The frequency is time-shared with W1AW and it has been frequency
coordinated with the Winlink2000 network.
Time-sharing is the nature of operating in an Automatic Subband.
Any other questions?
Bonnie KQ6XA
--- In digitalradio@yahoogroups.com, John Bradley <[EMAIL PROTECTED]> wrote:
>
> Pardon
For informal reference purposes, here is a listing resulting
from frequency coordination and re-arranging of nets and
operating frequencies that has been going on since the new
USA 80 meter sub-bands went into effect. This listing has been
gathered and coordinated through a combination of direc
The only Coodination I see is WINLINK trying to grab
all the available Frequencies
Food fight? Enjoy some healthy debate
in the Yahoo! Answers Food & Drink Q&A.
http://answers.yahoo.com/dir/?link=list&sid=39
Has anyone tried using either a 250 Hz or 500 Hz filter for PSK31
reception? My Icom IC-746 (non-Pro) has no filters installed, and is
wide as a barn door on USB for PSK31. I wondered if either of these
filters would help, or would they be too narrow?
The pass-band shift does a fair job of elim
And they may well do just that.
Joe
W4JSI
- Original Message -
From: Rick Scott
To: digitalradio@yahoogroups.com
Sent: Wednesday, March 07, 2007 12:41 PM
Subject: Re: [digitalradio] 3580kHz-3600kHz Freq Coordination Info
The only Coodination I see is WINLINK trying to gra
--- In digitalradio@yahoogroups.com, Rick Scott <[EMAIL PROTECTED]> wrote:
>
> The only Coodination I see is WINLINK trying to grab
> all the available Frequencies
Hi Scott,
There is no grab happening. Everyone has to operate somewhere in this
small band. Since the sub-band changes are fairly new
Its a good day for digital DXing!
73,
Dave, AA6YQ
Hi Dave,
Yes, the narrower filters will help a great deal. I have an ICOM rig
that needs to be centered on 1500 Hz when operating in SSB modes so I
try and move them to that point if I can. Then I have DSP filters that
enable me to close the "window" as tight as I need to. I also have Twin
PBT
Thanks, Rick. The 500 Hz makes sense, since some of the modes are over 250
Hz. I have the twin passband, too, but it's just not as effective as I'd
like. The APF/ANF on the non-Pro works great on CW, and with just the APF
on narrow, I can narrow the passband down to around 30 Hz, but that
doesn't
> -Ursprüngliche Nachricht-
> Von: digitalradio@yahoogroups.com
> Gesendet: 07.03.07 19:42:54
> An: digitalradio@yahoogroups.com
> Betreff: Re: [digitalradio] 3580kHz-3600kHz Freq Coordination Info
>
> The only Coodination I see is WINLINK trying to grab
> all the available Frequencies
We generally use 300 Hz filters for PSK125 and they are too wide.
There is no substitute for good narrow Xtal filters.
I don't understand how you can try to work PSK31 (50 Hz bandwidth) with a 2.7
kHz filter.
That is against all logic (and math).
We recommand using the narrowest filters you can g
I have a hard time visualizing the need for a narrow filter, for such narrow
modes. You can sit, in PSK for instance, slap up against another PSK signal
and still copy much weaker signals. Thats the whole purpose of the narrow
band digital modes to start with. I use WinWarbler (now) to do my digi
Other strong signals in the passband of the IF will densense the
following stages and cause AGC action. If you have no AGC, then you
will overdrive the sound card audio stage with the strong signal in an
attempt to copy the wreak one.
The DSP filter in ICOM rigs is at the IF level and is accomp
Thanks, Rein, for confirming what I suspected. For a fixed
frequency/mode such as pskmail, I'd have to agree completely, but for
general use, such as me running PSK31 for one QSO, maybe RTTY for
another, and Olivia for yet another, I think the 500 Hz would probably
be my best option.
Tnx e
Ok I knew there must be some reason, for all the people yelling for it, but
have never suffered that particular problem, and if I did I would be
flummuxed, as I use the broadband PSK copy all the time.
Danny Douglas N7DC
ex WN5QMX ET2US WA5UKR ET3USA
SV0WPP VS6DD N7DC/YV5 G5CTB all
DX 2-6 years ea
Thanks, Danny, but the key to what you said is "Todays rigs, with
their dsp filtering...". My 746 is the non-Pro version, and does not
have the DSP filtering at all. In USB mode, the bandwidth is greater
than 2.6 Khz. Yes, given two signals of around S-5 that are side by
side, I can copy eit
Hi Rick/Dave,
When the copy gets tough I use a 350hz (-6db) ICOM
FL-232 filter in my ICOM-706mkII for copying Olivia
16tones/500hz. The filter skirts are not sharp so it
works ok.
I used that setup to copy Juergen DL8LE and Massimo
IZ0GKZ recently on those EU/NA tests on 160m.
Drats, I was going to skip work early and head homehope I can find 'em.
Andy K3UK
On 3/7/07, Dave Bernstein <[EMAIL PROTECTED]> wrote:
Its a good day for digital DXing!
73,
Dave, AA6YQ
--
Andy K3UK
Skype Me : callto://andyobrien73
www.obriensweb.com
I agee with Danny and don't quite "get" what Leigh is saying.
Dave's question is an interesting one because with my 3-week old DSP capable
rig I, have been experimenting with the issue Dave raised. I have the
ability to go down to 50 Hz IF-DSP filtering , but to be honest I find the
digital ba
5V7SE is still on 14085 working up 1; 20m should be good for another
hour or two...
73,
Dave, AA6YQ
--- In digitalradio@yahoogroups.com, "Andrew O'Brien"
<[EMAIL PROTECTED]> wrote:
>
> Drats, I was going to skip work early and head homehope I can
find 'em.
>
> Andy K3UK
>
>
Well,
You are all correct... as usual "it depends"; in this case it depends on
mode, band and operating style.
If I were, for example, using the "panoramic" type operation to look for
a snap-shot of what was going on in cw, rtty or psk modes using
Multipsk, I would opt for a fairly wide open fil
--- In digitalradio@yahoogroups.com, "expeditionradio"
<[EMAIL PROTECTED]> wrote:
>
> --- In digitalradio@yahoogroups.com, Rick Scott wrote:
> >
> > The only Coodination I see is WINLINK trying to grab
> > all the available Frequencies
>
> Hi Scott,
>
> There is no grab happening. Everyone has t
Rick Scott wrote:
>
> The only Coodination I see is WINLINK trying to grab all the
> available Frequencies
I can summarize the gist of Bonny's "coordination" with much fewer bytes:
3.5 Mhz-4.0 Mhz -- Winlink
de Roger W6VZV
I dont understand why all the different winlink freqs. Are all these going
to be on at the same time? Looks like state organizations so wonder why
they cant share the same freqs? Particularlly when there is NO emergency.
Frankly, the FCC really screwed up on this one, and I hope someone, other
t
Rein Couperus wrote:
> We generally use 300 Hz filters for PSK125 and they are too wide.
> There is no substitute for good narrow Xtal filters. I don't
> understand how you can try to work PSK31 (50 Hz bandwidth) with a 2.7
> kHz filter. That is against all logic (and math).
>
> We recommand u
expeditionradio wrote:
> Hi Scott,
>
> There is no grab happening. Everyone has to operate somewhere in this
> small band. Since the sub-band changes are fairly new, the only
> coordination entities listed so far have been well-organized ones
> like ARRL NTS, Winlink2000, ARRL's W1AW station,
using my TS480SAT with both CW filters, can get really narrow on PSK and still
copy.
don't know much about the IC746. can you menu select cw filters for
ssb(digital) reception on USB? or do they only work in CW?
John
VE5MU
- Original Message -
From: Dave
To: digitalradio@yahoo
The 746 allows you to select any filter for any mode, thank goodness!!
73
Dave
KB3MOW
John Bradley wrote:
using my TS480SAT with both CW filters, can get really narrow on PSK
and still copy.
don't know much about the IC746. can you menu select cw filters for
ssb(digital) reception on
--- In digitalradio@yahoogroups.com, "Danny Douglas" <[EMAIL PROTECTED]> wrote:
> I hope someone, other
> than automatic groups, complains enough so that we are given back
some of
> our narrowmode only portions.
>
> Danny Douglas N7DC
I have never heard of narrowmode only portions before, Danny.
Danny Douglas wrote:
>
> I have a hard time visualizing the need for a narrow filter, for such
> narrow modes. You can sit, in PSK for instance, slap up against
> another PSK signal and still copy much weaker signals. Thats the
> whole purpose of the narrow band digital modes to start with. I u
[EMAIL PROTECTED] wrote:
> I don't know all the capabilities of my rig ft-897 and psk31 but the
> other day I had a what appeared to be a 100 watt plus psk31 station
> that basically with AGC reduced the signal reaching my computer so
> much that I couldn't copy almost any station never mind we
Well Bonnie the whole of the bottom of almost every band is narrow mode.
That is by rule, as well as common use and has been since voice first came
on the air.
The cw,rtty, data subbands are considered narrow mode, and the top of the
bands for VOICE and Image are wider, thus wide bands. Lets pu
I am simply saying that I have not had to use such techniques or filters
since I started using PSK. I have worked 133 countries in the mode, using
my SSB filters, and have yet to have even a nearby signal block out one of
them so badly I couldnt copy it. Maybe its my TS570s, my software, my
loca
Dave wrote:
>
> Has anyone tried using either a 250 Hz or 500 Hz filter for PSK31
> reception? My Icom IC-746 (non-Pro) has no filters installed, and is
> wide as a barn door on USB for PSK31. I wondered if either of these
> filters would help, or would they be too narrow?
>
> The pass-band sh
--- In digitalradio@yahoogroups.com, "Danny Douglas" <[EMAIL PROTECTED]> wrote:
>
> Well Bonnie the whole of the bottom of almost every band is
> narrow mode.
> That is by rule, as well as common use and has been since
> voice first came on the air.
> FCCs action of moving the SSB portion down
Like most things, there is a middle path on this. Most of the time I can
operate digital modes with a wide setting on my passband. The maximum on
my ICOM 756 Pro 2 is 3.6 kHz. If I do get some very strong signals, they
can and will desense the rig and the waterfall display will weaken,
sometime
Whether we like it or not, much of this was decided over a decade ago
when the FCC ruled that if the station was using 500 Hz or narrower
modes, it would be legal to operate with "semi" automatic operation.
Fully automatic stations, such as the NTS/D which uses the Winlink
system (not to be con
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