Month: September 2016

1. Distance

• 216 ft house to trailer
• 72 ft trailer to tower base
• 74 ft base to tower top + 6 ft wrap allowance = 80 ft base to antenna

2. Cable Types

2.1 Initial Cables

1. HF transmit coax house to tower base.  335 ft.:  Low loss 50 ohm with >3 kW power capability.  Should be direct burial.  (Ordered 1/2″ Heliax LDF4-50A with PL-259 connectors)
2. HF transmit coax tower base to antenna, 80 ft:  Low loss 50 ohm flexible with > 2 kW power.
3. HF antenna rotor, 415 ft total:  4 wires (2 large wires for motor and 2 smaller wires for rotation sensor counter).  Run from house to tower base should be direct burial. (cable in conduit)  Purchased:Wireman part # 305 Rotor cable 2×12 and 2×16 Quantity 500 ft  @ 0.715 / ft = 357.50
4. Tower raise/lower control, 70 ft trailer to tower base: 6 wires: Direct burial.  (cable in conduit)
5. 120 vac extension cord, 50 ft, from power pedestal to tower base for tower raise/lower.
6. Ethernet cat 6 direct burial cable 216 ft from house to trailer for computer data and control.  (cable in conduit)
7. 2nd low-loss 50 ohm coax house to trailer, 216 ft.  Direct burial.  For future expansion, but put into trench initially due to difficulty in pulling big/stiff cable at later stage.  Possibly used to feed HF wire antennas.  (Ordered 1/2″ Heliax with type N connectors)

2.2 Future Cables in House-to-Trailer Conduit

1. VHF/UHF moderate loss (~10 db) house to trailer 270 ft:  Assumes Linear amp/LNA combo is either in trailer or mounted at antenna with transceiver in house.
2. Many-conductor rotor cable for Az/El control of VHF/UHF antennas (or control may be via ethernet from house to trailer)
   

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3. TBD timing cable(s).  Possibly moderate loss @ 10 MHz.

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   TBD control of Microwave antenna Az-El

5. TBD Coax house to trailer for use of microwave gear with moderate loss at TBD IF frequency.

3. Coax notes

4. Sources