How many OMs are able to radiate a CW signal on 630m that is audible in
a reasonable distance? Here in a radius of 1000km from central EU,
maybe 50?
How many of them would be even able to radiate a SSB signal that is
comfortable readable in some distance, so that at least a few SSB QSO
partners can be found? 10?
How many of them would be willing to populate the band for a longer
time (i.e. so that it it worth to discuss about SSB on MF), "job-,
XYL-, grandchildren-, neighbour-, motivation-, other projects-,
QRM/QRN-, WX-permitting"? X!
I guess that the number X is very close to 0!
There are a number of ideas for short experiments, now that the band is
new. Some of these experiments will be done. But the time that is spent
to discuss about these modes (and all the problems) will be longer than
the time the mode will be done.
I do not really expect problems from stations working SSB for a few
hours per year whose CW signal would be 10 dB above the noise in a 250
Hz CW bandwidth.
Lastly people will concentrate on exciting modes like CW, the rest will
come and go.
73, Stefan/DK7FC
Am 03.01.2013 03:06, schrieb [email protected]:
Hi Alan, Group,
Memories of QRM from SSB are still fresh in my mind. You certainly
don't need any endorsement from me, but I think your views are well
stated and should be heeded.
73
Joe VO1NA
On Thu, 3 Jan 2013, Alan Melia wrote:
Just a thought.....when it gets totally
washed out with SSB all 24 hours how are you going to clean it out?
People in general dont follow gentlemen's agreements they were not
party too.....and "it doesnt say I cant in the licence".
I fear that, though what you suggest would work, it might encourage
mayhem. I would prefer to see those who feel uncomfortable using a
morse key on other bands, improve their skill on 475 by not being under
HF-band like pressure. I dont listen there now but 10MHz used to be a
guide for what you can expect wher SSB is not actually banned from a
narrow band. Dont forget, to SSB-only ops CW is just interference. The
plus point is they will have to make a transverter first, but then a
few badly aligned tranverters on SSB could be a disaster. I think the
Swedish station was was Gus SM?BHZ, and the SSB wiped out several DX CW
qsos I knew of at the time. It was a commercial licence not an amateur
one, so voice ID may have been in the conditions.
Alan
G3NYK
----- Original Message -----
From: M0FMT
To: [email protected]
Sent: Thursday, January 03, 2013 12:30 AM
Subject: Re: LF: 477 A local SSB chat band ?
Hi Graham Geri and all
Warren has seen SSB first hand on the MF QRG and we have this side
also.There was an SM station (call sign forgotten?) in the early days
of 500 that added an SSB anouncement on his beacon and it worked well.
To my spec. :- "One SSB channel at the high edge of the band only used
during daylight hours no DXing!" add " Use VOX, no monologuing allowed"
to be a laissez faire operation no band plan, but fair play!.73 es GL
es HNY Pete M0FMT IO91UX
From: Graham <[email protected]>
To: [email protected]
Sent: Wednesday, 2 January 2013, 20:48
Subject: Re: LF: 477 A local SSB chat band ?
Geri
800 Hz B/W ... May be this is something 'Wolf' can code for
you ? a b/w compression / expansion module in SL , to limit the
tx b/w to 800 Hz must be possible to divide by 3 and mult
by 3 with a linear shift as well ?
G..
From: Holger 'Geri', DK8KW - DI2BO - W1KW
Sent: Wednesday, January 02, 2013 8:36 PM
To: [email protected]
Subject: Re: LF: 477 A local SSB chat band ?
Hi,
I kind of like the idea of an SSB channel. I just pulled out the
conditions of my first secial license for 160m from 1973 or 1974. That
said 1815 to 1835 kHz with 10 Watts in CW, additionally one SSB channel
for 1832 to 1835 kHz, so why not trying this on 630m, too? Here in
Germany we are currently limited to 800 Hz bandwidt but I am sure we
can sork towards a special license under certain conditions such as
daylight operation only .. sounds good to me!
Vy 73
Geri, DK8KW
----- Original Message -----
From: Graham
To: [email protected]
Sent: Wednesday, January 02, 2013 8:58 PM
Subject: Re: LF: 477 A local SSB chat band ?
Hi Pete
Its quite obvious that the allocation is quite able to
support normal armature activity , and why not ? its no longer
a experimental allocation , its just the same as 10 or top band
, un expected results today though ! ssb sounds odd , may be
as the path is stable , sstv ? must be a narrow mode , and
the 'new' digital voice is 2KHz , but that requires a linear
Tx path
As for the band edge
I'm straining to find a engineering reason , that wspr
and qrss has decided to run mid band ? Im sure users had a
reasonable discussion at the introduction of the band , to place
the modes at the edges , with live cw a the lower portion ? its
well know that these long carrier modes cause disruption to
other band users and are well placed at the band edges ,
'vanity beacons' is a term I have seen noted in referral, as
occupancy increases , by users not linked or even aware of
discussions taking place on these groups , i'm sure there will be
problems leading to the introduction of band plan's , for some
the plans form part of the licence conditions ..
Is Opera a vanity system ? , actually no, it compliments
ros- data mode in that the ave s/n readings can be used to
determine if a path will support the data mode , each having
the same averaging s/n reading taken along the time line ,
73 -G..
From: M0FMT
Sent: Wednesday, January 02, 2013 6:21 PM
To: [email protected]
Subject: Re: LF: 477 A local SSB chat band ?
Hi all
One SSB channel at the high edge of the band only used during
daylight hours no DXing!
73 es GL es HNY Pete M0FMT IO91UX
From: Graham <[email protected]>
To: [email protected]
Sent: Wednesday, 2 January 2013, 16:13
Subject: LF: 477 A local SSB chat band ?
Quite intriguing propagation on this 'new' band
From some unexpected early 600 mile + Opera decodes
last night , to several wspr TA decodes , [G8's again ..]
to today's test with Gary using USB-SSB voice ,
Where as at 1300z we had 5/9 signals each way as
expected over 25 miles , GI3PDN Ray , called on CW , to give
a report of 5/9 across the Irish Sea , some 100 miles for
our two signals , his CW also in the 5/9/9 region, one wonders
how far inland the signals travelled ?
After a short 3 way qso, we closed the test round 1330z
, may not of been quite as sociable after dark , but with a
small Ae , 40 x 70 ft iv L and 35 ft Top load vert , 50
watts pep , results defiantly superior to say 160 mtrs using
the same Ae's
73 -G
G0NBD
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