| |
CX2SA > SATDIG 11.04.10 17:05l 1136 Lines 32947 Bytes #999 (0) @ WW
BID : AMSATBB5159
Read: GUEST
Subj: AMSAT-BB-digest V5 159
Path: IZ3LSV<IK6ZDE<IW0QNL<F4BWT<F1BBI<CX2SA
Sent: 100411/1603Z @:CX2SA.LAV.URY.SA #:52347 [Minas] FBB7.00e $:AMSATBB5159
From: CX2SA@CX2SA.LAV.URY.SA
To : SATDIG@WW
Today's Topics:
1. Placentia (CA) Sat Demo / Presentation (Clint Bradford)
2. Re: BeeSat at 4800 GMSK (Nathaniel S. Parsons)
3. Re: BeeSat at 4800 GMSK (Nathaniel S. Parsons)
4. Re: BeeSat at 4800 GMSK (Art McBride)
5. Re: [ao51-modes] Re: Re: AO-51 power up, PL test tomorrow (OZ1MY)
6. Re: Arecibo on 432 MHz Moon Bounce (some calculations)
(G0MRF@xxx.xxxx
7. Re: AO-51 power up, PL test tomorrow (Alan Cresswell)
8. Re: [ao51-modes] Re: Re: AO-51 power up, PL test tomorrow
(Mark L. Hammond)
9. Re: BeeSat at 4800 GMSK (Tom Azlin N4ZPT)
10. QSOs (Tom Azlin N4ZPT)
11. Remarks (ps8rf Piraja)
12. Re: usb to serial adapter woes (Gary "Joe" Mayfield)
13. Re: Remarks (Luc Leblanc)
14. HO-68 Schedule - 11-18 Apr 2010 (Alan Kung)
15. Nab convention (newsradio6@xxxxx.xxxx
----------------------------------------------------------------------
Message: 1
Date: Sat, 10 Apr 2010 23:19:30 -0400 (EDT)
From: Clint Bradford <clintbrad4d@xxxxxxxxx.xxx>
Subject: [amsat-bb] Placentia (CA) Sat Demo / Presentation
To: amsat-bb@xxxxx.xxx
Message-ID:
<20328055.1270955970130.JavaMail.root@xxxxxxxxxxxxx.xxx.xx.xxxxxxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
Clint Bradford, K6LCS, will be presenting his 'Working Amateur Satellites
With Your HT' multimedia session at the April 13, 2010 meeting of the
Placentia RACES organization. All are welcome to attend.
"Tentatively, we'll have a workable pass of AO-51 at 6:05PM that evening,"
Clint reports. If you would like to show up early, Clint will be working the
satellite from the parking lot.
Tuesday, April 13, 2010
Placentia RACES meeting starts at 7PM
City of Placentia Police Department / City Hall Conference Room
401 East Chapman Avenue
Placentia CA 92870
Attendees should download Clint's four-page tutorial and radio programming
matrix before the meeting from ... http://www.work-sat.com
And Clint welcomes pre-presentation questions - call him at 909-241-7666, or
send email to clint@xxxxxxxxxxxxx.xxx
----------------------------------
Clint Bradford, K6LCS
http://www.clintbradford.com
------------------------------
Message: 2
Date: Sun, 11 Apr 2010 01:01:40 -0400
From: "Nathaniel S. Parsons" <nsp25@xxxxxxx.xxx>
Subject: [amsat-bb] Re: BeeSat at 4800 GMSK
To: Tom Azlin N4ZPT <n4zpt@xxx.xxx>
Cc: AMSAT-BB <amsat-bb@xxxxx.xxx>
Message-ID:
<o2xe9267a811004102201l5f565881j9ce3ac1bebc9acb8@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
Ah, thanks for clarifying. Unfortunately, if I understand you correctly, we
would have to talk to our satellite via digital voice, or at 128kbps, which
would be great if we could!
-Nate
On Sat, Apr 10, 2010 at 10:15 PM, Tom Azlin N4ZPT <n4zpt@xxx.xxx> wrote:
> Well, make that the digital voice part of the protocol. The high speed
> digital data part is up to 128kbps which was not what I was thinking of.
>
> 73, tom n4zpt
>
> Tom Azlin N4ZPT wrote:
>
>> Hi Nate,
>>
>> the D-STAR protocol is only GMSK at 4800 bps and they selected a
>> time-bandwidth product of 0.5. 4,800 bps or 4k8 is perhaps not talked about
>> as that IS the standard for D-STAR. So the software there might be
>> adaptable. that is the reason I thought to suggest it.
>>
>> Good luck and 73, Tom n4zpt
>>
>>
>>
>> Nathaniel S. Parsons wrote:
>>
>>> Hi Tom,
>>>
>>> My mind had indeed played a trick on me, and I remembered MFSK as MSK.
>>>
>>> As far as the DStar group goes, I don't see any mention of 4800 bps or
>>> 4k8
>>> kbps on the public page, so if it's not the group's focus, I don't want
>>> to
>>> have to rely on that solution.
>>>
>>> Thanks,
>>> -Nate KC2SVI
>>>
>> _______________________________________________
>>
>> Sent via AMSAT-BB@xxxxx.xxx. Opinions expressed are those of the author.
>> Not an AMSAT-NA member? Join now to support the amateur satellite program!
>> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
>>
>>
------------------------------
Message: 3
Date: Sun, 11 Apr 2010 01:31:30 -0400
From: "Nathaniel S. Parsons" <nsp25@xxxxxxx.xxx>
Subject: [amsat-bb] Re: BeeSat at 4800 GMSK
To: Mike Rupprecht <mail@xxxxxxxxxxxxxx.xx>
Cc: AMSAT-BB <amsat-bb@xxxxx.xxx>
Message-ID:
<p2ge9267a811004102231nf90112e1rf30c91300429d644@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
Hi Mike,
Thanks for the reply while we still have time to fix things and stay on
schedule.
Do you think it would be feasible to implement Mobitex in software on a ?C,
given a transceiver in transparent mode (will modulate and send any bits it
receives on serial, and demodulate/receive any RF it receives)? We already
have one dedicated to comms, and all other algorithms take place on a
separate processor. I ask because at this point, it would be easier to
change the software than the hardware (software has no mass or volume).
I'd say Block formatting, CRC and bit & Frame Sync would be easy enough
(everything's a multiple of a byte) because they're completely described,
but the interleaving and scrambling aren't which makes things much harder.
-Nate KC2SVI
On Fri, Apr 9, 2010 at 4:03 AM, Mike Rupprecht <mail@xxxxxxxxxxxxxx.xx>wrote:
> Hi Nate,
>
> Sorry for the long delay....
>
> MixW doesn't support GMSK. You mix that with MFSK.
>
> BeeSat has two CMX909B modems (CML) onboard. The data is sent in the
> MOBITEX
> format, not AX.25 !
> See here for more information about Mobitex:
> http://en.wikipedia.org/wiki/Mobitex
>
> The CMX909B is a half-duplex Gaussian Minimum Shift Keyed (GMSK) BT = 0.3
> modem data pump with on-chip packet data handling. GMSK modulation
> optimises
> the data throughput for a given bandwidth RF channel and the on-chip packet
> data handling relieves the host ?C of regular processing tasks, such as
> maintaining Bit and Frame Synchronisation, Block Formatting, CRC and FEC
> Error Processing, Data Interleaving and Scrambling.
>
> 73, Mike
> DK3WN
>
>
>
>
>
>
>
> -----Urspr?ngliche Nachricht-----
> Von: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx Im
> Auftrag von Tom Azlin N4ZPT
> Gesendet: Freitag, 9. April 2010 00:28
> An: AMSAT-BB
> Betreff: [amsat-bb] Re: BeeSat at 4800 GMSK
>
> Hi Nate,
>
> I was not aware MixW had MSK in it but still identical to GMSK. Perhaps
> you are thinking of MFSK? In the MixW program there is MSFK16, a
> multitone frequency shift signal, is supported, but not Minimum Shift
> Keying or Gaussian Minimum Shift Keying signals. And also FSK, aka RTTY.
>
> There is work going on to make a sound card 4800 bps 0.5 time-bandwidth
> product GMSK soundcard modems for use in GMSK DV adapters to use with
> D-STAR radios. Perhaps that could be adapted for your purpose?
>
> http://www.qsl.net/kb9mwr/projects/voip/dstar/G4KLX.html seems to
> describe some of the work.
>
> http://groups.yahoo.com/group/dstar_development/ and
> ttp://groups.yahoo.com/group/pcrepeatercontroller/ are where I see the
> discussion underway.
>
> Separate discussion is using an external sound card interface like the
> Rigblaster, to connect a computer and radio.
>
> 73, Tom n4zpt
>
> Nathaniel S. Parsons wrote:
> > Can I assume MSK=GMSK? I thought they were different, but they are the
> same,
> > and since MixW has MSK, and I could use that with a Rigblaster, etc,
> right?
> >
> > -Nate
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. Opinions expressed are those of the author.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
>
>
------------------------------
Message: 4
Date: Sat, 10 Apr 2010 23:24:40 -0700
From: "Art McBride" <kc6uqh@xxx.xxx>
Subject: [amsat-bb] Re: BeeSat at 4800 GMSK
To: "'Nathaniel S. Parsons'" <nsp25@xxxxxxx.xxx>, "'Tom Azlin N4ZPT'"
<n4zpt@xxx.xxx>
Cc: 'AMSAT-BB' <amsat-bb@xxxxx.xxx>
Message-ID: <196ED22F6D9544DCBAE390035AD6F503@xxxxxx>
Content-Type: text/plain; charset="us-ascii"
D-Star protocol is 4.8kb/sec for voice 1.2 kb for FEC and 1.2kb for data. It
is GMSK data, transmit rate is 3.6KHz max transmission rate, (7.2kb NRZ),
deviation is 1.8 KHz for a modulation index of 0.5. BW per Carlson's rule
is 7.2 KHz
A vocoder module provides for the voice compression. The Data side is used
for Call Sign, Name, City/ State, Brag Tape, GPS position, and Texting all
done with voice simultaneously. D-Star is not very successful in mobile
operation. I have had lots of conversations go R2D2 from a truck or car
passing me. From a fixed position range is surprisingly good. When used on a
Satellite this narrow mode I suspect is very sensitive to Doppler as well as
multipath. Circular antennas on both ends will solve multipath, but Doppler
shift must be dealt with.
Art,
KC6UQH
-----Original Message-----
From: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx On
Behalf Of Nathaniel S. Parsons
Sent: Saturday, April 10, 2010 10:02 PM
To: Tom Azlin N4ZPT
Cc: AMSAT-BB
Subject: [amsat-bb] Re: BeeSat at 4800 GMSK
Ah, thanks for clarifying. Unfortunately, if I understand you correctly, we
would have to talk to our satellite via digital voice, or at 128kbps, which
would be great if we could!
-Nate
On Sat, Apr 10, 2010 at 10:15 PM, Tom Azlin N4ZPT <n4zpt@xxx.xxx> wrote:
> Well, make that the digital voice part of the protocol. The high speed
> digital data part is up to 128kbps which was not what I was thinking of.
>
> 73, tom n4zpt
>
> Tom Azlin N4ZPT wrote:
>
>> Hi Nate,
>>
>> the D-STAR protocol is only GMSK at 4800 bps and they selected a
>> time-bandwidth product of 0.5. 4,800 bps or 4k8 is perhaps not talked
about
>> as that IS the standard for D-STAR. So the software there might be
>> adaptable. that is the reason I thought to suggest it.
>>
>> Good luck and 73, Tom n4zpt
>>
>>
>>
>> Nathaniel S. Parsons wrote:
>>
>>> Hi Tom,
>>>
>>> My mind had indeed played a trick on me, and I remembered MFSK as MSK.
>>>
>>> As far as the DStar group goes, I don't see any mention of 4800 bps or
>>> 4k8
>>> kbps on the public page, so if it's not the group's focus, I don't want
>>> to
>>> have to rely on that solution.
>>>
>>> Thanks,
>>> -Nate KC2SVI
>>>
>> _______________________________________________
>>
>> Sent via AMSAT-BB@xxxxx.xxx. Opinions expressed are those of the author.
>> Not an AMSAT-NA member? Join now to support the amateur satellite
program!
>> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
>>
>>
_______________________________________________
Sent via AMSAT-BB@xxxxx.xxx. Opinions expressed are those of the author.
Not an AMSAT-NA member? Join now to support the amateur satellite program!
Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
__________ Information from ESET NOD32 Antivirus, version of virus signature
database 5016 (20100410) __________
The message was checked by ESET NOD32 Antivirus.
http://www.eset.com
__________ Information from ESET NOD32 Antivirus, version of virus signature
database 5016 (20100410) __________
The message was checked by ESET NOD32 Antivirus.
http://www.eset.com
__________ Information from ESET NOD32 Antivirus, version of virus signature
database 5016 (20100410) __________
The message was checked by ESET NOD32 Antivirus.
http://www.eset.com
------------------------------
Message: 5
Date: Sun, 11 Apr 2010 09:35:05 +0200
From: "OZ1MY" <oz1my@xxxxxx.xx>
Subject: [amsat-bb] Re: [ao51-modes] Re: Re: AO-51 power up, PL test
tomorrow
To: "Andrew Glasbrenner" <glasbrenner@xxxxxxxxxx.xxx>, "Amsat-BB"
<amsat-bb@xxxxx.xxx>, "AO51 Modes" <ao51-modes@xxxxx.xxx>
Message-ID: <001101cad949$81512820$7b01a8c0@xxxxxx.xx>
Content-Type: text/plain; charset="iso-8859-1"
Hi Drew,
I listened to a pass with AOS here at 0649 UTC.
AO-51 turned the TX off as it shall - but it was soon
put on by someone.
I did not time it.
A question:
If people use a 67 Hz tone before the TX turns off will
that start a new 120 sec. periode ?
Have a nice Sunday all.
73 OZ1MY
Ib
----- Original Message -----
From: Andrew Glasbrenner
To: Amsat-BB ; AO51 Modes
Sent: Sunday, April 11, 2010 12:27 AM
Subject: [ao51-modes] Re: [amsat-bb] Re: AO-51 power up, PL test tomorrow
PL is on as of about 2215Z. Before LOS I heard it drop twice for a second
or two until it heard a valid tone again. This will happen about every 120
seconds. Reports are welcome, especially from remote users/areas.
73, Drew KO4MA
------------------------------
Message: 6
Date: Sun, 11 Apr 2010 03:53:14 EDT
From: G0MRF@xxx.xxx
Subject: [amsat-bb] Re: Arecibo on 432 MHz Moon Bounce (some
calculations)
To: amsat-bb@xxxxx.xxx
Message-ID: <5fb8b.6cc467e2.38f2d9ea@xxx.xxx>
Content-Type: text/plain; charset="US-ASCII"
A quick look at the access from Europe shows that the moon is in a similar
location to the sun next weekend. So higher gain antennas on 70cm will help
reduce sun noise too.
Good luck Dom, thanks for the analysis.
73
David G0MRF
The above calculation shows that it is very difficult to hear KP4AO or be
heard using a small hand-held yagi pointed at the moon.
Have fun
73" de
i8CVS Domenico
------------------------------
Message: 7
Date: Sun, 11 Apr 2010 08:10:48 -0000
From: "Alan Cresswell" <alancresswell@xxxx.xx.xx>
Subject: [amsat-bb] Re: AO-51 power up, PL test tomorrow
To: "'Andrew Glasbrenner'" <glasbrenner@xxxxxxxxxx.xxx>, "'Amsat-BB'"
<amsat-bb@xxxxx.xxx>, "'AO51 Modes'" <ao51-modes@xxxxx.xxx>
Message-ID: <50475339048E4DF290027A90D5972721@xxxxxxxxx>
Content-Type: text/plain; charset="us-ascii"
Hi Drew,
AO-51 was off at AOS but turned on OK with short burst of tone at 0748UT.
No problems from then on although there was one short drop-out even when I
had tone on. Worked VKs OK. Two stations with tone and two without. One
drop-out easily fixed for a non tone station with a short tone burst.
Still going OK with the VK's at LOS here at around 0754UT.
73
Alan
ZL2BX
-----Original Message-----
From: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx On
Behalf Of Andrew Glasbrenner
Sent: Saturday, 10 April 2010 22:28
To: Amsat-BB; AO51 Modes
Subject: [amsat-bb] Re: AO-51 power up, PL test tomorrow
PL is on as of about 2215Z. Before LOS I heard it drop twice for a
second or two until it heard a valid tone again. This will happen about
every 120 seconds. Reports are welcome, especially from remote users/areas.
73, Drew KO4MA
------------------------------
Message: 8
Date: Sun, 11 Apr 2010 06:34:08 -0400
From: "Mark L. Hammond" <marklhammond@xxxxx.xxx>
Subject: [amsat-bb] Re: [ao51-modes] Re: Re: AO-51 power up, PL test
tomorrow
To: "OZ1MY" <oz1my@xxxxxx.xx>, "Andrew Glasbrenner"
<glasbrenner@xxxxxxxxxx.xxx>, "Amsat-BB" <amsat-bb@xxxxx.xxx>, "AO51
Modes" <ao51-modes@xxxxx.xxx>
Message-ID: <4Aa41e0081e3qRF05Aa5bk@xxxxx.xxx>
Content-Type: text/plain; charset="us-ascii"
Hello Ib,
Thank you for the report.
The transmitter shuts off (for about a second, maybe less) after 2 minutes,
even if people are talking with a 67Hz tone. So, a new 120 sec period will
not start until the current one ends.
The bird was loud this morning! Lots of activity for an early (6:15 am
local) pass.
73,
Mark N8MH
At 09:35 AM 4/11/2010 +0200, OZ1MY wrote:
>Hi Drew,
>I listened to a pass with AOS here at 0649 UTC.
>AO-51 turned the TX off as it shall - but it was soon
>put on by someone.
>I did not time it.
>
>A question:
>If people use a 67 Hz tone before the TX turns off will
>that start a new 120 sec. periode ?
>
>Have a nice Sunday all.
>73 OZ1MY
>Ib
>----- Original Message -----
>From: <mailto:glasbrenner@xxxxxxxxxx.xxx>Andrew Glasbrenner
>To: <mailto:amsat-bb@xxxxx.xxx>Amsat-BB ; <mailto:ao51-modes@xxxxx.xxx>AO51
Modes
>Sent: Sunday, April 11, 2010 12:27 AM
>Subject: [ao51-modes] Re: [amsat-bb] Re: AO-51 power up, PL test tomorrow
>
>PL is on as of about 2215Z. Before LOS I heard it drop twice for a second
or two until it heard a valid tone again. This will happen about every 120
seconds. Reports are welcome, especially from remote users/areas.
>
>73, Drew KO4MA
>
>
>_______________________________________________
>Via the AO51-modes mailing list courtesy of AMSAT-NA
>AO51-modes@xxxxx.xxx
>http://amsat.org/mailman/listinfo/ao51-modes
Mark L. Hammond [N8MH]
------------------------------
Message: 9
Date: Sun, 11 Apr 2010 07:25:10 -0400
From: Tom Azlin N4ZPT <n4zpt@xxx.xxx>
Subject: [amsat-bb] Re: BeeSat at 4800 GMSK
To: "Nathaniel S. Parsons" <nsp25@xxxxxxx.xxx>
Cc: AMSAT-BB <amsat-bb@xxxxx.xxx>
Message-ID: <4BC1B196.1020201@xxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
NO. I was simply saying that the open source is there for the 4800 bps
GMSK sound card modem. NOT using D-STAR Digital Voice. That has already
been done via satellite.
NO, I was just saying ignore the high speed mode.
73, Tom n4zpt
Nathaniel S. Parsons wrote:
> Ah, thanks for clarifying. Unfortunately, if I understand you correctly, we
> would have to talk to our satellite via digital voice, or at 128kbps, which
> would be great if we could!
>
> -Nate
>
> On Sat, Apr 10, 2010 at 10:15 PM, Tom Azlin N4ZPT <n4zpt@xxx.xxx> wrote:
>
>> Well, make that the digital voice part of the protocol. The high speed
>> digital data part is up to 128kbps which was not what I was thinking of.
>>
>> 73, tom n4zpt
>>
>> Tom Azlin N4ZPT wrote:
>>
>>> Hi Nate,
>>>
>>> the D-STAR protocol is only GMSK at 4800 bps and they selected a
>>> time-bandwidth product of 0.5. 4,800 bps or 4k8 is perhaps not talked
about
>>> as that IS the standard for D-STAR. So the software there might be
>>> adaptable. that is the reason I thought to suggest it.
>>>
>>> Good luck and 73, Tom n4zpt
>>>
>>>
>>>
>>> Nathaniel S. Parsons wrote:
>>>
>>>> Hi Tom,
>>>>
>>>> My mind had indeed played a trick on me, and I remembered MFSK as MSK.
>>>>
>>>> As far as the DStar group goes, I don't see any mention of 4800 bps or
>>>> 4k8
>>>> kbps on the public page, so if it's not the group's focus, I don't want
>>>> to
>>>> have to rely on that solution.
>>>>
>>>> Thanks,
>>>> -Nate KC2SVI
>>>>
>>> _______________________________________________
>>>
>>> Sent via AMSAT-BB@xxxxx.xxx. Opinions expressed are those of the author.
>>> Not an AMSAT-NA member? Join now to support the amateur satellite program!
>>> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
>>>
>>>
>
------------------------------
Message: 10
Date: Sun, 11 Apr 2010 07:31:25 -0400
From: Tom Azlin N4ZPT <n4zpt@xxx.xxx>
Subject: [amsat-bb] QSOs
To: kc6uqh@xxx.xxx
Cc: 'AMSAT-BB' <amsat-bb@xxxxx.xxx>
Message-ID: <4BC1B30D.3010102@xxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
I was not trying to start a D-STAR discussion! I was simply saying that
there are 4800 bps GMSK sound card modems being worked on and pointed to
the groups where that discussion is underway. Ignore the protocol and
content and look at the modem design in software. Then go from there.
D-STAR DV has already been used via satellite and it worked fine is what
I understood. But was just an experiment not a proposal for a new
satellite mode.
73, Tom n4zpt
Art McBride wrote:
> D-Star protocol is 4.8kb/sec for voice 1.2 kb for FEC and 1.2kb for data. It
> is GMSK data, transmit rate is 3.6KHz max transmission rate, (7.2kb NRZ),
> deviation is 1.8 KHz for a modulation index of 0.5. BW per Carlson's rule
> is 7.2 KHz
> A vocoder module provides for the voice compression. The Data side is used
> for Call Sign, Name, City/ State, Brag Tape, GPS position, and Texting all
> done with voice simultaneously. D-Star is not very successful in mobile
> operation. I have had lots of conversations go R2D2 from a truck or car
> passing me. From a fixed position range is surprisingly good. When used on a
> Satellite this narrow mode I suspect is very sensitive to Doppler as well as
> multipath. Circular antennas on both ends will solve multipath, but Doppler
> shift must be dealt with.
> Art,
> KC6UQH
>
> -----Original Message-----
> From: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx On
> Behalf Of Nathaniel S. Parsons
> Sent: Saturday, April 10, 2010 10:02 PM
> To: Tom Azlin N4ZPT
> Cc: AMSAT-BB
> Subject: [amsat-bb] Re: BeeSat at 4800 GMSK
>
> Ah, thanks for clarifying. Unfortunately, if I understand you correctly, we
> would have to talk to our satellite via digital voice, or at 128kbps, which
> would be great if we could!
>
> -Nate
>
> On Sat, Apr 10, 2010 at 10:15 PM, Tom Azlin N4ZPT <n4zpt@xxx.xxx> wrote:
>
>> Well, make that the digital voice part of the protocol. The high speed
>> digital data part is up to 128kbps which was not what I was thinking of.
>>
>> 73, tom n4zpt
>>
>> Tom Azlin N4ZPT wrote:
>>
>>> Hi Nate,
>>>
>>> the D-STAR protocol is only GMSK at 4800 bps and they selected a
>>> time-bandwidth product of 0.5. 4,800 bps or 4k8 is perhaps not talked
> about
>>> as that IS the standard for D-STAR. So the software there might be
>>> adaptable. that is the reason I thought to suggest it.
>>>
>>> Good luck and 73, Tom n4zpt
>>>
>>>
>>>
>>> Nathaniel S. Parsons wrote:
>>>
>>>> Hi Tom,
>>>>
>>>> My mind had indeed played a trick on me, and I remembered MFSK as MSK.
>>>>
>>>> As far as the DStar group goes, I don't see any mention of 4800 bps or
>>>> 4k8
>>>> kbps on the public page, so if it's not the group's focus, I don't want
>>>> to
>>>> have to rely on that solution.
>>>>
>>>> Thanks,
>>>> -Nate KC2SVI
>>>>
>>> _______________________________________________
>>>
>>> Sent via AMSAT-BB@xxxxx.xxx. Opinions expressed are those of the author.
>>> Not an AMSAT-NA member? Join now to support the amateur satellite
> program!
>>> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
>>>
>>>
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. Opinions expressed are those of the author.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
>
> __________ Information from ESET NOD32 Antivirus, version of virus signature
> database 5016 (20100410) __________
>
> The message was checked by ESET NOD32 Antivirus.
>
> http://www.eset.com
>
>
>
>
> __________ Information from ESET NOD32 Antivirus, version of virus signature
> database 5016 (20100410) __________
>
> The message was checked by ESET NOD32 Antivirus.
>
> http://www.eset.com
>
>
>
> __________ Information from ESET NOD32 Antivirus, version of virus signature
> database 5016 (20100410) __________
>
> The message was checked by ESET NOD32 Antivirus.
>
> http://www.eset.com
>
>
>
------------------------------
Message: 11
Date: Sun, 11 Apr 2010 14:38:28 +0300
From: ps8rf Piraja <ps8rf@xxxxxxx.xxx>
Subject: [amsat-bb] Remarks
To: <amsat-bb@xxxxx.xxx>
Message-ID: <SNT121-W493DCC258B768F906093C8E0130@xxx.xxx>
Content-Type: text/plain; charset="iso-8859-1"
Hello Friends,
I have two observations:
The first - the team control of the AO-51 correctly employed the use of PL
tone to activate the bird. Here in South America constantly listen to
interference from phones and others strangers broadcasts through its
downlink. I hope the use of PL tone is adopted and so permanent.
The second observation is related to EME - our friend Roland, PY4ZBZ managed
to received the signals from the Arecibo Radio Observatory on 22/03/2010 at
21:30 UTC in 432.045 MHz with only a small UHF antenna for 6 elements and a
simple FT1000d transceiver. Roland with his equipment received signals in CW
and SSB. Congratulations to our dear friend Roland, who with his feat, he
broke the paradigm that is not possible with a simple antenna on hand to
listen to a broadcast EME. Taking into consideration the power and the
antenna used by KP4AO.
The Antena: http://www.qsl.net/py4zbz/antenas/owa.htm#9
CW audio: http://www.qsl.net/py4zbz/satelite/KP4AO_EME_CW.wav
SSB Audio: http://www.qsl.net/py4zbz/satelite/kp4ao_eme.wav
Entire informations and graphics: http://www.qsl.net/py4zbz/satelite.htm#rl
73,
Piraja, PS8RF
The Amateur Radio is supportive and helpful in any circumstance
_________________________________________________________________
O Internet Explorer 8 te d? dicas de como navegar mais seguro. Clique para
ler todas.
http://www.microsoft.com/brasil/windows/internet-explorer/?WT.mc_id=1500
------------------------------
Message: 12
Date: Sun, 11 Apr 2010 07:22:46 -0500
From: "Gary \"Joe\" Mayfield" <gary_mayfield@xxxxxxx.xxx>
Subject: [amsat-bb] Re: usb to serial adapter woes
To: <amsat-bb@xxxxx.xxx>
Message-ID: <COL114-DS2481DE849BFBF64D9547338A130@xxx.xxx>
Content-Type: text/plain; charset="us-ascii"
Do you have any PCI or similar slots? The card has worked well for me.
73,
Joe kk0sd
-----Original Message-----
From: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx On
Behalf Of Larry Gerhardstein
Sent: Saturday, April 10, 2010 6:37 PM
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] usb to serial adapter woes
I hope someone can shed light. I'm using SatPC32, but that does not
affect this problem.
Awhile back I was forced to recycle both of my older computers that had
one built in 9-pin serial port. Then, I connected the built-in port to
the GS-232B rotor interface. I also purchased some HL USB-RS232
USB-to-Serial adapters, a cable with USB on one end and a 9 pin RS232 on
the other end. I used this gadget to control my transceiver (which is a
IC910H).
Now I have a new computer which has no (zero) built in serial ports.
I'm trying to use two of the USB-to-Serial gadgets and have run into
trouble. If I disconnect all grounding back through the power, I can
get one of the two to work, either the rotor or the rig-control, but not
both at the same time. Without disconnecting grounding, neither work.
It does not matter whether I'm plugging the USB ends directly into the
computer, using a passive USB hub, or a powered hub--same result.
All I have to do to get this to fail...is... Even if the USB ends are
not plugged into the computer and the rig control box is powered off and
unplugged from power, if I just touch the metal shield on the USB cable
going to the rig control onto the shield connection in the computer or
hub, that causes the rotor control to fail. When it fails, The azimuth
reading on the G-5500 drops all the way to zero. The elevation meter is
unaffected.
It acts like a ground loop somewhere, but where and how? I've tried
disconnecting the coaxes from the transceiver but no change.
I'm thinking about scrapping these USB-to-Serial things and going to a
4-Port Keyspan box.
HELP!!
73, Larry W7IN - DN27 in Plains, Montana
_______________________________________________
Sent via AMSAT-BB@xxxxx.xxx. Opinions expressed are those of the author.
Not an AMSAT-NA member? Join now to support the amateur satellite program!
Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 13
Date: Sun, 11 Apr 2010 09:27:11 -0400
From: Luc Leblanc <lucleblanc6@xxxxxxxxx.xx>
Subject: [amsat-bb] Re: Remarks
To: amsat-bb@xxxxx.xxx
Message-ID: <4BC195EF.28191.BD21F@xxxxxxxxxxx.xxxxxxxxx.xx>
Content-Type: text/plain; charset=US-ASCII
On 11 Apr 2010 at 14:38, ps8rf Piraja wrote:
Date sent: Sun, 11 Apr 2010 14:38:28 +0300
From: ps8rf Piraja <ps8rf@xxxxxxx.xxx>
Subject: [amsat-bb] Remarks
To: amsat-bb@xxxxx.xxx
>
>
> Hello Friends,
>
>
> I have two observations:
>
>
> The first - the team control of the AO-51 correctly employed the use of PL
tone to activate the bird. Here in South America constantly
listen to interference from phones and others strangers broadcasts through
its downlink. I hope the use of PL tone is adopted and so
permanent.
I'm not sure if it will in any way as when the satellite will be open the
interference will still be present. The only one advantage will
be the inteference sources will not be able to open the satellite when no
one is using it.
>
>
> The second observation is related to EME - our friend Roland, PY4ZBZ
managed to received the signals from the Arecibo Radio Observatory
on 22/03/2010 at 21:30 UTC in 432.045 MHz with only a small UHF antenna
for 6 elements and a simple FT1000d transceiver. Roland with his
equipment received signals in CW and SSB. Congratulations to our dear
friend Roland, who with his feat, he broke the paradigm that is not
possible
with a simple antenna on hand to listen to a broadcast EME. Taking into
consideration the power and the antenna used by KP4AO.
Domenico I8CVS puts a very detailed math post on the subject it will be
challenging to check reality VS theory
>
Luc Leblanc VE2DWE
Skype VE2DWE
www.qsl.net/ve2dwe
DSTAR urcall VE2DWE
WAC BASIC CW PHONE SATELLITE
------------------------------
Message: 14
Date: Sun, 11 Apr 2010 23:57:06 +0800
From: "Alan Kung" <alankung@xxxxxxx.xxx.xxx.xx>
Subject: [amsat-bb] HO-68 Schedule - 11-18 Apr 2010
To: <amsat-bb@xxxxx.xxx>
Message-ID: <005701cad98f$a4cd5030$6c01a8c0@xxxxxxxxxxx>
Content-Type: text/plain; charset="gb2312"
11 Apr. 2010
================================
16:05...Turn On--FM
India, Africa, Middle East,
Europe,NA
16:50...Turn Off
17:55...Turn On--FM
Africa,Europe,Middle East,NA
18:40...Turn Off
12 Apr. 2010
================================
00:45...Turn On--FM
South America,NA,North Asia
01:30...Turn Off
01:41...Turn On--FM
North Asia,East Asia,South Asia
01:56...Turn Off
02:35...Turn On--FM
South America,NA,North Asia
03:20...Turn Off
19:05...Turn On--FM
Africa,Europe,NA
19:50...Turn Off
13 Apr. 2010
================================
00:30...Turn On--Packet
South America,NA,North Asia
01:15...Turn Off
02:15...Turn On--FM
South America,NA,North Asia
03:00...Turn Off
03:11...Turn On--FM
North Asia, East Asia, South Asia
03:24...Turn Off
11:00...Turn On--FM
South America,Oceania,Asia
11:40...Turn Off
17:20...Turn On--Packet
India,Middle East,Europe,NA
18:05...Turn Off
19:00...Turn On--FM
Africa,Europe,NA
19:45...Turn Off
14 Apr. 2010
=================================
01:12...Turn On--FM
North Asia,East Asia,South Asia
01:24...Turn Off
09:20...Turn On--FM
Oceania,East Asia,North Asia,Europe
10:05...Turn Off
12:25...Turn On--FM
South America,Oceania
13:10...Turn Off
18:50...Turn On--FM
Africa,Europe,NA
19:35...Turn Off
22:55...Turn On--Packet
NA,North Asia,East Asia,Oceania
23:40...Turn Off
15 Apr. 2010
=================================
02:37...Turn On--FM
North Asia,East Asia,South Asia
02:52...Turn Off
06:10...Turn On--Packet
NA,North Asia,Middle East,
Europe,Africa
06:55...Turn Off
10:50...Turn On--FM
Oceania,Asia,Europe,NA
11:35...Turn Off
16:45...Turn On--FM
Africa,India,Middle East,Europe,NA
17:30...Turn Off
18:35...Turn On--FM/SSTV
Africa,Europe,NA
19:20...Turn Off
16 Apr. 2010
================================
00:10...Turn On--Packet
South America,NA,North Asia
00:55...Turn Off
02:25...Turn On--FM
North Asia,East Asia,South Asia
02:41...Turn Off
10:35...Turn On--FM
Oceania,Asia,Europe
11:20...Turn Off
18:15...Turn On--Packet
India,Africa,Europe,NA
19:00...Turn Off
22:20...Turn On--FM
NA,North Asia,Oceania
23:05...Turn Off
17 Apr. 2010
================================
01:10...Turn On--FM
South America,NA,North Asia
01:55...Turn Off
02:09...Turn On--FM
North Asia,East Asia,South Asia
02:24...Turn Off
10:15...Turn On--FM
Oceania,Asia,Europe,NA
11:00...Turn Off
18:00...Turn On--FM/SSTV
Africa,Europe,NA
18:45...Turn Off
18 Apr. 2010
================================
00:50...Turn On--Packet
South America,NA,North Asia
01:35...Turn Off
03:36...Turn On--FM
North Asia,East Asia,South Asia
03:50...Turn Off
07:10...Turn On--FM/SSTV
North Asia,Europe,Africa
07:55...Turn Off
10:00...Turn On--Packet
Oceania,Asia,Europe
10:45...Turn Off
73
Alan Kung, BA1DU
HO-68(XW-1) Project Manager
www.camsat.cn
------------------------------
Message: 15
Date: Sun, 11 Apr 2010 16:01:11 +0000
From: newsradio6@xxxxx.xxx
Subject: [amsat-bb] Nab convention
To: "Amsat bb" <amsat-bb@xxxxx.xxx>
Message-ID:
<684290979-1271001621-cardhu_decombobulator_blackberry.rim.net-540564497-@xxxx
xx.xxxx.xxxx.xx.xxxxxxxxxx>
Content-Type: text/plain; charset="Windows-1252"
If any other sat users happen to be here in las vegas this week attending
the national association of broadcasters convention and want to meet up to
talk satelites, drop me an email "newsradio6@xxxxx.xxxx
John
VA3BL
Sent wirelessly from my BlackBerry device on the Bell network.
Envoy? sans fil par mon terminal mobile BlackBerry sur le r?seau de Bell.
------------------------------
_______________________________________________
Sent via amsat-bb@xxxxx.xxx. Opinions expressed are those of the author.
Not an AMSAT member? Join now to support the amateur satellite program!
http://amsat.org/mailman/listinfo/amsat-bb
End of AMSAT-BB Digest, Vol 5, Issue 159
****************************************
Read previous mail | Read next mail
| |
