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CX2SA > SATDIG 05.05.10 13:49l 1098 Lines 32783 Bytes #999 (0) @ WW
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Sent: 100505/1243Z @:CX2SA.LAV.URY.SA #:57674 [Minas] FBB7.00e $:AMSATBB5204
From: CX2SA@CX2SA.LAV.URY.SA
To : SATDIG@WW
Today's Topics:
1. Re: mmds downconverters for ao-51? (Bob- W7LRD)
2. Re: Happy 5th Birthday to HAMSAT (PE0SAT)
3. USB to Serial Converters (Frank Woolfe)
4. Satellite passes for open house TH. night (Dr. Jay Garlitz)
5. Re: USB to Serial Converters (Dave-K7DAA)
6. Re: Satellite passes for open house TH. night (Dr. Jay Garlitz)
7. Re: mmds downconverters for ao-51? (davekn4ok@xxx.xxxx
8. Re: Happy 5th Birthday to HAMSAT (i8cvs)
9. Re: USB to Serial Converters (Jeff KB2M)
10. Re: Field Day AO-51 configuration - another option
(Andrew Glasbrenner)
11. S Band interference was RE: Re: Field Day mode for AO-51
(Gary "Joe" Mayfield)
12. Re: mmds downconverters for ao-51? (Gary "Joe" Mayfield)
13. Re: mmds downconverters for ao-51? (Michael Heim, KD0AR)
14. Re: Field Day AO-51 configuration - another option
(Gary "Joe" Mayfield)
15. Re: mmds downconverters for ao-51? (davekn4ok@xxx.xxxx
16. Re: mmds downconverters for ao-51? (aflowers@xxxxxxxxxxx.xxxx
----------------------------------------------------------------------
Message: 1
Date: Wed, 5 May 2010 06:10:57 +0000 (UTC)
From: Bob- W7LRD <w7lrd@xxxxxxx.xxx>
Subject: [amsat-bb] Re: mmds downconverters for ao-51?
To: jfloyd@xx.xxxx.xxx
Cc: amsat-bb@xxxxx.xxx
Message-ID:
<422659169.13739521273039857147.JavaMail.root@xxxxxxx.xxxxxxxxxx.xx.xxxx.xxxxx
xx.xxx>
Content-Type: text/plain; charset=utf-8
I got one also John-If you figure it out let me know and I'll do likewise.
73 Bob W7LRD
----- Original Message -----
From: jfloyd@xx.xxxx.xxx
To: amsat-bb@xxxxx.xxx
Sent: Tuesday, May 4, 2010 2:37:32 PM GMT -08:00 US/Canada Pacific
Subject: [amsat-bb] ?mmds downconverters for ao-51?
Has anyone tried one of the itfs mmds downconverters like this
one on ebay:
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=110523087399&ssPageName=STR
K:MEWNX:IT
for ao-51 s band downlink? 75 ohm out and looks cheesey but
less than $30 shipped. it's cheap enough for me to play so I
bought one to experiment with, maybe just to remove the
downconverter. I would welcome stories of your experience or
just advice.
Thanks
John, kn4ge
_______________________________________________
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: 2
Date: Wed, 5 May 2010 09:11:28 +0200
From: "PE0SAT" <pe0sat@xxxxx.xx>
Subject: [amsat-bb] Re: Happy 5th Birthday to HAMSAT
To: amsat-bb@xxxxx.xxx
Cc: AMSAT-India <info@xxxxxxxxxx.xxx>
Message-ID: <20100505071128.88DB6230BE@xx.xxxxx.xx>
Content-Type: text/plain;charset=iso-8859-1
Hi Hamsat Team,
Thanks for building this great Amateur Satellite it is always a pleasure
to hear and work this great bird. I think when somebody will ask me what
my favorite linear transponder Satellite is VO-52 will be the first one
that crosses my mind.
And as somebody already mentioned, lets hope it will be working for
another long time.
I'll buy some cake and candles to celebrate here birthday :))
73 Jan PE0SAT
>> Comemorating the 5th birthday we would appreciate user
>> reports and feedback
>> about Hamsat.
>> Please email your reports , feedback & experiences
>>
>> Thank you ISRO and all who contributed to HAMSAT project.
>> Best 73
>> Pop
>> VU2POP
>> Director Technical
>> Amsat India
------------------------------
Message: 3
Date: Wed, 5 May 2010 17:39:41 +0930
From: "Frank Woolfe" <frankwoolfe@xxxxxxxx.xxx.xx>
Subject: [amsat-bb] USB to Serial Converters
To: <amsat-bb@xxxxx.xxx>
Message-ID: <201005050815.o4589foG004882@xxxxxx.xxx.xxxxxxxx.xxx.xx>
Content-Type: text/plain; charset="us-ascii"
Is anyone using a USB to Serial converter successfully to control a FT847??
Frank VK5KV..
------------------------------
Message: 4
Date: Wed, 5 May 2010 06:16:42 -0400
From: "Dr. Jay Garlitz" <drjay@xxxxxxxxxxx.xxx>
Subject: [amsat-bb] Satellite passes for open house TH. night
To: <amsat-bb@xxxxx.xxx>
Cc: fopalko@xxx.xxxx "'Dr. Jay Garlitz AA4FL'" <jgarlitz@xxx.xxx>
Message-ID:
<201005051016.o45AGetK003511@xxxxxx.xxx.xxxxxxxxxxxxxx.xxx>
Content-Type: text/plain; charset="us-ascii"
The satellite passes below start 22:35 UTC (6:35 local time) Thursday night
and follow until 10:16 pm local time. As you can see from the list below
there are satellite passes of many different satellites and modes. This is
a good evening to come by and learn how to use the satellites and the
advantages/disadvantages of each mode.
I hope to see you there!
Dr. Jay, AA4FL
AO-51 will be in the FM repeater mode J (2m up, 70cm down);
Japanese satellite FO-29 - inverting linear transponder mode J (2m SSB/CW
up, 70cm down);
AO-7, satellite from 1974, mode B (inverting 70cm SSB/CW up, 2m down) or
mode A (2m up, 10 SSB/CW down);
Saudi satellite SO-50 Mode J (2m FM up, 70 cm down);
HAMSAT Indian Satellite VO-52 inverting transponder mode B (inverting 70cm
SSB/CW up, 2m down);
New Chinese Satellite HO (Hope)-68 - inverting linear transponder mode J (2m
SSB/CW up, 70cm down)
WinAos QTH: -82.1/29.6 T#: 11813 Sat.: 7 [Standard]
----------------------------------------------------------
Day Object AOS (U) LOS Period maxEl AZ
----------------------------------------------------------
06.05.2010 FO-29 22:35 22:48 13 11 041 - 143
06.05.2010 AO-07 22:39 22:59 20 40 139 - 354
06.05.2010 SO-50 23:08 23:21 13 55 196 - 033
06.05.2010 AO-51 23:10 23:24 14 25 197 - 334
WinAos QTH: -82.1/29.6 T#: 11814 Sat.: 7 [Standard]
----------------------------------------------------------
Day Object AOS (U) LOS Period maxEl AZ
----------------------------------------------------------
07.05.2010 FO-29 00:19 00:36 17 71 010 - 199
07.05.2010 HAMSAT (VO-5200:28 00:29 01 00 066 - 048
07.05.2010 AO-07 00:32 00:52 20 36 188 - 334
07.05.2010 SO-50 00:50 01:01 11 12 254 - 007
07.05.2010 HO-68 01:18 01:35 17 25 128 - 359
07.05.2010 HAMSAT (VO-5201:57 02:09 12 50 155 - 355
07.05.2010 FO-29 02:06 02:16 10 08 341 - 260
------------------------------
Message: 5
Date: Wed, 5 May 2010 03:21:24 -0700
From: Dave-K7DAA <dave@xxxxx.xxx>
Subject: [amsat-bb] Re: USB to Serial Converters
To: Frank Woolfe <frankwoolfe@xxxxxxxx.xxx.xx>
Cc: amsat-bb@xxxxx.xxx
Message-ID: <3CEB4097-A2EF-4DD9-811E-605C09D3FCAC@xxxxx.xxx>
Content-Type: text/plain; charset=US-ASCII; format=flowed; delsp=yes
Yes. I'm using a Keyspan USA-19W with a MacBook Pro, and running OS
X. Works great, never a glitch. Sorry, that's probably not what you
wanted to hear if you're stuck with Windoze 100% of the time, but I do
occasionally cross over to the dark side when I want to run HRD. I
also have a copy of Win XP on my Mac for those crazy moments. ;-)
73,
Dave - K7DAA
On May 5, 2010, at 1:09 AM, Frank Woolfe wrote:
>
>
>
>
> Is anyone using a USB to Serial converter successfully to control a
> FT847??
>
>
>
> Frank VK5KV..
>
> _______________________________________________
> 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: 6
Date: Wed, 5 May 2010 06:39:23 -0400
From: "Dr. Jay Garlitz" <drjay@xxxxxxxxxxx.xxx>
Subject: [amsat-bb] Re: Satellite passes for open house TH. night
To: <amsat-bb@xxxxx.xxx>
Message-ID:
<201005051039.o45AdML0029418@xxxxxx.xxx.xxxxxxxxxxxxxx.xxx>
Content-Type: text/plain; charset="us-ascii"
Sorry about the posting with the list of passes for 5/6 and 5/7, intended
for UF listserv.but at least the AMSAT group can see how we use college
satellite nights as an educational experience.
Dr. Jay Garlitz, AA4FL
Gator ARC Faculty advisor.work us at W4DFU and get our new satellite QSL
card!
_____
From: Dr. Jay Garlitz [mailto:drjay@xxxxxxxxxxx.xxxx
Sent: Wednesday, May 05, 2010 6:17 AM
To: amsat-bb@xxxxx.xxx
Cc: 'Dr. Jay Garlitz AA4FL'; fopalko@xxx.xxx
Subject: Satellite passes for open house TH. night
The satellite passes below start 22:35 UTC (6:35 local time) Thursday night
and follow until 10:16 pm local time. As you can see from the list below
there are satellite passes of many different satellites and modes. This is
a good evening to come by and learn how to use the satellites and the
advantages/disadvantages of each mode.
I hope to see you there!
Dr. Jay, AA4FL
AO-51 will be in the FM repeater mode J (2m up, 70cm down);
Japanese satellite FO-29 - inverting linear transponder mode J (2m SSB/CW
up, 70cm down);
AO-7, satellite from 1974, mode B (inverting 70cm SSB/CW up, 2m down) or
mode A (2m up, 10 SSB/CW down);
Saudi satellite SO-50 Mode J (2m FM up, 70 cm down);
HAMSAT Indian Satellite VO-52 inverting transponder mode B (inverting 70cm
SSB/CW up, 2m down);
New Chinese Satellite HO (Hope)-68 - inverting linear transponder mode J (2m
SSB/CW up, 70cm down)
WinAos QTH: -82.1/29.6 T#: 11813 Sat.: 7 [Standard]
----------------------------------------------------------
Day Object AOS (U) LOS Period maxEl AZ
----------------------------------------------------------
06.05.2010 FO-29 22:35 22:48 13 11 041 - 143
06.05.2010 AO-07 22:39 22:59 20 40 139 - 354
06.05.2010 SO-50 23:08 23:21 13 55 196 - 033
06.05.2010 AO-51 23:10 23:24 14 25 197 - 334
WinAos QTH: -82.1/29.6 T#: 11814 Sat.: 7 [Standard]
----------------------------------------------------------
Day Object AOS (U) LOS Period maxEl AZ
----------------------------------------------------------
07.05.2010 FO-29 00:19 00:36 17 71 010 - 199
07.05.2010 HAMSAT (VO-5200:28 00:29 01 00 066 - 048
07.05.2010 AO-07 00:32 00:52 20 36 188 - 334
07.05.2010 SO-50 00:50 01:01 11 12 254 - 007
07.05.2010 HO-68 01:18 01:35 17 25 128 - 359
07.05.2010 HAMSAT (VO-5201:57 02:09 12 50 155 - 355
07.05.2010 FO-29 02:06 02:16 10 08 341 - 260
__________ Information from ESET NOD32 Antivirus, version of virus signature
database 5087 (20100505) __________
The message was checked by ESET NOD32 Antivirus.
http://www.eset.com
__________ Information from ESET NOD32 Antivirus, version of virus signature
database 5087 (20100505) __________
The message was checked by ESET NOD32 Antivirus.
http://www.eset.com
------------------------------
Message: 7
Date: Wed, 05 May 2010 07:04:27 -0400
From: davekn4ok@xxx.xxx
Subject: [amsat-bb] Re: mmds downconverters for ao-51?
To: amsat-bb@xxxxx.xxx
Message-ID: <8CCBA59DCB86BCB-117C-5D66@xxxxxxxxxxxx.xxxxxx.xxx.xxx>
Content-Type: text/plain; charset="us-ascii"
Does it have the downconverter built in? If so, I will make it work. LOL
Dave, kn4ok
-----Original Message-----
From: jfloyd@xx.xxxx.xxx
To: amsat-bb@xxxxx.xxx
Sent: Tue, May 4, 2010 3:37 pm
Subject: [amsat-bb] mmds downconverters for ao-51?
Has anyone tried one of the itfs mmds downconverters like this
ne on ebay:
ttp://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=110523087399&ssPageName=STRK
:MEWNX:IT
for ao-51 s band downlink? 75 ohm out and looks cheesey but
ess than $30 shipped. it's cheap enough for me to play so I
ought one to experiment with, maybe just to remove the
ownconverter. I would welcome stories of your experience or
ust advice.
hanks
ohn, kn4ge
______________________________________________
ent via AMSAT-BB@xxxxx.xxx. Opinions expressed are those of the author.
ot an AMSAT-NA member? Join now to support the amateur satellite program!
ubscription settings: http://amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 8
Date: Wed, 5 May 2010 13:11:21 +0200
From: "i8cvs" <domenico.i8cvs@xxx.xx>
Subject: [amsat-bb] Re: Happy 5th Birthday to HAMSAT
To: "pe0sat" <pe0sat@xxxxx.xx>, "AMSAT-BB" <amsat-bb@xxxxx.xxx>
Cc: AMSAT-India <info@xxxxxxxxxx.xxx>
Message-ID: <003c01caec43$b1a7ab40$0201a8c0@xxx.xx>
Content-Type: text/plain; charset="iso-8859-1"
----- Original Message -----
From: "PE0SAT" <pe0sat@xxxxx.xx>
To: <amsat-bb@xxxxx.xxx>
Cc: "AMSAT-India" <info@xxxxxxxxxx.xxx>
Sent: Wednesday, May 05, 2010 9:11 AM
Subject: [amsat-bb] Re: Happy 5th Birthday to HAMSAT
>
> Hi Hamsat Team,
>
> Thanks for building this great Amateur Satellite it is always a pleasure
> to hear and work this great bird. I think when somebody will ask me what
> my favorite linear transponder Satellite is VO-52 will be the first one
> that crosses my mind.
>
> And as somebody already mentioned, lets hope it will be working for
> another long time.
>
>
> I'll buy some cake and candles to celebrate here birthday :))
>
> 73 Jan PE0SAT
>
Hi Jan, PE0SAT
A great tanks also to William Leinejar PE1RAH who designed and built the
Dutch transponder on board of VO-52.
73" de
i8CVS Domenico
------------------------------
Message: 9
Date: Wed, 5 May 2010 07:15:02 -0400
From: "Jeff KB2M" <kb2m@xxxxxxx.xxx>
Subject: [amsat-bb] Re: USB to Serial Converters
To: "'Frank Woolfe'" <frankwoolfe@xxxxxxxx.xxx.xx>,
<amsat-bb@xxxxx.xxx>
Message-ID: <002001caec44$3517bd80$9f473880$@xxx>
Content-Type: text/plain; charset="us-ascii"
Yes. I'm using an 8 port Edgeport device with my 847. I use three of these
in my shack two 8 port, and one 4 port. All work flawlessly. You can find
them on Ebay, see item 320523234316 . I paid $25 to $40.
73 Jeff kb2m
-----Original Message-----
From: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx On
Behalf Of Frank Woolfe
Sent: Wednesday, May 05, 2010 4:10 AM
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] USB to Serial Converters
Is anyone using a USB to Serial converter successfully to control a FT847??
Frank VK5KV..
_______________________________________________
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: Wed, 05 May 2010 07:19:13 -0400
From: Andrew Glasbrenner <glasbrenner@xxxxxxxxxx.xxx>
Subject: [amsat-bb] Re: Field Day AO-51 configuration - another option
To: amsat-bb@xxxxxx.xxx
Cc: amsat-bb@xxxxx.xxxx KK5DO@xxxxx.xxx
Message-ID: <4BE15431.30907@xxxxxxxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>
> It is interesting that an organization like AMSAT, one that is trying
> to increase membership and raise funds for a new satellite, would
> try to limit the usefulness of its prime satellite to a few dozen
> stations (number based on WA4SCA's message from earlier today
> regarding L/U activity during Field Day last year) during the busiest
> on-air activity for hams across North America. Yes, V/U may
> be chaotic, no matter if the uplink mode is FM or SSB for Field Day.
> Work 20m SSB during Field Day, and that is also chaotic. We don't
> try to have ARRL rule out using SSB or CW on 20m during that
> weekend. Even V/U FM on AO-51 is a "good mode when everyone
> behaves", ;-)
>
No one is trying to limit the the usefulness. Exactly the opposite, the
idea is to pick the mode that is the MOST useful. It's a quantity versus
quality problem. On a typical V/U FM Field Day pass, very few contacts
actually get made, and most of the pass (at least on the east coast) is
nothing but a fragmented dogpile of pieces of calls, whistles, blowing
in the mike, etc. Some people enjoy that, others walk away in disgust,
and think "why would I want to be part of that mess".
It's my contention that we pick a mode on AO-51 that provides a more
challenging goal for the technically inclined portion of the hobby,
encourages clubs to actively seek help from their local AMSAT types, and
provides a more civilized environment on just one of the eight LEOs
likely to be active that weekend. Think of it as showcasing what amateur
satellites can be like on days other than Field Day. By limiting the
accessibility, we improve the quality of the experience for those
actively participating, and just listening. Again, AO-51 is one of many
satellites. If it were just AO-51, we wouldn't even be having this
conversation.
One option that hasn't been floated is trying a mode switch on the early
AM Sunday pass. We could go from L/U to V/U very easily. If we do this,
I'd like to work with Bruce and actually count the number of QSOs
reported per mode.
73, Drew KO4MA
73, Drew KO4MA
------------------------------
Message: 11
Date: Wed, 5 May 2010 06:19:35 -0500
From: "Gary \"Joe\" Mayfield" <gary_mayfield@xxxxxxx.xxx>
Subject: [amsat-bb] S Band interference was RE: Re: Field Day mode for
AO-51
To: <amsat-bb@xxxxx.xxx>
Message-ID: <COL114-DS21D705BF777C22AE4FA7C08AF40@xxx.xxx>
Content-Type: text/plain; charset="us-ascii"
Joe,
My neighbors have several "wireless" devices that operate close
enough to our frequencies to raise my noise level or produce a series of
clicks and other noises. The worst offenders are a wireless network and a
cordless phone. During the AO-40 era I bought a cordless phone from a
neighbor that was very troublesome. I have since moved to a country
location, and find it interesting that I can tell what direction town is by
moving my antenna (pointed at the horizon) and listening to the noise level
on mode S.
73,
Joe kk0sd
-----Original Message-----
From: Joe v Murray [mailto:k0vty@xxxx.xxxx
Sent: Tuesday, May 04, 2010 10:43 PM
To: gary_mayfield@xxxxxxx.xxx
Subject: Re: [amsat-bb] Re: Field Day mode for AO-51
Hi Joe
Your comment about Mode S interference interests me
I have not been on since AO-40
In those days there was no interference on mode S.
Unless it was another Ham.
Would you kindly explain?
Thanks
Joe K0VTY
===================
On Tue, 4 May 2010 22:22:54 -0500 "Gary \"Joe\" Mayfield"
<gary_mayfield@xxxxxxx.xxx> writes:
> I have L band gear. When the bird is in L/U Luc and I have a great
> time
> talking to each other. When the bird is in V/U I'll make half a
> dozen or
> more contacts in a pass. I voted for mode L, because I didn't
> believe V/U
> was an option and S band is becoming too full of interference.
>
> I have a couple questions:
>
> 1. The folks who can't eek out a contact with the handheld and
> Arrow during
> Field Day, have you practiced? It's how I have done it the last
> couple of
> years without that much trouble, patience and timing are the keys
> :-). We
> have a good Field Day location where I can see down to the horizon.
>
> 2. Has the single contact per FM bird rule really helped anyone?
> In the
> old days a couple big stations got on and essentially ran the bird.
> Is it
> fair? NO! but they handed out a lot of QSOs and we seemed to get
> more AMSAT
> Field Day entries as well.
>
> The one bird one contact has been a noble experiment, maybe it is
> time to
> examine the results.
>
> Hats off to the controllers for starting the discussion!
>
> 73, Just My Thoughts,
> Joe kk0sd
>
>
> -----Original Message-----
> From: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx
> On
> Behalf Of Andrew Glasbrenner
> Sent: Monday, May 03, 2010 4:33 PM
> To: Ng, Peter
> Cc: amsat-bb@xxxxx.xxxx ao51-modes@xxxxx.xxx
> Subject: [amsat-bb] Re: Field Day mode for AO-51
>
> Ng, Peter wrote:
> > ...sorry, I meant to vote for V/U mode as I only have VHF/UHF
> equipment!
> >
> >
> Keep in mind there will likely be three or four transponders birds,
> and
> two to four other FM birds available that weekend!
>
> It's been my perception that a good portion of AMSAT's sustaining
> members leave and breathe the highest tech they can manage. Eight
> out of
> eight satellites being V/U seems counter to that goal.
>
> Mark and Bob both make good points supporting at least one area of
> refuge for this portion of the AMSAT population. Personally, I think
> the
> V/U FM experience on Field Day is a big turnoff to newbies,
> especially
> since so many under-prepared, over-powered and out of practice
> once-a-year sat ops fail miserably to get those bonus points on FM.
>
> I bet someone in your area has 1.2 Ghz capability!
>
> 73, Drew KO4MA
> _______________________________________________
> 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
>
>
____________________________________________________________
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------------------------------
Message: 12
Date: Wed, 5 May 2010 06:24:15 -0500
From: "Gary \"Joe\" Mayfield" <gary_mayfield@xxxxxxx.xxx>
Subject: [amsat-bb] Re: mmds downconverters for ao-51?
To: <amsat-bb@xxxxx.xxx>
Message-ID: <COL114-DS176B9B98C6FC84DDEAD4638AF40@xxx.xxx>
Content-Type: text/plain; charset="us-ascii"
Wow, the famous 'cigar' antenna. At that price you can afford to play with
it.
73,
Joe kk0sd
-----Original Message-----
From: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx On
Behalf Of jfloyd@xx.xxxx.xxx
Sent: Tuesday, May 04, 2010 4:38 PM
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] mmds downconverters for ao-51?
Has anyone tried one of the itfs mmds downconverters like this
one on ebay:
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=110523087399&ssPageName=S
TRK:MEWNX:IT
for ao-51 s band downlink? 75 ohm out and looks cheesey but
less than $30 shipped. it's cheap enough for me to play so I
bought one to experiment with, maybe just to remove the
downconverter. I would welcome stories of your experience or
just advice.
Thanks
John, kn4ge
_______________________________________________
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: Wed, 5 May 2010 04:36:51 -0700 (PDT)
From: "Michael Heim, KD0AR" <kd0ar@xxxxxxxxx.xxx>
Subject: [amsat-bb] Re: mmds downconverters for ao-51?
To: amsat-bb@xxxxx.xxx
Message-ID: <797443.89568.qm@xxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=us-ascii
You will be astounded with the signal you will get from one of these
downconverters. I used this modification:
http://www.rvhfg.org/articles/k0sm/basic%20mods.php
________________________________
Michael Heim
Chief Engineer, Forever Broadcasting
New Castle PA
WKST WJST WWGY
814-671-0666
Contract Engineer
Cell: 330-502-6379
ARS KD0AR
________________________________
________________________________
From: "Gary "Joe" Mayfield" <gary_mayfield@xxxxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Sent: Wed, May 5, 2010 7:24:15 AM
Subject: [amsat-bb] Re: mmds downconverters for ao-51?
Wow, the famous 'cigar' antenna. At that price you can afford to play with
it.
73,
Joe kk0sd
-----Original Message-----
From: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx On
Behalf Of jfloyd@xx.xxxx.xxx
Sent: Tuesday, May 04, 2010 4:38 PM
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] mmds downconverters for ao-51?
Has anyone tried one of the itfs mmds downconverters like this
one on ebay:
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=110523087399&ssPageName=S
TRK:MEWNX:IT
for ao-51 s band downlink? 75 ohm out and looks cheesey but
less than $30 shipped. it's cheap enough for me to play so I
bought one to experiment with, maybe just to remove the
downconverter. I would welcome stories of your experience or
just advice.
Thanks
John, kn4ge
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------------------------------
Message: 14
Date: Wed, 5 May 2010 06:44:36 -0500
From: "Gary \"Joe\" Mayfield" <gary_mayfield@xxxxxxx.xxx>
Subject: [amsat-bb] Re: Field Day AO-51 configuration - another option
Cc: <amsat-bb@xxxxx.xxx>
Message-ID: <COL114-DS243DB5725C7DA7339789568AF40@xxx.xxx>
Content-Type: text/plain; charset="us-ascii"
..... Good Stuff Clipped ......
One option that hasn't been floated is trying a mode switch on the early
AM Sunday pass. We could go from L/U to V/U very easily. If we do this,
I'd like to work with Bruce and actually count the number of QSOs
reported per mode.
73, Drew KO4MA
That's a novel idea! I would support a mode change. They kept things
interesting on AO-13 during Field Day.
73,
Joe kk0sd
------------------------------
Message: 15
Date: Wed, 05 May 2010 08:29:57 -0400
From: davekn4ok@xxx.xxx
Subject: [amsat-bb] Re: mmds downconverters for ao-51?
To: kd0ar@xxxxxxxxx.xxxx amsat-bb@xxxxx.xxx
Message-ID: <8CCBA65CEADC36D-196C-A8B8@xxxxxxxxxxxx.xxxxxx.xxx.xxx>
Content-Type: text/plain; charset="us-ascii"
Where can we get one of those downconverters?
-----Original Message-----
From: Michael Heim, KD0AR <kd0ar@xxxxxxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Sent: Wed, May 5, 2010 6:36 am
Subject: [amsat-bb] Re: mmds downconverters for ao-51?
You will be astounded with the signal you will get from one of these
ownconverters. I used this modification:
ttp://www.rvhfg.org/articles/k0sm/basic%20mods.php
________________________________
ichael Heim
hief Engineer, Forever Broadcasting
ew Castle PA
KST WJST WWGY
14-671-0666
ontract Engineer
ell: 330-502-6379
RS KD0AR
________________________________
________________________________
rom: "Gary "Joe" Mayfield" <gary_mayfield@xxxxxxx.xxx>
o: amsat-bb@xxxxx.xxx
ent: Wed, May 5, 2010 7:24:15 AM
ubject: [amsat-bb] Re: mmds downconverters for ao-51?
Wow, the famous 'cigar' antenna. At that price you can afford to play with
t.
73,
oe kk0sd
-----Original Message-----
rom: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx On
ehalf Of jfloyd@xx.xxxx.xxx
ent: Tuesday, May 04, 2010 4:38 PM
o: amsat-bb@xxxxx.xxx
ubject: [amsat-bb] mmds downconverters for ao-51?
Has anyone tried one of the itfs mmds downconverters like this
ne on ebay:
ttp://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=110523087399&ssPageName=S
RK:MEWNX:IT
for ao-51 s band downlink? 75 ohm out and looks cheesey but
ess than $30 shipped. it's cheap enough for me to play so I
ought one to experiment with, maybe just to remove the
ownconverter. I would welcome stories of your experience or
ust advice.
hanks
ohn, kn4ge
______________________________________________
ent via AMSAT-BB@xxxxx.xxx. Opinions expressed are those of the author.
ot an AMSAT-NA member? Join now to support the amateur satellite program!
ubscription settings: http://amsat.org/mailman/listinfo/amsat-bb
_______________________________________________
ent via AMSAT-BB@xxxxx.xxx. Opinions expressed are those of the author.
ot an AMSAT-NA member? Join now to support the amateur satellite program!
ubscription settings: http://amsat.org/mailman/listinfo/amsat-bb
______________________________________________
ent via AMSAT-BB@xxxxx.xxx. Opinions expressed are those of the author.
ot an AMSAT-NA member? Join now to support the amateur satellite program!
ubscription settings: http://amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 16
Date: Wed, 5 May 2010 12:38:51 +0000 (UTC)
From: aflowers@xxxxxxxxxxx.xxx
Subject: [amsat-bb] Re: mmds downconverters for ao-51?
To: "Michael Heim, KD0AR" <kd0ar@xxxxxxxxx.xxx>
Cc: amsat-bb@xxxxx.xxx
Message-ID:
<769799070.67341.1273063131469.JavaMail.root@xxxxxxxxxxx.xxxx.xx.xxxxxxxxxxx.x
xx>
Content-Type: text/plain; charset=utf-8
I have one of these all-in-one units on my shelf here. The filter
construction is *not* identical to the Cal-amp models, but you can use the
same roadmap as in my article to figure out what is what. It will be a
little trickier to get to work reasonably at 2401. This is because the
input filter is a metal-ceramic (probably helical?) no-tune component that
is soldered and glued to the board. The frequency range 2300-2700 MHz
really depends on what it was designed for--some of the I understand some of
the Austrailian models work at 2401 right out of the box, but the one I have
(designed for MMDS service in the US) is probably 20-30dB down from its peak
around 2500 MHz. The front end filter appears to be the bottleneck. Like
other MMDS converters in the US, this one has a 2278MHz LO that gives you a
123 MHz IF for 2401.
Replacing that filter looks to be a bear, though it might be possible. If
anyone has figured out how to do this without destroying the thin PC board,
there would be many people interested. I imagine it would work acceptably
for AO-51 if you just bypassed the font-end filter, but if you have any PCS
stuff in the 2.1 GHz range you might have issues from the image frequency.
I did that for my first S-band contacts with a Pacific Monolithics MMDS
converter, using a horn antenna fashioned out of a large soup can it it
worked fine from downtown Rochester, NY.
Andy K0SM/2
----- Original Message -----
From: "Michael Heim, KD0AR" <kd0ar@xxxxxxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Sent: Wednesday, May 5, 2010 7:36:51 AM
Subject: [amsat-bb] Re: mmds downconverters for ao-51?
You will be astounded with the signal you will get from one of these
downconverters. I used this modification:
http://www.rvhfg.org/articles/k0sm/basic%20mods.php
________________________________
Michael Heim
Chief Engineer, Forever Broadcasting
New Castle PA
WKST WJST WWGY
814-671-0666
Contract Engineer
Cell: 330-502-6379
ARS KD0AR
________________________________
________________________________
From: "Gary "Joe" Mayfield" <gary_mayfield@xxxxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Sent: Wed, May 5, 2010 7:24:15 AM
Subject: [amsat-bb] Re: mmds downconverters for ao-51?
Wow, the famous 'cigar' antenna. At that price you can afford to play with
it.
73,
Joe kk0sd
-----Original Message-----
From: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx On
Behalf Of jfloyd@xx.xxxx.xxx
Sent: Tuesday, May 04, 2010 4:38 PM
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] mmds downconverters for ao-51?
Has anyone tried one of the itfs mmds downconverters like this
one on ebay:
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=110523087399&ssPageName=S
TRK:MEWNX:IT
for ao-51 s band downlink? 75 ohm out and looks cheesey but
less than $30 shipped. it's cheap enough for me to play so I
bought one to experiment with, maybe just to remove the
downconverter. I would welcome stories of your experience or
just advice.
Thanks
John, kn4ge
_______________________________________________
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
_______________________________________________
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 member? Join now to support the amateur satellite program!
http://amsat.org/mailman/listinfo/amsat-bb
End of AMSAT-BB Digest, Vol 5, Issue 204
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