> jhaynesatalumni wrote
> Right now I'm copying a QSO where the stations are using Olivia
> 16/500 on 80M. I'm in NW Arkansas, and the two stations in the QSO
> are in Florida and Georgia. I'm getting solid copy on the Florida
> station and extremely lousy copy on the Georgia station.
> (Presuma
Right now I'm copying a QSO where the stations are using Olivia
16/500 on 80M. I'm in NW Arkansas, and the two stations in the QSO
are in Florida and Georgia. I'm getting solid copy on the Florida
station and extremely lousy copy on the Georgia station.
(Presumably they are getting good copy on
Rockwells's military ARC-230 radio uses ISB to enable at least a theoretically
possible 19.2kb per second with ALE through SCOPE Command -9600 kbps per
sideband. O f course, they do not ever achieve that rate given today's sunspot
situation but it is at least a laboratory possibility. The E-3A
The SoftRock V6.1 two band transceiver is very expensive, it's $32 if
you can afford that much I recommend you buy one. ;>}
What a deal!
At 06:19 PM 2/1/2007, you wrote:
>Don't know... I'll have to do a google search on softrock
>and see what it is. If that *is* what a softrock is, I
>may just
Actually, there was quite a bit of focus on security back in the 70s
and 80s, but the topology employed for scalable computing was
vulnerable to different threats. The prevailing notion was that ever
larger CPUs would be timeshared as computing utilities by multiple
organizations. The concern w
> Paul L Schmidt, K9PS wrote: If you wanted to produce a pair of PSK31
> signals separated by, say, 150 Hz, with a pilot carrier between them,
> it'd simply be a matter of building the appropriate waveforms to make
> it happen that way.
> Basically, a cheap software-defined radio, covering a small
The SoftRock is a kit, very inexpensive, with some
neat features and an incredibly talented network
of contributors joined together with the primary
developer Tony Parks, KB9YIG
Here is the SoftRock group:
http://groups.yahoo.com/group/softrock40/
doc
> Paul L Schmidt, K9PS wrote:
> Don't know.
> Paul L Schmidt, K9PS wrote:
> Now, if someone hadn't confused the regulation-by-bandwidth rulemaking
> proposal by putting unrelated changes in automatic control in the same
> proposal, it might have been successful. Had it been, we'd be able to be
> talking to someone on SSB, and blast them a
Don't know... I'll have to do a google search on softrock
and see what it is. If that *is* what a softrock is, I
may just have to get one to play with :)
Jose A. Amador wrote:
> Isn't that a Softrock using SDR-1000 or M0KGK software?
>
> Jose, CO2JA
>
--- Danny Douglas <[EMAIL PROTECTED]> wrote:
> Why is that? FM is the carrier, afsk is the mode.
> Just as SSB is the
> carrier for an AFSK signal. If you can run AFSK on
> SSB in the other bands,
> why not 10? Does it specifically say NBFM only for
> voice?
>
>
> Danny Douglas N7DC
> ex WN
Yeah, I know the difference just didnt put it together. I was thinking one
and talking about another. But DSB was also used, I think, with some kind
of rtty signals with one upper and one lower supperessing the carrier in the
middle. Not sure how it was done. Didnt use much of that around the t
Danny Douglas wrote:
> Why is that? FM is the carrier, afsk is the mode. Just as SSB is the
> carrier for an AFSK signal. If you can run AFSK on SSB in the other bands,
> why not 10? Does it specifically say NBFM only for voice?
That would be an F2D emission. Legal on frequencies where 97.307
Why is that? FM is the carrier, afsk is the mode. Just as SSB is the
carrier for an AFSK signal. If you can run AFSK on SSB in the other bands,
why not 10? Does it specifically say NBFM only for voice?
Danny Douglas N7DC
ex WN5QMX ET2US WA5UKR ET3USA
SV0WPP VS6DD N7DC/YV5 G5CTB all
DX 2-6 yea
I wasn't so concerned about whether it's ISB, DSB, or whatever; I was more
interested in the comment that it would make the rig easy to build. If a
simple rig were built with two balanced modulators from a quadrature RF source
(easy to do), using stereo audio with a sound card program designed for
I was just looking in part 97, (regarding the legality of ISB), and
noticed something else...
In the US, even though "regular" NBFM is legal above 29 MHz, it's only
legal for voice. The entire 10-meter band is still split up between
RTTY/Data and Voice/Image like the rest of the HF bands..
So AF
I have not followed the whole thread but I wouldn't be too sure to
believe that
Windows flaws exist per se and are not a result of agreements with somebody
else, as some conspiracy theories state.
Just in case, it is safer to use a third party firewall, or run a
"bastillized" *n?x.
Jose, CO2J
Something I never have quite understood is that in the late 90's in
Indonesia, hams have used
1200 baud satellite PSK modems on 40 meters with seemingly good results.
It has been a bit hard for me to follow that. Does anyone have a
sensible explanation
for this to be useful. I do not own such a
Isn't that a Softrock using SDR-1000 or M0KGK software?
Jose, CO2JA
Paul L Schmidt, K9PS wrote:
> For a simple transmitter, how about a sound card mode that uses the
> sound card in STEREO mode with I and Q components on L and R
> channels, feeding two balanced modulators, and build a
There was some packet activity on 29 MHz in the 90's . While I could do
a LOT of forwarding at 1200 baud
on 28.18 MHz at 1200 baud using a SSB radio, I was NEVER lucky to get a
connection at 1200 baud FM AFSK,
even when I heard some of them. SNR was too bad.
The numbers tell that such a link i
Hi Rein,
Since this came up in the PSKMail forum, I thought I'd get it on the
table here as well for discussion.
Since I'm not a Linux guru, I'd like to see the Live CD for PSKMail
included with a lower (<=128MB) memory req't. Granted, memory is
becoming cheaper and cheaper, however, as hams a
KV9U wrote:
> As long as you are going down in voltage, there are relatively simple
> analog circuits that can drop the voltage to anything you might
> want. While you can use a simple dropping resistor, this only works
> if there is a known steady current draw and you design for that draw
>
> So
> far there's no I&Q software for digital mode reception (please prove
> me wrong!)
I hope so:
DREAM is IQ capable.
Start it with "dream.exe -c 3" (see dream's help) and feed it with your
IQ signal. More, since dream is open-source, and dreams iq-capability is
a modular phase-shift hi
> But the security debate isn't simple enough to be about propaganda --
> It's about history, and the evolution of the PC. And, again... I
> can TELL you how it is, cuz I was there and I've *read* the code of
> the operating systems we're discussing.
> I'm out of this conversation,
> de Peter K1P
Yes, My first AOR digital voice modem was the ARD9000 MK II. Being blind,
it was problematic for me to make sure I wasn't in the digital mode when
checking into a net and as a result was cursed out in a bar room brawler
fashion by the ncs and told not to come back on the frequency as I wasn't
I have been using the ARD9800 for about 4 years in the mobile.
Really can't say about the MK2.
You can see a photo of the FT-840 and DV modem mounted
in my ford F-150 pick up at
http://www.hamradio-dv.org/aor/digital-ssb/fellow-users/fellow-users-pics/w0jab/w0jab-stn.htm
John, W0JAB
At 12:26 P
Sorry Bill,
I own the ARD9800 modems, I've never used an ARD9000MK2. Although I
have read e-mails, owners seem to like the MK2 more than the older
version (the ARD9000). They also believe they are more stable / RFI
proof. Now that's just second hand hear say, so take that with a
gr
Has anyone had any experience with the AOR digital voice modem ARD9000MK2?
I'm curious as to how well it works on hf ssb.
Bill S
It's part of VISTA - can't remember what it's called but there are example
of use in the SDK.
Properly written NT/2K/XP code will still work but when running on VISTA
it's much better to use the VISTA API.
Simon Brown, HB9DRV
(GD4ELI March 2nd - 12th 2006)
- Original Message -
From: "
Paul and others,
Indeed you can generate Digital Modes as I&Q components from a sound
card stereo output. I've been involved in a few successful trials.
I believe there's I&Q PSK31 software about, I have an experimental
I&Q version of DominoEX for use on LF, and there's a very nice I&Q
output
> When I get
> my soundcard DLL written for VISTA I'll make the source available.
This would be great !
btw, where did you get the new sound API from ?
>
>
> MS has *always* lagged behind Unix, Linux, BSD, and Apple
> in this area. Always. MS propaganda aside.
...
>
> NT/2000 was a desperate attempt by MS to stem the bleeding
> because everyone else's OS's were less vulnerable and it
> was at-best embarassing, at worse was harming them at
>
Peter G. Viscarola wrote:
>> Unix was *always* secure and Linux flowed out of Unix as did BSD.
>> Unix is very old.
>>
>
> I don't know what you're background in the computer field is, and I
> don't mean to turn this into a resume review, but I've been writing
> operating systems and OS-level c
--- In digitalradio@yahoogroups.com, "Simon Brown" <[EMAIL PROTECTED]>
wrote:
> No way matey - I have used UNIX distributions where the username /
password
> was stored in plain text...
This is a total red herring, of course.
Triple-DES is no more secure than your newspaper cryptogram puzzle if
> Danny Douglas N7DC wrote:
> The best use of DSB in ham radio would be for SSTV or some
> such. You could have the picture on one side, and voice
> talking about it on the other.
Hi Danny,
That's commonly known as ISB (Independent Side Band).
DSB, or AMSC, is commonly what you get when you
>
>Unix was *always* secure and Linux flowed out of Unix
>as did BSD. Unix is very old.
>
I don't know what you're background in the computer field is, and I
don't mean to turn this into a resume review, but I've been writing
operating systems and OS-level components since, oh, 1978. Your
statem
Like most things, both posters reflect truth as they see it. Perhaps the
same for me:)
Microsoft happened to be in the right place at the right time to buy an
OS from a third party to allow IBM 808x chips to at least work at a
rudimentary level. Cassette tape loading, that sort of thing at fir
I have posted a project details for a small interface for echolink
which uses two isolation transformers & 2 opto-couplers. It may be
powed from DTR pin under a script of from external supply/
kindly visit project page for details:
http://www.foxdelta.com
I hope this information may be useful
- Original Message -
From: "kd4e" <[EMAIL PROTECTED]>
>
> Unix was *always* secure and Linux flowed out of Unix
> as did BSD. Unix is very old.
>
No way matey - I have used UNIX distributions where the username / password
was stored in plain text. I refer to Ultrix in the mid to late 1
>> 7. While Microsoft made a passing attempt at retrofitting security
>> into its early operating systems, they didn't get any money for
this. >> So, we should be extremely grateful that they actually fixed
security >> problems for 8 years for Windows 98. Other companies would not
>> support a
The bps with packet is the same as the baud rate. With other modes that
have different levels, the signalling rate (the baud rate) can have more
than one bit sent per baud.
The fastest baud rate that Pactor uses is 200 baud, but the bps rate is
many times faster with P2 and P3.
The speed of co
The best use of DSB in ham radio would be for SSTV or some such. You could
have the picture on one side, and voice talking about it on the other. We
used to throw up a DSB signal in transmitting to other government
facilities, with one stream to station A on USB, and another stream of
traffice to
> Walt K5YFW wrote:
> Another consideration is what would the bandwidth be with
> DSB where two 350 Hz PSK modes were sent? The bandwidth
> would be 770+ Hz.
>...
> problem is finding an ISB receiver which you would need.
> Perhaps a direct conversion receiver with a Q/I (?) detector
> and D
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