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Date: Wed, 20 Aug 2008 10:47:07 +0000 (GMT)
From: M0FMT <m0fmt@yahoo.co.uk>
To: rsgb_lf_group@blacksheep.org
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Subject: Re: LF: Keyboard and Key Modes for 600 Meters
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For you information
=C2=A0
For about two weeks now, on an ad hock basis M0FMT and M0JXM have a QSO on 5=
00kc/s between 11:30 / 12:00 noon each week day we are located North Herts/=20=
South Beds area. Slow hand sent CW and occasional RTTY 85Hz shift plus 23 hz=
 experiments=C2=A0at 45.45 Bauds. We also listen out for other stations but=20=
nothing heard to date.
=C2=A0
Also there is a regular CW Slow and normal speed=C2=A0plus RTTY QSO sessions=
 on Saturday and Sunday mornings in this area between G3XIZ , M0JXM and M0FM=
T. Again with different Shifts.
=C2=A0I have also been trying out 150 / 200 Bauds rates=C2=A0using relay shi=
fter=C2=A0in an attempt to prove a small relay can actually track that=C2=
=A0Baud rate this is not really intended=C2=A0for serious use on 500kc/s but=
 I mention it to alert any who may have heard this signal and wonder what=
=C2=A0the H.... it is. I have also been sending=C2=A0(Attended) beacon trans=
missions at very slow Baud rates, basically for the aforementioned stations=20=
to try and decode.
=C2=A0
However our prime aim is=C2=A0hand sent, pump or bug, CW. Chris XIZ I know i=
s heard well but my self and Dennis not so well but we do get mailed reports=
=C2=A0of being heard by NoV holders and casual listeners to the band.=C2=A0
=C2=A0
So although not rare DX the 500Kc/s band is in regular use in this area alon=
g with TX and Rx building for the band. Also a lot of listening is being don=
e over the 500 to 505 region with disccusion of what has been heard on top b=
and AM net nearly every=C2=A0week day night from=C2=A019:00 to 20:00 on abou=
t 1,9920kc/s +/-=C2=A0
=C2=A0
I don't think we see the band in this area as being as Bleak as some would s=
uggest but there is no doubt we do need more activity may be a calling time=20=
of say 20:00 hrs each night for 15 / 30 minutes so at least people know when=
 they=C2=A0are most likely to=C2=A0hear activity=C2=A0

73 petefmt
--- On Tue, 19/8/08, Graham <g8fzk@g8fzk.fsnet.co.uk> wrote:

From: Graham <g8fzk@g8fzk.fsnet.co.uk>
Subject: LF: Keyboard Modes for 600 Meters
To: rsgb_lf_group@blacksheep.org
Date: Tuesday, 19 August, 2008, 7:33 PM

Interesting list of modes and tests ,


''Comments: Several European operators ++  have experimented with 45
Baud=20
RTTY using a narrow 23 Hz shift, with decent results. Our tests, however,=20
had limited success when compared to the various PSK or multitone FSK modes.=
=20
Given good signal strengths with little fading, you'll have good results
and=20
will be hard-pressed to keep ahead of its typing buffer. I tried a 200 Hz=20
shift on a closed-circuit basis, and the weak signal performance was worse.=20
''

I had the idea that the narrow olivia  test gave the best print over=20
distance , dose it not send more than one tone at any one  time and=20
therefore require a linear transmission system ? was some chatter (not=20
monkey -please) that even the phase continuous modes like wspr actually need=
=20
a linear system to  maintain    modulation architecture and to  prevent the=20
generation of 'gray noise' ??


http://www.w1tag.com/600M_Modes.htm

G ..


PS: ++  must mean you and me Gary  :)=20





Send instant messages to your online friends http://uk.messenger.yahoo.com=20

--0-1892790275-1219229227=:95429
Content-Type: text/html; charset=utf-8
Content-Transfer-Encoding: quoted-printable

<table cellspacing=3D"0" cellpadding=3D"0" border=3D"0" ><tr><td valign=3D"t=
op" style=3D"font: inherit;"><DIV>For you information</DIV>
<DIV>&nbsp;</DIV>
<DIV>For about two weeks now, on an ad hock basis M0FMT and M0JXM have a QSO=
 on 500kc/s between 11:30 / 12:00 noon each week day we are located North He=
rts/ South Beds area. Slow hand sent CW and occasional RTTY 85Hz shift plus=20=
23 hz experiments&nbsp;at 45.45 Bauds. We also listen out for other stations=
 but nothing heard to date.</DIV>
<DIV>&nbsp;</DIV>
<DIV>Also there is a regular CW Slow and normal speed&nbsp;plus RTTY QSO ses=
sions on Saturday and Sunday mornings in this area between G3XIZ , M0JXM and=
 M0<SPAN>FMT</SPAN>. Again with different Shifts.</DIV>
<DIV>&nbsp;I have also been trying out 150 / 200 Bauds rates&nbsp;using rela=
y shifter&nbsp;in an attempt to prove a small relay can actually track that&=
nbsp;Baud rate this is not really intended&nbsp;for serious use on 500kc/s b=
ut I mention it to alert any who may have heard this signal and wonder what&=
nbsp;the H.... it is. I have also been sending&nbsp;(Attended) beacon transm=
issions at very slow Baud rates, basically for the aforementioned stations t=
o try and decode.</DIV>
<DIV>&nbsp;</DIV>
<DIV>However our prime aim is&nbsp;hand sent, pump or bug, CW. Chris XIZ I k=
now is heard well but my self and Dennis not so well but we do get mailed re=
ports&nbsp;of being heard by NoV holders and casual listeners to the band.&n=
bsp;</DIV>
<DIV>&nbsp;</DIV>
<DIV>So although not rare DX the 500Kc/s band is in regular use in this area=
 along with TX and Rx building for the band. Also a lot of listening is bein=
g done over the 500 to 505 region with disccusion of what has been heard on=20=
top band AM net nearly every&nbsp;week day night from&nbsp;19:00 to 20:00 on=
 about 1,9920kc/s +/-&nbsp;</DIV>
<DIV>&nbsp;</DIV>
<DIV>I don't think we see the band in this area as being as Bleak as some wo=
uld suggest but there is no doubt we do need more activity may be a calling=20=
time of say 20:00 hrs each night for 15 / 30 minutes so at least people know=
 when they&nbsp;are most likely to&nbsp;hear activity&nbsp;<BR></DIV>
<DIV>73 petefmt<BR>--- On <B>Tue, 19/8/08, Graham <I>&lt;g8fzk@g8fzk.fsnet.c=
o.uk&gt;</I></B> wrote:<BR></DIV>
<BLOCKQUOTE style=3D"PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: rgb(1=
6,16,255) 2px solid">From: Graham &lt;g8fzk@g8fzk.fsnet.co.uk&gt;<BR>Subject=
: <SPAN>LF</SPAN>: Keyboard Modes for 600 Meters<BR>To: rsgb_lf_group@blacks=
heep.org<BR>Date: Tuesday, 19 August, 2008, 7:33 PM<BR><BR><PRE>Interesting=20=
list of modes and tests ,


''Comments: Several European operators ++  have experimented with 45
Baud=20
RTTY using a narrow 23 Hz shift, with decent results. Our tests, however,=20
had limited success when compared to the various PSK or multitone FSK modes.=
=20
Given good signal strengths with little fading, you'll have good results
and=20
will be hard-pressed to keep ahead of its typing buffer. I tried a 200 Hz=20
shift on a closed-circuit basis, and the weak signal performance was worse.=20
''

I had the idea that the narrow olivia  test gave the best print over=20
distance , dose it not send more than one tone at any one  time and=20
therefore require a linear transmission system ? was some chatter (not=20
monkey -please) that even the phase continuous modes like wspr actually need=
=20
a linear system to  maintain    modulation architecture and to  prevent the=20
generation of 'gray noise' ??


http://www.w1tag.com/600M_Modes.htm

G ..


PS: ++  must mean you and me Gary  :)=20



</PRE></BLOCKQUOTE></td></tr></table><br>Send instant messages to your onlin=
e friends http://uk.messenger.yahoo.com=20

--0-1892790275-1219229227=:95429--