Codan Radio Radio Repeater Systems Training Guide - Manual (Page 35)

RADIO REPEATER SYSTEM | TRAINING GUIDE
Chapter 3: Repeater System Equipment Page 27
SOLAR SIZING WORKSHEET
SITE NAME BRIDGE ARS DATA POINT LYTTON
AVERAGE YEARLY BRIGHT SUNSHINE HOURS (BSH) 1927
ADJUSTED (+ or - a +5 percent) TOTAL BSH 2023
AVERAGE PEAK HOURS PER DAY (total BSH x 0.0017) = B = 3.44
AVERAGE ANNUAL TEMPERATURE (at monitor point) c = +9
ADJUSTED FOR SITE (c - adiabatic lapse rate) +20 = C = 23.5
DUTY CYCLE (shown as a decimal, eg. 8% = .08) = dc = 0.08
TOTAL DAILY NORMAL OPERATING HOURS a = 9 h
TOTAL STANDBY CURRENT (24 x Rx(I)) = b = 2.0 Ah
TOTAL TX CURRENT (a x Tx(I) x dc) = c = 1.6 Ah
TOTAL DAILY REQUIREMENT (b + c) = r = 3.6 Ah
REPEATER OPERATING VOLTAGE V = 12.5 Volts
BATTERY TYPE Ni-Cad VOLTS PER CELL v = 1.2 Volts
NUMBER OF CELLS REQUIRED IN SERIES (V/v) = VI = 10 cells
ONE BANK OF CELLS WILL GIVE (100 / r) 28 DAYS OF STORAGE
CHARGE VOLTAGE PER CELL CV = 1.4 Volts
REVERSE CURRENT DIODE OR REGULATOR LOSS D = 0 Volts
NOMINAL PANEL VOLTAGE (from manufacturers data) = m = 14 Volts
PANEL O/P VOLT REQ’D (D+R+(VIxCV)+(0.004(C x m))) = L = 15.8 Volts
PANEL CURRENT (from man. power graph) at L volts = M = 1.9 A
MODULE CURRENT PER DAY (B x M) = M1 = 6.5 A
NUMBER OF PANELS REQUIRED = (r / M1) = 0.5 modules