From: "Clemens Paul" <cpaul@gmx.net>
To: <rsgb_lf_group@blacksheep.org>
Cc: <rsgb_lf_group@yahoogroups.co.uk>
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Date: Wed, 2 Jan 2013 22:59:20 +0100
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Subject: RE: LF: 477   A local  SSB  chat  band  ?
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Hi Gery,
=20
depending on the antenna/matching sytem Q some might have a SWR-BW
issue,i.e. not enough bandwidth (3kHz) with a decent swr
for SSB.
Lossy sytems would be better in this respect...
I remember a QSO on 160m with a German OM using the famous (in Germany)
Siemens tuned loop antenna (circumference about 8m and very
wide conductor diameter) which was used by military and =
Bundesgrenzschutz.
He tuned to SWR 1.0 with a CW carrier but when he started talking in SSB =
SWR
went up to >3 and output power
of the TRX  was folded back.
There is a 1.1kHz wide digital SSB mode called FreeDV=20
http://freedv.org/tiki-index.php
My personal experience with that mode seems not very promising.
You need at least 10dB SNR for a stable decoding and the voice sounds =
like
from a robot.=20
=20
73
Clemens
DL4RAJ=20


________________________________

	From: owner-rsgb_lf_group@blacksheep.org
[mailto:owner-rsgb_lf_group@blacksheep.org] On Behalf Of Holger 'Geri',
DK8KW - DI2BO - W1KW
	Sent: Wednesday, January 02, 2013 9:37 PM
	To: rsgb_lf_group@blacksheep.org
	Subject: Re: LF: 477 A local SSB chat band ?
=09
=09
	Hi,
	=20
	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!
	=20
	Vy 73
	=20
	Geri, DK8KW
	=20

		----- Original Message -----=20
		From: Graham <mailto:g8fzk@g8fzk.fsnet.co.uk> =20
		To: rsgb_lf_group@blacksheep.org=20
		Sent: Wednesday, January 02, 2013 8:58 PM
		Subject: Re: LF: 477 A local SSB chat band ?

		Hi Pete
		=20
		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 =20
		=20
		As  for  the  band edge=20
		=20
		 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 ..
		=20
		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  ,=20
		=20
		73 -G..
		=20
		=20
		=20
		=20
		=20
		=20
		=20
	=09
	=09
		From: M0FMT <mailto:m0fmt@yahoo.co.uk> =20
		Sent: Wednesday, January 02, 2013 6:21 PM
		To: rsgb_lf_group@blacksheep.org=20
		Subject: Re: LF: 477 A local SSB chat band ?

		Hi all
		=20
		One SSB channel at the high edge of the band only used
during daylight hours no DXing!
	=09
	=09
		73 es GL es HNY Pete M0FMT IO91UX
	=09

						From: Graham
<g8fzk@g8fzk.fsnet.co.uk>
			To: rsgb_lf_group@blacksheep.org=20
			Sent: Wednesday, 2 January 2013, 16:13
			Subject: LF: 477 A local SSB chat band ?
		=09

			Quite  intriguing  propagation  on this  'new'  band

			=20
			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 ,=20
			=20
			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  ?
			=20
			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=20
			=20
			73 -G
			G0NBD
			=20
			=20
			=20



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