That 50x25 rectangle, according to my modeling, should work nearly as well as a perfect square, so don't sweat it. I wouldn't go any narrower than the 2:1 ratio for the rectangle, so I'm glad it fits!
Being on ground is important to get the lower angles, and just laying down is fine enough within a few inches or so. It was just when I saw some wire higher up in the shrubs and over the brickwork that caught my attention.
Contests are also a good time to play with the bands that are larger than 1 wavelength with their non-optimal patterns - reception is still there. For instance, my 60 foot loop, which is designed to go no higher than about 15 mhz, is doing "ok" up at 15 meters, where the contesters are active on cw. Hawaii, KH7B is blowing my doors down on 21 mhz even though my pattern is a skewed high-angle blob pointed away from the islands
Chokes are still important. Starting with an isolated transformer is still the best bet, followed by a good choke. What usually turns up is the ever-popular "ugly balun" choke, which is very limited in effectiveness. If one is going to use that, then by all means see this reference from G3TXQ:
http://www.karinya.net/g3txq/chokes/
Perfect for whipping something out to catch the second day of the contest while waiting for ferrites or an off-shelf commercial solution.
If one is running cable-tv 75 ohm coax, just be careful not to exceed the bend radius so as not to break it, or make the center conductor migrate into the insulator. Best to use an inline solution, or perhaps a jumper for this purpose.
Or, as long as one keeps these things in mind, just lay down what ya' got and try it and improve as you go. Gotta' run - I've got a Canadian VY station blasting me on 21 mhz...
Being on ground is important to get the lower angles, and just laying down is fine enough within a few inches or so. It was just when I saw some wire higher up in the shrubs and over the brickwork that caught my attention.
Contests are also a good time to play with the bands that are larger than 1 wavelength with their non-optimal patterns - reception is still there. For instance, my 60 foot loop, which is designed to go no higher than about 15 mhz, is doing "ok" up at 15 meters, where the contesters are active on cw. Hawaii, KH7B is blowing my doors down on 21 mhz even though my pattern is a skewed high-angle blob pointed away from the islands
Chokes are still important. Starting with an isolated transformer is still the best bet, followed by a good choke. What usually turns up is the ever-popular "ugly balun" choke, which is very limited in effectiveness. If one is going to use that, then by all means see this reference from G3TXQ:
http://www.karinya.net/g3txq/chokes/
Perfect for whipping something out to catch the second day of the contest while waiting for ferrites or an off-shelf commercial solution.
If one is running cable-tv 75 ohm coax, just be careful not to exceed the bend radius so as not to break it, or make the center conductor migrate into the insulator. Best to use an inline solution, or perhaps a jumper for this purpose.
Or, as long as one keeps these things in mind, just lay down what ya' got and try it and improve as you go. Gotta' run - I've got a Canadian VY station blasting me on 21 mhz...
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