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VK7AX > SSTV 14.09.08 06:06l 378 Lines 12846 Bytes #999 (0) @ WW
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Subj: [MM-SSTV] Digest Number 1851
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To : SSTV@WW
There are 7 messages in this issue.
Topics in this digest:
1a. Re: 30M MMSSTV 10.132
From: Lothar
1b. Re: 30M MMSSTV 10.132
From: Byron
1c. Re: 30M MMSSTV 10.132
From: Russell Blair
2a. Seeing a lot of SSTV-N on 30m
From: Russell Blair
2b. Re: Seeing a lot of SSTV-N on 30m
From: ve3wej gmail
2c. Re: Seeing a lot of SSTV-N on 30m
From: Russell Blair
3. someone using (Martin 2 mode on 30m)
From: Russell Blair
Messages
________________________________________________________________________
1a. Re: 30M MMSSTV 10.132
Posted by: "Lothar" k5leh(AT)sbcglobal.net lotharharris
Date: Wed Sep 10, 2008 8:42 am ((PDT))
--- In MM-SSTV(AT)yahoogroups.com, "Rev. Father Johnny Shepherd"
<fieldservice(AT)...> wrote:
> >
> > I think there might be some misinformation or Dan read the question
> > wrong ..
Yes there is a lot of bad information floating around.
First of all, 30 meters has a few restrictions like 200 WPEP and on a
non-interference basis. The issue of SSTV falls into the restriction
as defined in FCC rule § 97.309(a)(4). A nice link that explains the
rule is http://www.arrl.org/FandES/field/regulations/techchar/ so now
the issue is "why?".
Well look at
http://www.arrl.org/FandES/field/regulations/news/part97/d-
305.html#307f3 "(3) Only a RTTY or data emission using a specified
digital code listed in §97.309(a) of this Part may be transmitted.
The symbol rate must not exceed 300 bauds, or for frequency-shift
keying, the frequency shift between mark and space must not exceed 1
kHz." and then further it specifies "(a) Where authorized by §97.305
(c) and 97.307(f) of this Part, an amateur station may transmit a
RTTY or data emission using the following specified digital codes:
(4) An amateur station transmitting a RTTY or data emission using a
digital code specified in this paragraph may use any technique whose
technical characteristics have been documented publicly, such as
CLOVER, G-TOR, or PacTOR, for the purpose of facilitating
communications. " So - in plain english - SSTV is legal if it
conforms to those standards - does it?? The answer is yes and no.
Normal SSTV does not because it exceeds the bandwidth restrictions.
Narrow band SSTV and digital SSTV fall within the guidelines and
could be used on 30 meters. All that said, why do it if no one is
there listening???
K5LEH
Messages in this topic (22)
________________________________________________________________________
1b. Re: 30M MMSSTV 10.132
Posted by: "Byron" abkinnaman(AT)earthlink.net byronkinnaman
Date: Wed Sep 10, 2008 8:42 am ((PDT))
If check far enough into part 97 you'll see that 30 meter is restricted
to RTTY and data with a symbol rate not to exceed 300 baud.
Bands and frequencies that image transmissions are allowed are also
specified in Part 97.
MMSSTV runs at 1200 baud.
Check it out at
http://www.arrl.org/FandES/field/regulations/news/part97/onepage.html#303d
Byron
KE7TIV
-----Original Message-----
> >From: Don <dhobson123(AT)aol.com>
> >Sent: Sep 10, 2008 1:12 AM
> >To: MM-SSTV(AT)yahoogroups.com
> >Subject: [MM-SSTV] Re: 30M MMSSTV 10.132
> >
> >That would be great if we could have someone ask the FCC but as far as
> >things as revised/amended in 2006 it appears that 'NARROW' that is
> >less then 500hz wide data image can be used but if anyone has direct
> >access to the FCC would be interesting if they copy and paste the
> >below what they say...again we assume by their R&O it is legal unless
> >the FCC says what was amended was an incorrect interpretation (they do
> >always seem to like 'advancing its (Ham-diigtal) technology').
> >
> >Don kb9umt
> >
> >http://www2.arrl.org/FandES/field/regulations/recent-fcc-actions.html
> >
> >http://hraunfoss.fcc.gov/edocs_public/attachmatch/FCC-06-149A1.pdf
> >
> > " It is contained in the FCC Report and Order issued in November
> >2006. The R&O did, among other things, amend 97.305(c) to broaden
> >permission for image transmission.
> >
> > In the R&O, these relevant paragraphs appear:
> >
> > 16. In the NPRM, the Commission sought comment on whether it should
> > revise the definition of data emission types contained in Section
> > 97.3(c) of our Rules to include emission types A1C and F2C. This
> >would permit amateur stations to transmit FAX emissions having an
> >occupied bandwidth of 500 Hz or less on the frequency segments used
> >for data communications. The NPRM also noted that limiting the
> >occupied bandwidth of image emissions in data segments of the HF bands
> >to 500Hz or less would provide the amateur service community greater
> >flexibility in developing communication systems and communications
> >technology, thereby furthering that purpose of the amateur service
> >while maintaining the narrow bandwidth nature of the data emission
> >band segments.
> >
> > 17. Decision. All commenters who addressed this issue support the
> >NPRM proposal to revise the definition of data in the amateur service
> > rules. We agree that permitting images to be transmitted on data
> >emission frequency segments will "allow amateur radio to make the most
> > of new software programs" thereby "advancing its technology."
> >
> >Yes, thanks to Mark, N5RFX, who petitioned the FCC last year, the
> >decision was made to allow any kind of image transmission (analog or
> >digital) in text digital portions of the bands here in the U.S.,
> >provided that they are 500 Hz or less in bandwidth.
> >
> >The FCC redefined "data" to include image when under 500 Hz and can be
> >found at:
> >
> >
> >§97.3 Definitions.
> >
> >(c)(2) Data.Telemetry, telecommand and computer communications emissions
> >having (i) designators with A, C, D, F, G, H, J or R as the first
> >symbol, 1 as the second symbol, and D as the third symbol; (ii) emission
> >J2D; and (iii) emissions A1C, F1C, F2C, J2C, and J3C having an occupied
> >bandwidth of 500 Hz or less when transmitted on an amateur service
> >frequency below 30 MHz. Only a digital code of a type specifically
> >authorized in this part may be transmitted.
> >
> >Here are some interpretations of the ITU Emission Classifications:
> >
> >A1C = DSB AM digital FAX with no subcarrier
> >
> >F1C = FM FAX digital modulation with no subcarrier (MFSK)
> >
> >F2C = FM digital FAX with subcarrier
> >
> >J2C = digital SSB FAX with subcarrier
> >
> >J3C = analog SSB FAX
Messages in this topic (22)
________________________________________________________________________
1c. Re: 30M MMSSTV 10.132
Posted by: "Russell Blair" russell_blair86(AT)yahoo.com russell_blair86
Date: Wed Sep 10, 2008 10:05 am ((PDT))
Lothar, your question (Why do it if no one there is listening),
Hope some of the new programs like MMSSTV- with norrow N and DIGSSTV,
that can be used can get a foot hold and see some DX as well,
and maybe get away from 20M because of QRM at times during contesting.
I dont a lot of SSTV but I do try at times.
Thanks for all the input from all.
Russell NC5O
Russell Blair (NC5O)
Skype-Russell Blair
Hell Field #300
DRCC #55
--- On Wed, 9/10/08, Lothar <k5leh(AT)sbcglobal.net> wrote:
From: Lothar <k5leh(AT)sbcglobal.net>
Subject: [MM-SSTV] Re: 30M MMSSTV 10.132
To: MM-SSTV(AT)yahoogroups.com
Date: Wednesday, September 10, 2008, 7:15 AM
--- In MM-SSTV(AT)yahoogroups .com, "Rev. Father Johnny Shepherd"
<fieldservice(AT) ...> wrote:
> >
> > I think there might be some misinformation or Dan read the question
> > wrong ..
Yes there is a lot of bad information floating around.
First of all, 30 meters has a few restrictions like 200 WPEP and on a
non-interference basis. The issue of SSTV falls into the restriction
as defined in FCC rule § 97.309(a)(4) . A nice link that explains the
rule is http://www.arrl. org/FandES/ field/regulation s/techchar/ so now
the issue is "why?".
Well look at
http://www.arrl. org/FandES/ field/regulation s/news/part97/ d-
305.html#307f3 "(3) Only a RTTY or data emission using a specified
digital code listed in §97.309(a) of this Part may be transmitted.
The symbol rate must not exceed 300 bauds, or for frequency-shift
keying, the frequency shift between mark and space must not exceed 1
kHz." and then further it specifies "(a) Where authorized by §97.305
(c) and 97.307(f) of this Part, an amateur station may transmit a
RTTY or data emission using the following specified digital codes:
(4) An amateur station transmitting a RTTY or data emission using a
digital code specified in this paragraph may use any technique whose
technical characteristics have been documented publicly, such as
CLOVER, G-TOR, or PacTOR, for the purpose of facilitating
communications. " So - in plain english - SSTV is legal if it
conforms to those standards - does it?? The answer is yes and no.
Normal SSTV does not because it exceeds the bandwidth restrictions.
Narrow band SSTV and digital SSTV fall within the guidelines and
could be used on 30 meters. All that said, why do it if no one is
there listening???
K5LEH
Messages in this topic (22)
________________________________________________________________________
________________________________________________________________________
2a. Seeing a lot of SSTV-N on 30m
Posted by: "Russell Blair" russell_blair86(AT)yahoo.com russell_blair86
Date: Wed Sep 10, 2008 2:44 pm ((PDT))
Sorry, I do see your signal but I have a lot of QRM today it is raining.
I hope thing will get better. Thnaks.
Russell NC5O
=================
Russell Blair (NC5O) Skype-Russell Blair Hell Field #300 DRCC #55
Messages in this topic (3)
________________________________________________________________________
2b. Re: Seeing a lot of SSTV-N on 30m
Posted by: "ve3wej gmail" ve3wej(AT)gmail.com ve3wej
Date: Wed Sep 10, 2008 5:44 pm ((PDT))
I am seeing signals, too, but few fskid to tell who they all were..
VE3WEJ
Dave Garber
10-X # 23465
echolink # 52852
irlp node 2202
email ve3wej(AT)rac.ca
----- Original Message -----
From: "Russell Blair" <russell_blair86(AT)yahoo.com>
To: "MMSSTV" <MM-SSTV(AT)yahoogroups.com>
Sent: Wednesday, September 10, 2008 5:44 PM
Subject: [MM-SSTV] Seeing a lot of SSTV-N on 30m
> > Sorry, I do see your signal but I have a lot of QRM today it is raining. I
> > hope thing will get better. Thnaks.
> >
> > Russell NC5O
> >
> > Russell Blair (NC5O) Skype-Russell Blair Hell Field #300 DRCC #55
Messages in this topic (3)
________________________________________________________________________
2c. Re: Seeing a lot of SSTV-N on 30m
Posted by: "Russell Blair" russell_blair86(AT)yahoo.com russell_blair86
Date: Wed Sep 10, 2008 6:03 pm ((PDT))
Hi Dave, Ya same hr a lot of CQ's from N4WI and even a DX station PZ5RA as
well, nice to see all the activity, Ya some on them were on Martin 2 and
scottie 2. so hope they will move over to SSTV-N.
Russell NC5O
=================
Russell Blair (NC5O)
Skype-Russell Blair
Hell Field #300
DRCC #55
--- On Wed, 9/10/08, ve3wej gmail <ve3wej(AT)gmail.com> wrote:
From: ve3wej gmail <ve3wej(AT)gmail.com>
Subject: Re: [MM-SSTV] Seeing a lot of SSTV-N on 30m
To: MM-SSTV(AT)yahoogroups.com
Date: Wednesday, September 10, 2008, 7:43 PM
I am seeing signals, too, but few fskid to tell who they all were..
VE3WEJ
Dave Garber
10-X # 23465
echolink # 52852
irlp node 2202
email ve3wej(AT)rac.ca
----- Original Message -----
From: "Russell Blair" <russell_blair86(AT) yahoo.com>
To: "MMSSTV" <MM-SSTV(AT)yahoogroups .com>
Sent: Wednesday, September 10, 2008 5:44 PM
Subject: [MM-SSTV] Seeing a lot of SSTV-N on 30m
> > Sorry, I do see your signal but I have a lot of QRM today it is raining. I
> > hope thing will get better. Thnaks.
> >
> > Russell NC5O
> >
> > ============ =====
> > Russell Blair (NC5O) Skype-Russell Blair Hell Field #300 DRCC #55
Messages in this topic (3)
________________________________________________________________________
________________________________________________________________________
3. someone using (Martin 2 mode on 30m)
Posted by: "Russell Blair" russell_blair86(AT)yahoo.com russell_blair86
Date: Wed Sep 10, 2008 4:17 pm ((PDT))
I cant copy it very good but it martin 2 mode and it should not be on 30m.
Russell
=================
Russell Blair (NC5O) Skype-Russell Blair Hell Field #300 DRCC #55
------------------------------------------------------------------------
******************************************************************
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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