160 metres - Revision history

Carlb: /* Equipment */

2009-06-06T04:09:49Z

Equipment

← Older revision		Revision as of 21:09, 5 June 2009
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	Most amateur [[HF]] equipment supports the 160 metre band. However, it can be challenging to put up a full-size antenna on this band. Many operators use an [[inverted-L antenna]] for 160.		Most amateur [[HF]] equipment supports the 160 metre band. However, it can be challenging to put up a full-size antenna on this band. Many operators use an [[inverted-L antenna]] for 160.

			As one wavelength is one tenth of a mile, antennas tend to be large and require a large amount of land space, leaving fewer stations able to efficiently transmit on this band compared to the more popular [[HF]] frequencies. This smaller number of users has resulted in 160 metres being given the nickname of the "gentleman's band".

	== Modulation ==		== Modulation ==

Carlb: /* Propagation */

2009-06-06T04:05:20Z

Propagation

← Older revision		Revision as of 21:05, 5 June 2009
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	Radio communication on 160 metres is prone to extreme [[Propagation#Propagation_Theory_.28unfinished.29\|D-layer]] absorption during the day. This typically limits communication to 75 miles. At night, however, the [[Propagation#Propagation_Theory_.28unfinished.29\|D-layer]] weakens and contacts can be mode over thousands of kilometres. Like the [[HF]] bands, 160 metres usually supports such long-distance communication through [[refraction]] of signals via the [[Propagation#Propagation_Theory_.28unfinished.29\|F2 layer]].		Radio communication on 160 metres is prone to extreme [[Propagation#Propagation_Theory_.28unfinished.29\|D-layer]] absorption during the day. This typically limits communication to 75 miles. At night, however, the [[Propagation#Propagation_Theory_.28unfinished.29\|D-layer]] weakens and contacts can be mode over thousands of kilometres. Like the [[HF]] bands, 160 metres usually supports such long-distance communication through [[refraction]] of signals via the [[Propagation#Propagation_Theory_.28unfinished.29\|F2 layer]].

			Natural noise levels (QRN) are high on this band and signals are more vulnerable to impulse noise at low frequencies, rendering operation somewhat more difficult than on higher-frequency bands. The band had also long been subject to interference from marine navigation systems such as LORAN, although the replacement of these systems by GPS has largely eliminated this issue.

	==Australian Bandplan==		==Australian Bandplan==

Carlb: qualify "lowest-frequency band", UK has a small sliver of 136kc longwave

2009-06-06T03:52:14Z

qualify "lowest-frequency band", UK has a small sliver of 136kc longwave

← Older revision		Revision as of 20:52, 5 June 2009
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	}}		}}

	160 metres, often known as '''Top Band''', is technically a Medium Frequency (MF) band, the only one licensed to amateurs. It is slightly higher in frequency than the [[Modes#Amplitude Modulation (AM)\|AM]] broadcast band (540 kHz - 1600 kHz), and behaves similarly. 160 meters is the lowest-frequency band on which amateurs are licensed to operate.		160 metres, often known as '''Top Band''', is technically a Medium Frequency (MF) band, the only one licensed to amateurs. It is slightly higher in frequency than the [[Modes#Amplitude Modulation (AM)\|AM]] broadcast band (540 kHz - 1600 kHz), and behaves similarly. 160 meters is in many countries the lowest-frequency band on which amateurs are licensed to operate.

	== Equipment ==		== Equipment ==

Carlb: /* Australian Bandplan */

2009-04-09T03:20:06Z

Australian Bandplan

← Older revision		Revision as of 20:20, 8 April 2009
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	[[Image:Vk4yeh_vk_160m_bandplan.jpg]]		[[Image:Vk4yeh_vk_160m_bandplan.jpg]]


			{{bands}}

G7VRD at 16:45, 12 July 2008

2008-07-12T16:45:31Z

← Older revision		Revision as of 09:45, 12 July 2008
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	\|USA=1.800-2.000		\|USA=1.800-2.000
	\|UST=None		\|UST=None
			\|UK=1.81-2.0 (1.85 up sec.)
	}}		}}

G7VRD: Antenna -> Antennas

2008-07-12T16:16:41Z

Antenna -> Antennas

← Older revision		Revision as of 09:16, 12 July 2008
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	Related wiki pages [[Bands]], [[Propagation]] [[~~Antenna~~]]		Related wiki pages [[Bands]], [[Propagation]] [[Antennas]]

	{{Band		{{Band

TimVK4YEH: redirect f2-layer to propagation theory

2008-07-04T21:41:25Z

redirect f2-layer to propagation theory

← Older revision		Revision as of 14:41, 4 July 2008
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	== Propagation ==		== Propagation ==

	Radio communication on 160 metres is prone to extreme [[Propagation#Propagation_Theory_.28unfinished.29\|D-layer]] absorption during the day. This typically limits communication to 75 miles. At night, however, the [[Propagation#Propagation_Theory_.28unfinished.29\|D-layer]] weakens and contacts can be mode over thousands of kilometres. Like the [[HF]] bands, 160 metres usually supports such long-distance communication through [[refraction]] of signals via the [[F2 layer]].		Radio communication on 160 metres is prone to extreme [[Propagation#Propagation_Theory_.28unfinished.29\|D-layer]] absorption during the day. This typically limits communication to 75 miles. At night, however, the [[Propagation#Propagation_Theory_.28unfinished.29\|D-layer]] weakens and contacts can be mode over thousands of kilometres. Like the [[HF]] bands, 160 metres usually supports such long-distance communication through [[refraction]] of signals via the [[Propagation#Propagation_Theory_.28unfinished.29\|F2 layer]].

	==Australian Bandplan==		==Australian Bandplan==

TimVK4YEH: redirect d-layer to propagation theory

2008-07-04T21:40:45Z

redirect d-layer to propagation theory

← Older revision		Revision as of 14:40, 4 July 2008
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	== Propagation ==		== Propagation ==

	Radio communication on 160 metres is prone to extreme [[~~D layer~~\|D-layer]] absorption during the day. This typically limits communication to 75 miles. At night, however, the [[D-layer]] weakens and contacts can be mode over thousands of kilometres. Like the [[HF]] bands, 160 metres usually supports such long-distance communication through [[refraction]] of signals via the [[F2 layer]].		Radio communication on 160 metres is prone to extreme [[Propagation#Propagation_Theory_.28unfinished.29\|D-layer]] absorption during the day. This typically limits communication to 75 miles. At night, however, the [[Propagation#Propagation_Theory_.28unfinished.29\|D-layer]] weakens and contacts can be mode over thousands of kilometres. Like the [[HF]] bands, 160 metres usually supports such long-distance communication through [[refraction]] of signals via the [[F2 layer]].

	==Australian Bandplan==		==Australian Bandplan==

TimVK4YEH: internal links

2008-07-02T21:03:33Z

internal links

← Older revision		Revision as of 14:03, 2 July 2008
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			Related wiki pages [[Bands]], [[Propagation]] [[Antenna]]

	{{Band		{{Band
	\|band=160 meters		\|band=160 meters

TimVK4YEH: added vk bandplan

2008-07-01T18:12:45Z

added vk bandplan

← Older revision		Revision as of 11:12, 1 July 2008
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	Radio communication on 160 metres is prone to extreme [[D layer\|D-layer]] absorption during the day. This typically limits communication to 75 miles. At night, however, the [[D-layer]] weakens and contacts can be mode over thousands of kilometres. Like the [[HF]] bands, 160 metres usually supports such long-distance communication through [[refraction]] of signals via the [[F2 layer]].		Radio communication on 160 metres is prone to extreme [[D layer\|D-layer]] absorption during the day. This typically limits communication to 75 miles. At night, however, the [[D-layer]] weakens and contacts can be mode over thousands of kilometres. Like the [[HF]] bands, 160 metres usually supports such long-distance communication through [[refraction]] of signals via the [[F2 layer]].

			==Australian Bandplan==

			Access : Advanced licencees only

			1.800 - 1.810MHz Digital modes

			1.810 - 1.840MHz CW only

			1.840 - 1.875MHz SSB/AM

			[[Image:Vk4yeh_vk_160m_bandplan.jpg]]