Message-ID: <004401c9814d$a118ed00$0301a8c0@mal769a60aa920>
From: "mal hamilton" <g3kevmal@talktalk.net>
To: <rsgb_lf_group@blacksheep.org>
References: <004f01c9809a$708b5c30$0301a8c0@mal769a60aa920> <15F27D85CDCF44D08A47D3D50019AD5D@DR2> <00a701c980ac$47ecc7c0$0301a8c0@mal769a60aa920> <BLU146-W34B9A83C22AF33B3B1D2E7CFC80@phx.gbl>
Date: Wed, 28 Jan 2009 13:37:56 -0000
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Subject: Re: LF: Re: Re: PROPAGATION WSPR
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Is there any tfc list and exchange of traffic on the freq. I have hrd some 
ships calling although not recently on 500 khz, mostly far east ships.
mal/g3kev

----- Original Message ----- 
From: "Laurence BY3A-KL1X China" <hellozerohellozero@hotmail.com>
To: <rsgb_lf_group@blacksheep.org>
Sent: Wednesday, January 28, 2009 1:21 PM
Subject: RE: LF: Re: Re: PROPAGATION WSPR



Coastal stations are still running, well XSG on A1A is anyway on 522.5 
Hz  - Im not sure of the power Shanghai radio puts out but from field 
measurements its probably in the 1Kw range.

Laurence  - stuck in Singapore....








From: g3kevmal@talktalk.net
To: rsgb_lf_group@blacksheep.org
Date: Tue, 27 Jan 2009 18:22:58 +0000
Subject: LF: Re: Re: PROPAGATION WSPR




That is a more sensible power for MF. Coastal stns were running in excess of 
this power and ships between 1 - 2 kw so whats new.
Radio amateurs are at a disatvantage at present but could handle it, but 
appliance operators NO.
G3KEV



----- Original Message ----- 
From: dave.riley3
To: rsgb_lf_group@blacksheep.org
Sent: Tuesday, January 27, 2009 4:31 PM
Subject: LF: Re: PROPAGATION WSPR




NEWS FLASH
The NEHRS,Inc. has been granted by the FCC the call letter WNE for MF
CW operation on 472 KHz and 500 KHz at a maximum power of 5000 watts.
Hope some of you guys get your T2 license to run the station after
construction. As soon as the snow melts and temperatures rise a bit the
large vertical will be errected. My QTH can only be temporary so we
must find a permanent home ASAP.

73, Steve

WA1HUD

President NEHRS, Inc.
http://nehrs.net/default.aspx

----- Original Message ----- 
From: mal hamilton
To: rsgb
Sent: Tuesday, January 27, 2009 11:15 AM
Subject: LF: PROPAGATION WSPR


On LF  I do not think wspr is the correct mode to study propagation as 
suggested by some. Two procedures are required with the mode. First it has 
to be detected then analyised and decoded into a print format to be viewed. 
Morse sent in the QRS mode at a suitable speed between 1 and 120 sec dot 
only requires one procedure, to be detected and viewed and would give a good 
indication of propagation whether used for QSO purposed or otherwise.

I have pointed out recently that I have observed all of the traces from 
those transmitting WSPR and had the carrier been directly keyed in QRS mode 
an ID or intellegence would have been conveyed, whereas only part of the 
time was the signals decoded in wspr. For those viewing the print format 
only and getting no copy would never know whether the signall was being 
received or if it was faulty sampling and decoding.

Cut out the second procedure of decoding, avoid ambiguity and use the slow 
keyed carried method using morse code or murray code. A waterfall display 
and the EYE is a very sensitive detector,
For those experimenting with data modes have fun but todate in the amateur 
radio LF/MF context nothing yet has surpassed the use of slow morse keyed at 
a speed to suit one's needs ie propagation studies or communication between 
two stations.
mal/g3kev







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