Norwegian Hill Repeater, Sponsored by the Prairie Dog Amateur Radio Club
Installed April, 22, 2015
Pictures taken by N0AIE, W0EJ, K0WIU and W0SD
NORWEGIAN HILL REPEATER INSTALLATON CREW
Left to Right Everett, N0AIE, Bill-K0WIU, Ed W0SD, Bruce K8UDH
W0SD Ed on Pole
W0SD Ed installing antenna mounting clamps
Norwegian Hill Repeater
UHF link Corner Reflector VHF DB-222 Repeater Antenna
View to Southwest looking over the Missouri River from Norwegian Hill
Ed W0SD Installing VHF antenna
Ed W0SD Installing UHF corner Reflector Repeater building and pole
View to Northeast toward Yankton from Norwegian Hill What a stretch!!!
You have to trust your belt Wonderful to be down after 7 hours on the pole
Coming down is harder than going up in some ways but not as physically demanding
UHF controller in gray box designed and constructed by Fred WA0GMH. Install 5-21-2015, Fan is turned on and off with a thermal switch on the UHF SM-50 Motorola heat sink.
Mike KE0CLO Bill W0EJ, wonderful job of wiring!!!
PDARC Norwegian Hill Repeater (8.31 southwest of Springfield, SD) Overlooks Missouri River
147.210+ with a tone of 146.2. The deviation is set for 5 khz.
33 miles from the Yankton repeater at an azimuth of 257 degrees
Azuimth from NWH to Yankton repeater is 77 degrees
ASL of 1662 feet
65 foot pole so base of VHF antenna 1727 feet ASL(Highest elev. Looking N, NE, E and E-SE for many miles)
SE, S, W & NW coverage seems to be quite solid for 30 miles.
42 degrees 48.520 minutes N
98 degrees 2.896 minutes W
6 dbd cardioid antenna pattern
25 watts out of TKR-750, after duplexer loss and heliax loss it is 17 watts at the base of the antenna so it is 68 watts ERP. Feed line loss is 1 watt.
Receiver sensitivity is .45 uv, meets spec’s
DB-222 new DB-Products commercial antenna and new galvanized clamps
DC ground #6 solid copper from antenna to pole ground and two ground rods.
4 grounding kits on VHF heliax and 1 grounding kit on UHF heliax each where it leaves the pole
TKR-750 Version 2 SN709000076, used but recent production, meets spec’s & is latest version
7/8″ heliax 50 feet & two connectors, used checked for reflected and power loss, meets spec’s
TX-RX Duplexer Model 26-37-02A, SN29157-A Vari-notch 144-174 MHz, meets spec’s
Ground wire, connectors and ground rod
SM-50 UHF link radio
Corner Reflector UHF (10Dbd) DB products, feed with 7/8″ heliax at 50 feet, no reflected power
Samlex sec-1230UL smart charger/power supply 30 Amp
Battery cables and lugs
2 Sam’s Club Deep Cycle Golf Cart 6 vdc batteries(GC2) 208 AH @ 20 Amp.
CW ID W0OJY/R
Courtesy beep on carrier drop which takes 2 seconds
3 minute timer
Battery backup is automatic, when on battery back up there is a beep every 60 seconds when the repeater is transmitting.
-22 F to 140 F is repeater temperature operating range with fan set for thermostat control
1 amp on receive
13 amp TX-RX
Estimated 4 days on battery back up on receive (To 60% battery discharge)
Estimated 2 days on battery backup TX-RX (To 60% battery discharge)
TKR-750 is set for 10.7 volts minimum voltage
UHF link radio and controller will be on battery back up
Repeater building appears to be rodent proof, sealed against rain and snow.
PDARC repeater on own 30 amp circuit breaker
Trustee for W0OJY/R is Fred WA0GMH. Fred is designing and building the controller which will link Norwegian Hill and the Yankton PDARC repeaters together. Ed W0SD donated the equipment for NWH and did all the tower work.