Mt. Fairplay Repeater
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Click on each picture to get the full graphic image. 
(they should have already loaded and should display very quickly) 
Mt. Fairplay 444.700 MHz, 103.5 Hz PL
 installed Feb 5, 1997 by NL7XH 
freq change Oct 24, 1998 by NL7XH & WL7VO
Fairplay Oct 24, 1998 Fairplay Oct 24, 1998 Left:. Dick, WL7VO at the Fairplay Repeater, Oct 24, 1998 

Right: Rim ice on the Mt. Fairplay repeater site
photos by NL7XH
Fairplay Oct 24,1998
Fairplay  Oct 24, 1998
Left:. Broken Diamond X3200 at Fairplay

Right: Replacement 4 element cushcraft for 220 MHz link to Dot Lake
Fairplay Oct 24, 1998
Fairplay Oct 1998
Left:. Replacement Diamond X50A for 440MHz repeater

Right: KL7XO repeater in the rack, click it for enlarged photo and diagram
Fairplay Oct 24, 1998
Fairplay Oct 24, 1998
Left:. Showing the old chassis with the Kenwood TH79 crossband handheld

Right: The backside of the Fairplay repeater.  Click for enlarged photo and diagram
224 MHz Link - Path Profile
not avalible Path Profile
 
 

Above: Path profile, Mt. Fairplay to Dot Lake. (already loaded)

Left: Map showing path between Mt. Fairplay and Dot Lake 
BIG FILE: 527x1637 pixels, 335K bytes not yet loaded.
224 MHz Link - Path Loss Calculation
Fairplay to Dot Lake Dot Lake to Fairplay
Elevation antenna A (m) 671 Dot Lake 671 Dot Lake
Elevation antenna B (m) 1688 Fairplay 1688 Fairplay
Elevation obstruction (m) 975 Triden 975 Triden
Distance A to B (km) 91 Dot Lake to Fairplay 91 Dot Lake to Fairplay
Distance A to obstruction (km) 23 Dot Lake to Triden 68 Triden to Fairplay
frequency (MHz) 224 224
Theta (rad) 0.0081 0.0081
1.30 1.30
defraction loss (dB) 15.74 Triden 15.74 Triden
free space loss (dB) 118.65 Dot Lk to Fairplay 118.65 Fairplay to Dot Lk
TOTAL PATH LOSS (dB) 134.40 defraction + free space 134.40 defraction + free space
224 MHz Link - Fade Margin Calculation
Dot Lake to Mt. Fairplay Mt. Fairplay to Dot Lake
Tx power (watts) 20.00 Dot Lake 25.00 Fairplay
Tx power (dBm) 43.01 Dot Lake 43.98 Mt. Fairplay
tx coax (dB) -2.80 80'*3.5dB/100' -2.80 80'*3.5dB/100'
tx ant gain (dBi) 7.20 Cushcraft 224WB 7.20 Cushcraft 224WB
rx ant gain (dBi) 7.20 Cushcraft 224WB 7.20 Cushcraft 224WB
rx coax (dB) -2.80 80'*3.5dB/100' -2.80 80'*3.5dB/100'
system gain (dBm) 52.81 52.78
TOTAL PATH LOSS (dB) 134.40 from above 134.40 from above
rx sens (dBm) -110.00 (20dB S+N/N) -110.00 (20dB S+N/N)
FADE MARGIN (dB) 27.41 rx sens + system gain - path loss 
10dB for 90% reliablity 
20dB for 99% reliablity 
30dB for 99.9% reliablity 
40dB for 99.99% reliablity
28.38