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CX2SA > SATDIG 27.11.08 01:38l 464 Lines 13400 Bytes #999 (0) @ WW
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To : SATDIG@WW
Today's Topics:
1. Re: AO-51 not heard Orbit # 23,180 (Bryan Green)
2. Re: AO-51 not heard Orbit # 23,180 (Bryan Green)
3. Re: MMIC for LEO preamp? (Jim Sanford)
4. AO-51 (TERRY BROMLEY)
5. Re: BBsat Call for ideas (Bruce Robertson)
6. Re: AO-51 not heard Orbit # 23,180 (nader omer)
7. I: AO-51 (Francesco Grappi)
8. Re: BBsat Call for ideas (cathrynham)
9. Re: AO-51 not heard Orbit # 23,180 (Gould Smith)
10. Re: MMIC for LEO preamp? (Nigel Gunn G8IFF/W8IFF)
11. Re: MMIC for LEO preamp? (Scott Richardson)
12. Re: soundcard modems for pactorIII (George Henry)
13. AO-51 not heard (Dale-KL7XJ)
14. Re: MMIC for LEO preamp? - DEM (Rod Adkins)
----------------------------------------------------------------------
Message: 1
Date: Wed, 26 Nov 2008 08:21:23 -0800
From: Bryan Green <bag@xxx.xxx>
Subject: [amsat-bb] Re: AO-51 not heard Orbit # 23,180
To: AMSAT-BB <amsat-bb@xxxxx.xxx>
Message-ID: <D8FE6A37-4F16-4B0F-9AC4-6A62ADB053CA@xxx.xxx>
Content-Type: text/plain; charset=US-ASCII; format=flowed; delsp=yes
On Nov 26, 2008, at 8:03 AM, nader omer wrote:
> AO-51 not heard over Africa Orbit # 23,180 15:25 - 15:38 UTC ?!
> other report that at http://oscar.dcarr.org/index.php
> I hope it's just a mild commom cold !
> 73 de Nader -st2nh
AO-51 not heard over the Pacific at 1557Z. Not sure how to calculate
the orbit number.
-- bag
------------------------------
Message: 2
Date: Wed, 26 Nov 2008 08:22:51 -0800
From: Bryan Green <bag@xxx.xxx>
Subject: [amsat-bb] Re: AO-51 not heard Orbit # 23,180
To: Rick - WA4NVM <wa4nvm@xxxxxxx.xxx>
Cc: st2nh@xxxxx.xxxx amsat-bb@xxxxx.xxx
Message-ID: <719E06BF-1512-466A-90DD-FC98EEFA46A5@xxx.xxx>
Content-Type: text/plain; charset=US-ASCII; format=flowed
On Nov 26, 2008, at 8:17 AM, Rick - WA4NVM wrote:
> Same here, didn't hear a thing on the 1420utc pass this morning.
> Maybe tied to the QRM we are having the last two days??
So it wasn't just me on the QRM!
Huh. I hope everything's OK on AO-51.
-- bag, kl7cn
------------------------------
Message: 3
Date: Wed, 26 Nov 2008 11:31:58 -0500
From: Jim Sanford <wb4gcs@xxxxx.xxx>
Subject: [amsat-bb] Re: MMIC for LEO preamp?
To: Curt Nixon <cptcurt@xxxxx.xxx>
Cc: amsat-bb@xxxxx.xxx
Message-ID: <492D79FE.1060902@xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
I have buile ONE demi preamp -- 2.4GHz as I recall. Well designed, OK
to put together (doable, but must be patient and careful -- probably
less of an issue at 2m).
Performs very well.
You could do worse than a demi kit.
73,
Jim
wb4gcs@xxxxx.xxx
Curt Nixon wrote:
> SO...now I have made a few contacts on AO-51 and SO-50. Now I need to
> get better ears.
>
> I have a very simple mode J setup using a couple of old mobil rigs--the
> rx unit is an IC 2350H. 10 el cheap yagi through 60ft of LMR400.
>
> I'm considering options for a mast preamp for rx only. I'll be using a
> diplexer for desense ahead of it, and eventually add coaxial switching
> so I can use TX.
>
> I'll feed with power through extra wire in rotor cable.
>
> Looking at the Hamtonics, DEMI kit and a hombrew from scratch.
>
> 1. Any experiences with the DEMI units as kits?
>
> 2. with there relatively high NF, are the MMIC devices like the ERA
> series, at all appropriate for simple mast preamps for entry level
> application?
>
> Thanks to all.
>
> Curt
> KU8L
> _______________________________________________
> 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: Wed, 26 Nov 2008 16:51:29 -0000
From: "TERRY BROMLEY" <terry.bromley@xxxxxxxxxx.xxx>
Subject: [amsat-bb] AO-51
To: "AMSAT" <amsat-bb@xxxxx.xxx>
Message-ID: <1BCD9E53E5BA4F8888F507BB6FC60FD0@xxxxxxxxxxxxxx>
Content-Type: text/plain; charset="iso-8859-1"
I worked DC1KHB at 09:23 this morning 5/5 both ways.
Terry G1WPR.
------------------------------
Message: 5
Date: Wed, 26 Nov 2008 13:18:57 -0400
From: "Bruce Robertson" <ve9qrp@xxxxx.xxx>
Subject: [amsat-bb] Re: BBsat Call for ideas
To: "Greg D." <ko6th_greg@xxxxxxx.xxx>
Cc: amsat-bb@xxxxx.xxx
Message-ID:
<49657a760811260918p3357912dod3347e1e440f764e@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
Thanks to all for a fun and engaging thread.
One idea that hasn't been floated yet, but which I believe deserves
consideration, is a 10m or 15m transmitter aboard bbSat. Years before
actually being able to communicate through an amateur satellite, I
listened to the RS robots on 10m and 15m, and that achievement gave me
the confidence to proceed. I therefore think a transponder that
downlinked on these bands would be likely to 'broaden our base', and
it would help keep active these, now unused, satellite bands.
I recognize that transmitting on such a long wavelength from a 10cm
cube represents a technical challenge, but it would largely be a
challenge of mechanical engineering, not something that would run up
against the limited power budget. I also vaguely have the impression
that amplifiers, etc. are more efficient in the lower frequencies, so
that might be a plus. (Not to mention reduced path loss.) Perhaps the
effective power out would be so low that a directional antenna would
be required on the ground. In which case, I'd say it was a no-go,
since that would preclude too many of the new experimenters that we'd
be hoping to snare on these bands.
------------------------------
Message: 6
Date: Wed, 26 Nov 2008 09:22:49 -0800 (PST)
From: nader omer <st2nh@xxxxx.xxx>
Subject: [amsat-bb] Re: AO-51 not heard Orbit # 23,180
To: amsat-bb@xxxxx.xxx
Message-ID: <707648.15547.qm@xxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=iso-8859-1
Hi all
?
Again AO-51 on?QRT mode!?(both downlinks frquencies)
17:04 - 17 -16 UTC
at KK65GP
?
73, Nader ,ST2NH
WWW.ST2NH.COM
?
------------------------------
Message: 7
Date: Wed, 26 Nov 2008 18:23:11 +0100
From: "Francesco Grappi" <f.grappi@xxx.xx>
Subject: [amsat-bb] I: AO-51
To: <amsat-bb@xxxxx.xxx>
Message-ID: <D32A4F17DA68430291CE4D694CA2DA53@xxxxxx>
Content-Type: text/plain; charset="iso-8859-1"
Nothing heard this evening over Italy at 17:15 utc on
both transponders A and B
73" Frank IW4DVZ.
-----Messaggio originale-----
Da: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx Per conto
di
TERRY BROMLEY
Inviato: mercoled? 26 novembre 2008 17.51
A: AMSAT
Oggetto: [amsat-bb] AO-51
I worked DC1KHB at 09:23 this morning 5/5 both ways.
Terry G1WPR.
_______________________________________________
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: 8
Date: Wed, 26 Nov 2008 09:52:19 -0800
From: cathrynham <cathrynm@xxxxxxxxxxxx.xxx>
Subject: [amsat-bb] Re: BBsat Call for ideas
Cc: amsat-bb@xxxxx.xxx
Message-ID: <492D8CD3.6090607@xxxxxxxxxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
How about this.
1. On the satellite there's a 9600 FSK regenerating repeater.
If it hears a bit, it sends a bit without any other smarts.
2m up, 440 down.
2. Also there's a clock. It puts out a tick 8 times
per second.
3. For the ground stations, we design a simple
TDMA system. Each user gets a time slot for
transmitting into the satellite. Let me see, 9600
baud is 960 characters a second, so we break
that into 8 blocks of 100 character or so every second and
for up to 16 users for a 2 second time block. Enough
bytes to do a small ax25 packet, or maybe we just
stew up something new. Callsign + checksum + data.
3. Then we just make it a big chat room in the sky. The
thing flies over, you type on your computer and then
your software uses an unused time slot for
sending the data. Everyone can read your message,
and can chat back to you.
------------------------------
Message: 9
Date: Wed, 26 Nov 2008 13:35:34 -0500
From: "Gould Smith" <gouldsmi@xxxxxxxxx.xxx>
Subject: [amsat-bb] Re: AO-51 not heard Orbit # 23,180
To: <amsat-bb@xxxxx.xxx>
Message-ID: <27FD7B97E57E46D18FBE57A164534BF7@xxxxxxxxxxx>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
Thanks to everyone for the reports. I changed TXA to get telemetry this
morning and returned it to L/U repeater.
Things looked OK during the pass.
My next pass is 23:51Z I will check on the status then.
73,
Gould, WA4SXM
AO-51 command station
----- Original Message -----
From: "nader omer" <st2nh@xxxxx.xxx>
To: <amsat-bb@xxxxx.xxx>
Sent: Wednesday, November 26, 2008 11:03 AM
Subject: [amsat-bb] AO-51 not heard Orbit # 23,180
AO-51 not heard over Africa Orbit # 23,180 15:25 - 15:38 UTC ?!
other report that at http://oscar.dcarr.org/index.php
I hope it's just a mild commom cold !
73 de Nader -st2nh
_______________________________________________
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, 26 Nov 2008 19:02:56 +0000
From: Nigel Gunn G8IFF/W8IFF <nigel@xxxxx.xxx>
Subject: [amsat-bb] Re: MMIC for LEO preamp?
To: amsat-bb@xxxxx.xxx
Message-ID: <492D9D60.4040401@xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
What's a demi kit?
Jim Sanford wrote:
>
> You could do worse than a demi kit.
------------------------------
Message: 11
Date: Wed, 26 Nov 2008 14:14:59 -0500
From: "Scott Richardson" <scott@xxxxxxxxxxx.xxx>
Subject: [amsat-bb] Re: MMIC for LEO preamp?
To: <nigel@xxxxx.xxx>, <amsat-bb@xxxxx.xxx>
Message-ID: <E9518A4FA12342E09103DBA9B2FB6039@xxxxxxxxx>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
> What's a demi kit?
Downeast Microwave
N1AIA
------------------------------
Message: 12
Date: Wed, 26 Nov 2008 11:19:12 -0800 (PST)
From: George Henry <ka3hsw@xxx.xxx>
Subject: [amsat-bb] Re: soundcard modems for pactorIII
To: David - M0ZLB <m0zlb@xxxxxxxxxx.xxx>, Gordon JC Pearce MM3YEQ
<gordonjcp@xxxx.xxx>
Cc: AMSAT-BB <amsat-bb@xxxxx.xxx>
Message-ID: <627563.69208.qm@xxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=iso-8859-1
Perhaps you are unaware that, even after you purchase an SCS Pactor modem, you
must purchase a license to use the Pactor III protocol...??and trying to
circumvent the licensing requirement?is probably?illegal just about anywhere
in the world, not just in the U.S.??
You *have* heard of intellectual property rights, haven't you?
----- Original Message ----
> From: David - M0ZLB <m0zlb@xxxxxxxxxx.xxx>
> To: Gordon JC Pearce MM3YEQ <gordonjcp@xxxx.xxx>
> Cc: AMSAT-BB <amsat-bb@xxxxx.xxx>
> Sent: Wednesday, November 26, 2008 6:28:24 AM
> Subject: [amsat-bb] Re: soundcard modems for pactorIII
>
> Developing one for personal use as an individual or between friends
> without commercial gain would be ok!
>
> David
> KG4ZLB/M0ZLB
> www.kg4zlb.com
>
>
>
> Gordon JC Pearce MM3YEQ wrote:
> > George Henry wrote:
> >?
> >
> > ... in the US.? Not in most of the rest of the world ;-)
> >
> > Gordon
------------------------------
Message: 13
Date: Wed, 26 Nov 2008 10:22:31 -0900
From: Dale-KL7XJ <daleh@xxxxxx.xxx>
Subject: [amsat-bb] AO-51 not heard
To: amsat-bbs <amsat-bb@xxxxx.xxx>
Message-ID: <492DA1F7.3060508@xxxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
AO-51 not heard on the last two passes. Orbit 20,181 and 20,182 which
is about to leave Alaska footprint. I tried both L/U and V/U.
Both were on yesterday.
Dale
KL7XJ
------------------------------
Message: 14
Date: Wed, 26 Nov 2008 11:23:05 -0800
From: "Rod Adkins" <adkins92rod@xxxxxxxxx.xxx>
Subject: [amsat-bb] Re: MMIC for LEO preamp? - DEM
To: "Nigel Gunn G8IFF/W8IFF" <nigel@xxxxx.xxx>, amsat-bb@xxxxx.xxx
Message-ID: <380-220081132619235140@xxxxxxxxx.xxx>
Content-Type: text/plain; charset=US-ASCII
Down East Microwave
www.downeastmicrowave.com
I have bought, & been fully satisfied with, both kits & fully built
pre-amps from 220 to 2304
They go out of their way to be helpful in supplying components also
Rod Adkins WI6M nr San Diego
17917 Lyons Valley Road
Jamul, CA 91935
> [Original Message]
> From: Nigel Gunn G8IFF/W8IFF <nigel@xxxxx.xxx>
> To: <amsat-bb@xxxxx.xxx>
> Date: 11/26/2008 1:03:03 PM
> Subject: [amsat-bb] Re: MMIC for LEO preamp?
>
> What's a demi kit?
>
> Jim Sanford wrote:
>
> >
> > You could do worse than a demi kit.
> _______________________________________________
> 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 3, Issue 613
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