Hello
To all you AO-7 fans. We appear to have a sick bird. We should feel blessed in
having such a well performing satellite for several years, considering it is
older than some of it's users. The audio is distorted and cw sounds bad,
running absolute minimum power. Any thoughts or sugges
Does anyone know which mode AO-7 is currently in and is there a
Place to go and find that info on a website?
Randy - N2CUA
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Hey everyone,
Thirty-five years ago this Sunday (15 November), AO-7 reached orbit. The
following is from the AO-7 page on the AMSAT-NA Web site:
"AMSAT-OSCAR 7 was launched November 15, 1974 by a Delta 2310 launcher from
Vandenberg Air Force Base, Lompoc, California. AO-7 was launched piggyback
Still seem to be off frequency ,tried using RIT to tune but no luck.
Have the following listed:
AO-7,145950,432150,USB,LSB,rev,0,0,modeB
any help would be appreciated.
Thanks for any helpJack WA1ZDV
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To whom it may concern,
I no longer edit the AO-7 Resource Page.
73 John.
...
> Subject: AO-7 Logbook Website Contact - AO-7 Info For Site
> To: em...@planetemily
Hello
Check out the log for AO-7 http://www.planetemily.com/ao7/ao7log.php you will
notice how much activity it gets from our European friends, as compared with
the U.S. From many parts of the U.S some good DX can be had. Even from way
over here in Seattle I can work a "piece" of Europe.
The AO-7 pass just concluded here reached maximum elevation of 31 degrees
to the wesf of my QTH (DM41lu), and the satellite was in Mode V/A (also
called Mode A). With about 100 watts EIRP my downlink signal was RST 589 but I
had the passband to myself. Nothing but me and the beacon, which was
I had a nice Mode A QSO with Brent, VA5MS, on the 1407-1427 pass this
morning. Also heard KC9ELU but the bird was a bit far to the west for him.
AO-7 will be in Mode A for most of SKN, so get those 10-meter antennas ready!
CU then,
Ray W2RS
___
The Eclipse Cycle has begun for satellite Ao-7.
Typically what this means is that the satellite will lose all power and
by default go into "Start-Up" mode every time it comes back into the
sunlight. Typically Mode B or C are the 1st mode of operations and the
loss of sunlight prevents mode swi
What mode is AO 7 in today?
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At 2231Z AO-7 downlink quit. In full sun, any ideas?
73 Bob W7LRD
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Down here in Australia at times we have experienced it were AO-7 would change
modes mid pass during a non eclipse period. This was not due to to many
stations but just the 24 hour time kicking in. You could follow the 24 hour
period on http://oscar.dcarr.org.
We use to take betts on who would b
To my friends on AO7
I will be conspicuous by my absence. My 70cm radio is sick and therefore off
to the radio doctor. The repair is out of my pay grade. I may try some HF,
remember that!
73 Bob W7LRD
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Hello All,
It looks like AO-7 has started another eclipse season. Does anyone know
when it goes back to full sunlight? Or better yet, point me towards
software that will let me find out. The charts on Emily's log are now
out of date.
73 de David VK5DG
Hello
Has anyone else noticed distorted audio from AO-7. This last pass there was
only Larry-WA6DIR and me on both his and my downlink was almost
uninteligible. Tried lowest power and Larry tried switching polarity. Any
thoughts. This is our current HEO.
73 Bob W7LRD
__
Does anyone know what mode AO-7 has been in lately?
Kevin Smith
N3HKQ
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I , for the first time, tried to work AO-7.
I could hear the beacon.
The logs indicated it was in Mode A ?
And that's what I tried .. But heard nothing.
Not my own signal or anyone elses ..
Was it active over the US during the 9ish AM pass?
Randy - N2CUA
_
Hi all ..
I am having trouble working AO-07 ..
Could just be newbie syndrome... But I truly
Am not sure why I cant..
I have an FT-897D, 13 element 2 meter yagi and a 11 element 432 yagi.
I can also effectively use the 2 meter yagi on 432.. Matches well
And have used it on repeaters up to 60 mi
Hi All,
Just worked thru mode-B xpnder all seems normal.
73
andre
ZS2BK
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Hi All,
Just worked thru ao-7 mode-B xpndr and all seems normal.
73
andre
ZS2BK
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Last two passes no go on AO-7, either mode. Anyone use it??
73 Bob W7LRD
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Those of you working AO-7, what is a good minimalistic set-up?
Should I be able to work it with an Arrow antenna, a RX pre-amp,
and a Ten Tec Mode B box?
Bill W1PA
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to those interested-AO-7 switches mode at 2335Z exactly. Seems to increase
in time very very slowly.
73 Bob W7LRD
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I notice when AO-7 is out there at 4000km I can notice the delay in cw from my
monitor to the 8000km round trip to and from AO-7. Kind of shades of AO-40
(sobsob) when the delay was really noticable, and when we listened to ourselves
(ssb) we had to turn down the rx volume a little as no to s
What is that other web site where we can keep track of what mode AO-7 is curren
tly in? Having senior moments and can't keep track of it.
73 Bob W7LRD
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Hello and happy new year,
I've just been listening to AO-7. The 10m beacon was off and I couldn't
raise a signal through the transponder. But I did hear the 70cm beacon
and it was only transmitting a constant carrier (no RTTY or CW this time).
Any of the old hands know what would cause this?
I copied 2E1EUB and MM5AJW on the latest AO-7 pass. Was not quick enough on
the return etc to get them. First time I heard anything other that
Mika-OH8MBN. So you European stations help me to streetch the footprint.
73 Bob W7LRD
Seattle, Wa.
CN87wk
__
This last pass of AO-7 I copied RN1NW just about at his LOS, unfortunately he
did not hear me. Our distance is 7686Km. I am not sure what the current DX
record is. Is there a current place where we are keeping track of these
things? I remember Mack was doing this from SV land. I must r
To break away from the current irrelevant thread. A momentous QSO from WC7V in
DN45 to RN1NW in KP71 took place today on AO-7. The distance is about 7659
km. Great going guys! Stretching to foot print is always a challenge and
fun. I now return you to the current round of bs.
73
Hello friends,
Today in the 161.057 orbit of the AO-7 approximately 22:51 UTC our friend
Joe, K3SZH, managed to maintain a short QSO with Francisco Ramirez, PY2OV. The
distance between the two stations was 7738 km (4833 Miles). And with absolute
certainty the QSO could be extended by a grea
Hello
Just got off AO-7, it really sounds not too good. Weak and distorted audio.
Like not enough voltage from the 35 year old solar cells. Heard eveything from
response to a CME event to being in mode C to being hit by whatever. The audio
distortion does not depend on the uplink power,
One thing I always noticed is that its recommended to not exceed 5 watts
when operating on AO-7, but I'm not seeing anything about maximum gain to
use. I have an Arrow II handheld yagi and on the 440 side supposedly it has
a 10dbd gain which would give me effectively 50 watts output assuming no
los
Hello,
Congratulations, Joe and Luciano, on your outstanding, record-setting QSO! We
must also give credit to the " Powers of the Heavens Above" who have kept AO-7
communicating with us!
73's Pete
WB2OQQ
www.massapequanyweather.com
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Was wondering something, being rather new at all this.
Worked someone last week on AO 7 but mostly I just hear myself. So I am
convinced that the bird and I are in fact functional.
I've listened, tuned around, and threw out my call, where is everyone?
For example this early A.M.
Are there any stations in Mexico, Central or South America that is
interested in working AO7?
I am looking to try and work anyone on AO7 mode B. I am presently trying
to get my antennas put up for working Mode A but it will be another week
or more before I am ready to try Mode A.
If anyone i
I heard OH5LK cqing on AO7 could not find myself quick enough to pounce. He's
not in qrz, anyone know?
work them till they drop
'73 Bob W7LRD
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Hello All,
I heard something interesting earlier today while monitoring an AO-7 pass above
my QTH at around 23:30Z. The mode B (U/V) transponder basically went dead, and
I heard a very odd buzzing sound in about the centre of the passband, with no
activity anywhere else in the passband. Not a
Hello All,
I was quite surprised today to work Neil, ES6DO in Estonia just before 18:00Z
on AO-7 mode B. I was listening to that pass with the hopes of working a few
UK stations I heard a few days ago, and was just about to shut the rig down at
the end of the pass, when I heard a CW station ca
Was just about to enjoy a CW QSO with PV8DX on AO-7 and everything
disappeared. Has it been acting up lately or is it me?
Rick
W2JAZ
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AO-7 seemed to be transmitting cw telemetry today. I copied the following
around 1300Z Frequency 145.969mhz. Mode B
252 252 252
324 324 324 324
496 496 v 496
568 568 568 568
696 696 696 696
hi hi
180 180 180 180
252 252
Always check here:
http://oscar.dcarr.org/
It looks like it's been in good shape today based on the satellite
status page and log comments: http://aar29.free.fr/sat/ao7/ao7log.php
Of course, it can't be guaranteed that it'll stay in Mode B on each pass.
73,
Paul, N8HM
On Sat, Jun 7, 2014 at
Bob,
Some QRO CW station was hammering the transponder, forcing the mode change.
Glenn AA5PK
-Original Message-
From: Bob- W7LRD
Sent: Friday, June 13, 2014 5:39 PM
To: amsat-bb@amsat.org
Subject: [amsat-bb] AO-7
At 2231Z AO-7 downlink quit. In full sun, any ideas?
73 Bob W7LRD
Drew KO4MA
-Original Message-
From: amsat-bb-boun...@amsat.org [mailto:amsat-bb-boun...@amsat.org] On
Behalf Of Bob- W7LRD
Sent: Friday, June 13, 2014 6:40 PM
To: amsat-bb@amsat.org
Subject: [amsat-bb] AO-7
At 2231Z AO-7 downlink quit. In full sun, any ideas?
73 Bob
- Original Message -
From: "Glenn Miller - AA5PK"
To: "Bob- W7LRD" , amsat-bb@amsat.org
Sent: Friday, June 13, 2014 3:47:32 PM
Subject: Re: [amsat-bb] AO-7
Bob,
Some QRO CW station was hammering the transponder, forcing the mode change.
Glenn AA5PK
-
Well said.
73, Bob KIØG
> On Jun 13, 2014, at 4:04 PM, "Andrew Glasbrenner"
> wrote:
>
> I have a theory, and it's just a theory based on my time managing AO-51, and
>
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Not
Through general consensus would it be possible to establish a unofficial "DX
watering hole". Time is the essential limiting factor when attempting DX
contacts on AO-7, or at times on FO-29. Elevating angles are usually less than
4 degrees. My QTH (near Seattle, Wa. CN87) has a ever so small oppo
Hey everyone,
My thanks to K8YSE, who heard my faint CQ on AO-7 at 13:16 UTC this morning and
called me. We had a contact that lasted about a minute with a few exchanges,
which is really a thrill here because I was transmitting a half-watt out on a
Yaesu FT-817ND.
As I suspected from the "test
Hey everyone,
I worked the AO-7 pass just after 00:00 UTC here because it had a maximum
elevation for me of almost 89 degrees. I wanted to see how much, if any, my
ability to work would expand when runninng a half-watt if a used CW instead of
SSB.
On this pass, at least, I had a copyable sign
During the last week, all the AO-7 morning passes over Brasil
are not good: very weak and distorted signal.
But all the evening passes are OK: very good signal.
What´s hapening ?
73 de Roland PY4ZBZ
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Does anyone have an idea when we go from a to b or b to a? Looking at the log
it seems not very consistant.
73 bob W7LRD
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Here is an audio recording from QSO with Andre ZS2BK, distance = 6890 km !
http://www.qsl.net/py4zbz/satelite/ZS2BK_AO7.wav
Only 2 element Yagi on VHF and 6 el on UHF:
http://www.qsl.net/py4zbz/satelite.htm#owa6
73 de Roland PY4ZBZ
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Is anyone able to hear the AO-7 beacon on: 145.9775 MHz CW?
I just tried without any luck, from Orlando FL.
Joseph Armbruster, KJ4JIO
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Hello All,
Yesterday, when the AO-7 has radically changed the mode B to mode A, I noticed
that the amount of QSO in mode "A" increased significantly, we see in the log
of the AO-7. The signals are stronger at 29.450 MHz. Now the night, I heard
stations of PY5LF, PY4ZBZ and especially Joe, K3
Hello,
The satellite AO-7, is not active, I could not listen to the Beacon or my
return in mode A and mode B today at 19:55 UTC. Looking at the list of website
logs and Oscar satellite status, the information is that the satellite was
turned off after 13:00 UTC. Let's hope it's nothing serious
Hello AO-7 fans
Just worked OH5LK in KP30on from CN87wk, near Seattle, Wa., that's 7692km. I
believe the record is 7766km, but whose keeping track . So you N.
European stations keep listening to your LOS.
73 Bob W7LRD
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At 2000Z (soon) I will have a good footprint into Northern Europe on AO-7from
Seattle Wa. CN87wk. Frequency about 145.950- .952 Lets try to make it happen!
73 Bob W7LRD
Washington State AMSAT area coordinator
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Congratulations Bob. You and Fedor managed to work a good distance via AO-7.
73,
Piraja, PS8RF
_
Agora é fácil compartilhar fotos no Messenger: solte todas na janelinha. Veja
como!
http://www.wi
AO-7 has normally switched modes every other day
except during periods of eclipse when it stays in
Mode B. On June 8th, it was in Mode A as predicted,
however, when it was supposed to switch to Mode B
between 0200 and 0500 on June 9th, the AO-7 log reported
that it was heard in Mode B at 0407z by
AO-7 seems "stuck" in mode B. This is not a bad thing. Anyone know, how, why
etc.
73 Bob W7LRD
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Hello friends,
The new record via AO-7 was established today between Luciano, PY5LF and Joe ,
K3SZh via AO-7. The distance the new record is 7839 KM. I have a audio record
with a portion of the QSO. The log of QSO can be seen on web site
http://www.planetemily.com/ao7/ao7log.php . Congratul
Hello Northern Europe-At 1836Z you will have a short window to CN87 (Seattle
Wa.) on AO-7. I will be there.
73 Bob W7LRD
CN87wk
Seattle, Wa.
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The AO-7 Mode A pass on 9/18/10 at approximately 1430 UTC (POS with 14 degs
elevation) at my location, FM-19, was truly impressive. The CW downlink was
rock solid for the entire pass into my little 2 element 10 meter yagi with
my uplink power of 10-15 watts into a 3 X 3 element RHCP yagi. The CW
Hello Dieter.
Try this.
Click on ... NEW CONTACT.
Scroll to the bottom of the page.
Check the - REMEMBER ME- box.
You should now be able to edit your 'own' entries by clicking on the spyglass
at the left of the screen.
Despite repeated requests, N1DID (formerly W0EEC) ne
I will have a 3-4 minute footprint into N. Europe next pass at 1858Z. Check
your tracking program to CN87, maybe we can make it happen! Around 145.951 +/-
a little.
73 Bob -W7LRD
Seattle- CN87
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There is a link off of the AO-7 resource page for a logger for scheduling
contacts but it doesn't work.
Does anybody know of a real time/near time reflector for scheduling more
specifically AO-7 contacts or even a general reflector covering all the
satellites?
Thanks in advance and 73,
Saw a post a few days ago regarding AO-7 Mode change.
Today 13 Jan, 2011 the mode changed from A to B at 23:28z.
Seems like it is getting later as time progresses. Last time I noted a changes
was back in late Novenber at about 23:23z and in mid December at 23:25z.
Scott AA5AM
Anyone who would like to try to establish a new distance record on AO-7 mode B,
get hold of me. I believe the current record is 7766km. The potential distance
is 7907km. I have worked out to 7692km thankyou OH5LK. New satellite
tower/antennas complete. I am located near Seattle Wa...CN87wk and e
the next pass at 1759Z I will be looking for N. Eu on about 145.957
73 Bob W7LRD
CN87wk Seattle, Wa.
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the next pass of AO-7 at 1942Z I will be looking for N. Europe. I heard SM3KPX
the last pass, always looking for Mika! On or about 145.957.
73 Bob W7LRD
CN87wk
Seattle, Wa.
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Can someone tell me what type and polarization the antennas are that are
currently in use on the AO-7 satellite?
I've done many searches and cannot find this information anywhere I have
looked.
Thanks and 73,
Ed, K0NW
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Very week signal !... on orbit #177000 over Brazil, at 20:20 UTC.
Problem with solar panels ? or illumination ?
QSO with PU2RAS.
73 de Roland PY4ZBZ
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shortly at 1831Z I will have a foot print to N. Eu. also a part of UK. from
Seattle Wa. CN87. On about 145950 max el. 5*
73 Bob W7LRD
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Does anyone have any success in mode A? If so what type of 10m antenna?
Kevin
KF7MYK
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I was thinking of making the 10m ring and trying that this weekend. (Assuming
AO-7 cooperates) Also what do you think about a 3 elem beam/no boom strung
between two trees pointing towards space? Think that would work ok? How far up
would the reflector have to be off the ground or rather how clos
In the spirit of "Use what you have to begin with!", I have had surprising
success with a simple magmount CB whip cut for 10m. It sits in a corner of the
shack on a large metal serving tray "borrowed" from the XYL. I've worked
stations over in Europe with it.
73 Nick KB1RVT
Sent from my iPhon
I lost track of the "switch over" on AO-7. Trying make a sked with the UK later
in Jan. Happy New year to all my satellite friends. Check out Jan. QST page 20.
73 Bob W7LRD
CN87
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Five days into it's eclipse season, AO-7 is operating very well.
Strong Mode B signals on the last pass over eastern North America. I
worked PV8DX, N8RO, KV1J (his first AO-7 QSO), and KB1RVT. My 25 watts
ERP was plenty until the satellite started going behind the trees to
the north.
Hope to hear
Good morning,
AO-7 seems to be showing some odd behavior. For about three weeks of the
eclipse cycle, it had been operating perfectly in Mode B with strong and
clear signals on each and every pass. However, yesterday it was off during
two ascending passes over the United States. It was back in Mod
Rick,
It's not you. It's been switching off (or into Mode D) quite often.
Hopefully this is just a temporary condition due to sun angles at this
point in it's orbit.
73,
Paul, N8HM
On Fri, May 30, 2014 at 5:29 PM, Richard Lawn wrote:
> Was just about to enjoy a CW QSO with PV8DX on AO-7 and
WC7V confirmed to me that AO-7 was in Mode A after the Mode B transponder
shut off.
This likely means that my theory of a power drain causing the satellite to
automatically switch into Mode D is incorrect and this is just a
manifestation of the random mode switching that has been a part of AO-7's
Sadly, the "alligators" (2 specific violators come to mind...) who need to
hear this admonition are not BB subscribers...
George, KA3HSW
- Original Message -
From: "Paul Stoetzer"
To: "Amsat BB"
Sent: Friday, May 30, 2014 6:14 PM
Subject: Re: [ams
trying AO-7 this AM-not on mode B or A?? op trouble??
73 Bob W7LRD
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I have listened several times and never heard the CW beacon, so that's neat.
The channel 6D value shows the telemetry to be nothing more than
gibberish, unfortunately, as that number should be 50 +/- 1.
73,
Paul, N8HM
On Wed, Jun 4, 2014 at 9:24 AM, KERRY LA*DUKE wrote:
> AO-7 seemed to be tra
I was listening to AO-7 in Mode B as it rose at 2153Z.
At 2158Z, AO-7 suddenly switched from Mode B to Mode A.
At the time of the switch, there were two stations using excessive power (badly FMing) on the bird. Not sure if that was a
coincidence or not.
Called CQ on Mode A in both CW and SSB
Bob W7RLD wrote:
Through general consensus would it be possible to establish a unofficial
"DX watering hole"...Essentially, use a given frequency (downlink) only
when the satellite is less than 4-5 degrees.
Wayne replies:
I don't understand. Every satellite is always less than 4 degrees
el
It is very rare to hear clear CW from the AO-7B
telemetry beacon around 145.972. Most of the time
there is no beacon at all. Sometimes there is
jibberish. Usually the signal is very weak.
With AO-7 going through eclipse on every orbit, the
satellite can come out of eclipse in different modes/
Hello
There is a short "window" between Seattle (CN87) and Northern Europe at 2212Z.
I will be on 145.958 +/- a little. Make my day!
73 Bob W7LRD
CN87
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Hi all,
On the pass with AOS here in Copenhagen at 0752 UTC
it was in mode-B :-)
Merry Christmas and Happy New Year to everyone.
73 OZ1MY
Ib
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Hello All
�
I am a novice
satellite operator. I have been completing my setup for satellites and recently
I made
my first contact on AO- 51 with John K8YSE.
�
I wonder if is
possible for me use the AO-7 in mode B. I tried to hear it in different passes,
but I
didn’t hear anything, neither t
Not having much experience working the SSB birds, can anyone give me a rough
schedule of when AO-7 goes from mode B to A and vice versa, and what mode it is
in right now. I am supposed to work a SSB pass with a guy this coming Monday
night around 2300z, and we only have mode B equipment. Is th
"Account suspended"... hacked, perhaps?
George, KA3HSW
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Hi All,
Congrats to Luciano PY5LF and Pierre ZS6BB who just completed a 2x CW
QSO
via AO-7
which is a distance of 7,630 km between these two stations. (GG54jm -
KG43eu)
The mp3 clip shows the short window they had with good signals both ways.
Well Done guy's !!!
73
andre
zs2bk
_
Hello all,
I posted a short video with the contact maintained today with Andre, ZS2BK via
AO-7 in mode B ( Orbit 60848 - 19:47 UTC - 01/08/10 ). We keep the QSO with a
small window that the AO-7 has provided us. The window was only about 34 sec,
this time interval we could not match any comm
I am copying a very strong carrier on AO-7 as I write this...
435.106MHz , no signs of modulation. Planet Emily latest reports show the
transponder might be off... I didn't listen for myself... have to swap co-ax,
but I was busy trying to figure out if the carrier were definitely the old
girl,
at 23:11Z. RTTY is slightly audible, no idea if it is decodable or not.
73, Drew KO4MA
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Hello All,
Just heard AO-7's 70cm CW beacon sending valid telemetry (2010/03/14
07:25 UTC). Entering the data below into the spreadsheet gives a beacon
power output of 338mW. All else seems nominal.
73 de David VK5DG
HI HI
100 172 177 177
273 201 210 254
370 311 344 347
431 440 441 441
531
Some days we are seeing very strange behavior in the AO-7. In some orbits can
only hear the feedback on the downlink when the satellite is approaching my
station at about 30 degrees elevation, before is impossible to hear any signal
via AO-7. Using two pre-amplifier, one in the TS 2000x and t
Hey everyone,
I've never heard AO-7 so busy.
I'm sure she has been - "in the old days," back in the 1970s when she was
still new to orbit. But tonight on the pass that reached the W4G Field Day
site about 0026 UTC, I heard more stations on AO-7 than I've heard in the
two years I've been wor
Anyone know the best distance for mode A on AO-7? Is there a "gate keeper" for
such information? I am trying to work JA from Seattle, right now it's all
email and planning.
73 Bob W7LRD
Seattle
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AO-7 has now operated longer this second time around ... (compared to the first
time from the 1974 era).
Details on the AO-7 Resource Page.
73 John.
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