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Topic: 20 meters

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	40 meters - Wikipedia, the free encyclopedia
		The 40 meters or 7 MHz band is a core amateur radio frequency band, spanning 7000 to 7300 kilohertz, allocated to radio amateurs in all countries worldwide.
		One of the five original shortwave bands allocated to amateurs in 1926, 40 meters is considered the most reliable all-season DX band, most useful for inter-continental communication at night.
		With its unique combination of intra- and inter-continental communications possibilities, 40 meters is considered a key band in building a winning shortwave contesting score, especially in the lower part of the sunspot cycle.
	en.wikipedia.org /wiki/40_meters (424 words)

	Shortwave bands - Wikipedia, the free encyclopedia
		The bands are conventionally stated in wavelength as measured by meters.
		Many bands, most notably the VHF 6 meters band, are notable for their behavior that depends on the season and the level of solar activity.
		It is often used for extended, informal chats known as "ragchews." 17 meters is a WARC band.
	en.wikipedia.org /wiki/Shortwave_bands (1221 words)

	antennas : Antennas: 20M
		20 meters Cage Dipole - Cage Dipole is based on the fact that a wireframe does emulate a tubing of the same diameter, supposed that the wires in the frame are close enough to resemble a solid surface.
		Reflected M beam for 20 meters - The Reflected M beam is made from a pair of wires formed in the letter M that are back to back.
		VK5AH -HF 4 Bander dipole - 80 - 40 - 20 - 15 meters dipole antenna
	www.dxzone.com /catalog/Antennas/20M (1745 words)

	2001 ARRL RTTY Roundup
		This station was designated for 15 and 40 meters and was equipped with Dunestar bandpass filters and a 23' shorted stub for 15 and 40 meters connected to the output of a Bird wattmeter.
		This station is equipped with an open 23' stub for 10 and 20 meters plus a Dunestar 600 switchable band filter which allows this station to be used on any band 10-80M.
		The reason I had more contacts on 80 meters in 2000 was because I had to go there from 20 meters because the RFI was too bad on 20 when I was transmitting on 40 meters.
	www.aa5au.com /arrlru01.html (2662 words)

	SCUBA DIVING SUBIC BAY PHILIPPINES
		The average dive is 28-35 meters, and the visibility is normally 15-30 meters, slightly deeper than other wrecks and often with slight current, still a safe dive with plenty to see.
		Maximum depth on this dive is 20 meters (60 feet) with visibility of 5-15 meters (15-45 feet) depending on the time of year.
		The average dive begins at 18 meters (52 feet) and ranges to 24 meters (75 feet) with visibility from 5-15 meters, depeding on the tide.
	www.divephil.com /subic (543 words)

	The Extended Double Zepp (Site not responding. Last check: 2007-11-04)
		The 10 meter plot is not included here because it is split on the end as this approaches a long wire on 10 meters.
		Gain on 15 meters in the favored direction is 11 dbi with a launch angle of 26 degrees.
		Note how the 10 meter pattern has split and now has maximums that are 42 degrees off axis of the antenna broadside and an unfortunate null directly broadside to the antenna.
	www.chem.hawaii.edu /uham/zepp15.html (592 words)

	Examples of Newton's Second Law
		A meter is a little longer than a yard, while a kilogram is a little more than 2 pounds.
		After one second, its speed becomes 10 meters per second, after two seconds its speed reaches 20 meters per second, after three seconds it is 30 meters per second, and so on.
		If a penny is tossed off the cliff, it too would fall 5 meters, 20 meters and 45 meters after respectively one, two and three seconds.
	www.jupiterscientific.org /sciinfo/examplesfeq.html (835 words)

	Lighting (Site not responding. Last check: 2007-11-04)
		If the vessel is using figure 2 and is 12 meters (39 ft. 4 in.) or more in length but less than 20 meters (65 ft. 6 in.) then the masthead light must be 2.5 meters (8 ft. 2 in.) higher than the gunwale.
		During daylight operation, vessels 12 meters (39 ft. 4 in.) and over using sail and machinery must display the shape of a fl cone pointing down.
		Power driven and sailing vessels 7-20 meters (23 to 65.6 feet) are required to show an anchor light except when in a special anchorage area designated by the Secretary of Transportation or other authority.
	www.state.tn.us /twra/boat001b.html (446 words)

	Why Parking Meters Should be Outlawed in Public Places
		The money from meters can be significant (especially when there are thousands of meters installed) however, cities really want people to overstay their parking limit so they can write parking tickets - this is where they make most of their money.
		Meters are a reoccurring cost since you must factor in the cost of replacing existing ones every 15 to 20 years.
		There are 11 holidays observed, times when the meters are not fully used, meter personnel do not come by on time so the they do not give out tickets (and the meters are not fed) so if you give a generous 20% "wastage" time, that still puts the likely income at around $12 million dollars.
	www.taphilo.com /tom/parkingmeters.shtml (2928 words)

	ARRLWeb: The K7RA Solar Update
		A solar wind stream is expected to cause active geomagnetic conditions today, October 20, with the October 20-23 planetary A index predicted at 20, 13, 8 and 5.
		40 meters 0030-0800 UTC and 20 meters 1500-1630 UTC.
		From Seattle, 0000-0730 UTC on 80 meters, and on 40 meters, 2200-1030 UTC, 1200-1300 UTC and 1430-1630 UTC.
	www.arrl.org /news/stories/2006/10/20/100 (1468 words)

	Diving Tours in Turkey
		As for the second dive, it is a Kiris aquarium reef dive and is a maximum of 18 meters.
		As for the second dive, which is between 18 and 20 meters, is a night dive and is done near the cliffs of Antalya.
		As for the second dive, which is between 16 and 18 meters, is a night dive and its location is near the cliffs of Antalya.
	www.twarp.com /diving.htm (914 words)

	:. Philippine Islands Divers - Bohol Divers
		The top of the shoal starts at 15 meters to 23 meters with a steer drop-off until 45 meters, and a second drop-off exceeding the limit of the sport diver depth..
		More than 100 meters long, this ship lay down on 54 meters of water and his upper part being at 40 meters from the surface.
		The top, being only 20 meters away from the surface is covered literally with amazing beautiful soft corals.
	www.phildivers.com /malapascua_divesite.html (917 words)

	2004 CQWW
		With high power, I get a lot of interference into the 20 meter radio when I transmit in the lower part of the 40 meter band so I was mostly CQ on 20 meters and SandP on 40.
		At 0115Z I moved from 20 to 80 meters on the B radio after a quick pass showed that 20 meters had gone away.
		At 0700Z there were no signals at all across the 20 meter RTTY band, EU was gone from 40 and 80 was void of anyone I hadn't already worked, so I went to bed at 0705Z.
	www.rttycontesting.com /contestnotes/2004_cqww.htm (2926 words)

	Stake Stick
		It may be broad banded enough to work on the bottom of the six meter band depending on how understanding the rig is. I also need to measure its exact resonance when mounted on the spring/base and see what SWR is possible on six and 12 meters with one and two masts by themselves.
		The modified 10 meter resonator can be used as is for a 10 meter mobile antenna with an immediate improvement in bandwidth over the 10 meter coil it started life as.
		But even though 12 meters continues to be a problem, it is minor compared to getting full size operation on 20 meters AND adding six meter operation through use of a 3/4 wave vertical.
	www.chem.hawaii.edu /uham/stake.html (3300 words)

	Legal Requirements - Navigation Lights
		Sailing vessels less than 7 meters may carry an electric torch or lighted lantern showing a white light to be displayed in sufficient time to prevent collision (see Figure 6 - left picture).
		Vessels less than 7 meters are not required to display anchor lights or day shapes unless anchored in or near a narrow channel, fairway or anchorage, or where other vessels normally navigate.
		Anchor lights are not required on vessels less than 20 meters, anchored in special anchorages in inland waters designated by the Harbor Captain.
	www.auxetrain.org /lights2.html (803 words)

	An Attic Coaxial-Cable Trap Dipole for 10, 15, 20, 30, 40, and 80 Meters
		You may note that the 80 meter end sections are significantly longer in the version without the 30 meter traps: much of that difference may be due to the larger percentage of the 80 meter section length that had to be bent to fit my attic in that version.
		To delete 80 meters, simply omit the 40 meter traps and everything after them, placing the end insulators where the 40 meter traps used to be, and you'll have a 10/15/20/30/40 antenna.
		A 12/17 meter dipole could be fed with a second feedline or alternatively, it could be connected in parallel with the 10/15/20/30/40/80 dipole described in the main section of this paper.
	degood.org /coaxtrap (4014 words)

	Mars Exploration Rover Mission: 3-D Images: Opportunity
		The taller promontory beyond that is about 100 meters (about 325 feet) away, and the vista beyond that extends away for more than 400 meters (about 1300 feet) into the distance.
		NASA's Mars rover Opportunity edged 3.7 meters (12 feet) closer to the top of the "Duck Bay" alcove along the rim of "Victoria Crater" during the rover's 952nd Martian day, or sol (overnight Sept. 27 to Sept. 28), and gained this vista of the crater.
		The position at the end of the sol 951 drive is about six meters from the lip of an alcove called "Duck Bay." The rover team planned a drive for sol 952 that would move a few more meters forward, plus more imaging of the near and far walls of the crater.
	marsrovers.jpl.nasa.gov /gallery/3d/opportunity (1331 words)

	Regs and Misc. for Yachts over 20 Meters in Length
		For boats over 20 meters the regs call for one portable B-II extinguisher in the engine room for each 1000 brake horsepower and additional B-II's dependent on the gross tonnage of the vessel.
		Technically if you are over 20 meters you are not required to participate in the VTS, but the regs(33 26.05) imply that you are required to monitor the VTS channel.
		If you are over 20 meters then you must have a FCC Ship Station License, also the operator must have at least a Restricted Radio Operator's License even if you are not going into a foreign country or only have VHF and Radar.
	www.yachtsdelivered.com /over20m.htm (1304 words)

	NB6Zep Antenna (Site not responding. Last check: 2007-11-04)
		The total length is optimized to fit in the space of a 40 meter half wave dipole and the feed line length is optimized for good operation when attached directly to a tuner with balanced output.
		For the first few contacts on 20 meters with the NB6Zep, I reached Texas, Utah, Alaska, Korea, Japan and Argentina, all with strong reports.
		As on 20 meters, the NB6Zep is very directional on 10 meters.
	home.teleport.com /~nb6z/nb6zep.htm (1961 words)

	Basic Frequency Information
		Not as affected by the sunspot cycle as 20-10 meters.
		Around the world daytime communications are usual and when the sunspot cycle is peaking 20 can be used around the clock.
		Much less night time activity than 20 meters but at the peak of the cycle 15 can provide even greater distances.
	www.aesham.com /fundamentals/frequencies.html (1009 words)

	Meters: 20 to 999 DC Microamps
		Unique meter relay monitors 100 µA circuit with minimum and maximum alarm contacts (10 watts).
		Meter has overall dimension of 2-1/4" high x 3" wide.
		We have 500 new in boxes that were discovered in a load we bought from the old 60's powerhouse Lafayette Radio.
	www.surplussales.com /Meters/MtrDCUA.html (387 words)

	Coaches Education.com
		Jog at least 800 meters; flexibility (20 minutes); accelerations (10 meters, 20 meters, 30 meters, 40 meters) with progression of distance.
		Keep walking between each 150 meters and do not sprint until you are ready.
		Acceleration drills: (10 meters, 20 meters, 30 meters, 40 meters) progression of distance; week-by-week increase the workload; intensity can be increased; number of repetitions can be increased.
	www.coacheseducation.com /sprints/george-payan2-apr_02.htm (686 words)

	PRESS RELEASE Aquila Drills 20.7 Meters of 6.79% Copper and 287.6 g/t Silver Near Surface at the Pinwheel Zone and 31.2 ... (Site not responding. Last check: 2007-11-04)
		Aquila Drills 20.7 Meters of 6.79% Copper and 287.6 g/t Silver Near Surface at the Pinwheel Zone and 31.2 Meters of 9.62% Zinc and 4.1 g/t Gold in the Main Zone Hinge
		Four holes from the East Zone and 20 from the Pinwheel Zone remain to be reported, and assay results from these holes will be released in the order and sequence they are received.
		One drill rig continues to test the Main Zone Hinge area located between the East and Pinwheel zones, and details of the current drilling, including a plan view map of the drillhole locations and outline of the East, Pinwheel, and Main Zone Hinge areas are available on the company's website at http://www.aquilaresources.com/projects.php#map.
	www.marketwire.com /mw/release_html_b1?release_id=184709&tsource=3 (596 words)

	Communications Template - USCG Navigation Center
		(i) A vessel of 12 meters or more but less than 20 meters in length shall not be obliged to give the bell signals prescribed in paragraphs (g) and (h) of this Rule.
		The diameter of the mouth of the bell shall be not less than 300 mm for vessels of 20 meters or more in length.
		The words "and shall be not less than 200 mm for vessels of 12 meters or more but of less than 20 meters in length" were removed.
	www.navcen.uscg.gov /mwv/navrules/navrules2003.htm (800 words)

	Endfed 20/30 Mtr Antenna (Site not responding. Last check: 2007-11-04)
		It functions an endfed zepp on 20 meters consisting of a 1/2 wave 20 meter wire (33' 3" long) endfed with a 1/4 wave x velocity factor of twin lead (14' 3" long).
		On 20 the twin line transforms the hign impedance of the endfed 1/2 wave 20 meter wire into a low impedance that is easily handled by many QRP rigs.
		The rig is connected directly to the high impedance feed point of the 30 meter antenna.
	www.io.com /~nielw/qrp2/endfed_ant.htm (301 words)

	Commercial Horns, Military Horns, Military Whistles - Kahlenberg Brothers Company (Site not responding. Last check: 2007-11-04)
		Horns for Vessels 20 to 75 meters (65 to 246 ft.) in Length
		Certified for vessels under 75 meters in length, the KB-20 Electric Horn is a self-contained unit that does not require an air or steam source of any kind.
		Certified for all vessels over 75 meters in length, the Model KPH-130 Electric Piston Horn utilizes a 7.5 horsepower electric motor to drive a piston which oscillates air at 130 Hz.
	www.kahlenberg.com /commer.html (591 words)

	ARRLWeb: W1AW Completes "The Big (Antenna) Project"
		W1AW's typically strong signals may be pushing S meters a tad higher now, following the replacement this fall of nearly every one of the station's antennas (see sidebar).
		Replaced were all 14 of W1AW's HF Yagis as well as Yagis for 2 meters and 70 cm.
		The 120-foot tower alone supports two Yagis for 40, three for 20, two for 15 and one for 10 meters.
	www.arrl.org /news/stories/2006/11/01/100 (841 words)

	Boatbuilder's Handbook - Part 1
		(c) The term practical cut-off means, for vessels 20 meters or more in length, 12.5 percent of the minimum luminous intensity (Table 84.15(b)) corresponding to the greatest range of visibility for which the requirements of Annex I are met.
		(c) The masthead light of a power-driven vessel of 12 meters but less than 20 meters in length shall be placed at a height above the gunwale of not less than 2.5 meters.
		On a vessel of 50 meters or more in length this forward anchor light shall be placed at a height or not less than 6 meters above the hull.
	www.uscgboating.org /safety/boatbuilder/part1/reg33_84b.htm (746 words)

	The Epoch Times \| Fossil Unearthed in China of Dinosaur over 20 Meters Long
		Judging by the length of the bone and the principle of proportionality, its body should be over 20 meters long.
		In the 40 square meters that have been excavated, 50 pieces of dinosaur fossils have been unearthed.
		Within the 2800 square meters excavated, almost 300 skeletons of ancient vertebrates, most of which were dinosaurs, were unearthed and sorted out.
	www.theepochtimes.com /news/5-10-7/33096.html (435 words)

	Noise on 20 meters? - Elmers Forum at eHam.net
		I have been monitoring SSB/CW on 30/20/17/10 meters with 3 different radios (IC R71-A, IC 706MKII, and IC 746PRO) using a tuned multi-band dipole, fed with RG-8X, limited space (and restrictions) up 25' high.
		During this time of the sun spot cycle, the higher HF freqs will not perform as well as 20 meters on most days.
		Since you say 30mtrs is also quieter than 20, I bet you are listening during the day when propagation favors the higher 14MC.
	www.eham.net /forums/Elmers/94298 (325 words)

	3 element Mono-band Yagi for 20 Meters
		It looked impossible to get a large beam for 20 meters up a tower, but it was something I always wanted.
		I was interested in a compact beam for the 20 CW part of the band.
		The boom is 5 meters long and 50mm diameters and 3 mm thick.
	www.antennex.com /preview/archive3/twrbeam.htm (686 words)

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