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Topic: 160 meters

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Amateur radio

	NL7Z Alaskan Topband site!
		Topband is just another name for the 160 meter band, it is the only amateur band that is in the medium wave spectrum - the frequency range is 1800 KHz - 2000 KHz, located just above the A.M. broadcast band.
		Working a new DX station is a real thrill - but you usually have to invest time, and patience on the band to work dx - plan on getting up at unusual times in order to "snag" that new country.
		160 propagation very hard to predict, there are many factors which affect this band much more than say 80m or 40m.
	www.mtaonline.net /~nl7z (237 words)

	Originally published in July 1997 QEX, Copyright ©1997, American Radio Relay League Estimating T-network losses at ...
		Typical examples at 80 meters would be a 10 ohm load resistance transformed to a 4000 ohm parallel equivalent which is transformed back to 50 ohms, while a 100 ohm load resistance might be transformed to 1000 ohms before being transformed back to 50 ohms.
		Custom roller inductors can have a higher Q. Since 80 and 160 meters are the lower frequency limits of these tuners, and the antennas to be tuned there are often relatively short or far from resonance, losses for these bands are important concerns.
		For the ultimate transmatch, at 80 or 160 meters, the reactance of the capacitor across the input is significantly larger than 50 ohms, so it has little effect.
	fermi.la.asu.edu /w9cf/articles/tuner/index.html (2744 words)

	Minooka of battle creek special
		Three trips by the author to HK0 and HK1 locations motivated further investigations of portable antennas for use on 160 meters.
		The following is a description of an effective vertical antenna for 160 meters, designed with these objectives in mind.
		Only a dip meter and SWR indicator are needed for tune-up Man versions were built and tested, ranging from 7- foot mobile types to 60-foot backyard or DXpedition models.
	www.pi4cc.nl /link/bc.htm (1413 words)

	A Full Wave Loop Antenna
		I worked all 50 states and several countries with 100 Watts using the antenna on the 160 meter band.
		For 160 meters a full wave loop antenna resonant at 1.9 Mhz would be about 529 feet long.
		For the 75 meter band a full wave loop antenna resonant at 3.85 would be about 261 feet long.
	www.bloomington.in.us /~wh2t/loop.html (1014 words)

	Contest Club PI4CC
		The weight of the coax for 160 and 75 meter traps, especially, is a tad on the hefty side to begin with PVC plumbing pipe is readily available and works nicely as coil-form material.
		This antenna is designed for 40, 80 and 160 meters to complement a tri-band beam normally taken on DXpeditions for 10, 15 and 20 meters, so six bands can be worked with only two antennas.
		The antenna is a vertical element 48 feet (15 meters) high with traps for 40 and 80 meter operation, with a top loading guy wire connected BELOW the 80 meter trap to resonate the antenna on 80 meters and a top loading wire connected ABOVE the 80 meter trap for 160 meter operation.
	www.pi4cc.nl /link/mkII.htm (1801 words)

	General Purpose Small Vertical Loop Antennas for 160 - 10 meters (Site not responding. Last check: 2007-11-07)
		This 14-foot circumferential loop is performing as a small directional loop on frequencies of 40 meters and lower in frequency, and as a somewhat poor omnidirectional intermediate-sized loop on bands higher than 40.
		I experimented with a direct connection to the coax without a balun, and got some directivity on 160 and 80 meters, but the common-mode cable ingress noise was pretty bad.
		Small-gauges of wire don't perform as well as tubing does with loops under 0.10 circumferential wavelength, (especially on 160 and 80 meters) and larger conductor sizes, while offering greater sensitivity and a smaller bandwidth, may present a problem when considering the cost, weight, and general hassle of construction.
	www.greertech.com /gpmag/gpmagloop.html (2869 words)

	160 Meters Summer (July 14, 2003) Noise Monitoring
		My first 160 meter monitoring session began at a local time of 9:00 AM (13:00 UTC) on July 14, 2003.
		The antenna was a 1/4 wavelength vertical resonant on 160 meters.
		The S Meter Lite software logs the minimum and maximum data found in the period.
	www.seed-solutions.com /gregordy/Amateur%20Radio/Experimentation/NoiseMeasurements/160m071403.htm (431 words)

	G5RV ANTENNAS
		The G5RV is slightly short on 80 meters where the 450 ohm line serves as a form of matching stub and both a stub and/or impedance matching transformer on the other bands.
		On 160 meters the electrical center of the antenna is at about 30 ft. Down the 450 ohm feedline.
		The G5RV-M is slightly short on 160 meters where the 450 ohm feedline serves as a form of matching stub and/or impedance matching transformer on the other bands.
	www.wb0w.com /g5rv/g5rv_antennas.htm (760 words)

	SSGC ships 160 meters to Germany -DAWN - Business; 09 June, 2004
		The gas meter manufacturing plant was established in 1975, under the licence from a French company M/s Actairis, formerly known as Schlumberger.
		The meter plant is the only one in Pakistan of its kind and is fully meeting the total demand of both of the utility companies SSGC and SNGPL.
		The plant has immense potential for further development as indicated by introduction of a new version of G 1.6 meter and moved forward its deletion programme for the measuring unit with the help of local vendors.
	www.dawn.com /2004/06/09/ebr8.htm (228 words)

	KN4LF/KK4TR 160 Meter Linear Loaded Voltage Fed T Antenna
		On 160 meters an 1/8 wave vertical with an approximate length of 64 feet should have a three top hat wire lengths of 64 feet.
		For 80 through 10 meter operation, it is recommended that you use 450/600 ohm ladder line from the antenna end feed point, to a "balanced" network tuner just inside of the shack.
		At times due to the propagational nature of 160 meters during propagation disturbances, a low dipole can outperform a Tee Vertical on DX and is also quieter.
	www.kn4lf.com /kn4lf2.htm (3180 words)

	160 Meter Balanced Coaxial Receiving Loop Antenna
		As follows is an explanation of the 160 meter balanced coaxial receiving loop antenna that I recently built.
		My 160 meter receive loop antenna has a diameter of approximately five feet, with the bottom of the loop mounted approximately four feet above ground on a AR-35 Hy Gain rotator.
		My receive loop is mounted in the NE corner of my backyard, approximately 70 feet from my 160 meter inverted L transmit antenna and 50 feet from my radio shack.
	www.kn4lf.com /kn4lf40.htm (1530 words)

	K3MT's 160 meter "Inverted U" antenna
		But a resonant 160 meter vertical is more than 120 feet high.
		If a 160 meter whip were made more than 135 feet high, the point of maximum current would no longer be at the ground; its feed impedance would be greater than the quarter-wave 38 ohm value, and would be inductive, not capacitive.
		Unfortunately, 160 meters is not a good band for contesting during FD.
	users.erols.com /k3mt/inv_u/u_160.htm (1214 words)

	Geo Scientific Ltd. - Water Quality Meters - Turbidity Meter - Analite 160
		Two probes are available: the standard NEP260 high sensitivity 90° probe is capable of measuring turbidity levels from 0 to over 3,000NTU, while the NEP280 retro-scatter probe is capable of measuring turbidity level from 10 to 20,000NTU.
		Both probes come standard with 5 meters of cable, but can be submersed to a depth of 30 meters with extra cable.
		The probes are "smart probes" in that they each carry their own "signature", that is, calibration and characterization data.
	www.geoscientific.com /waterquality/Analite160.html (229 words)

	MODIFYING THE CLIPPERTON 'L' LINEAR AMPLIFIER FOR BETTER 160 METER OPERATION
		However, output on 160 meters was quite low (500-550 watts), plate current tended to be high for this output level (over 750 ma), and the output began to drop after the key was down for just a few seconds.
		While I was at it, I added an HEC N750 200 pf doorknob in parallel with C-14/15/16 (switched in on 160 meters).
		I know that my amp is a much better performer on 160 meters now and look forward to many more years of faithful service.
	www.isp.ca /ve3nh/clip.htm (1052 words)

	Kites for Ham Antennas
		One report of an experiment with 160 meters raised several interesting points.
		The objective was to fly a kite next to the ocean and use the Pacific Ocean as a ground plane.
		In the case of a 160 meter antenna, the AM broadcast blocking filter could easily be designed to have as its first component something to provide a DC path to ground.
	www.chem.hawaii.edu /uham/kite.html (2018 words)

	Coax Loop Antenna for 160 - 10 meters (Site not responding. Last check: 2007-11-07)
		Coax Loop Antenna for 160 - 10 meters
		On any band higher than 160, the loop can no longer be classified as a small loop and I lose the bidirectional nulls.
		You now have a highly directional low-angle 80 / 40 meter loop (almost omni for skywave angles) and the rest is a small length of feedline that goes to the input of your receiver or tuner.
	www.greertech.com /hfloop/mymagloop.html (4695 words)

	Collins 20V Conversion to 160 Meters (Site not responding. Last check: 2007-11-07)
		If your transmitter is already on the high end of the AM broadcast band, you won't have to do much to get on 160.
		You would have to rewind the plug-in coils in order to use any band other than 160 meters and you would have to change a fixed capacitor in the PA tank compartment.
		The meter panel lamps are old-fashioned GE Lumiline bulbs, 40 watts at 115 volts.
	home.att.net /~k2pg/20Vconv.htm (679 words)

	HFRadio.org :: View topic - DX season on 160 Meters (Amateur Band) (Site not responding. Last check: 2007-11-07)
		I kept seeing 160 meter spots and hearing stations within several hundred miles of me working Europeans, but I could not hear the EU stations at all!
		(1) A horizontal antenna for 160 such as a dipole would have to be extremely high to have a low radiation angle.
		A "full sized" vertical for 160 would have to be about 120 feet high or so.
	hfradio.org /forums/viewtopic.php?p=492&sid=d01e2231ac8ce4cf626ca583abb8a17e (827 words)

	USATODAY.com - Physical facts about Antarctica (Site not responding. Last check: 2007-11-07)
		Since all but 2.4% of Antarctica is covered by ice that averages 7,870 feet (2,160 meters) thick, it is also the highest continent.
		Antarctica is about 4.5 million square miles (14 million square kilometers) in area, which is about the size of the contiguous 48 U.S. states plus about half of Mexico.
		Winds on the Adlie Coast in the winter of 1912-1913 averaged 40 mph (18 meters per second) 64 percent of the time, and gusts have been recorded at nearly 200 mph (90 meters per second.)
	www.usatoday.com /news/healthscience/science/cold-science/background/antarctic-physical.htm (614 words)

	ham radio - a Whatis.com definition - see also: amateur radio (Site not responding. Last check: 2007-11-07)
		(a wavelength of about 160 meters) upwards through several hundred gigahertz (wavelengths in the millimeter range).
		The more privileges a class of license conveys, the more difficult is the examination that one must pass to obtain it.
		For example, in the early part of the 20th century, government officials believed that all the frequencies having wavelengths shorter than 200 meters (1.5 MHz) were useless for radio communications, so they restricted radio amateurs to these frequencies.
	whatis.techtarget.com /definition/0,,sid9_gci331058,00.html (345 words)

	160 meters antennas - XE1BEF WEB PAGE
		Dipole Dual DX Antenna - 20 and 15 meters From NB6Z
		Mini-Beam Geometry Basics There is a natural progression of the geometry of the "mini-beams" deriving from the basic yagi, which in itself owes a lot to the common dipole.
		Efficient dipole antenna for 40, 80 and 160 Meters (570,975 bytes, PDF file) QST July 1992
	members.fortunecity.com /xe1bef/160meters-antenna.htm (630 words)

	FLOW Inc. (USA) SELL: WATER: 160,000 CUBIC METERS DAILY POTABLE (Site not responding. Last check: 2007-11-07)
		FLOW Inc. offers 160,000 cubic meters daily of potable water from the municipal mains of Charleston, South Carolina USA.
		An additional 292,000 cubic meters of sweet fresh water is available on allotment for 1998 liftings.
		Up to 20 year contracts are available with 120,000 cubic meter monthly minimum, at far less than desal cost, FOB Charleston.
	world-trade-search.com /d/usa/com/food/fcxe347a2d99.shtml (75 words)

	Women Warriors - Sports - Athletics (Site not responding. Last check: 2007-11-07)
		Athletics events are among the oldest form of sport with the ancient Greeks getting much of the credit for the earliest organized competitions.
		According to the International Encyclopedia of Women and Sports (Macmillan Reference USA, c2001), women in ancient Greece are said to have had running competitions of their own in Olympia every four years, racing a course of about 160 meters.
		According to the Athens 2004 website, the official distance for the race is 42,195 meters.
	www.womenwarriors.ca /en/sports/profile.asp?id=7 (961 words)

	CNN.com - NASA tests solar sail technology - May 16, 2005
		A spacecraft powered by a solar sail would require no onboard propellant, increasing its range of mobility and enabling it to hover at a fixed point in space for longer periods of time.
		Murphy said a solar sail spacecraft would need a wingspan of 80 to 160 meters to gain sufficient momentum from the sun, depending on the mass of the craft.
		Since the spacecraft would continue to accelerate, reaching speeds of tens of thousands of miles an hour, it could theoretically reach the edge of the solar system faster than a conventionally fueled craft.
	www.cnn.com /2005/TECH/space/05/13/vision.solarsail/index.html (479 words)

	ARRLWeb: DXing on the Edge -- The Thrill of 160 Meters
		If you've ever operated on 160 meters, or plan to, you'll want your copy of...
		DXing on the Edge chronicles the history of Topband, from the start of 160 meter operating in the early 1930s until today.
		Jeff has 270 countries confirmed on 160 meters, making him one of the leaders in the DX chase and an expert on this most challenging of amateur bands.
	www.arrl.org /catalog/6354 (224 words)

	The Hustler 5BTV Conversion to 160 Meters
		Well here is a one evening project that will let you give 160 meters a try and best of all it will fit in the smallest of yards.
		This resonator, or loading coil, works on 160 meters by replacing the whip extension with a lightweight Top Hat.
		Tune-up is simple and requires only your rig and an SWR meter.
	www.antennex.com /hws/ws0102/hust160.html (766 words)

	The KGØZP Linear-Loaded Inverted V (Site not responding. Last check: 2007-11-07)
		The next guy ring down is at the 30 foot height point and has nothing more three guy wires.
		The lowest guy ring visible in the photograph is at the 20 foot level, and is the feedpoint for the Fan portion of a Wermager type Broadband Sloper originally used on 160 but now cut for 80 meters.
		I would like to mention again that the upper wire of the Wermager type Broadband Sloper is the wire grounded to the push-pole at the dummy guy ring at the very top.
	archimedes.galilei.com /raiar/loaded.html (2493 words)

	OmniLoop
		Just solder two feedpoint connections No-corrode QuietFlex™ Wire OmniLoop is a closed loop antenna that's a full wavelength long on 160, 80 or 40 meters.
		And OmniLoop is easy for your tuner to match, because its feedpoint impedance never gets as high or low as with an antenna that has free ends.
		Can be loaded on 160 meters at slightly reduced efficiency.
	www.antennasmore.com /omniloop.htm (541 words)

	Collection of Beverage Antenna Information (Site not responding. Last check: 2007-11-07)
		The paper discusses testing longwave antennas (7,000 to 25,000 meters; 12-43 kHz) that were 7 miles (11 km) long.
		This work was done at Riverhead, Long Island, NY, and mentions "shortwave" tests around 450 meters (665 kHz) as a practical upper limit in subsequent experiments.
		While others have since written about the antenna, if you can find a reprint of this original work in a research library, you'll find the paper is fascinating reading.
	www.alleged.com /radio/Beverage2 (1615 words)

	Those Who Seek by Daniil Granin - from SovLit.com (Site not responding. Last check: 2007-11-07)
		The locator shows a large blip at 160 meters and a small one at 280 meters.
		Since the blip at 160 meters is larger, Andrei's team says that's where they should dig.
		The one at 160 was larger because it was nearer; but both points were indicated.
	www.sovlit.com /thosewhoseek (10920 words)

	QRP-L 000217: [TECH] Small Loop on 160 Meters. (Site not responding. Last check: 2007-11-07)
		QRP-L 000217: [TECH] Small Loop on 160 Meters.
		I darn near dismantled the structure I was so peeved.
		The next 160 meter coplanar loop is going to have the
	qrp.kd4ab.org /2000/000217/0031.html (433 words)

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