Talk:2182 kHz

Silence Period and Horlogery
First off, I got to this page through the horlogery category listing. I don't know if that's correct. Though the i believe the 2182kHz may refer to a "tick number", the number of repeated movements a watch makes per hour. Secondly, the article talks about a mandatory silence period but fails to mention why this is so.  Other than that I learned something new again :) --Jimius (talk) 11:05, 8 March 2009 (UTC)
 * I've added a sentence to explain the 'why'. Thanks for a good point - it may have been obvious to the original author, but if it's not so to the reader, then we can fix it! --Nigelj (talk) 21:52, 9 March 2009 (UTC)
 * BTW, "kHz" or "kilocycles" would mean that a quantity is in units of thousand per second, not per hour. 32.768kHz is the standard digital watch crystal, vibrating 32768 or 215 times per second. --66.102.80.212 (talk) 22:57, 17 March 2009 (UTC)

RANGE
In the RANGE section the article states: "At night a well equipped station can achieve INTRA-continental communication", this should be changed to INTER-continental. INTRA means within, INTER means between. An intra-continental communication is restricted to the same continent where the signal opriginated. INTER-continental means between one or more continents. —Preceding unsigned comment added by 207.7.74.74 (talk) 06:18, 9 March 2010 (UTC)
 * I think it was correct before - intercontinental communications generally requires a range of a few thousand miles. This is possible at frequencies like 14 MHz, but not in the 2 MHz band. Either way, the statement was unclear and uncited, so I have removed it. I left in the bit about lightning and other static as that is definitely true and provides the main limitation on range. It also shows why the range varies from night to night, so that hard-and-fast statements cannot really be made. Similarly for VHF, although high-pressure weather can produce extraordinary effects, the normal reliable range depends mostly on antenna height. --Nigelj (talk) 17:56, 9 March 2010 (UTC)

You wont get any layer skip with 2MHz, but you can get "intra-continental" distances depending on the xmit power. Small vessel power is limited to 100W RMS, which typically gives a max range of a few hundred kms. Ships may use up to 10kW which goes several thousand kms. The change to upper SSB was mandated in 1972.203.220.80.187 (talk) 01:43, 17 June 2016 (UTC)

Licensing
This section states: "In order to operate a marine radio transceiver on 2182 kHz, the operator must hold a GMDSS General Operating Certificate". this is incorrect. While a GMDSS Operator can operate a radio on 2182 KHz, this is not the only class of commercial operator authority. GROL, MROP, and the holders of Radiotelegraph license holders can also operate 2182 KHz radios.207.7.74.74 (talk) 06:49, 9 March 2010 (UTC)
 * This is probably a good point. Do you have a reference that confirms what you are saying? If so, please leave the URL here so we can have a look and adjust the wording accordingly. In the meantime, I'll try and squeeze "or equivalent" or some such wording into the article. --Nigelj (talk) 18:01, 9 March 2010 (UTC)

The first level of licensing (often termed radio proficiency certificate) should allow for any voice-modulated (telephony) signal from 2MHz up to VHF. HF is 100W max, and VHF is 25W max. Higher powers and teletext and Morse require higher licensing.203.220.80.187 (talk) 01:53, 17 June 2016 (UTC)

The information in this section seems to be specific to the UK. Tms (talk) 17:58, 13 July 2020 (UTC)

I second Tms's comment that the licenses named are UK-specific; and further, the comment that "In practice, an unqualified operator would not be prosecuted ..." seems rather too weak, as it's well codified in most (all?) countries that any person may use any frequency at any power in life-and-death emergencies. Sharkford (talk) 16:26, 7 January 2021 (UTC)


 * Can someone add a citation to a source that would facilitate prefacing the sentence with "In the UK..."? Thanks. - LuckyLouie (talk) 17:02, 8 January 2021 (UTC)