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CX2SA > SATDIG 20.06.19 00:36l 956 Lines 28563 Bytes #999 (0) @ WW
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Sent: 190619/2234Z @:CX2SA.SAL.URY.SOAM #:8324 [Salto] FBB7.00e $:AMSATBB14238
From: CX2SA@CX2SA.SAL.URY.SOAM
To : SATDIG@WW
Today's Topics:
1. Upcoming ARISS Contact Schedule as of 2019-06-19 19:00 UTC
(aj9n@???.????
2. Re: Satellite rise time/elevation app (Hasan al-Basri)
3. Arrow 2 Antenna (Kees van Oosbree)
4. Re: DopplerPSK (Phil Karn)
5. Re: Arrow 2 Antenna (Bob)
6. Re: DopplerPSK (Pedro Converso)
7. Re: Arrow 2 Antenna (Paul Andrews)
8. Re: DopplerPSK (Phil Karn)
9. Re: SDRSharp - HW Virtual Serial Port - UZ7HO's High Speed
Soundmodem - Wisp problems (Scott)
10. Re: Arrow 2 Antenna (johnv@????????.????
----------------------------------------------------------------------
Message: 1
Date: Wed, 19 Jun 2019 18:32:56 +0000 (UTC)
From: aj9n@???.???
To: amsat-bb@?????.???
Subject: [amsat-bb] Upcoming ARISS Contact Schedule as of 2019-06-19
19:00 UTC
Message-ID: <226893880.2959915.1560969176581@????.?????.???>
Content-Type: text/plain; charset=UTF-8
Upcoming ARISS Contact Schedule as of 2019-06-19 19:00 UTC
Quick list of scheduled contacts and events:
GBPOU RM "Saransk Polytechnic College", Saransk Russia, direct via R4UAB
The ISS callsign is presently scheduled to be RS?ISS?
The scheduled astronaut is Oleg Konenenko
Contact is go for Sat 2019-06-15 10:39 UTC
?
King Island District High School, Currie, TAS, Australia, telebridge via
IK1SLD
The ISS callsign is presently scheduled to be OR4ISS
The scheduled astronaut is David St-Jacques KG5FYI
Contact was successful: Wed 2019-06-19 08:49:20 UTC 58 deg (***)
?
Rowan Preparatory School, Claygate, United Kingdom, direct via GB4RPS
The ISS callsign is presently scheduled to be NA1SS
The scheduled astronaut is Nick Hague KG5TMV
Contact is go for: Thu 2019-06-20 12:48:55 UTC 53 deg
Watch for live stream at https://live.ariss.org/
?
Traverse Area District Library, Traverse City, MI, direct via W8TCM
The ISS callsign is presently scheduled to be NA1SS
The scheduled astronaut is Nick Hague KG5TMV (***)
Contact is go for: Fri 2019-06-28 14:02:16 UTC 25 deg (***)
?
?
Note, all times?are approximate.? It is recommended that you do your own
orbital prediction?or start listening about 10 minutes before the listed
time.
All dates and?times listed follow International Standard ISO 8601 date and
time format?YYYY-MM-DD HH:MM:SS
The complete schedule page has been updated as of?2019-06-19 19:00 UTC.? (***)
Here you will find a listing of all scheduled?school contacts, and
questions, other ISS related websites, IRLP and?Echolink websites, and
instructions for any contact that may be streamed?live.??
http://www.amsat.org/amsat/ariss/news/arissnews.rtf
http://www.amsat.org/amsat/ariss/news/arissnews.txt
?
The successful school list has been updated as of 2019-06-19 19:00 UTC. (***)
http://www.amsat.org/amsat/ariss/news/Successful_ARISS_schools.rtf
?
?
The ARISS webpage is at http://www.ariss.org/??
Note that there are links to other ARISS websites from this site.
The main page for Applying to Host a Scheduled Contact may be found at
http://www.ariss.org/apply-to-host-an-ariss-contact.html??
ARISS Contact Applications (United States)
?
The ARISS webpage is at http://www.ariss.org/??
Note that there are links to other ARISS websites from this site.
******************************************************************************
******************************************************************************
****************
ARISS Contact Applications (Europe, Africa and the Middle East)
?
Schools and Youth organizations in Europe, Africa and the Middle East
interested in setting up an ARISS radio contact with an astronaut on board
the International Space Station are invited to submit an application from
September to October and from February to April.
Please refer to details and the application form at
www.ariss-eu.org/school-contacts.? Applications should be addressed by email
to:? school.selection.manager@????????.???
?
ARISS Contact Applications (Canada, Central and South America, Asia and
Australia and Russia)
?
Organizations outside the United States can apply for an ARISS contact by
filling out an application.? Please direct questions to the appropriate
regional representative listed below. If your country is not specifically
listed, send your questions to the nearest ARISS Region listed. If you are
unsure which address to use, please send your question to the ARISS-Canada
representative; they will forward your question to the appropriate
coordinator.
?
For the application, go to:? http://www.ariss.org/ariss-application.html.
ARISS-Canada and the Americas, except USA: Steve McFarlane, VE3TBD email to:
ve3tbd@?????.???
ARISS-Japan, Asia, Pacific and Australia: Satoshi Yasuda, 7M3TJZ email to:
ariss@???????.???? Japan Amateur Radio League (JARL) http://www.jarl.org/ ?
ARISS-Russia: Soyuz Radioljubitelei Rossii (SRR) https://srr.ru/?
?
?
******************************************************************************
ARISS is always glad to receive listener reports for the above contacts.?
ARISS thanks everyone in advance for their assistance. ?Feel free to send
your reports to aj9n@?????.??? or aj9n@???.???.
?
Listen for the ISS on the downlink of 145.8? MHz.
?
******************************************************************************
*
?
All ARISS contacts are made via the Kenwood radio unless otherwise noted.
?
******************************************************************************
*
Several?of you have sent me emails asking about the RAC ARISS website and
not being able?to get in.? That has now been changed to?
http://www.ariss.org/
Note that there are links to other ARISS websites from this?site.
****************************************************************************
Looking for something new to do?? How about receiving DATV from the ISS??
Please note that the HamTV system has been brought back to earth for
troubleshooting.? Please monitor ARISS-EU or ARISS-ON for the very latest
news on the troubleshooting efforts.?
?
If interested, then please go to the ARISS-EU website for complete details.?
Look for the buttons indicating Ham Video.????????????
http://www.ariss-eu.org/?
If you need some assistance, ARISS mentor Kerry N6IZW, might be able to
provide some insight.? Contact Kerry at kbanke@?????????.???
The HamTV webpage:? https://www.amsat-on.be/hamtv-summary/
?
?
****************************************************************************
ARISS congratulations the following mentors who have now mentored over 100
schools:?
Satoshi 7M3TJZ with 135
Francesco IK?WGF with 132
Gaston ON4WF with 123
Sergey RV3DR with 117
****************************************************************************
The?webpages listed below were all reviewed for accuracy.? Out of date
webpages?were removed, and new ones have been added.? If there are additional
ARISS?websites I need to know about, please let me know.
Total number?of ARISS ISS to earth school events is 1318. (***)
Each school counts as 1?event.
Total number of ARISS ISS to earth school contacts is 1261. (***)
Each contact may have multiple schools sharing the same time slot.
Total number of ARISS supported terrestrial contacts is?47.
A complete year by year breakdown of the contacts may be found in the
file.
http://www.amsat.org/amsat/ariss/news/arissnews.rtf
Please?feel free to contact me if more detailed statistics are needed.
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
The?following US states and entities have never had an ARISS contact:
South Dakota, Wyoming, American?Samoa, Guam, Northern Marianas Islands, and
the Virgin Islands.
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
QSL?information may be found at:??
http://www.ariss.org/qsl-cards.html?
ISS callsigns:? DP?ISS, IR?ISS, NA1SS, OR4ISS,?RS?ISS
****************************************************************************
Frequency? chart for packet, voice, and crossband repeater modes showing
Doppler? correction? as of 2005-07-29 04:00 UTC
http://www.amsat.org/amsat/ariss/news/ISS_frequencies_and_Doppler_correction
.rtf
Check out the Zoho reports of the ARISS?contacts
https://reports.zoho.com/ZDBDataSheetView.cc?DBID=412218000000020415
****************************************************************************
Exp. 58 on orbit
Oleg Konenenko
David St-Jacques KG5FYI
Anne McClain
?
Exp. 59 on orbit
Christina Koch
Aleksey Ovchinin
Nick Hague KG5TMV
****************************************************************************
73,
Charlie?Sufana AJ9N
One of the ARISS operation team mentors
?
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------------------------------
Message: 2
Date: Wed, 19 Jun 2019 14:46:17 -0500
From: Hasan al-Basri <hbasri.schiers6@?????.???>
To: Roy Dean <royldean@?????.???>
Cc: AMSAT-BB <amsat-bb@?????.???>
Subject: Re: [amsat-bb] Satellite rise time/elevation app
Message-ID:
<CAM4UQf0ZWN6pT=TKevPE-09K9U8LrOi3rgp4yVV=GZAtJFR0ew@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
Been using it for more than a month, very handy!
73, N0AN
Hasan
On Wed, Jun 19, 2019 at 8:43 AM Roy Dean via AMSAT-BB <amsat-bb@?????.???>
wrote:
> https://www.g0kla.com/klatrack/index.php
>
> --Roy
> K3RLD
>
> I?m now at my vacation QTH and for the life of me I can?t remember the name
> > of this app and want to install it on my computer at the lake house. Can
> > someone point me in the right direction. Rick, W2JAZ
> _______________________________________________
> Sent via AMSAT-BB@?????.???. AMSAT-NA makes this open forum available
> to all interested persons worldwide without requiring membership. Opinions
> expressed
> are solely those of the author, and do not reflect the official views of
> AMSAT-NA.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: https://www.amsat.org/mailman/listinfo/amsat-bb
>
------------------------------
Message: 3
Date: Wed, 19 Jun 2019 14:58:57 -0500
From: Kees van Oosbree <arrl.kvan@?????.???>
To: amsat-bb@?????.???
Subject: [amsat-bb] Arrow 2 Antenna
Message-ID:
<CA+-4feNikH6h_Fkmcn_q=XxpV8-4cYXhorAH5DQp6ONFFzTXog@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
Hello there!
I've been having trouble with my Arrow Antenna on the FOX sats. It seems
that when I point my antenna at the satellite, say on a 70 degree max
elevation pass, it doesn't receive it. But when I point the antenna at the
ground, it comes in very clearly. Towards the end of the pass, I start
receiving it again because I'm pointing my antenna near the horizon. At
this time, I make all of my contacts. What could be the problem? I
checked the elements on the antenna and they aren't mixed up. Thank you!
73 de KE0STO
------------------------------
Message: 4
Date: Wed, 19 Jun 2019 13:20:18 -0700
From: Phil Karn <karn@????.???>
To: amsat-bb@?????.???
Subject: Re: [amsat-bb] DopplerPSK
Message-ID: <60626192-f04f-c50a-be74-e2faab5f2fba@????.???>
Content-Type: text/plain; charset=utf-8
On 6/12/19 19:58, aflowers--- via AMSAT-BB wrote:
> The same algorithm in DopplerPSK could be used on a complex signal in the
SDR architecture, and it could work equally on TX and RX in the processing
chain.? ?To the accuracy of the orbital elements everyone uses, if everyone
corrects their uplink and downlink properly there is no perceived frequency
drift by anyone using the satellite.? Just what you need for a GHz-range LEO
with a narrow-band transponder, eh?
That's exactly what I do in the SDR I've been working on. It uses a
Funcube dongle and Raspberry Pi (or any general purpose Linux or OSX
system) and applies an optional frequency rate to the digital local
oscillator. The Funcube samples at 192 kHz, so you have a lot of room.
Right now it can do a quadratic phase function, i.e., it can sweep at a
constant rate in frequency, which is a constant acceleration with
continuous phase and frequency. (I'll have to think about which order
PLL this corresponds to.)
It would be easy to extend this to higher orders, but because you can
update everything very rapidly (it's all in software) I've seen no real
need to do so.
Originally the SDR read the velocity data from a pipe, but more recently
I've changed over IP multicasting for everything. A completely separate
program, which can be on a different computer, multicasts the tracking
data to the LAN and the SDRs (there can be more than one) pick it up and
make the frequency computations based on the current frequency.
It all works very well. I tested it on one of the older Japanese
cubesats that transmits a CW beacon on 70 cm. At first I thought I had a
bug in my program because the CW shifted every time it started. Then I
realized it was just a soft power system in an old satellite; the beacon
remained rock steady in a 200 Hz CW filter from horizon to horizon.
Naturally this requires accurate elements and clock time. It was a
little weird hearing miscellaneous spurs sweep through the passband as
the signal stayed in the middle.
All said, PSK31 still isn't the best choice for a LEO satellite with a
lot of Doppler...
Phil
------------------------------
Message: 5
Date: Wed, 19 Jun 2019 16:25:42 -0400
From: Bob <WB4SON@?????.???>
To: Kees van Oosbree <arrl.kvan@?????.???>
Cc: AMSAT-BB <amsat-bb@?????.???>
Subject: Re: [amsat-bb] Arrow 2 Antenna
Message-ID:
<CAPonRZ-LStkTHAp6MwfHZiHkhGxhEE_nx1buAvRjicsPwVdGDg@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
Total guess, but perhaps a connector issue on the feedline? To rule that
out use a SWR meter between the rig and antenna and see if the SWR changes
when you are pointing things up high.
73, Bob, WB4SON
On Wed, Jun 19, 2019 at 4:08 PM Kees van Oosbree via AMSAT-BB <
amsat-bb@?????.???> wrote:
> Hello there!
>
> I've been having trouble with my Arrow Antenna on the FOX sats. It seems
> that when I point my antenna at the satellite, say on a 70 degree max
> elevation pass, it doesn't receive it. But when I point the antenna at the
> ground, it comes in very clearly. Towards the end of the pass, I start
> receiving it again because I'm pointing my antenna near the horizon. At
> this time, I make all of my contacts. What could be the problem? I
> checked the elements on the antenna and they aren't mixed up. Thank you!
>
> 73 de KE0STO
> _______________________________________________
> Sent via AMSAT-BB@?????.???. AMSAT-NA makes this open forum available
> to all interested persons worldwide without requiring membership. Opinions
> expressed
> are solely those of the author, and do not reflect the official views of
> AMSAT-NA.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: https://www.amsat.org/mailman/listinfo/amsat-bb
>
------------------------------
Message: 6
Date: Wed, 19 Jun 2019 17:55:17 -0300
From: Pedro Converso <pconver@?????.???>
To: Phil Karn <karn@????.???>
Cc: amsat-bb@?????.???
Subject: Re: [amsat-bb] DopplerPSK
Message-ID:
<CANTZqK=gh7so4X6PB=J11-VDK5G48n6pnAuZwZHrA-JDG=+s6Q@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
Hello Phil,
Nice application for SDR !
You can also use for check these satellites that emit continuous carrier.
http://amsat.org.ar/pass?satx=lo-19,co-55
73, lu7abf, Pedro
On 6/19/19, Phil Karn via AMSAT-BB <amsat-bb@?????.???> wrote:
> On 6/12/19 19:58, aflowers--- via AMSAT-BB wrote:
>> The same algorithm in DopplerPSK could be used on a complex signal in the
>> SDR architecture, and it could work equally on TX and RX in the processing
>> chain. To the accuracy of the orbital elements everyone uses, if
>> everyone corrects their uplink and downlink properly there is no perceived
>> frequency drift by anyone using the satellite. Just what you need for a
>> GHz-range LEO with a narrow-band transponder, eh?
>
> That's exactly what I do in the SDR I've been working on. It uses a
> Funcube dongle and Raspberry Pi (or any general purpose Linux or OSX
> system) and applies an optional frequency rate to the digital local
> oscillator. The Funcube samples at 192 kHz, so you have a lot of room.
> Right now it can do a quadratic phase function, i.e., it can sweep at a
> constant rate in frequency, which is a constant acceleration with
> continuous phase and frequency. (I'll have to think about which order
> PLL this corresponds to.)
>
> It would be easy to extend this to higher orders, but because you can
> update everything very rapidly (it's all in software) I've seen no real
> need to do so.
>
> Originally the SDR read the velocity data from a pipe, but more recently
> I've changed over IP multicasting for everything. A completely separate
> program, which can be on a different computer, multicasts the tracking
> data to the LAN and the SDRs (there can be more than one) pick it up and
> make the frequency computations based on the current frequency.
>
> It all works very well. I tested it on one of the older Japanese
> cubesats that transmits a CW beacon on 70 cm. At first I thought I had a
> bug in my program because the CW shifted every time it started. Then I
> realized it was just a soft power system in an old satellite; the beacon
> remained rock steady in a 200 Hz CW filter from horizon to horizon.
> Naturally this requires accurate elements and clock time. It was a
> little weird hearing miscellaneous spurs sweep through the passband as
> the signal stayed in the middle.
>
> All said, PSK31 still isn't the best choice for a LEO satellite with a
> lot of Doppler...
>
> Phil
>
>
>
> _______________________________________________
> Sent via AMSAT-BB@?????.???. AMSAT-NA makes this open forum available
> to all interested persons worldwide without requiring membership. Opinions
> expressed
> are solely those of the author, and do not reflect the official views of
> AMSAT-NA.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: https://www.amsat.org/mailman/listinfo/amsat-bb
>
------------------------------
Message: 7
Date: Wed, 19 Jun 2019 17:01:37 -0400
From: Paul Andrews <w2hro.fn20@?????.???>
To: Bob <WB4SON@?????.???>
Cc: amsat-bb <amsat-bb@?????.???>
Subject: Re: [amsat-bb] Arrow 2 Antenna
Message-ID:
<CAOsf+NQ6QyVr-pAKC650XY8P=UFWAkYt3VnUT3C8qxfCbBhRUQ@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
Are the elements installed on the boom backwards? :0
Shortest element closest to the satellite.
Too obvious?
What antenna problem causes a null off the tip of the boom?
73 - Paul - W2HRO
On Wed, Jun 19, 2019, 16:27 Bob via AMSAT-BB <amsat-bb@?????.???> wrote:
> Total guess, but perhaps a connector issue on the feedline? To rule that
> out use a SWR meter between the rig and antenna and see if the SWR changes
> when you are pointing things up high.
>
> 73, Bob, WB4SON
>
>
> On Wed, Jun 19, 2019 at 4:08 PM Kees van Oosbree via AMSAT-BB <
> amsat-bb@?????.???> wrote:
>
> > Hello there!
> >
> > I've been having trouble with my Arrow Antenna on the FOX sats. It seems
> > that when I point my antenna at the satellite, say on a 70 degree max
> > elevation pass, it doesn't receive it. But when I point the antenna at
> the
> > ground, it comes in very clearly. Towards the end of the pass, I start
> > receiving it again because I'm pointing my antenna near the horizon. At
> > this time, I make all of my contacts. What could be the problem? I
> > checked the elements on the antenna and they aren't mixed up. Thank you!
> >
> > 73 de KE0STO
> > _______________________________________________
> > Sent via AMSAT-BB@?????.???. AMSAT-NA makes this open forum available
> > to all interested persons worldwide without requiring membership.
> Opinions
> > expressed
> > are solely those of the author, and do not reflect the official views of
> > AMSAT-NA.
> > Not an AMSAT-NA member? Join now to support the amateur satellite
> program!
> > Subscription settings: https://www.amsat.org/mailman/listinfo/amsat-bb
> >
> _______________________________________________
> Sent via AMSAT-BB@?????.???. AMSAT-NA makes this open forum available
> to all interested persons worldwide without requiring membership. Opinions
> expressed
> are solely those of the author, and do not reflect the official views of
> AMSAT-NA.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: https://www.amsat.org/mailman/listinfo/amsat-bb
>
------------------------------
Message: 8
Date: Wed, 19 Jun 2019 14:13:57 -0700
From: Phil Karn <karn@????.???>
To: Pedro Converso <pconver@?????.???>
Cc: amsat-bb@?????.???
Subject: Re: [amsat-bb] DopplerPSK
Message-ID: <e53b5b55-8ae3-f31e-161f-1c6da8e4ea0d@????.???>
Content-Type: text/plain; charset=utf-8
On 6/19/19 13:55, Pedro Converso wrote:
> Hello Phil,
>
> Nice application for SDR !
>
> You can also use for check these satellites that emit continuous carrier.
>
> http://amsat.org.ar/pass?satx=lo-19,co-55
>
> 73, lu7abf, Pedro
Seemed like a natural to me, since radios never tune cleanly.
The question about the satellites is how stable those carriers really
are. Doing this right requires a 2-way coherent Doppler transponder on
the spacecraft. We really should fly one.
Phil
------------------------------
Message: 9
Date: Wed, 19 Jun 2019 18:23:52 -0400
From: Scott <scott23192@?????.???>
To: Amsat - BBs <amsat-bb@?????.???>
Subject: Re: [amsat-bb] SDRSharp - HW Virtual Serial Port - UZ7HO's
High Speed Soundmodem - Wisp problems
Message-ID:
<CAJCSnOZe_7Hvwc3G8u2Org2BLHfnkSY8rCN7XbkLKBVSLcrdKg@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
Hello!
FS-3 is a complicated topic because there are a lot of moving parts and
everyone's hardware / software setup is different.
The key items to get straight are RX-audio, TX-audio, & PTT. All that
comes together and it controlled by the UZ7HO High-Speed Soundmodem app, as
you mentioned.
As a starting point, I'm happy to share the settings that work for my
particular RX / TX / PTT setup. Here is a picture w/ comments:
https://www.qsl.net/k/k4kdr//how-to/hs_soundmodem_settings.png
... but of course there is a lot more to it. We need to have everything on
the RX & TX side set with wide enough audio bandwidth to handle 9600 data,
we need to have a COM-port controlled PTT relay, and yet another COM port
ID is assigned by the computer via the "HW Virtual Serial Port" app to give
the WiSP (MSPE) software what it requires. If that's not enough, since the
downlink is constantly transmitting, the "full-duplex" option in UZ7HO
HS_Soundmodem needs to be enabled.
But as a first step, I hope that the picture of my settings might ring a
bell and help you realize what is not working exactly right in your setup.
Lastly, for anyone not familiar with FalconSat-3, a very neat feature is
that the APRS digipeater -and- BBS both work at the same time. So, you can
use something like UISS to send/receive APRS messages, WiSP or the new
PacSat Ground Station to upload/download messages posted on the BBS, or
both at the same time. All the traffic from both spacecraft services is
riding on the same full-duplex 9600 data stream, so both services can be
utilized by multiple operators all at the same time during a pass.
-Scott, K4KDR
=========================
On Wed, Jun 19, 2019 at 2:18 PM Vincenzo Mone via AMSAT-BB <
amsat-bb@?????.???> wrote:
> Hi folks,
>
> I have been off from the satellite for a while due to the broken Funcube
> Dongle Pro Plus.
>
> I have ordered and received a coupe of days ago my new one but I cannot get
> it working
>
> Properly on the Falconsat-3 Bird.
>
> I explain the problem hoping in some help.
>
> I am using SDRSharp - HW Virtual Serial Port - UZ7HO's High Speed
> Soundmodem
> - Wisp
>
> When I receive the satellite I can see the data incoming in the UZ7HO's
> High
> Speed Soundmodem
>
> But I do not see nothing in the MSPE ( Wisp ).
>
>
> When I try to transmit I can see the radio going in TX and it remains in TX
> as locked and get the error form the
>
> UZ7HO's High Speed Soundmodem saying:
>
>
> Error opening wave output device (unspecified error).
>
>
> I cannot get in RX again so I need to reset the PC.
>
> Please anybody can explain me were am I doing wrong?
>
> Thanks
>
> 73 de Enzo IK8OZV
>
> EasyLog 5 BetaTester
>
> EasyLog PDA BetaTester
>
> WinBollet BetaTester
>
> D.C.I. CheckPoint Regione Campania
>
> Skype: ik8ozv8520
>
> *********************************
>
> ****** GSM +39 328 7110193 ******
>
> ***** SMS +39 328 7110193 *****
>
> *********************************
>
------------------------------
Message: 10
Date: Wed, 19 Jun 2019 22:30:00 +0000 (UTC)
From: "johnv@????????.???? <johnv@????????.???>
To: Bob <WB4SON@?????.???>, Paul Andrews <w2hro.fn20@?????.???>
Cc: amsat-bb <amsat-bb@?????.???>
Subject: Re: [amsat-bb] Arrow 2 Antenna
Message-ID: <1072126604.3664430.1560983400971@????.?????.???>
Content-Type: text/plain; charset=UTF-8
I have had one Arrows but three duplexers.? Nice antenna, light weight but
not too forgiving if it gets bounced around.????? I am now using an Elk and
am quite happy with it.??? No more duplexes to fail because I am rough on my
toys.
JohnN7AME
On Wednesday, June 19, 2019, 2:02:52 PM PDT, Paul Andrews via AMSAT-BB
<amsat-bb@?????.???> wrote:
Are the elements installed on the boom backwards?? :0
Shortest element closest to the satellite.
Too obvious?
What antenna problem causes a null off the tip of the boom?
73 - Paul - W2HRO
On Wed, Jun 19, 2019, 16:27 Bob via AMSAT-BB <amsat-bb@?????.???> wrote:
> Total guess, but perhaps a connector issue on the feedline?? To rule that
> out use a SWR meter between the rig and antenna and see if the SWR changes
> when you are pointing things up high.
>
> 73, Bob, WB4SON
>
>
> On Wed, Jun 19, 2019 at 4:08 PM Kees van Oosbree via AMSAT-BB <
> amsat-bb@?????.???> wrote:
>
> >? Hello there!
> >
> > I've been having trouble with my Arrow Antenna on the FOX sats.? It seems
> > that when I point my antenna at the satellite, say on a 70 degree max
> > elevation pass, it doesn't receive it.? But when I point the antenna at
> the
> > ground, it comes in very clearly.? Towards the end of the pass, I start
> > receiving it again because I'm pointing my antenna near the horizon.? At
> > this time, I make all of my contacts.? What could be the problem?? I
> > checked the elements on the antenna and they aren't mixed up.? Thank you!
> >
> > 73 de KE0STO
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> _______________________________________________
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End of AMSAT-BB Digest, Vol 14, Issue 238
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