Yep, about 295 feet. These two are 5 deg apart since that is where my ground rods are along the west side of my land here. I don't use coax, I just drive to the ends of the BOGs, run them under the car (now a new truck) door and hook up to my rx or phaser on top of the rx on the passenger seat. I would prefer them to be // but the differences in side pick up of shorter BOGs that close together is not huge.
I have used coax but only 50 feet to get bring the signal out of the woods, or reeds where I cannot park, but you need a transformer and a ground rod at the coax, or it will simply act as an extension of the antenna, IMHO, and if running at an angle back to the shack would severely mess up the directional reception pattern. I doubt, that if living in a townhouse complex and not owning all the land, that you would be allowed to put in a far end ground rod for termination. What I would do if living in a town house complex would be to DX from my car, maybe even parked on the street and run as much wire in a straight line (up to 900 feet) on the ground and then run a // shorter wire (130 to 150 ft shorter seems to give good phasing results for the high end and 175 to 200 ft for the lower to mid band) Since I think you're limited to about 300 ft and that length works decently on the high end, that would be my area of concentration, noting that there are many stations up from 1230 to 1600 and directivity matters. I'd use 300 ft // 170 feet and that will give good phase difference across the high end so that when you phase null back end QRM, you won't phase null your DX and may actually enhance it a bit if the two signal combine somewhat in phase. I wouldn't worry about terminations and you'll have a good bi-directional system, allthough it will work a bit better in the direction it is pointed rather than off the back side as there will be a couple dB F/B loss. It is really fast and easy to roll up each wire when you quit each night if you use a hose winder. 73 KAZ ----- Original Message ----- From: <[EMAIL PROTECTED]> To: <[email protected]> Sent: Saturday, January 26, 2008 3:40 PM Subject: [IRCA] [Fwd: Re: Center-fed BOG?] > Hey Kaz: > > Thanks! Couple quick questions: when you say "...but it didn't seem as > effective as the same termination on the longer northern BOG about 295 deg > at 355 deg" - you mean 295 feet at 355 degrees?? That would put the two > of them 5 degrees apart, rather than parallel as intimated in Gil's post: > is there a difference? > > OK, maybe one more question - I may be able to roll out about 295 feet > each night. I assume that terminating with a 270 or so ohm resistor means > that I can use 300 ohm twin-lead to the shack?? > > 73 - Kevin > > _______________________________________________ IRCA mailing list [email protected] http://montreal.kotalampi.com/mailman/listinfo/irca Opinions expressed in messages on this mailing list are those of the original contributors and do not necessarily reflect the opinion of the IRCA, its editors, publishing staff, or officers For more information: http://www.ircaonline.org To Post a message: [email protected]
