forever...just like gas or diesel...well, barring breakdowns or maintinence 
shutdowns...
On a 20 pound tank though, and using a generator that is going to keep your 
fridge running, lights on, microwave or stove/oven use on a daily 
bases...probably not terribly long.
But if you have say 5 of those tanks, probably a 2K generator could run for 
a couple weeks with absolute minimal use and shut down when not needed.
Now if your also running a furnace blower motor in the winter to keep your 
house warm, your going to use up allot of fuel because that furnace is going 
to be coming on all the time.
Personally I'd never use a generator that was dependant upon a utility 
service, like natural gas...those services though more stable than 
electricity, also go out as we know in the recent NJ gas outages.

Propain has it's advantages because it will store longer, it's easy and safe 
to store more or less...it's easy to get and can be cheaper to obtain than 
gas...sometimes.  And, you can use it for the BBQ if your stove and oven are 
electric and you don't want to use the gennerator to power them during 
service outages.
I could eat bbq for 2 weeks I think lol.

73
Colin VA6BKX
----- Original Message ----- 
From: "Gary Tillinghast" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Monday, November 12, 2012 8:24 PM
Subject: Re: NJ Storm and Emergency Power; was: Report On Today's 40-meter 
East Coast Mid West Blind Ops Round table


> How long can you run a generator on propane?  Gary KB2YAA
> ----- Original Message ----- 
> From: "Jim Kutsch" <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Monday, November 12, 2012 8:31 PM
> Subject: NJ Storm and Emergency Power; was: Report On Today's 40-meter 
> East
> Coast Mid West Blind Ops Round table
>
>
> Colleen and all,
> Thanks for the good wishes.  Power was restored here Sunday afternoon. 
> That
> was day 13 without power.
>
> I highly recommend portable home generators.  Not only can they run the 
> ham
> shack but can run other essential services.  By the way, as a blind person
> with no need for gasoline for cars or lawn mowers, I didn't want to store
> gasoline for long periods and risk it turning bad.  So, I found a propane
> generator that runs on the 20 pound tanks used for BBQ grills.  It worked
> great and has no fuel storage issues.
>
> Now all that's left is to get the HF antenna back up.  Maybe next weekend.
>
> 73,
> Jim, KY2D
>
>
> -----Original Message-----
> From: For blind ham radio operators [mailto:[log in to unmask]]
> On Behalf Of COLLEEN ROTH
> Sent: Monday, November 12, 2012 2:01 PM
> To: [log in to unmask]
> Subject: Re: Report On Today's 40-meter East Coast Mid West Blind Ops 
> Round
> table
>
> Hi Jim and all who were impacted by Hurriane Sandy, I hope that you all 
> get
> your power back and that all of you are safe.
> I know that most of us cannot know what you endured because we have never
> experienced such an event.
> I am glad that there wasn't more loss of life.
> I am sure that the loss of possessions and special cemorabilia will be
> difficult to endure.
> I am praying for all who have experienced Hurricane Sandy and xs' 
> aftermath
> including the Storm which followed.
> I hope everyone will be careful when trying to get things back together.
> God Bless!
>
> Colleen Roth, N8TNV;
>
>
>
> ----- Original Message -----
> From: Tom Behler <[log in to unmask]>
> To:  [log in to unmask]
> Date: Sunday, Nov 11, 2012 10:12:45 AM
> Subject: Re: Report On Today's 40-meter East Coast Mid West Blind Ops 
> Round
> table
>
>>
>>
>> Really sorry to hear of the storm damage and power outage, Jim.
>>
>> Hang in there!
>>
>> Hopefully you guys are done with storms for a while.  Thankfully, the
>> last one didn't amount to as much as they originally thought.
>>
>> 73 from Tom Behler: KB8TYJ
>>
>> ----- Original Message -----
>> From: "Jim Kutsch" <[log in to unmask]>
>> To: <[log in to unmask]>
>> Sent: Sunday, November 11, 2012 9:32 AM
>> Subject: Re: Report On Today's 40-meter East Coast Mid West Blind Ops
>> Round table
>>
>>
>> > Tom and all,
>> > I haven't been able to join you.  Half of my HF antenna came down when 
>> > a
>> > tree and telephone pole broke during Sandy.   I'm in day 13 with no
> power.
>> > The generator can run the Elecraft KX3 easily but I have to get the
>> > antenna up first.  Can't do that until the electric company gets all
>> > the wires out of my front yard.
>> >
>> > Hope the rest of you did OK in the storm.
>> >
>> > 73,
>> > Jim, KY2D
>> >