Thanks, Tony.
Vista might be adding another variable to the equation.
73,
Dave, AA6YQ
-Original Message-
From: digitalradio@yahoogroups.com [mailto:[EMAIL PROTECTED]
Behalf Of Tony
Sent: Tuesday, September 30, 2008 12:04 AM
To: digitalradio@yahoogroups.com
Subject: Re: [
Bert,
> I am in the market for a new laptop that will be use for ham radio
> software such as PSK 31. I been told that Vista OS may not work with
> the sound card programs.
> KD7Jeh Bert
Had some trouble with the digital voice program FDMDV. All was fine after
the author modified the program fo
> What were the sampling rates used by each of those 5 applications, Tony?
> 73, Dave, AA6YQ
Dave,
The sample rates were 11025 Hz for Mixw and IZ8BLY MT63 terminal. Looks like
8000 Hz for DM780 and Multipsk. Not sure what's going on with Fldigi. I'm
using the Vista version.
Tony, K2MO
Hello to the group,
I am in the market for a new laptop that will be use for ham radio
software such as PSK 31. I been told that Vista OS may not work with
the sound card programs.
Is this true? I would like to hear from you Vista owners good and
bad. I would like to know what laptop brand
Andrew O'Brien wrote:
>
> Some "new ones" I mopped up this weekend
>
> Date Time Call Band Mode Station
> Call Result
>
> 2008-09-28 15:02:37 ES5RY 20M RTTY
> K3UK first Estonia QSO: RTTY
> 2008-09-28 16:58:49 FG5LA 15M RTTY
> K3UK first Guadeloupe QSO: 15M
> 2008-09-28 17:53:47 3V8BB 15M RTTY
> K3
What were the sampling rates used by each of those 5 applications, Tony?
73,
Dave, AA6YQ
-Original Message-
From: digitalradio@yahoogroups.com [mailto:[EMAIL PROTECTED]
Behalf Of Tony
Sent: Monday, September 29, 2008 8:55 PM
To: digitalradio@yahoogroups.com
Subject: Re: [
Some "new ones" I mopped up this weekend
Date Time CallBand Mode Station
CallResult
2008-09-28 15:02:37 ES5RY 20M RTTY
K3UKfirst Estonia QSO: RTTY
2008-09-28 16:58:49 FG5LA 15M RTTY
K3UKfirst Guadeloupe Q
> Its my understanding that when multiple simultaneously running applications
> are using the soundcard with different sampling rates, that Windows delivers
> a compromise sampling rate. Thus comparisons run on the same PC may not
> accurately reflect each application's performance in isolation.
I COULD NOT AGREE MORE WITH THE BELOW STATEMENT
EX MT 63 I RUN IZ8BLY DECODE IS GREAT BUT SLOW COMPARED TO MULTI PSK
4.9/4.10 WHICH IS 2X FASTER DECODE BUT PRONE TO MORE ERRORS TEST DONE
ON SAME RECEIVER TO CPU'S AND GMFSK FOR LINUX PERSONALLY DOESN.T HOLD A CANDLE
TO THE OTHER TWO AND NOT ONLY SA
Also, there is no reason to believe that the two applications would be
equally penalized by a compromise sampling rate -- so the results of the
comparison would be suspect unless its known that both applications use the
same sampling rate.
73,
Dave, AA6YQ
-Original Message
Its my understanding that when multiple simultaneously running applications
are using the soundcard with different sampling rates, that Windows delivers
a compromise sampling rate. Thus comparisons run on the same PC may not
accurately reflect each application's performance in isolation.
73,
Rick,
> To do simple test comparisons of the modes, I will bring up two software
> programs and visually see how the print compares between the two.
Seems to be the only way to make a fair comparison Rick. I do the same thing
here whether it's on-the-air or with the HF simulator running. The PC
2325Z and calling but so far nothing heard. 500 Hz BW.
73,
Rick, KV9U
Tony wrote:
> All,
>
> I'm QRV MT63 14106.0 USB @ 2245z. I'll be here for a while.
>
> Tony, K2MO
>
To do simple test comparisons of the modes, I will bring up two software
programs and visually see how the print compares between the two. The
main comparisons have been between Multipsk, HRD/DM780, and fldigi. For
most of these tests I have been using my emachines tower with Intel 2.93
GHz run
All,
I'm QRV MT63 14106.0 USB @ 2245z. I'll be here for a while.
Tony, K2MO
All,
Received an email regarding MT63 decode problems with Fldigi. It seems that
the program chooses the short interleave setting by default. This is not
compatible with the long-interleave 'standard' used by the majority of MT63
users.
To correct this, click configure / modems and then the MT
Rick,
> When I have done some crude comparisons with actual off air tests
> between different programs, there is usually not a lot of difference
I'm interested in your test method.
Tony, K2MO
--- In digitalradio@yahoogroups.com, "Rick Ellison" <[EMAIL PROTECTED]> wrote:
> It is a long standing standard that The standard for BOTH amateur and
> commercial FSK has ALWAYS been "specify MARK" with MARK being the
higher RF
> frequency and SPACE being the lower RF frequency (e.g., shift low).
Aha! I get the point. I was thinking 'casual' and you were thinking
'competitive'. Sorry for the QRM. :-[
Michael Keane K1MK wrote:
> On 9/28/2008 9:04 PM, Chuck Mayfield wrote:
>
>
>> Are you picking Nits? You actually want all the software developers
>> except three to make modifications f
On 9/28/2008 9:04 PM, Chuck Mayfield wrote:
> Are you picking Nits? You actually want all the software developers
> except three to make modifications for 85 Hz?
Of course not. It's be much more effective to ask those using software
with that sort of defect to refrain from generating inaccurate
Rick, this is important work, thanks for taking the time to do it.
I use Winwarbler or Win-test for RTTY (FSK), glad to know they are
correct.
Andy
--- In digitalradio@yahoogroups.com, "Rick Ellison" <[EMAIL PROTECTED]> wrote:
>
> After an email exchange with Joe W4TV about some support hel
Hello,
Yes, RTTY 85 Hz is very much off frequency
in contest situation with full band of QRM and
so on. In last 48 hours we can check it in CQWW RTTY contest.
Precise spotting in RTTY is real problem.
Agree with N2AMG/Rich, this situation is not normal.
73
Vilnis
YL2KF
> Rick,
> Are you
> unlike PSK31 that mostly utilize the same 'core", other modes my well
> require comparison tests to > determine which is consistently "better".
> Andy K3UK
Very interesting Andy. Patrick (F6CTE) motioned that sound card sampling
accuracy plays a role with MT63.
Tony, K2MO
Hi Dave,
> Hi Tony.have you tried fldigi.. MT63
Yes I have. The simulator says it decodes about as well as IZ8BLY's
software.
Tony, K2MO
- Original Message -
From: "David" <[EMAIL PROTECTED]>
To:
Sent: Friday, September 26, 2008 7:34 PM
Subject: Re: [digitalradio] MT63 -- Mutlip
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