MICROWAVE LINK DESIGN COMPUTATION

ITEM 1: TERMINAL SITE LOCATIOON

SITE NAME LONGITUDE LATTITUDESITE 1SITE 2

ITEM 2: SITE DESCRIPTION

A. ELEVATIONB. POPULATIONC. LAND AREAD. NO. OF BARANGAYE. MEAN TEMPERATUREF. MAXIMUM TEMPERATUREG. MEAN HUMIDITYH. PRECIPITATION AMOUNTI. MEAN WIND SPEEDJ. MAXIMUM WIND SPEEDK. INDICATOR FOR OCCURENCE OF RAINL. INCICATOR FOR OCCURENCE OF THUNDERM. GEOGRAPHY & CLIMATEN. IINFRASTRUCTURESO. INDUSTRY AND COMMERCEP. POWER AND WATER SUPPLYQ. TRANSPORTATIONR. INVESTMENT AREAS AND LIVELIHOOD

ITEM 3: AZIMUTH and PATH LENGTH

4. Antenna Gain …………………………………………………………………………

5. Free Space Loss ………………………………………………….…….……………

6. Received Signal Level …………………………………………………………….

RSL = Po + AGTx+ AGRx- CLTx- CLRx- WLTx- WLRx – FSL

For Low Frequency Band and High Frequency Band for both sites

PATH PROFILE DATA SHEET

7. Rain Loss

CCIR/ITU-R Recommendation 530 rain attenuation

For Low Frequency Band and High Frequency Band for both sites

Item 8:Fade Margin (FM)FM = RSL –Rx Threshold

Note:Receiver Threshold is based from the data specifications

Item 9: Reliability = [1-µndp/ Ifd] x 100 %

where:µndp= non-diversity annual out gage probability for a given pathµndp= 2.5abfd3(10-FM/10)(10-6)

Ifd= frequency diversity improvement factorIfd= 1/12 x 0.02 x 10FM/10

where:a = roughness factora = 4, for very smooth terrain, over water, flat deserta = 1, for average terrain with some roughnessa = ¼ or 0.25, for mountainous, very rough or very rough terrainb = factor to convert a worst month probability to an annualprobabilityb = 0.5, for hot, humid coastal milesb = 0.25, for normal, interior temperature or sub-arctic areab = 0.125, for mountainous or very dry but non-reflective areasf = operating frequency, GHzD = path length, miles

FM = fade margin