes throughout the 360' of transmission line including the vertical up the tower. All in all there are 6 elbow
complexes 3 of which compensate for the elevation. There were 5 field cuts w/ the silver solder. The final VSWR was 1:06
The Power Divider was supported using 5/8" galvanized threaded rod, this makes it easily adjustable for any maintenance work. The support
structure was all field fabricated in place.
There are 3 jumpers overall from the divider. Two are 2 1/4" & one 3" - all are phased. These are supported using Microflect cushions. It took a
little bit of planning for the routing of the jumpers having to consider falling tools/ice, 100+ MPH storms during winter, etc. Everything is pretty
well tucked in.
The overall length of the project was about 5 weeks with a 4 man crew and just beat the first Winter storms by 1 week. Only 1 leak was
detected not at our field cut & welds but by a factory weld at the tuning stub at "C" antenna.
Oct - Nov. 2002
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