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CX2SA > SATDIG 10.02.10 21:12l 850 Lines 28765 Bytes #999 (0) @ WW
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Today's Topics:
1. Re: Good Night, Loran (Edward Cole)
2. Recording downlink audio... (Elan Portnoy)
3. Re: New Lindy's QRV (Edward Cole)
4. Down East Microwave 2355LYK 1.2GHz 55 elements loop antenna
(Juan Antonio Fernandez)
5. Re: John's take on AO-51 (Robert Smith)
6. Re: Good Night, Loran (Daniel Kekez)
7. Re: New Lindy's QRV (Joel Black)
8. Good Night, Loran (Howie DeFelice)
9. Re: AO-51 Signal Strength Post Flip (Auke de Jong, VE6PWN)
10. Re: New Lindy's QRV (Greg D.)
11. Re: Good Night, Loran (Dave Guimont)
12. Re: Good Night, Loran (Art McBride)
13. Re: FT-847 - relating dbm to S units (Phil)
14. Re: Down East Microwave 2355LYK 1.2GHz 55 elements
loopantenna (n1jez@xxxxxxxxxxxxxxxxx.xxxx
15. Office Closed (Martha)
16. Re: AO-51 Signal Strength Post Flip (B J)
17. Anybody use a Soft66ADD SDR? (Mark L. Hammond)
18. HO-68 Telemetry 10-02-2010 18:45 UTC (PE0SAT)
----------------------------------------------------------------------
Message: 1
Date: Tue, 09 Feb 2010 11:04:45 -0900
From: Edward Cole <kl7uw@xxxxxxxxx.xxx>
Subject: [amsat-bb] Re: Good Night, Loran
To: amsat-bb@xxxxx.xxx
Message-ID: <201002092004.o19K4jb0029532@xxxxxxx.xxxxxxxxx.xxx>
Content-Type: text/plain; charset="us-ascii"; format=flowed
I do not know the exact answer, but the Iridium satellites
(constellation of 256?) each were supposed to cost $5M/each.
But any of you who actually have used Loran-C, know that is a far cry
from the accuracy or reliability (due to LF propagation) as GPS.
Ed
PS: I used to install them, but you could not repair them as mfr's
would not release proprietary info. But then these days no one
bothers to repair electronics (putting us component level tech's out
to pasture - moo!).
At 06:52 AM 2/9/2010, tosca005@xxx.xxx wrote:
>Does the US government NOT have any plans to launch any more GPS satellites?
>
>Does the existing array of satellites in orbit have any which are not in
>active use, i.e. reserved for future use as backups? As I recall, each
>satellite has two different atomic standards on board, one is on and the
>other is off (or is it 3 independent standards, one rubidium and two of
>something else?). So, how many spare atomic standards on functional
>satellites do we have to keep the aging fleet going?
>
>What is the cost of a GPS satellite launch vs. the cost savings of killing
>off Loran-C?
>
>Sorry if your comments triggered more questions than answers from me...
>
>73 de W0JT
>
>On Feb 9 2010, w6zkh@xxxxxxx.xxx wrote:
>
> > In our aging fleet of GPS Satellites, which are on the brink of dying,
> > and no replacements in sight, wonder what will happen then??
> >...
> >John W6ZKH
> >
> >
> >----- Original Message -----
> >From: "Clint BRADFORD" <clintbradford@xxx.xxx>
> >To: amsat-bb@xxxxx.xxx
> >Sent: Tuesday, February 9, 2010 3:36:58 AM GMT -08:00 US/Canada Pacific
> >Subject: [amsat-bb] Good Night, Loran
> >
> > In a series of small ceremonies, the U.S. Coast Guard on Monday shut down
> > Loran-C, a navigation and timing system that has guided mariners and
> > aviators since World War II.
>...
> >
> >Clint Bradford, K6LCS
>
>_______________________________________________
>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
73, Ed - KL7UW, WD2XSH/45
======================================
BP40IQ 500 KHz - 10-GHz www.kl7uw.com
500-KHz/CW, 144-MHz EME, 1296-MHz EME
DUBUS Magazine USA Rep dubususa@xxxxxxx.xxx
======================================
------------------------------
Message: 2
Date: Tue, 9 Feb 2010 12:19:11 -0800 (PST)
From: Elan Portnoy <elanportnoy@xxxxx.xxx>
Subject: [amsat-bb] Recording downlink audio...
To: amsat-bb@xxxxx.xxx
Message-ID: <531105.41171.qm@xxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=us-ascii
Also, would like to thank John for recording and posting downlink audio
files. They're not only useful in evaluating signal quality, they're fun to
listen to when I can't be in the shack!
Funny to hear myself mangle the call of the last station--still
half-asleep--hi hi.
Didn't hear you at all John, but had less than 1 deg left in the pass.
Just read the explanation of our observations--makes perfect sense and
again, thanks to those of you keeping the old girl kickin'
Elan
------------------------------
Message: 3
Date: Tue, 09 Feb 2010 11:25:10 -0900
From: Edward Cole <kl7uw@xxxxxxxxx.xxx>
Subject: [amsat-bb] Re: New Lindy's QRV
To: <amsat-bb@xxxxx.xxx>
Message-ID: <201002092025.o19KPAPG010369@xxxxxxx.xxxxxxxxx.xxx>
Content-Type: text/plain; charset="us-ascii"; format=flowed
One more update:
I tried pass #744, this morning and copied a big round-table of
several west-coast stations, but was unable to break in. My downlink
was as loud as them, so...? I had one call to my CQ right at LOS and
could not complete, sorry! Bear with me as I am getting reaquainted
with running my radio on satellites ;-) My sub-VFO tuning control is
not working which complicates netting with another station. So I
find my signal with the Rx and then engage tracking. That tracks for
a little while.
The interesting thing is that I copied signals to zero-elevation. I
would say that I am pleased with the new antennas.
Question: what ERP are most stations using on SSB on HO-68? I am
running 50w ERP.
73, Ed - KL7UW, WD2XSH/45
======================================
BP40IQ 500 KHz - 10-GHz www.kl7uw.com
500-KHz/CW, 144-MHz EME, 1296-MHz EME
DUBUS Magazine USA Rep dubususa@xxxxxxx.xxx
======================================
------------------------------
Message: 4
Date: Tue, 9 Feb 2010 22:36:15 +0100
From: Juan Antonio Fernandez <ea4cyq@xxxxx.xxx>
Subject: [amsat-bb] Down East Microwave 2355LYK 1.2GHz 55 elements
loop antenna
To: amsat-bb@xxxxx.xxx
Message-ID:
<3d8902d41002091336g12ff179br88669cb8985b427e@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
Have anyboy worked with this 55 elements loop antena for 1.2 GHz.
What about its mechanical and electric features?
Juan Antonio
EA4CYQ
------------------------------
Message: 5
Date: Tue, 9 Feb 2010 11:39:16 -1000
From: "Robert Smith" <dukenuke@xxxx.xxx>
Subject: [amsat-bb] Re: John's take on AO-51
To: "Amsat-Bb@xxxxx. Org" <amsat-bb@xxxxx.xxx>
Message-ID: <362181028EB8469CBE41D7B6BE15DB9C@xxxxxx>
Content-Type: text/plain; charset="iso-8859-1"
Aloha All
In general, Hawaii is a very quiet place.
Most passes of AO-51 fly by with no usage.
Accordingly, signal strength and quality are
usually quite discernable (assuming no
anomalous QRM) when QSOs do occur.
The initial reorientation of AO-51 was very
apparent here. In general, the bird
appeared to have less signal strength and
more fades. It was, SO-50 like.
Since reorientation, it is my impression that
the signal strength has improved significantly
but there remain some fades; especially at
lower elevations.
In discussions with KG6NUB and others,
the feeling is that the bird is still in some
kind of "recovery mode." To me, "51"
now seems like its old "self." Fades are
becoming less prevalent.
Finally, my knowledge regarding orientation,
reliability and stability of OSCAR satellites
is extremely limited. The concept of
"recovery" may not even be applicable.
Perhaps the AO-51 team can
shed some light on the results of the overall
experiment.
73 and Aloha to all.
Respectfully,
robert NH7WN, Honolulu
------------------------------
Message: 6
Date: Tue, 09 Feb 2010 17:03:01 -0500
From: Daniel Kekez <va3kkz@xxxxx.xxx>
Subject: [amsat-bb] Re: Good Night, Loran
To: amsat-bb@xxxxx.xxx
Message-ID: <4B71DB95.2020101@xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
On 2010-02-09 10:52 , tosca005@xxx.xxx wrote:
> Does the US government NOT have any plans to launch any more GPS satellites?
There will be more but of somewhat different design with better
capabilities for terrestrial use. (Although potentially worse signals
*above* the constellation, which is a concern for GPS receivers on HEO
missions. I recall a presentation at the 2004 AMSAT Symposium on this.
I'm not if this has changed.)
The last of the Block IIR-M satellites (8) were added to the
constellation between 2005 and 2009. Those launched on Delta II vehicles.
There will be twelve follow-on satellites, known as the Block IIF
series, and the first is planned to launch this year. They are being
developed by Boeing and will launch on the Delta IV.
After that series, there will be more designated Block III with more
advanced capabilities, although a contractor won't be selected until
next year for these.
See http://en.wikipedia.org/wiki/GPS_satellite
and http://en.wikipedia.org/wiki/GPS_modernization
for good introductions.
73,
-Daniel, VA3KKZ
------------------------------
Message: 7
Date: Tue, 9 Feb 2010 16:35:23 -0600
From: Joel Black <jbblack68@xxxxx.xxx>
Subject: [amsat-bb] Re: New Lindy's QRV
To: AMSAT BB <amsat-bb@xxxxx.xxx>
Message-ID:
<73583d7a1002091435q5f0e802cpdee48c7ac90226bd@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
Yes, I agree with that, Clint. I have been looking at Jerry Brown's, K5OE,
archived pages available here:
http://web.archive.org/web/20000824013151/http://members.aol.com/k5oe/
After looking at it, I think I like the radiation patterns of the TPM II's
better than any other LEO antenna I've seen thus far. There may be better
out there that I have not seen. I have worked Jerry several times with him
using those antennas.
I don't have a problem with large arrays where I live, but they're just
overkill IMHO. I only have one large tree to the SW and with the beamwidth
of 22 elements on VHF and 44 on UHF, my rotor is constantly working.
73,
Joel, W4JBB
On Mon, Feb 8, 2010 at 10:45 PM, Clint Bradford <clintbradford@xxx.xxx>wrote:
> >> ... Does it -matter- if he uses a preamp on FM, SSB, or freaking two
> cans and a string?
>
> Absolutely not. It has just been my "mantra" the past four years advising
> folks that you do not need 100 Watts of TX power, expensive Yagis on the
> roof, and a rotator under computer control to get into working the FM
> satellites.
>
> Now, then, if I lived in Drew's neighborhood, all that equipment sounds
> pretty appealing ... working the birds while adding fire to the fireplace
> with a hot toddy (or three) at hand.
>
> Clint, K6LCS
> _______________________________________________
> 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
>
--
Joel Black
jbblack(at)charter.net
------------------------------
Message: 8
Date: Tue, 9 Feb 2010 18:03:05 -0500
From: Howie DeFelice <howied231@xxxxxxx.xxx>
Subject: [amsat-bb] Good Night, Loran
To: <amsat-bb@xxxxx.xxx>
Message-ID: <BAY142-W192ADC1DDBA8856576E1BEE7500@xxx.xxx>
Content-Type: text/plain; charset="iso-8859-1"
Minor clarification, Loran-A was used from WW-2 until it was turned off in
the 1980's I believe. The current system, Loran-C was in commercial use
starting in the late 70's. When Loran-C was used for returning to a
previously stored waypoint, it's accuracy was almost as good as current GPS
and better than the early "dithered" commercial GPS service.
Howie
AB2S
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------------------------------
Message: 9
Date: Tue, 9 Feb 2010 21:42:25 -0700
From: "Auke de Jong, VE6PWN" <sparkycivic@xxxx.xx>
Subject: [amsat-bb] Re: AO-51 Signal Strength Post Flip
To: <amsat-bb@xxxxx.xxx>
Message-ID: <028e01caaa0b$7188e6c0$6500a8c0@xxxxxxx>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
Another observation from DO33 (yo Bernhardt), I've always had trouble
hearing this bird well enough to work from my home station, as I have my
antennas at fixed elevation, and manually-rotated via channelmaster... AO-51
has been consistently easier to hear AFTER it has passed overhead on
ascending passes. Between AOS and peak-elevation, it's always just above my
noise. I don't have any observations about descending passes because I'm
not up early enough to try those;) . I also can't say how that compares
to pre-flip, as I never heard it well enough to work, except on very low
passes, and didn't keep notes.
I actually had the bird all to myself a few weeks ago, while everyone
from the USA already had LOS, and I had almost full-quieting for many
minutes in a row that time, until my LOS. This is what struck me as being a
significant observation!
I hope this helps,
73's
Auke
----- Original Message -----
From: "John Papay" <john@xxxxxx.xxx>
To: <amsat-bb@xxxxx.xxx>
Sent: Tuesday, February 09, 2010 8:47 AM
Subject: [amsat-bb] AO-51 Signal Strength Post Flip
> It has been about a month now since AO-51 was commanded back to
> its normal orientation. But many are reporting that they are having more
> trouble hearing it now than they did before the first re-orientation.
>
> It does seem to me that some stations that usually hear very well are not
> hearing that well now. This morning's pass (9Feb2010 1045z) of AO-51
> seemed to bear that out. AF6RF, KB1RVT, KE3LB, WD0X?, KJ4CBC,
> K5QXJ, WB2IOL and YF6BFE were on the pass and with a few
> exceptions, all were not able to hear at some point during the pass.
> There are also a few noisy uplink transmissions as well.
>
> The recording can be downloaded at:
> http://www.papays.com/AO-51_09Feb2010_104452za.mp3
> (there are no signals in the first minute of the recording)
>
> Is anyone else having trouble hearing AO-51 as well as they heard it
> before
> the flip experiment?
>
> 73,
> John K8YSE
>
> _______________________________________________
> 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: 10
Date: Tue, 9 Feb 2010 21:03:34 -0800
From: "Greg D." <ko6th_greg@xxxxxxx.xxx>
Subject: [amsat-bb] Re: New Lindy's QRV
To: <kl7uw@xxxxxxxxx.xxx>, <amsat-bb@xxxxx.xxx>
Message-ID: <BLU133-W15F3286A8DB6C639C514B9A94F0@xxx.xxx>
Content-Type: text/plain; charset="iso-8859-1"
Hi Ed,
Regarding power used:
I was running 25w (minus a few dB of coax losses) into an 8 element beam
(vertically polarized), and getting an S5 return on a 2x15 circular beam,
with a mediocre preamp. I forget if it was RHCP or LHCP on the downlink at
the time.
I don't have a power meter, but I could turn my 736R's Drive control about
3/4 of the way down before my signal got hard to hear. Maybe 5w or so?
This was when the bird was about 10-12 degrees up, in a direction that has
about a 5 degree usable horizon (there's a hill in that direction).
Hope that helps,
Greg KO6TH
> Date: Tue, 9 Feb 2010 11:25:10 -0900
> To: amsat-bb@xxxxx.xxx
> From: kl7uw@xxxxxxxxx.xxx
> Subject: [amsat-bb] Re: New Lindy's QRV
>
> One more update:
>
> I tried pass #744, this morning and copied a big round-table of
> several west-coast stations, but was unable to break in. My downlink
> was as loud as them, so...? I had one call to my CQ right at LOS and
> could not complete, sorry! Bear with me as I am getting reaquainted
> with running my radio on satellites ;-) My sub-VFO tuning control is
> not working which complicates netting with another station. So I
> find my signal with the Rx and then engage tracking. That tracks for
> a little while.
>
> The interesting thing is that I copied signals to zero-elevation. I
> would say that I am pleased with the new antennas.
>
> Question: what ERP are most stations using on SSB on HO-68? I am
> running 50w ERP.
>
>
>
> 73, Ed - KL7UW, WD2XSH/45
> ======================================
> BP40IQ 500 KHz - 10-GHz www.kl7uw.com
> 500-KHz/CW, 144-MHz EME, 1296-MHz EME
> DUBUS Magazine USA Rep dubususa@xxxxxxx.xxx
> ======================================
>
> _______________________________________________
> 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: 11
Date: Tue, 09 Feb 2010 21:44:19 -0800
From: Dave Guimont <dguimon1@xxx.xx.xxx>
Subject: [amsat-bb] Re: Good Night, Loran
To: Howie DeFelice <howied231@xxxxxxx.xxx>
Cc: amsat-bb@xxxxx.xxx
Message-ID: <ED.CD.02874.9B7427B4@xxxxxxxxxxxxx.xxxx.xx.xxx>
Content-Type: text/plain; charset="us-ascii"; format=flowed
>Minor clarification, Loran-A was used from WW-2 until it was turned
>off in the 1980's I believe. The current system, Loran-C was in
>commercial use starting in the late 70's. When Loran-C was used for
>returning to a previously stored waypoint, it's accuracy was almost
>as good as current GPS and better than the early "dithered"
>commercial GPS service.
Loran is all we had WWII and on,.... with radio silence and an
overcast to prevent celestial nav it was pretty hard to find the
carrier without it!!!
73, Dave, WB6LLO
dguimon1@xxx.xx.xxx
Disagree: I learn....
Pulling for P3E...
------------------------------
Message: 12
Date: Tue, 9 Feb 2010 22:02:42 -0800
From: "Art McBride" <kc6uqh@xxx.xxx>
Subject: [amsat-bb] Re: Good Night, Loran
To: "'Howie DeFelice'" <howied231@xxxxxxx.xxx>, <amsat-bb@xxxxx.xxx>
Message-ID: <9F9D38791105408FA31019CE844623B0@xxxxxx>
Content-Type: text/plain; charset="us-ascii"
Loran C was only accurate near the US Coast Guard stations that provided the
corrections to each chain. The Correction stations were located where the
lines of position crossed at near right angles. If you were near the end of
the chain the errors could be in excess of 1/2 NM
The use of differential Loran was popular before differential GPS which
dialed out selective availability just as Loran corrections did for Loran
errors. Loran was always an area navigation system. Good as it was in the
center of its coverage it still only provided coastal navigation. GPS as it
states is a global system you can use it anywhere in the World with good
accuracy. Both of these systems were very good replacements for
non-directional beacons in the 200KHz to 400KHz range that required Radio
Direction Finding technology.
In the 50's and 60's Fishing Vessels sailing out of Southern California
could find the fishing grounds off of Guadalupe Island by using aircraft
charts and Loran A signals 1H4 from San Pedro and 3H3 out of Galveston Texas
on a Sky wave. Position was relative but got the fleet to the same place.
Art,
KC6UQH
-----Original Message-----
From: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx On
Behalf Of Howie DeFelice
Sent: Tuesday, February 09, 2010 3:03 PM
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Good Night, Loran
Minor clarification, Loran-A was used from WW-2 until it was turned off in
the 1980's I believe. The current system, Loran-C was in commercial use
starting in the late 70's. When Loran-C was used for returning to a
previously stored waypoint, it's accuracy was almost as good as current GPS
and better than the early "dithered" commercial GPS service.
Howie
AB2S
_________________________________________________________________
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_______________________________________________
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: 13
Date: Tue, 9 Feb 2010 13:43:26 +1000
From: Phil <phillor@xxxxxxx.xxx>
Subject: [amsat-bb] Re: FT-847 - relating dbm to S units
To: amsat-bb@xxxxx.xxx
Message-ID: <201002091343.26637.phillor@xxxxxxx.xxx>
Content-Type: Text/Plain; charset="iso-8859-1"
On Mon, 8 Feb 2010 04:11:55 pm Edward Cole wrote:
<cut>
Thank you Ed and David for your detailed replies.
I knew that the S meter under read but I was unsure of by how much.
A beacon or a repeater would make a good signal source. Unfortunately, the
nearest UHF repeater is around 1000 Km from here and I'm unaware of any
receivable beacons. Instead I have to rely on the third harmonic from an old
hand-held radio.
Anyway, I have determined that there is nothing wrong with my aerial so I'd
better stop procrastinating and get something organised again.
--
Regards,
Phil
------------------------------
Message: 14
Date: Wed, 10 Feb 2010 06:57:30 -0500
From: <n1jez@xxxxxxxxxxxxxxxxx.xxx>
Subject: [amsat-bb] Re: Down East Microwave 2355LYK 1.2GHz 55 elements
loopantenna
To: "Juan Antonio Fernandez" <ea4cyq@xxxxx.xxx>, <amsat-bb@xxxxx.xxx>
Message-ID: <635FD4D4427340589EB4EF5FF7BA842A@xxxx>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
I'm using a 2455LY for satellite (1269 MHz) work. (1240 -1285 MHz) The 2355
is for terrestrial at 1296 MHz. Feeding it with a DL2AM 80 watts amp via
7/8" hardline. It's been on the tower for years. Working great. I mounted it
with the loops down to minimize any damage to the loops. I did use a bit of
PermaTex 65A windshield sealer around the rigid coax where it feeds through
the boom to keep water out of there. (done on all my loopers)
73,
Mike, N1JEZ
AMSAT 29649
"A closed mouth gathers no feet"
----- Original Message -----
From: "Juan Antonio Fernandez" <ea4cyq@xxxxx.xxx>
Subject: [amsat-bb] Down East Microwave 2355LYK 1.2GHz 55 elements
loopantenna
> Have anyboy worked with this 55 elements loop antena for 1.2 GHz.
>
> What about its mechanical and electric features?
>
> Juan Antonio
> EA4CYQ
------------------------------
Message: 15
Date: Wed, 10 Feb 2010 08:26:52 -0500
From: Martha <martha@xxxxx.xxx>
Subject: [amsat-bb] Office Closed
To: AMSAT BB <amsat-bb@xxxxx.xxx>, Board of Directors <bod@xxxxx.xxx>,
senior-officers <senior-officers@xxxxx.xxx>
Message-ID:
<956751cf1002100526q716a1620wd6edd9efdf1bff97@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
Due to blizzard conditions today, the AMSAT office is closed.
--
73- Martha
------------------------------
Message: 16
Date: Wed, 10 Feb 2010 07:59:09 -0800 (PST)
From: B J <top_gun_canada@xxxxx.xxx>
Subject: [amsat-bb] Re: AO-51 Signal Strength Post Flip
To: VE6PWNAuke de Jong <sparkycivic@xxxx.xx>
Cc: amsat-bb@xxxxx.xxx
Message-ID: <487779.58748.qm@xxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=us-ascii
--- On Tue, 2/9/10, Auke de Jong, VE6PWN <sparkycivic@xxxx.xx> wrote:
> From: Auke de Jong, VE6PWN <sparkycivic@xxxx.xx>
> Subject: [amsat-bb] Re: AO-51 Signal Strength Post Flip
> To: amsat-bb@xxxxx.xxx
> Received: Tuesday, February 9, 2010, 9:42 PM
> Another observation
> from DO33 (yo Bernhardt),
Greetings. It's nice to hear from a fellow Edmontonian.
I've always had trouble
> hearing this bird well enough to work from my home station,
> as I have my
> antennas at fixed elevation, and manually-rotated via
> channelmaster... AO-51
> has been consistently easier to hear AFTER it has passed
> overhead on
> ascending passes. Between AOS and peak-elevation,
> it's always just above my
> noise. I don't have any observations about descending
> passes because I'm
> not up early enough to try those;) . I
> also can't say how that compares
> to pre-flip, as I never heard it well enough to work,
> except on very low
> passes, and didn't keep notes.
I live beside one of the biggest shopping centres in the city and I've got
no obstructions from due N to nearly due NW for lower elevation passes. At
much higher angles, I can follow it from nearly directly overhead to SSW.
In the past, I could tell when AO-51 was within view because the background
noise would drop significantly. Since I'm operating a portable station, I
use that to track it. Lately, it hasn't been as easy.
> I actually had the bird all to myself a few
> weeks ago, while everyone
> from the USA already had LOS, and I had almost
> full-quieting for many
> minutes in a row that time, until my LOS. This is
> what struck me as being a
> significant observation!
I've noticed that it's been rather quiet during later morning passes (say,
after 1500 UTC).
<snip>
BTW, were you at the flea market at the Yellowhead Inn this past Saturday?
I've been to each one since I got my callsign 5 years ago and I'm sure that
this one had the most people. I was looking for a manual HF + 6 m tuner but
couldn't fine one, but there were lots of other items that I bought that I
could use.
It was a good opportunity to meet hams in person that I'd spoken to by
radio, including some from local nets. It was certainly a good way to spend
two hours.
__________________________________________________________________
Connect with friends from any web browser - no download required. Try the
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------------------------------
Message: 17
Date: Wed, 10 Feb 2010 13:35:19 -0500
From: "Mark L. Hammond" <marklhammond@xxxxx.xxx>
Subject: [amsat-bb] Anybody use a Soft66ADD SDR?
To: Amsat - BBs <amsat-bb@xxxxx.xxx>
Message-ID:
<5d8cecfe1002101035x35f07d7dpc047e54cf120a4aa@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
Found this today, look interesting. Prices are quite reasonable (if
not cheap). Performance is the question.. I suppose the quality of
the system sound card is a big issue.
Anybody here own one or seen one in use?
How about piping a 10.7 MHz IF into it for VHF/UHF?
http://zao.jp/radio/soft66ad/
--
Mark L. Hammond [N8MH]
------------------------------
Message: 18
Date: Wed, 10 Feb 2010 20:04:00 +0100
From: "PE0SAT" <pe0sat@xxxxx.xx>
Subject: [amsat-bb] HO-68 Telemetry 10-02-2010 18:45 UTC
To: amsat-bb@xxxxx.xxx
Message-ID: <20100210190400.244E3230E5@xx.xxxxx.xx>
Content-Type: text/plain;charset=iso-8859-1
Decoded the following CW Telemetry from HO-68
BJ1SA XW XW AAA TTT AUE T6T ETT TTT TTT TTT TTT TTT TTT TTT TTT XW XW
BJ1SA XW XW AAA TTT AU4 ABE ETT TTT TTT TTT TTT TTT TTT TTT TTT XW XW
BJ1SA XW XW AAA TTT AU4 4VE ETT TTT TTT TTT TTT TTT TTT TTT TTT XW XW
BJ1SA XW XW AAA TTT AU4 TDE ETT TTT TTT TTT TTT TTT TTT TTT TTT XW XW
BJ1SA XW XW AAA TTT AU4 TBE ETT TTT TTT TTT TTT TTT TTT TTT TTT XW XW
BJ1SA XW XW AAA TTT AU4 T6E ETT TTT TTT TTT TTT TTT TTT TTT TTT XW XW
BJ1SA XW XW AAA TTT AU4 A6E ETT TTT TTT TTT TTT TTT TTT TTT TTT XW XW
BJ1SA XW XW AAA TTT AU4 4VE ETT TTT TTT TTT TTT TTT TTT TTT TTT XW XW
BJ1SA XW XW AAA TTT AU4 T6E ETT TTT TTT TTT TTT TTT TTT TTT TTT XW XW
BJ1SA XW XW AAA TTT AU4 AEE ETT TTT TTT TTT TTT TTT TTT TTT TTT XW XW
BJ1SA XW XW AAA TTT AU4 AAT ETT TTT TTT TTT TTT TTT TTT TTT TTT XW XW
BJ1SA XW XW AAA TTT AU4 AUT ETT TTT TTT TTT TTT TTT TTT TTT TTT XW XW
BJ1SA XW XW AAA TTT AU4 A4T ETT TTT TTT TTT TTT TTT TTT TTT TTT XW XW
BJ1SA XW XW AAA TTT AU4 TBE ETT TTT TTT TTT TTT TTT TTT TTT TTT XW XW
73 Jan PE0SAT
--
With regards PE0SAT
Internet web-page http://www.ham.vgnet.nl/
------------------------------
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