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#1
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England is smaller in square miles area (I don't give a damn kilometers)
than the State of Oregon.Spain and Italy are not too far from England.And they call that DXing over there!? ........D-Day Larry |
#2
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wrote in message ... England is smaller in square miles area (I don't give a damn kilometers) than the State of Oregon.Spain and Italy are not too far from England.And they call that DXing over there!? DXing on VHF FM frequencies! Around 88-108 MHz. These signals are usually line of sight, so Italy most certainly is DX. -- Simon Mason Anlaby East Yorkshire. 53°44'N 0°26'W http://www.simonmason.karoo.net |
#3
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Well,fix me up with some Eyetalian wimmins then.
cuhulin |
#4
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While shielded audio cable will work, real coax is much better.
Buy some dual shielded, braid with conductive foil, TV style coax from you local parts outlet, RadioShack will work but it isn't my first choice. Your receiver is 50Ohms, but even with a 9:1 matching transformer your antenna impedance will vary wildly. And 75 Ohm instead of 50 ohm is only a 1.5:1 mismatch. Hardly worth thinking about. The Doty article on "Low Noise Antennas" is a must read. His reasoning for burring the coax is excellent and can help to really knock the noise down. I say can, because some locations are hard luck and can be very difficult to reduce the noise. His approach gives the most result for the work of any I know of. Terry |
#6
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Try these links:
http://www.anarc.org/naswa/badx/ante...e_antenna.html http://www.anarc.org/naswa/badx/ante..._longwire.html MiniCircuits makes 9:1 transformers if you aren't up to winding your own: http://www.minicircuits.com/transf.html http://www.minicircuits.com/dg03-238.pdf I use the T9-1, rated for .150~120MHz. Works to well below 100KHz. I found I got a slightly cleaner, better noise isolation from our home by adding a T1-1 (1:1) at the halfway point and not tieing the grounds in common. One of the ham radio antenna sites I frequent has mentioned the minicircuits are porne to getting zapped by ligthening. My antenna has been up 3 years, and I had a tree split by a bolt with no effect on the transformer. Terry Terry |
#7
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Very good Hank on the 10,000 mile station.
DX is in the ear of the beholder. For Hams, DX is any station on the ARRL DXCC list -- fro Mexico to Reunion island SWLers have their own definition -- sometimes a weak rare station irrespective of distance Others here will give you their spin on SW DXing. For propagation -- a good one -- easy reading is at this URL: http://www.ae4rv.com/tn/propflash.htm At present we are on the down slide of the 11 year solar cycle -- see URL: http://www.wm7d.net/hamradio/solar/summary.shtml The High for the current cycle - Cycle 23 Flux: 298 - 26 Oct 2003 Currently we are at Current Solar Flux report: SFI: 100 In general the higher the SFI and the lower the A and K index -- the better propagation will be. When the SFI gets below 90 or so -- propagation will be grim on the upper bands. But the lower bands will still be good particularly in the winter time. -- Caveat Lector "HankG" wrote in message ... Hi All: Thanks to all who responded; both factually and humorously. The humor was especially appreciated in light of my very recent, unexpected stay in the hospital (cardiac event). Let me elaborate. I have been interested in SWL off and on for many years as a casual listener. I would just twiddle the tuning knob from low end to high and catch whatever was available, rather than actively seeking DX. Never made the connection between radio and computer (for information about schedules, technology, time of day, etc.). About two years or so ago, I resurrected my SX-99 which is fed by a 30 foot baseboard wire, and conveniently located between my computer, monitor, and TV (ugh) as things were heating up in the middle east. Lots of information became available after joining the group, and general searching on the Web. The biggest drawbacks to actively listening were having an analog tuning receiver and a relatively unstable pitch control/bfo. Right before the war started, I purchased an RX-320, certainly not touted as a DX machine, but a solid performer nevertheless. I also erected Cliff Donley's 33 foot folded dipole inside of my roof. I was totally amazed when tuning in my first sideband transmission--rock-solid, on frequency. Well, so much for background. Back to my original question. I had been tuning around and came across Radio Australia (verified) on 11.880 at 20:00 z on Sunday (prior to New Years). I had been trying unsuccessfully to 'log' Australia for some time as I considered this to be a DX catch, perhaps on the outer reaches of DX. According to a GC calculator, the distance from my location (NJ suburbs of Philadelphia) was noted as over 10,000 miles (did not use coordinates for Shepparton, but rather Melbourne). As I will be recuperating, and spending more time at the radio, I want to try my hand at actively seeking DX. A few questions come to mind: At what point does a transmission become DX? Is it a matter of distance only, or distance when station power is considered? I plan to use the ILG database in RLDB to see what's on and try to log it. I've also been trying to get a handle on understanding parameters influencing propagation, such as the SF, A, and K. A few links from were very technical and left my head spinning. Can some kind soul(s) offer a simple explanation of what these are and how they will impact my SWLing (e.g., more or less of this or that is good/bad, or how knowing the values can better my chances of logging a specific target)? Again, thanks to all. HankG |
#8
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"Caveat Lector" wrote in message news:HPeCd.38257$8e5.20838@fed1read07... Very good Hank on the 10,000 mile station. DX is in the ear of the beholder. For Hams, DX is any station on the ARRL DXCC list -- fro Mexico to Reunion island SWLers have their own definition -- sometimes a weak rare station irrespective of distance Others here will give you their spin on SW DXing. For propagation -- a good one -- easy reading is at this URL: http://www.ae4rv.com/tn/propflash.htm At present we are on the down slide of the 11 year solar cycle -- see URL: http://www.wm7d.net/hamradio/solar/summary.shtml The High for the current cycle - Cycle 23 Flux: 298 - 26 Oct 2003 Currently we are at Current Solar Flux report: SFI: 100 In general the higher the SFI and the lower the A and K index -- the better propagation will be. When the SFI gets below 90 or so -- propagation will be grim on the upper bands. But the lower bands will still be good particularly in the winter time. -- Caveat Lector (gotta love that name) Thanks for the useful information. Looking forward to putting it to use. HankG |
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