Return-Path: Received: from rly-md07.mx.aol.com (rly-md07.mail.aol.com [172.20.29.145]) by air-md02.mail.aol.com (v125.7) with ESMTP id MAILINMD024-9154ab4b5fa38f; Sat, 19 Sep 2009 06:44:33 -0400 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by rly-md07.mx.aol.com (v125.7) with ESMTP id MAILRELAYINMD075-9154ab4b5fa38f; Sat, 19 Sep 2009 06:44:11 -0400 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1MoxPU-00028v-Pv for rs_out_1@blacksheep.org; Sat, 19 Sep 2009 11:43:20 +0100 Received: from [193.82.116.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1MoxPU-00028m-3D for rsgb_lf_group@blacksheep.org; Sat, 19 Sep 2009 11:43:20 +0100 Received: from blu0-omc1-s18.blu0.hotmail.com ([65.55.116.29]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1MoxOK-0006WW-Ky for rsgb_lf_group@blacksheep.org; Sat, 19 Sep 2009 11:42:10 +0100 Received: from BLU146-W30 ([65.55.116.7]) by blu0-omc1-s18.blu0.hotmail.com with Microsoft SMTPSVC(6.0.3790.3959); Sat, 19 Sep 2009 03:43:03 -0700 Message-ID: X-Originating-IP: [60.27.206.2] From: Laurence BY3A-KL1X China To: Date: Sat, 19 Sep 2009 02:43:03 -0800 Importance: Normal In-Reply-To: References: MIME-Version: 1.0 X-OriginalArrivalTime: 19 Sep 2009 10:43:03.0566 (UTC) FILETIME=[F710F2E0:01CA3915] X-Karma: unknown: X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,HTML_MESSAGE=0.001 Content-Type: multipart/alternative; boundary="_80932dfe-5a21-47c9-afac-819e3cabc5d8_" Subject: LF: 500 still in use? (2) X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.1 required=5.0 tests=CLICK_BELOW, FORGED_HOTMAIL_RCVD,HTML_LINK_CLICK_HERE,HTML_MESSAGE autolearn=no version=2.63 X-SA-Exim-Scanned: Yes Sender: owner-rsgb_lf_group@blacksheep.org Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group X-SA-Exim-Rcpt-To: rs_out_1@blacksheep.org X-SA-Exim-Scanned: No; SAEximRunCond expanded to false X-AOL-IP: 193.82.116.20 X-Mailer: Unknown (No Version) --_80932dfe-5a21-47c9-afac-819e3cabc5d8_ Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Thanks Jim - I have to keep tabs myself at work whats actually happening= in this domain and theatre (in more ways than one) - I guess Ill see the= next release of a Chinese text Navtex receiver probably in a couple of we= eks down the local market. The interesting thing is the guys down the road= are actually testing on 484 not 486 and we have this lovely asssigned ver= sus carrier debacle that crops up now and again - some say 2 some 2.1 Khz= off set etc etc. I didnt go into that with the station manager there but= its going to be interesting - I still recall of lot of my miltary radio= days with the PRC series used to keep my head scratching a lot on what I= was really transmitting on...still do. =20 I picked up the China bit from http://www.iho.shom.fr/COMMITTEES/CPRNW/CPRNW9/CPRNW9-3-3-1.pdf and they cite here and else where the issues of limiting power cos of co= channel. =20 My local Navtex station is some 100 miles from here and luckily theyve got= the tuning right - it can be a bit of a mess, and I recall some of the aw= ful tuned Navtex transmissions that plagued me in Singapore marine trying= to listen on 500 -=20 =20 I do miss awfully the musical and not so musical A2 sounds when I was at= sea....Argh Jim lad - isnt it talk like a pirate day too? =20 The noise is kicking up a bit even on 500 but will be looking your way thi= s evening on WSPR and the speaker open for Mal. =20 Laurence KL1 X in BY3A OM89UA China. =20 =20 =20 =20 > From: james.moritz@btopenworld.com > To: rsgb_lf_group@blacksheep.org > Date: Sat, 19 Sep 2009 11:09:06 +0100 > Subject: LF: Re: 500 still in use? >=20 > Dear Laurence, LF Group, >=20 > The 468kHz frequency does seem to be slated for Chinese Navtex broadcast= s -=20 > apparently 424kHz is being used for Japanese language Navtex too. This= seems=20 > to coincide with a general shift to using 490kHz for Navtex weather=20 > forecasts instead of "local language" as it was originally supposed to= be. >=20 > I beleive the international agreements relating to Navtex say that "no= more=20 > than 1kW" should be used for Navtex broadcasts, and then only under=20 > exceptional circumstances, in order to minimise mutual QRM. but if you= look=20 > at manufacturer's TX offerings, you will struggle to find one less than= 1kW.=20 > Fun for DXers, I suppose, but not so clever when you actually need the= info! >=20 > Several years ago when a 500kHz allocation was first mooted, I spent som= e=20 > time listening to 500kHz, and most nights used to hear Italian coast=20 > stations - IAR was one I think. They would appear on 500k and tell you= to=20 > QSY to some nearby frequency. When you did so they would broadcast a lon= g=20 > list of ships' callsigns, I presume who they had traffic for. But I neve= r=20 > did hear any 2-way operating, and got the impression the whole thing was= =20 > computer generated. I haven't heard these coast stations since about 200= 3,=20 > or maybe before. >=20 > Cheers, Jim Moritz > 73 de M0BMU >=20 > ----- Original Message -----=20 > From: "Laurence BY3A-KL1X China" > To: > Sent: Saturday, September 19, 2009 9:40 AM > Subject: LF: 500 still in use? >=20 >=20 >=20 >=20 >=20 > Im asked whether 500kcs or kHz etc is still in use here and yes it is -= =20 > heres a TTT TTT Nav warning on 500.00 Khz at Hr +18 from XSV Tianjin rad= io=20 > about 15 miles from me just a few mins ago. >=20 >=20 >=20 > I dont hear Ship to Ship or Ship to Shore on MF, or should I say I haven= t=20 > yet and none of my ships or platforms are equipped here, but the Chinese= =20 > announced back in 2007 that 486 Khz (assigned) is to be used for a "Nati= onal=20 > language channel" - Im not sure if this relates to safety traffic/navtex= or=20 > gen bsct - or whatever, but Tianjin is just increasing its output power= on=20 > that freq to 5Kw, and dont I know it. >=20 >=20 >=20 _________________________________________________________________ Ready for Fall shows? Use Bing to find helpful ratings and reviews on digi= tal tv's. http://www.bing.com/shopping/search?q=3Ddigital+tv's&form=3DMSHNCB&publ=3D= WLHMTAG&crea=3DTEXT_MSHNCB_Vertical_Shopping_DigitalTVs_1x1=3D --_80932dfe-5a21-47c9-afac-819e3cabc5d8_ Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Thanks Jim - I have to keep tabs myself at work whats actually happen= ing in this domain and theatre (in more ways than one) - I guess Ill= see the next release of a Chinese text Navtex receiver probably in= a couple of weeks down the local market. The interesting thing is th= e guys down the road are actually testing on 484 not 486 and we have= this lovely asssigned versus carrier debacle that crops up now and= again - some say 2 some 2.1 Khz off set etc etc. I didnt go into tha= t with the station manager there but its going to be intere= sting - I still recall of lot of my miltary radio days with the PRC= series used to keep my head scratching a lot on what I was really transmi= tting on...still do.
 
I picked up the China bit from
http://www.iho.shom.fr/COMMITTEES/CPRNW/CPRNW9/CPRNW9-3-3-1.pdf
and they cite here and else where the issues of limiting power cos of co= channel.
 
My local Navtex station is some 100 miles from here and luckily theyve got= the tuning right - it can be a bit of a mess, and I recall some of the aw= ful tuned Navtex transmissions that plagued me in Singapore marine trying= to listen on 500 -
 
I do miss awfully the musical and not so musical A2 sounds when I was at= sea....Argh Jim lad - isnt it talk like a pirate day too?
 
The noise is kicking up a bit even on 500 but will be looking your way thi= s evening on WSPR and the speaker open for Mal.
 
Laurence
KL1 X in BY3A
OM89UA China.
 
 
 
 
> From: james.moritz@btopenworld.com
> To: rsgb_lf_grou= p@blacksheep.org
> Date: Sat, 19 Sep 2009 11:09:06 +0100
> Sub= ject: LF: Re: 500 still in use?
>
> Dear Laurence, LF Group,<= BR>>
> The 468kHz frequency does seem to be slated for Chinese= Navtex broadcasts -
> apparently 424kHz is being used for Japanese= language Navtex too. This seems
> to coincide with a general shift= to using 490kHz for Navtex weather
> forecasts instead of "local= language" as it was originally supposed to be.
>
> I beleive= the international agreements relating to Navtex say that "no more
>= ; than 1kW" should be used for Navtex broadcasts, and then only under
= > exceptional circumstances, in order to minimise mutual QRM. but if yo= u look
> at manufacturer's TX offerings, you will struggle to find= one less than 1kW.
> Fun for DXers, I suppose, but not so clever= when you actually need the info!
>
> Several years ago when= a 500kHz allocation was first mooted, I spent some
> time listenin= g to 500kHz, and most nights used to hear Italian coast
> stations= - IAR was one I think. They would appear on 500k and tell you to
>= QSY to some nearby frequency. When you did so they would broadcast a long=
> list of ships' callsigns, I presume who they had traffic for. Bu= t I never
> did hear any 2-way operating, and got the impression th= e whole thing was
> computer generated. I haven't heard these coast= stations since about 2003,
> or maybe before.
>
> Che= ers, Jim Moritz
> 73 de M0BMU
>
> ----- Original Messag= e -----
> From: "Laurence BY3A-KL1X China" <hellozerohellozero@h= otmail.com>
> To: <rsgb_lf_group@blacksheep.org>
> Se= nt: Saturday, September 19, 2009 9:40 AM
> Subject: LF: 500 still in= use?
>
>
>
>
>
> Im asked whethe= r 500kcs or kHz etc is still in use here and yes it is -
> heres a= TTT TTT Nav warning on 500.00 Khz at Hr +18 from XSV Tianjin radio
&g= t; about 15 miles from me just a few mins ago.
>
>
>=
> I dont hear Ship to Ship or Ship to Shore on MF, or should I say= I havent
> yet and none of my ships or platforms are equipped here= , but the Chinese
> announced back in 2007 that 486 Khz (assigned)= is to be used for a "National
> language channel" - Im not sure if= this relates to safety traffic/navtex or
> gen bsct - or whatever,= but Tianjin is just increasing its output power on
> that freq to= 5Kw, and dont I know it.
>
>
>

Ready= for Fall shows? Use Bing to find helpful ratings and reviews on digital= tv's. Click here. =3D --_80932dfe-5a21-47c9-afac-819e3cabc5d8_--