Category — Hardware
Field Day Antennas — 5 Considerations
Field Day brings forth a wide range of antennas used for the event. Clubs even have their own stock of antennas, hidden in local garages, to spring on participants if needed.
Whether it is beams and towers or stuff with wires, here are some Field Day considerations for antennas:
Easy Does It
Antennas have to be put up and taken down. Ham Radio rules apply here as well: everything will take twice as long as you think to put up and take down, so select something easier to do.
Lower is better
Field Day favors working stations close-in relative to the world. Verticals with low angles radiation won’t help you work as many people as you need to, so try horizontal antennas that are not too high up.
Monobanders help
Monoband antennas will give you better SWR across the band and will help reduce inter-station interference. Nothing like operating 20-meters on your triband yagi with the 15 and 10-meter stations chiming in as well.
Any tower must be well supported
Safety is a big deal here and people setting up antennas for an event are more likely to cut corners. Don’t do that; safety first.
Know your antenna supports
If you have a long wire or dipole or inverted vee…where will the ends be supported? The middle of a flat field doesn’t help you support dipole ends, so some other support structure will be needed. Pre-planning on the site will help.
What are your favorite Field Day antennas?
Scot, K9JY
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May 14, 2008 No Comments
Field Day Station Captain Checklist
Field Day is coming up sooner than we think. So I thought I’d spend some time on Field Day and start working through some of the tasks associated with the event.
Most Field Day operations have more than one station. A conventional way of working each station is to have a “Station Captain” responsible for the setup, tear down and allocation of responsibilities for the station and operators.
What follows is a beginning attempt to establish a “checklist” for station captains.
Station Captain Checklist:
Equipment:
Radio
Antenna Tuner
Morse Key
Microphone
Computer
Field Day software
Computer – Radio Interface
Sound Card Check
Coax
Antenna 1
Antenna 2 (if needed or wanted)
Antenna Supports
Network Router or Hub
Network Cable
Wireless Adapter
Plans:
Setup
Take down
Operator Schedule
Bonus Point attainment plan for station
Food
Cooking
Shelter:
Shelter – tent, RV…??
Sleeping bag or equivalent
Clothes
For cooking
For refrigeration
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What else should be added to this list? What other lists should be here?
Scot, K9JY
May 12, 2008 5 Comments
Surge Protect Your Whole House
On the Tower Talk Reflector, there has been a good discussion on “whole house” surge protectors. I had not seen anything like this until I watched “Holmes on Homes” on the Discovery Channel. The host of the show is now installing these surge protectors — about $500 — on the incoming power to the electrical box.
Supposedly, the surge protector will protect the entire house from electrical surges, though every one that I have read about says to continue to provide good surge protection at the point of the equipment. Plus, of course, power lines are not the only way surges get into the house — wired telephone lines, cable, and others contribute.
Multiple thousands of dollars can be lost without even being struck by lightning; the whole house surge protector seems to be a good investment to make.
Has anyone out there used whole house surge protectors? What’s your experience?
Scot, K9JY
April 23, 2008 2 Comments
Amateur Logic TV
Many hams have taken to podcasts and video to help tell the ham radio story. But Amateur Logic TV focuses entirely on video on it’s site.
The really great news is that each of the videos, in the half hour range for each one, is well done — certainly better than anything I could do.
The latest videos you can download: Ameritron Amplifier Factory Tour, MFJ Factory Tour, and Building the Softrock Software Defined Radio.
For those of you who haven’t tried doing video, let me tell you it’s a ton of work, especially for the length of the shows that Amateur Logic TV is doing.
There’s more of course. Real people talking to real people who provide us our stuff for a great hobby. Check them out.
Scot, K9JY
January 23, 2008 No Comments
Reversible Beverage Array by OH2BEN
Seventeen pages of how to build beverages — using the KISS method. Tom, OH2BEN, notes:
Because I am not an engineer or technically oriented person, this is also a learning process for me. I am good to solder PL259’s, but all electronic stuff is beyond my understanding. But I am learning. And I can assure you, that it takes a lot of time to understand all technical nuances and there are still a lot of things what I cannot understand. Therefore all notes are just how I understand it and in a KISS way. And therefore you cannot expect to see some nice or new ideas
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This is my kind of article.
Check out Building a Reversible Beverage Array.
Scot, K9JY
Thanks ARRL Contest Newsletter.
November 5, 2007 No Comments
