[SixClub] Digital on 6 meters

Thu Mar 29 00:09:44 EST 2007

Les,
Would one want a bandplan to keep the 1kHz signals away from 100 kHz signal,
or 2.4 kHz signals, etc.?
So whatever is adopted, and hopefully with some changes to the proposal, we
would still need to put this 1kHz automatic stuff somewhere where its impact
would be minimized.  It is no different than the cases where we have
repeaters in the Pacific DX window.  Either we plan to avoid it or we can
plan to suffer through it, but that doesn't mean that we can't, with some
thought, accommodate different modes.
73,
Gordon Beattie, W2TTT
201.314.6964
W2ttt at att.net

-----Original Message-----
From: sixclub-bounces at mailman.qth.net
[mailto:sixclub-bounces at mailman.qth.net] On Behalf Of Les Zavadil
Sent: Wednesday, March 28, 2007 2:47 PM
To: World Wide Six Meter Club
Subject: Re: [SixClub] Digital on 6 meters

Bruce --     The widest commonly used digital modes from ATTENDED stations 
are Qlivia andf Contestia at 1KHz wide and the WinDRM and AOR Digital Voice 
modems with signals that are not any wider than a typical SSB signal.
    PACTOR III signals are over 2KHz wide, the automated (UNATTENDED) 
systems transmit these signals do not have the capability of detecting other

signals on the frequency and they will transmit when ready and repeat their 
tranmissions until correctly received and acknowledged by the other party.
    It seems to me that these robot signals are much more of an immediate 
interference threat to 6 meters than arbitrarily raising the maximum 
permissible bandwidth to 100 KHz, when there are currently not to my 
knowledge any  systems that wide being proposed.
    Maybe you are aware of some syetem that I haven't heard of yet.  --  
73  --  Les, W4FRA

 ----- Original Message ----- 
From: "bruce mallon" <wa4gch at yahoo.com>
To: "World Wide Six Meter Club" <sixclub at mailman.qth.net>
Sent: Wednesday, March 28, 2007 12:16
Subject: Re: [SixClub] Digital on 6 meters

> we are talking about 100 khz wide digital from 50.300
> - 54.00
>
>
> --- Les Zavadil <lzavadil at earthlink.net> wrote:
>
>> There is already digital on 6 Meters and has been
>> for a some time.  What we
>> don't want on 6 Meters are the automated, unattended
>> digital stations that
>> transmit whether the frequency is occupied or not.
>> WSJT meteor scatter,
>> PSK31, and other digital modes, transmitted by live
>> operators have been
>> peacefully existing on 6 Meters for some time.
>>
>> Les, W4FRA
>> Digital on Six # 313
>>
>> ----- Original Message ----- 
>> From: "bruce mallon" <wa4gch at yahoo.com>
>> To: <sixclub at mailman.qth.net>
>> Sent: Wednesday, March 28, 2007 10:22
>> Subject: [SixClub] Digital on 6 meters
>>
>>
>> >
>> > ARRL says they will have protection for LEGECY
>> modes
>> > but this is not true ........
>> >
>> >
>> > The BANDWIDTH one is RM-11306
>> >
>> > UNDER COMMENTS SAY YOU DO NOT WANT DIGITAL ON 6
>> METERS
>> > !
>> >
>> >
>> >
>> > http://gullfoss2.fcc.gov/prod/ecfs/upload_v2.cgi
>> >
>> >
>> >
>> > Let your voice be heard !
>> >
>> >
>> >
>> >
>> >
>> >
>> >
>>
>
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>> >
>>
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