1. Basics for Emergency Power Presented by Larry Lovell – N7RGW
Back Up Power
Basics for Emergency Power
Presented by Larry Lovell – N7RGW

2. What You Need To Know Determine Power Needed (Current and Voltage)AC
How long do you need to supply emergency power
Battery – type, current capacity (Amp Hours)
DC Power Distribution Method
Method to recharge Battery
Charger – recharge battery from house power.
Solar – charge battery
Generator – charge battery and supply AC power
Wind – charge battery
Inverter – converts DC to AC

3. You Should Start With Back – Up Batteries for your Hand Held Radio
Some method of keeping batteries charged
Supply Energy to other Amateur Equipment
Power for Lighting
Power for Heat or Cooling

4. Stand By Power - UPS
Everyone should have one of these for your computer. But can also be used as a backup for HAM Radio. Add additional batteries and it will last longer.
Each UPS contains:
A Battery
An Inverter (DC to AC)
EMI/RFI line noise filters
Full-time lightning protection
AC Sockets
Rating such as 550 VA/330W can tell you the maximum power that can be supplied.
It will also give an estimate of time it will operate without external power.
Cost: $60+

5. Trickle Charger – About $9
Just Add Batteries

6. Solar Power or Wind Power Cost $140 to $200 for Solar
Just Add Batteries
Will operate even when cloudy.

7. Windmill
Windmill will recharge battery and supply 12 volts or 120 volts depending on choice.
Cost begins at about $400.
Need a Regulator, batteries and distribution method.
Some cities require a permit for permission to install.

8. Harbor Freight Included With Solar
Three 15 watt solar panels produce clean, quiet energy Lightweight, weatherproof construction
Amorphous silicon solar cells for maximum output in both bright and cloudy conditions
Voltage regulator has easy-to-read LED display,
12V cigarette lighter socket,
5V USB, 3-6-9V DC outlets and two 12V sockets
2 - included Light Kit
Includes mounting hardware, 12V Light Kit, battery terminal clamps and universal DC power adapter
Accessories Included
Coupons are available to reduce cost.

9. Inverter To Convert DC to AC
2000 Watt ($150+)
400 Watt ($35)

10. Gas Generator - $350 to $1500 Choose Wattage for total demand needed.
120 Volt
240 Volts
Some have 12 volt panel
Most often Generators have pull chord.
Some have Electric Start
Some come with wheels
Most use gasoline, but dual fuel is available to use propane as well.

11. House Manual Electric Power Switch - $400
This switch prevents your generator power from leaving your house and going into the power lines.
Without this switch, you could kill a Utility Worker trying to repair the Power Lines.
May require an experienced Electrician to install
Connect to Generator

12. Whole House Automatic -$ 5000+
Usually powered by Natural Gas or Propane.
Power is switched automatically when the Home looses regular Utility power.
Requires Licensed Electrician to install.

13. Tesla Powerwall

15. Anderson Power Pole Connectors
Anderson Power Pole Connectors are becoming a HAM standard. You can buy prewired cables or make your own
AMP
Are the 15, 30 & 45 amp Powerpoles interchangeable?
Yes. The 15, 30 & 45 amp contacts all use the same housing. Therefore, they all plug into each other. The only difference between the 15, 30 & 45 amp contacts is the size of the receiving barrel that holds the wire.

16.
Rigrunner $69.65
MFJ $39.95

17. What Batteries Should Be Used
Lead-Acid –
Least Expensive,
Sizes vary (Wattage and Amp Hour)
Easy to maintain.
Nickel Cadmium –
Easily Available.
Problem with disposal and capacity.
Nickle Metal Hydride –
Resolves most problems associated with Nickel Cadmium.
Lithium Ion –
High Energy Density more energy per square foot
Danger in charging (Requires Specialized Charger)
Available in variety of sizes
Long life

18. How Much Power Do You Need?
Icom IC-718 Max Power Out: 100 Watts
KT-8900
Kenwood TH-D7A
Output Power: 5 watts
Receive: 25 mA
Transmit: 1.7 Amp max.
Dual Band
Packet and APRS capable
Output Power: 25 watts
Off: 30 mA
Receive: 280 mA
Transmit: 2.60 A 30 watts
1.46 A 20 watts

19. My Electrical Usage Over 2 Years
Period
Days From Last Read
Usage (kwh)
Bill Amount
Jan 2016 33
827
$74.68
Dec 2015 31
769
$68.43
Nov 2015 32
590
$60.91
Oct 2015 29
519
$62.46
Sep 2015 30
522
$64.11
Aug 2015
463
$57.46
Jul 2015
583
$71.03
Jun 2015
165
$23.77
May 2015
$21.96
Apr 2015
214
$23.58
Mar 2015
199
$22.06
Feb 2015
141
$17.12
Jan 2015
176
$20.10
Dec 2014
156
$18.41
Nov 2014
168
$21.40
Oct 2014 28
137
$20.35
Sep 2014
146
$21.35
Aug 2014
167
$23.68
Jul 2014
447
$54.85
Jun 2014
530
$64.07
May 2014
559
$60.77
Apr 2014
610
$57.71
Mar 2014
599
$57.65
Feb 2014
712
$67.55
Jan 2014
999
$92.46
What happened here?
I was on a mission in Salt Lake

20. Math Related Questions
V=I*R
P=V*I
Electrical Power Usage
My maximum electrical usage = 1000 KWH or 33 KWH per day. = watts in 24 hours or 1,375 watts per hour
My lowest electrical usage = 137 KWH or 4.5 KWH per day. = 4500 watts in 24 hours or 188 watts per hour.

21. References Emergency Power for Radio Communications – ARRL

22. Harbor Freight