Message-ID: <7CAF11CF41AF460A8AD0DDF5EE5BB32D@AGB>
From: "Graham" <g8fzk@g8fzk.fsnet.co.uk>
To: <rsgb_lf_group@blacksheep.org>
References: <47C531A902A946C9BE2EEC5C6B7E2EF3@presario1> <B4B0E46364344221863F9B6A7249A44E@JimPC> <1775028CB7C146B496121BA36FB7093D@AGB> <146FC3C1737F42A38DA305D2D83EF4B3@JimPC>
In-Reply-To: <146FC3C1737F42A38DA305D2D83EF4B3@JimPC>
Date: Mon, 21 Sep 2009 20:21:53 +0100
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Subject: Re: LF: Re: US 500-kHz band plan
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That seems to  be a reasonable situation Jim ?.

After  running the wspr  system for a considerable time, with the  504 
carrier in the  pass band, it seems 'not' to cause false decodes as I 
originally feared, from this, I would  suggest that  the  top section of the 
band be retained for  wspr usage , possibly raising the dial set  100 hz ?

As I am 'fortunate' (?) to  receive  the 504  signal at a level where the 
'am'   modulation may be resolved at times , it can be observed that a 
clear window exists close in to the  carrier  frequency, approaching  100 hz 
wide, the  same exists on the  hf side of the signal, wide enough for wspr 
operations.

This may also  be beneficial to the  g4jnt multi mode beacon, which, due to 
antenna 'q'  may not  welcome a change of  tx frequency from  the top to the 
bottom of the  band dictated by mode ?

G ..

--------------------------------------------------
From: "James Moritz" <james.moritz@btopenworld.com>
Sent: Monday, September 21, 2009 7:30 PM
To: <rsgb_lf_group@blacksheep.org>
Subject: Re: LF: Re: US 500-kHz band plan

>
> Dear Graham, LF Group,
>
>> As the  European allocation looks to  be  wider than the  Uk, are we
>> expecting the  UK 3 Khz  allocation to  remain as is, if  and when the
>> band is formalised ?, in which case loosing 200 hz may not be the  most
>> sensible option ...
>
> As I understand it, there are not yet any formal Europe-wide proposals, 
> just
> what individual regulators have allocated on a case-by-case basis. I think
> G, EI, and ON have all allocated 501 - 504. The DL beacons and OK0EMW are
> licenced to use spot frequencies around 505kHz. Gus SM6BHZ would be able 
> to
> use 504.0 - 504.1kHz.
>
>>
>> As by definition , if you  can transmit wspr  you  must be  able to  move
>> transmit  frequency (noting Andy's new beacon) establishing an over
>> lapping 100 hz section may be a reasonable  compromise ie move the  dial
>> frequency to say  502.5  or  499.5 , leaving 100 hz in band for uk access
>>
>
>
>
>
>
>
>>
>> --------------------------------------------------
>> From: "James Moritz" <james.moritz@btopenworld.com>
>> Sent: Monday, September 21, 2009 2:14 PM
>> To: <rsgb_lf_group@blacksheep.org>
>> Subject: LF: Re: US 500-kHz band plan
>>
>>>
>>> Dear LF Group,
>>>
>>> I still haven't replied to Fritz Raab, W1FR, regarding the WD2XSH US 
>>> band
>>> plan which he is apparently coordinating - you may remember I posted the
>>> US
>>> proposals, which he sent me, a couple of weeks ago, but have not 
>>> received
>>> any comments from other UK/Eu stations. I think I should reply with
>>> something, so now is your chance... The proposal relates to the US
>>> allocation extending to 495 - 515kHz, and how that would fit in with
>>> current
>>> UK and Eu beacon operations. The content of the e-mail is below. The
>>> issue
>>> is that they would like to make a 501.0 - 501.2kHz WSPR sub-band, to fit
>>> in
>>> with the various other proposals. Various other types of beacon modes 
>>> are
>>> allocated frequencies outside the UK/EI/ON 501 - 504kHz range, while
>>> 501.2 -
>>> 504kHz is allocated to "general comms". Retaining frequencies just below
>>> 504kHz would divide their "general comms" band in two
>>>
>>> I don't think there is anything preventing us from doing this, it is 
>>> just
>>> the inconvenience of turning the current band "upside-down". Let me know
>>> what you think!
>>>
>>> Cheers, Jim Moritz
>>> 73 de M0BMU
>>>
>>>>>>From W1FR:
>>>
>>> Greetings:
>>>
>>>     Thanks for the comments on the band plan, passed
>>> along to me by W1XP.
>>>
>>>     About a month ago, a modification to the WD2XSH
>>> license was approved that adds stations and gives us
>>> access to 495 - 510 kHz.  Perhaps half of the 42 stations
>>> will eventually get on the air.  Because of NDBs, some
>>> stations are limited to parts of this band and we will
>>> have two calling frequencies and two beacon bands.
>>>
>>>     A draft of our new band plan follows.  Of particular
>>> interest is WSPR.  As I see it, our options are:
>>>
>>> (a)  501.0-501.2:  Conveniently on one side of our comms
>>>     band.  Will not overload WSPR receivers near 504 kHz.
>>>     Apparently in EU CW-beacon band.
>>>
>>> (b)  503.8-504.0:  Apparently same as what you guys are
>>>     using.  Cuts our comms band in the middle.  Nearby
>>>     stations may overload US receivers trying to hear EUs.
>>>
>>> (c)  503.9-504.1:  Same problems as above with cutting
>>>     comms band in two and overloading.  Conveniently
>>>     straddles both G/ON/EI and Canadian bands.
>>>
>>>     Any further thoughts you may have will be
>>> appreciated.
>>>
>>>
>>> 73, Fritz, W1FR
>>>
>>> Frederick H. (Fritz) Raab, Ph.D.
>>> GREEN MOUNTAIN RADIO RESEARCH COMPANY
>>> 77 Vermont Avenue, Fort Ethan Allen
>>> Colchester, Vermont 05446  USA
>>> Tel./Fax.:  +1 (802) 655-9670  Home:  +1 (802) 862-0997
>>> E-mail:  f.raab@ieee.org
>>>
>>> BASIC BAND PLAN for WD2XSH
>>>
>>> f, kHz          USE
>>>
>>> 495.0 - 495.1   QRSS, 1-Hz spacing, 40 stations
>>> 495.1 - 495.6   CW/PSK beacons midwest, 100-Hz spacing, 10 stations
>>> 495.6 - 499.0   Comms
>>> 497.5           Calling frequency
>>> 499.0 - 501.0   Reserved for heritage stations and special events
>>> 501.0 - 501.2   WSPR
>>> 501.2 - 505.0   Comms
>>> 505.0 - 505.2   DX window
>>> 505.2 - 508.5   Comms
>>> 507.5           Calling frequency
>>> 508.5 - 510.0   CW/PSK beacons east, south, west, Pacific, 50-Hz 
>>> spacing,
>>> 30
>>> stations
>>> 510.0 - 511.0   WE2XGR beacons
>>> 511.0 - 515.0   WE2XGR SSB and wideband modes
>>>
>>>
>>> OTHER IN-BAND SIGNALS
>>>
>>> 503.976         NEED LSB
>>> 505.0           NEED carrier
>>> 506.024         NEED USB
>>>
>>> 508.976         OF/FA LSB
>>> 510.0           OF/FA carrier
>>> 511.024         OF/FA USB
>>>
>>>
>>>
>>
>>
>>
>>>
>>> No virus found in this incoming message.
>>> Checked by AVG - www.avg.com
>>> Version: 8.5.409 / Virus Database: 270.13.109/2384 - Release Date:
>>> 09/20/09 06:22:00
>>>
>>
>>
>>
>
>
>



>
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> 09/21/09 05:51:00
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