Norwegian Hill Repeater, Sponsored by the Prairie Dog Amateur Radio Club


Installed April, 22, 2015

Pictures taken by N0AIE,  W0EJ, K0WIU and W0SD

The Crew_Everett_Bill_Ed_Bruce-4-22-15 (640x427)


Left to Right Everett, N0AIE, Bill-K0WIU, Ed W0SD, Bruce K8UDH

Securing the Heliax UHF Line-01_4-22-15 (640x427)

W0SD Ed on Pole

Preparing the Antenna Mount-05_4-22-15 (640x427)

W0SD Ed installing antenna mounting clamps

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Norwegian Hill Repeater

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UHF link Corner Reflector                                       VHF DB-222 Repeater Antenna

NWH3-4 NWH View to the SW-02_4-22-15 (640x427)

View to Southwest looking over the Missouri River from Norwegian Hill


Mounting the Antenna-02_4-22-15 (640x427)

Ed W0SD Installing VHF antenna




Mounting the UHF Link Antenna-02_4-22-15 (640x427) NWH Repeater Site-04_4-22-15 (427x640)

Ed W0SD Installing UHF corner Reflector         Repeater building and pole

NWH View To the NE-01_4-22-15 (640x427) Ed Heading Up The Pole-15_4-22-15 (455x640)

View to Northeast toward Yankton from Norwegian Hill        What a stretch!!!

Ed Heading Up The Pole-14_4-22-15 (640x427) Ed Heading Up The Pole-01_4-22-15

You have to trust your belt                       Wonderful to be down after 7 hours on the pole

Ed Coming Down the Pole-02_4-22-15 (576x640) 123 (480x640)Battery

Coming down is harder than going up in some ways but not as physically demanding


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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.


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.