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VK7AX > SSTV 23.10.08 02:02l 289 Lines 8549 Bytes #999 (0) @ WW
BID : VK7AX-2310SR
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Subj: [MM-SSTV] Digest Number 1866
Path: IZ3LSV<IQ0LT<IK2XDE<DB0RES<ON0AR<VK6HGR<VK7AX
Sent: 081023/0057Z @:VK7AX.#ULV.TAS.AUS.OC #:54507 [Ulverstone] FBB7.00g $:VK7A
From: VK7AX@VK7AX.#ULV.TAS.AUS.OC
To : SSTV@WW
There are 8 messages in this issue.
Topics in this digest:
1a. Re: Pueblo, CO
From: D. Mynatt
2a. DM780 Picture Slant
From: Rui Manuel
2b. Re: DM780 Picture Slant
From: Simon Brown (KNS)
2c. Re: DM780 Picture Slant
From: Rui Manuel
2d. Re: DM780 Picture Slant
From: Simon Brown (KNS)
2e. Re: DM780 Picture Slant
From: Rui Manuel
2f. Re: DM780 Picture Slant
From: jdow
2g. Re: DM780 Picture Slant
From: Simon Brown (KNS)
Messages
________________________________________________________________________
1a. Re: Pueblo, CO
Posted by: "D. Mynatt" dave(AT)mynatt.biz davemynatt
Date: Tue Oct 7, 2008 4:34 am ((PDT))
Is John (WB0LCC) on this group?
----- Original Message -----
From: B.P.
To: MM-SSTV(AT)yahoogroups.com
Sent: Monday, October 06, 2008 5:50 AM
Subject: Re: [MM-SSTV] Pueblo, CO
You might try to contact WB0LCC, he's in Pueblo and always on 14.230 running SSTV.
Bruce KD8DQ
--- On Mon, 10/6/08, D. Mynatt <dave(AT)mynatt.biz> wrote:
From: D. Mynatt <dave(AT)mynatt.biz>
Subject: [MM-SSTV] Pueblo, CO
To: MM-SSTV(AT)yahoogroups.com
Date: Monday, October 6, 2008, 12:50 AM
Any SSTV stations in Pueblo CO willing to help set one up for a science group?
Dave Mynatt
Program Director
============ ========= ===
http://sciencecente r.no-ip.org
SID ID: S-0258
KA0SWT
APRS Tier II Server (AT) pueblo.aprs2. net:14501
LAT: 38'16.278" N
LON: -104'40.537" W
Alt: 1460m
DM78qd
Messages in this topic (3)
________________________________________________________________________
________________________________________________________________________
2a. DM780 Picture Slant
Posted by: "Rui Manuel" ct1qk01(AT)gmail.com profpardal2001
Date: Tue Oct 7, 2008 4:56 am ((PDT))
Hello
I have a question to the group
I am using mmsstv for a long time, and I always have calibrated my
soundcards with wwv with no problems.
However now, I am receiving the pictures made by Dm780 always with a
small slant to the right. My friends tell me that they have calibrated
the cards with the internet option, on the program, from a clock site.
I don't know where the problem is.
Nowadays is quiet usual to see many people transmitting with terrible
slant pictures with no problems with this, and I have to
systematically correct the slant of the pictures to know who is
sending them.
Maybe this is a new way of working SSTV.
Any tips on this?
Rui,CT1QK
Messages in this topic (7)
________________________________________________________________________
2b. Re: DM780 Picture Slant
Posted by: "Simon Brown (KNS)" simon.brown(AT)kns.ch simonbrown42
Date: Tue Oct 7, 2008 5:02 am ((PDT))
Maybe - just maybe we've exposed a slight problemette with the MM-SSTV
decoder?
I thought (know indeed) that MM-SSTV could (can) auto-correct slant?
DM780 (build 1989) is able to get MM-SSTV pics spot on.
Simon Brown, HB9DRV
www.ham-radio-deluxe.com
----- Original Message -----
From: "Rui Manuel" <ct1qk01(AT)gmail.com>
> >
> > I have a question to the group
> > I am using mmsstv for a long time, and I always have calibrated my
> > soundcards with wwv with no problems.
> > However now, I am receiving the pictures made by Dm780 always with a
> > small slant to the right. My friends tell me that they have calibrated
> > the cards with the internet option, on the program, from a clock site.
> > I don't know where the problem is.
> > Nowadays is quiet usual to see many people transmitting with terrible
> > slant pictures with no problems with this, and I have to
> > systematically correct the slant of the pictures to know who is
> > sending them.
> > Maybe this is a new way of working SSTV.
> >
Messages in this topic (7)
________________________________________________________________________
2c. Re: DM780 Picture Slant
Posted by: "Rui Manuel" ct1qk01(AT)gmail.com profpardal2001
Date: Tue Oct 7, 2008 5:33 am ((PDT))
--- In MM-SSTV(AT)yahoogroups.com, "Simon Brown \(KNS\)"
<simon.brown(AT)...> wrote:
> >
> > Maybe - just maybe we've exposed a slight problemette with the MM-SSTV
> > decoder?
> >
> > I thought (know indeed) that MM-SSTV could (can) auto-correct slant?
> >
> > DM780 (build 1989) is able to get MM-SSTV pics spot on.
> >
> > Simon Brown, HB9DRV
> > www.ham-radio-deluxe.com
> >
Maybe you are right I don't know, the difference is just a small
slant, nothing to worry, and I can correct it in auto slant turn on
with no problems.
The big deal is the offset TX of some cards; usually I have to put a
large TX offset on SoundBlaster Live cards, -4.10 Hz for mine.
When playing with a friend of mine that is using Dm780, he receives
well after calibration but is has a very high slant on TX and has to
correct it manually to find the right clock on TX.
I don't know how he has done but all is fine now.
One interesting thing is the high definition of the pictures superb
transmitting.
CT1QK
Messages in this topic (7)
________________________________________________________________________
2d. Re: DM780 Picture Slant
Posted by: "Simon Brown (KNS)" simon.brown(AT)kns.ch simonbrown42
Date: Tue Oct 7, 2008 5:37 am ((PDT))
DM780 prepares the images at 640 x 512 and reduces them to 320 x 256 before
sending.
There will be some very groovy templates in DM780 come mid-November.
Simon Brown, HB9DRV
www.ham-radio-deluxe.com
----- Original Message -----
From: "Rui Manuel" <ct1qk01(AT)gmail.com>
> > One interesting thing is the high definition of the pictures superb
> > transmitting.
Messages in this topic (7)
________________________________________________________________________
2e. Re: DM780 Picture Slant
Posted by: "Rui Manuel" ct1qk01(AT)gmail.com profpardal2001
Date: Tue Oct 7, 2008 6:05 am ((PDT))
Thank you Simon for the beautiful work that you are doing, the
received pictures are indeed the highest quality, they have a very
good processing,and they seemed quite similar to digital.
By the way he is using a usb card that he modify from a IP Voice Phone
CT1QK
--- In MM-SSTV(AT)yahoogroups.com, "Simon Brown \(KNS\)"
<simon.brown(AT)...> wrote:
> >
> > DM780 prepares the images at 640 x 512 and reduces them to 320 x 256
before
> > sending.
> >
> > There will be some very groovy templates in DM780 come mid-November.
> >
> > Simon Brown, HB9DRV
> > www.ham-radio-deluxe.com
Messages in this topic (7)
________________________________________________________________________
2f. Re: DM780 Picture Slant
Posted by: "jdow" jdow(AT)earthlink.net ferdyfubar
Date: Tue Oct 7, 2008 7:09 am ((PDT))
From: "Rui Manuel" <ct1qk01(AT)gmail.com>
Sent: Tuesday, 2008, October 07 04:56
> > Hello
> >
> > I have a question to the group
> > I am using mmsstv for a long time, and I always have calibrated my
> > soundcards with wwv with no problems.
> > However now, I am receiving the pictures made by Dm780 always with a
> > small slant to the right. My friends tell me that they have calibrated
> > the cards with the internet option, on the program, from a clock site.
> > I don't know where the problem is.
> > Nowadays is quiet usual to see many people transmitting with terrible
> > slant pictures with no problems with this, and I have to
> > systematically correct the slant of the pictures to know who is
> > sending them.
> > Maybe this is a new way of working SSTV.
> >
> > Any tips on this?
> >
> > Rui,CT1QK
They are off. Time over the internet is not accurate enough for a good
slant adjustment.
{^_^} Joanne, W6MKU
Messages in this topic (7)
________________________________________________________________________
2g. Re: DM780 Picture Slant
Posted by: "Simon Brown (KNS)" simon.brown(AT)kns.ch simonbrown42
Date: Tue Oct 7, 2008 7:19 am ((PDT))
----- Original Message -----
From: "jdow" <jdow(AT)earthlink.net>
> >
> > They are off. Time over the internet is not accurate enough for a good
> > slant adjustment.
> >
Depends on how you implement it.
Simon Brown, HB9DRV
www.ham-radio-deluxe.com
Messages in this topic (7)
----------------------------------------------------------
******************************************************************
ABOVE IS A CROSS POST TO THE PACKET RADIO NETWORK IN AN EFFORT TO
PROMOTE FURTHER INTEREST IN SLOW SCAN TELEVISION AND PACKET RADIO
Courtesy Tony VK7AX VK7AX(AT)VK7AX.#ULV.TAS.AUS.OC
******************************************************************
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