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An Engineer's Field Day
7/16/2014

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GarySXT
User Rank
Freelancer
Re: Wind Power?
GarySXT   7/23/2014 5:09:39 PM
NO RATINGS
I have specialized as the FD 40M CW op for about 25 years.  Polarization is a big help with inter-station interference.  I also use several antennas with different take off angles for different target ranges.  The NVIS is best out to around 200 miles. A dipole at 30' is best from around 200 miles to 600 miles or so, and a vertical with elevated tuned radials for longer distances.

I have a power splitter so I can feed them one at a time or multiple antennas and still show the transmitter 50 ohms.

This is from the Midwest.  From eastern Oregon you probably don't have a lot of stations in the 100 mile range or so,  and the NVIS might not be that useful.

elizabethsimon
User Rank
CEO
Re: Wind Power?
elizabethsimon   7/23/2014 11:26:40 AM
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That sounds like a good idea. I've got a surplus military mast of the type where you assemble sections and then have to rais it to a vertiacl position. A telescoping mast sounds like it should be easier...

For Field day, we've found it preferable to have a mix of horizontally polarized and vertcally polarized antennas to reduce the interferenced between stations.

 

GarySXT
User Rank
Freelancer
Re: Wind Power?
GarySXT   7/23/2014 9:18:39 AM
NO RATINGS
I really like surplus telescoping military mast for supporting dipoles at Field Day.  It is easy to transport and set up.

mhrackin
User Rank
CEO
Re: Wind Power?
mhrackin   7/17/2014 5:32:10 PM
NO RATINGS
To invoke "The Graduate" I have one word for you:  "Verticals."

elizabethsimon
User Rank
CEO
Wind Power?
elizabethsimon   7/17/2014 5:29:17 PM
NO RATINGS
Wind power sounds like an interesting idea...

I've since moved to eastern WA where we have plenty of wind but whether we have any on Field day is always the question... And then theres finding and getting permission to operate at a wind farm.

Of course that the problem is that good wind sites usually don't have trees so we'd have to come up with an alternate plan to string antennas.

 

mhrackin
User Rank
CEO
Re: What about?
mhrackin   7/17/2014 12:06:17 PM
NO RATINGS
Your fuel-cell powered FD is just a mildly updated version of what I remember of my days with IRAC (Irvington NJ Radio Amateur Club) more than 50 years ago.  We used multiple 3KVA gasoline-fueled generators for our 3-4 rig Field Day station, along with a lot of "festoon" strings of 115V incandescent lamps along the paths connecting the tents.  Maybe you should try to get permission to use a wind-power site next year (as you seem to be in CA, there should be some not too far away).  Of course, you might have some Doppler modulation effects from the turbine blades!

I'm still Advanced class, W4LGN, but inactive these days. 

Max The Magnificent
User Rank
Blogger
Re: Field-day radio
Max The Magnificent   7/17/2014 12:01:29 PM
NO RATINGS
@mhrackin: It's like the old saying "Ve grow too soon old und too late schmart!"

I'll drink to that LOL

mhrackin
User Rank
CEO
Re: Field-day radio
mhrackin   7/17/2014 11:53:17 AM
NO RATINGS
No, Max, I noticed the same phenomenon quite a few years ago.  It's like the old saying "Ve grow too soon old und too late schmart!"

elizabethsimon
User Rank
CEO
Re: What about?
elizabethsimon   7/17/2014 11:46:33 AM
NO RATINGS
George,

Actually, I was just thinking about the time you joined us for Field day with the Alameda county club...

It's been a long time but I still remember.

 

KC0GP
User Rank
Rookie
Re: What about?
KC0GP   7/17/2014 11:02:59 AM
NO RATINGS
Hey, remember me? Saw a posting about your article in a daily email I get about Ham Radio news around the world and wondered if you would know who I am?

 

George Pease

KC0GP

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