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CX2SA > SATDIG 23.10.17 22:40l 1026 Lines 26797 Bytes #999 (0) @ WW
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To : SATDIG@WW
Today's Topics:
1. Upcoming ARISS Contact Schedule as of 2017-10-23 07:00 UTC
(AJ9N@xxx.xxxx
2. Turnstile Antenna Design (vk4tec@xxxxxxxxxxxxx.xxxx
3. Turnstile antenna program / Falconsat-3 ques (Andrew Rich)
4. AirSpy Mini VS Funcube Dongle (vk4tec@xxxxxxxxxxxxx.xxxx
5. How to get SDR# to doppler correct SDR from Orbitron
(vk4tec@xxxxxxxxxxxxx.xxxx
6. Re: How to get SDR# to Doppler correct SDR from Orbitron (Alan)
7. PJ4/NA2AA (Paul Stoetzer)
8. Re: Turnstile Antenna Design (Mike Thompson)
9. Re: AirSpy Mini VS Funcube Dongle (vk4tec@xxxxxxxxxxxxx.xxxx
10. FunCube dongle DC offset (vk4tec@xxxxxxxxxxxxx.xxxx
11. Re: AirSpy Mini VS Funcube Dongle (Paul Andrews)
12. Re: AirSpy Mini VS Funcube Dongle (Paul Stoetzer)
----------------------------------------------------------------------
Message: 1
Date: Mon, 23 Oct 2017 04:05:57 -0400
From: AJ9N@xxx.xxx
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Upcoming ARISS Contact Schedule as of 2017-10-23
07:00 UTC
Message-ID: <15f0d0.ab62ecc.471efce5@xxx.xxx>
Content-Type: text/plain; charset="UTF-8"
Upcoming ARISS Contact Schedule as of 2017-10-23 07:00 UTC
Quick list of scheduled contacts and events:
Tallaght Community School, Dublin, Ireland, direct via EI2SDR and
Gymnasium R?ddningsgymnasiet Sando, Sand?verken, Sweden, telebridge via
EI2SDR
The ISS callsign is presently scheduled to be OR4ISS
The scheduled astronaut is Mark Vande Hei KG5GNP
Contact was successful: Thu 2017-10-19 12:49:33 UTC 58 deg (***)
Watch for live stream from Tallaght Community School:
https://www.youtube.com/user/TogDublin/live
Watch for live stream from Gymnasium R?ddningsgymnasiet Sando:
https://www.youtube.com/channel/UCdW96C_lHQx81qCSbW-Jzbw
And https://go.twitch.tv/ntigsundsvall
Istituto Scolastico Comprensivo ?Nardi?, Porto San Giorgio, Italy and
I.C. Michelangelo Buonarroti, Marina di Carrara, Italy
direct via I6KZR and IQ5VR
The ISS callsign is presently scheduled to be IR?ISS
The scheduled astronaut is Paolo Nespoli IZ?JPA
Contact was successful: Sat 2017-10-21 09:31:20 UTC 41 deg (***)
Watch for HamTV
?A.Gramsci-N.Pende?, Noicattaro, Italy and Istituto Comprensivo ?Tauro ?
Viterbo?, Castellana Grotte (Ba), Italy direct via IZ7RTN
The ISS callsign is presently scheduled to be IR?ISS
The scheduled astronaut is Paolo Nespoli IZ?JPA
Contact was successful: Sat 2017-10-21 14:23:14 UTC 86 deg (***)
Watch for HamTV
Chiddix Junior High School, Normal, IL, direct via W9AM
The ISS callsign is presently scheduled to be NA1SS
The scheduled astronaut is Joe Acaba KE5DAR
Contact is a go for: Mon 2017-10-23 15:31:15 UTC 27 deg
Beaconsfield State School, Mackay, Queensland, Australia, telebridge via
IK1SLD
The ISS callsign is presently scheduled to be IR?ISS
The scheduled astronaut is Paolo Nespoli IZ?JPA
Contact is a go for: Thu 2017-10-26 08:23:02 UTC 40 deg
Glanmire Community College, Cork, Ireland, direct via EI5CRC and Colegiul
National Calistrat Hogas Piatra Neamt, Piatra Neamt, Romania, telebridge
via EI5CRC
The ISS callsign is presently scheduled to be OR4ISS
The scheduled astronaut is Joe Acaba KE5DAR
Contact is a go for: Thu 2017-10-26 09:55:45 UTC 68 deg
Watch for live stream at http://www.tog.ie (***)
Istituto Tecnico Tecnologico ?Enzo Ferrari?, Borgo A Mozzano, Italy and
Liceo Statale ?G. D. Cassini?, Sanremo, Italy direct via IQ5LU and IQ1SM
The ISS callsign is presently scheduled to be IR?ISS
The scheduled astronaut is Paolo Nespoli IZ?JPA
Contact is a go for: Sat 2017-10-28 08:13:31 UTC 24 deg
Watch for Ham TV
****************************************************************************
**
International Space Station Astronauts are Calling CQ Students ?
ARISS-US program education proposal deadline is November 15, 2017
September 18, 2017: The Amateur Radio on the International Space
Station (ARISS) program is seeking proposals from U.S. schools,
museums, science centers and community youth organizations to host
radio contacts with an orbiting crew member aboard the International
Space Station (ISS) between July 1 and December 31, 2018.
Each year, ARISS provides tens of thousands of students with oppor-
tunities to learn about space technologies and space communications
through the exploration of Amateur Radio. The program provides
learning opportunities by connecting students to astronauts aboard
the International Space Station (ISS) through a partnership between
NASA, the American Radio Relay League, the Radio Amateur Satellite
Corporation and other Amateur Radio organizations and worldwide
space agencies. The program?s goal is to inspire students worldwide,
to pursue interests and careers in science, technology, engineering
and mathematics (STEM) through Amateur Radio.
Educators overwhelmingly report that student participation in the
ARISS program inspires an interest in STEM subjects and in STEM
careers. Ninety-two percent of educators who have participated in
the program have indicated that ARISS provided ideas for encourag-
ing student exploration, discussion, and participation, and 78
percent said that ARISS was effective in stimulating student
interest in STEM.
ARISS is looking for organizations that will draw large numbers
of participants and integrate the contact into a well-developed
education plan. Students can learn about satellite communications,
wireless technology, science research conducted on the space
station, what it is like to work in space, radio science, and any
related STEM subject. Students learn to use Amateur Radio to talk
directly to an astronaut and ask their STEM-related questions.
ARISS will help educational organizations locate Amateur Radio
groups who can assist with equipment for this once-in-a-lifetime
opportunity for students.
The proposal deadline for 2018 contacts is November 15, 2017.
The ARISS website has additional details on expectations, proposal
guidelines, and the proposal form. See:
http://www.ariss.org/hosting-an-ariss-contact-in-the-us.html
****************************************************************************
**
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@xxxxx.xxx or aj9n@xxx.xxx.
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?
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@xxxxxxxxx.xxx
****************************************************************************
ARISS congratulations the following mentors who have now mentored over 100
schools:
Satoshi 7M3TJZ with 124
Gaston ON4WF with 123
Francesco IK?WGF with 123 (***)
Sergey RV3DR with 100
****************************************************************************
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.
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 2017-10-23 07:00 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
Total number of ARISS ISS to earth school events is 1171. (***)
Each school counts as 1 event.
Total number of ARISS ISS to earth school contacts is 1127. (***)
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:
Arkansas, Delaware, 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
****************************************************************************
The successful school list has been updated as of 2017-10-23 07:00 UTC.
http://www.amsat.org/amsat/ariss/news/Successful_ARISS_schools.rtf
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
Listing of ARISS related magazine articles as of 2006-07-10 03:30 UTC.
http://www.amsat.org/amsat/ariss/news/ARISS_magazine_articles.rtf
Check out the Zoho reports of the ARISS contacts
https://reports.zoho.com/ZDBDataSheetView.cc?DBID=412218000000020415
****************************************************************************
Exp. 52 on orbit
Randy Bresnik
Paolo Nespoli IZ?JPA
Sergey Ryazanskiy
Exp. 53 on orbit
Mark Vande Hei KG5GNP
Alexander Misurkin
Joe Acaba KE5DAR
****************************************************************************
73,
Charlie Sufana AJ9N
One of the ARISS operation team mentors
------------------------------
Message: 2
Date: Mon, 23 Oct 2017 19:56:15 +1000
From: <vk4tec@xxxxxxxxxxxxx.xxx>
To: "AMSAT" <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Turnstile Antenna Design
Message-ID: <005901d34be5$2c6b2650$854172f0$@xxxxxxxxxxxxx.xxx>
Content-Type: text/plain; charset="us-ascii"
http://59.167.159.165/satreporter/turnstile.pdf
------------------------------
Message: 3
Date: Mon, 23 Oct 2017 18:36:03 +1000
From: Andrew Rich <vk4tec@xxxxxxxxxxxxx.xxx>
To: AMSAT-BB <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Turnstile antenna program / Falconsat-3 ques
Message-ID: <4CD2BD61-E0B5-48BD-83F8-39A1F7867D35@xxxxxxxxxxxxx.xxx>
Content-Type: text/plain; charset=utf-8
Hello
Is there a computer program I can run to model a turnstile antenna for 2m /
70 cm ?
//
Falconsat-3 reception, should i turn on or off the ?audio? filter for 9600
Baud G3RUH ( 3 kHz)
Pass band is about 8 kHz with doppler tracking - working dead on the bird
I need to loose this vertical antenna - it just sees the horizon
Andrew
------------------------------
Message: 4
Date: Mon, 23 Oct 2017 21:12:43 +1000
From: <vk4tec@xxxxxxxxxxxxx.xxx>
To: "AMSAT" <amsat-bb@xxxxx.xxx>
Cc: 'Australian APRS Users' <ozaprs@xxxx.xxx.xx>
Subject: [amsat-bb] AirSpy Mini VS Funcube Dongle
Message-ID: <000001d34bef$dc17ca90$94475fb0$@xxxxxxxxxxxxx.xxx>
Content-Type: text/plain; charset="us-ascii"
Signal Comparison of AirSpy Mini vs Funcube Dongle PRO+
432.440 MHz
AirSpy Mini SDR 3/6 MHz
IF = 9
Mixer = Max 15
LNA = Max 15
Noise Floor -80 db
Signal Peak -50 db
S/N = 30dB
Funcube Dongle Pro + 192 KHz
LNA = Yes
Mixer = Yes
IF Gain = 11
Noise Floor -80 dB
Signal Peak = -35 dB
S/N = 45 db
RTL-SDR Dongle 2 MHz
Did not compare at all - Noise Floor -50 dB / Bad S/N
HackRF
Did not compare - was more a GNUradio Tool
The Funcube Dongle was 15 dB better than the AirSpy Mini
But remember Fincude SBR is 192 kHz and AirSpy Mini is 3 or 6 MHz
Best: Funcube Dongle Pro +
Andrew
------------------------------
Message: 5
Date: Mon, 23 Oct 2017 03:20:45 +1000
From: <vk4tec@xxxxxxxxxxxxx.xxx>
To: "AMSAT" <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] How to get SDR# to doppler correct SDR from
Orbitron
Message-ID: <013f01d34b5a$1a861110$4f923330$@xxxxxxxxxxxxx.xxx>
Content-Type: text/plain; charset="us-ascii"
Here is a how to to get Falsconsat-3 with a Airspy Mini
1. Download and install orbitron as usual
2. Download the My DDE client from the orbitron site
3. Place the MyDDE files into the orbitron directory
4. Download an older version of SDR# < 1400
5. Download the satellite tracker plugin and place in sdr# directory
6. Modify the orbitron config file
7. Modify the Plugins.xml for SDR#
Run up orbitron and sdr# ( old version ) and select "SDRSharp" from the
Radio / Rotor DDE selection.
The key is to get an OLD version of SDR#
8. Install Virtual Audio Cable
9. Install UZ7HO High Speed 9600 Baud decoder ( Enable KISS )
10. Run your own program to take in the KISS ( I use UI-VIEW )
Andrew
------------------------------
Message: 6
Date: Mon, 23 Oct 2017 06:51:15 -0500
From: "Alan" <wa4sca@xxxxx.xxx>
To: "'AMSAT'" <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] How to get SDR# to Doppler correct SDR from
Orbitron
Message-ID: <000001d34bf5$3b739e60$b25adb20$@xxxxx.xxx>
Content-Type: text/plain; charset="us-ascii"
Another approach is to use the DDE Tracker Client
http://www.satsignal.eu/software/DDETracker.html
There are multiple versions, depending on the SDR# release, and the latest
versions of SDR# are supported.
73s,
Alan
WA4SCA
<-----Original Message-----
<From: AMSAT-BB [mailto:amsat-bb-bounces@xxxxx.xxxx On Behalf Of
<vk4tec@xxxxxxxxxxxxx.xxx
<Sent: Sunday, October 22, 2017 12:21 PM
<To: AMSAT <amsat-bb@xxxxx.xxx>
<Subject: [amsat-bb] How to get SDR# to doppler correct SDR from Orbitron
<
<Here is a how to to get Falsconsat-3 with a Airspy Mini
<
<
<
<1. Download and install orbitron as usual
<2. Download the My DDE client from the orbitron site
<3. Place the MyDDE files into the orbitron directory
<4. Download an older version of SDR# < 1400
<5. Download the satellite tracker plugin and place in sdr# directory
<6. Modify the orbitron config file
<7. Modify the Plugins.xml for SDR#
<
<
<
<Run up orbitron and sdr# ( old version ) and select "SDRSharp" from the
<Radio / Rotor DDE selection.
<
<
<
<The key is to get an OLD version of SDR#
<
<
<
<8. Install Virtual Audio Cable
<9. Install UZ7HO High Speed 9600 Baud decoder ( Enable KISS )
<10. Run your own program to take in the KISS ( I use UI-VIEW )
<
<
<
<
<
<Andrew
<
<
<
<_______________________________________________
<Sent via AMSAT-BB@xxxxx.xxx. 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: http://www.amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 7
Date: Mon, 23 Oct 2017 10:24:28 -0400
From: Paul Stoetzer <n8hm@xxxx.xxx>
To: "amsat-bb@xxxxx.xxxx <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] PJ4/NA2AA
Message-ID:
<CABzOSOra+aHS0GVO2a5i33gaWSMQyD-kWrLYZZq++K80-QvmNQ@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset="UTF-8"
Good morning,
PJ4/NA2AA was active this morning from Bonaire on the XW-2s and FO-29.
This is the first satellite operation from PJ4 since the dissolution
of the Netherlands Antilles on 10/10/10, so this is a new DXCC for
everyone.
He will be there until November 3rd and has said he plans to be quite
active, so be sure to get on and work them. Note that he has expressed
a dislike for the operator behavior on FM satellites, so if he does
get on an FM pass, please play nice!
73,
Paul, N8HM
------------------------------
Message: 8
Date: Mon, 23 Oct 2017 10:55:56 -0500
From: Mike Thompson <zryder94@xxxxx.xxx>
To: Andrew Rich <vk4tec@xxxxxxxxxxxxx.xxx>
Cc: AMSAT <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] Turnstile Antenna Design
Message-ID:
<CAGD5MUH5N6wZR0RKO9J+xn_3UvbUCt9tww05cD-G6Cfbj_8PAw@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset="UTF-8"
How would you guy's think this would compare to an Eggbeater? My assumption
is that one could install reflectors below to give a similar pattern to an
eggbeater, correct?
On Mon, Oct 23, 2017 at 4:56 AM, <vk4tec@xxxxxxxxxxxxx.xxx> wrote:
> http://59.167.159.165/satreporter/turnstile.pdf
>
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. 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: http://www.amsat.org/mailman/listinfo/amsat-bb
>
------------------------------
Message: 9
Date: Mon, 23 Oct 2017 21:53:32 +1000
From: <vk4tec@xxxxxxxxxxxxx.xxx>
To: "'AMSAT'" <amsat-bb@xxxxx.xxx>
Cc: 'Australian APRS Users' <ozaprs@xxxx.xxx.xx>
Subject: Re: [amsat-bb] AirSpy Mini VS Funcube Dongle
Message-ID: <001701d34bf5$8efe5660$acfb0320$@xxxxxxxxxxxxx.xxx>
Content-Type: text/plain; charset="us-ascii"
How can I get rid of this DC spike in the Funcube Dongle ?
Andrew
-----Original Message-----
From: AMSAT-BB [mailto:amsat-bb-bounces@xxxxx.xxxx On Behalf Of
vk4tec@xxxxxxxxxxxxx.xxx
Sent: Monday, 23 October 2017 9:13 PM
To: AMSAT <amsat-bb@xxxxx.xxx>
Cc: 'Australian APRS Users' <ozaprs@xxxx.xxx.xx>
Subject: [amsat-bb] AirSpy Mini VS Funcube Dongle
Signal Comparison of AirSpy Mini vs Funcube Dongle PRO+
432.440 MHz
AirSpy Mini SDR 3/6 MHz
IF = 9
Mixer = Max 15
LNA = Max 15
Noise Floor -80 db
Signal Peak -50 db
S/N = 30dB
Funcube Dongle Pro + 192 KHz
LNA = Yes
Mixer = Yes
IF Gain = 11
Noise Floor -80 dB
Signal Peak = -35 dB
S/N = 45 db
RTL-SDR Dongle 2 MHz
Did not compare at all - Noise Floor -50 dB / Bad S/N
HackRF
Did not compare - was more a GNUradio Tool
The Funcube Dongle was 15 dB better than the AirSpy Mini
But remember Fincude SBR is 192 kHz and AirSpy Mini is 3 or 6 MHz
Best: Funcube Dongle Pro +
Andrew
_______________________________________________
Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available to all
interested persons worldwide without requiring membership. Opinions
expressed are solely those of the author, and do not reflect the official
views of AMSAT-NA.
Not an AMSAT-NA member? Join now to support the amateur satellite program!
Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 10
Date: Tue, 24 Oct 2017 02:41:20 +1000
From: <vk4tec@xxxxxxxxxxxxx.xxx>
To: "AMSAT" <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] FunCube dongle DC offset
Message-ID: <006501d34c1d$c31481e0$493d85a0$@xxxxxxxxxxxxx.xxx>
Content-Type: text/plain; charset="us-ascii"
Has anyone managed to reduce the DC offset on the FCD ?
It appears as a spike right where I don't want it
Andrew
------------------------------
Message: 11
Date: Mon, 23 Oct 2017 15:58:34 -0400
From: Paul Andrews <w2hro.fn20@xxxxx.xxx>
To: Andrew Rich <vk4tec@xxxxxxxxxxxxx.xxx>
Cc: AMSAT <amsat-bb@xxxxx.xxx>, Australian APRS Users
<ozaprs@xxxx.xxx.xx>
Subject: Re: [amsat-bb] AirSpy Mini VS Funcube Dongle
Message-ID:
<CAOsf+NSacKfBb4hMZ22VVx2i2iomjCsLEEL=sXMEw7gmgKaSkw@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset="UTF-8"
AMSAT Community,
I have the same problem and would really appreciate any information on
a fix. I have read about the origin of the DC Offset problem but I
don't see any way to correct the problem.
I'm a happy owner of three (3) Funcube Dongles. One of the best
values in SDR equipment.
73 - Paul - W2HRO
On Mon, Oct 23, 2017 at 7:53 AM, <vk4tec@xxxxxxxxxxxxx.xxx> wrote:
> How can I get rid of this DC spike in the Funcube Dongle ?
>
> Andrew
>
> -----Original Message-----
> From: AMSAT-BB [mailto:amsat-bb-bounces@xxxxx.xxxx On Behalf Of
> vk4tec@xxxxxxxxxxxxx.xxx
> Sent: Monday, 23 October 2017 9:13 PM
> To: AMSAT <amsat-bb@xxxxx.xxx>
> Cc: 'Australian APRS Users' <ozaprs@xxxx.xxx.xx>
> Subject: [amsat-bb] AirSpy Mini VS Funcube Dongle
>
> Signal Comparison of AirSpy Mini vs Funcube Dongle PRO+
>
>
>
> 432.440 MHz
>
>
>
> AirSpy Mini SDR 3/6 MHz
>
>
>
> IF = 9
>
> Mixer = Max 15
>
> LNA = Max 15
>
>
>
> Noise Floor -80 db
>
> Signal Peak -50 db
>
> S/N = 30dB
>
>
>
> Funcube Dongle Pro + 192 KHz
>
>
>
> LNA = Yes
>
> Mixer = Yes
>
> IF Gain = 11
>
>
>
> Noise Floor -80 dB
>
> Signal Peak = -35 dB
>
> S/N = 45 db
>
>
>
> RTL-SDR Dongle 2 MHz
>
>
>
> Did not compare at all - Noise Floor -50 dB / Bad S/N
>
>
>
> HackRF
>
>
>
> Did not compare - was more a GNUradio Tool
>
>
>
> The Funcube Dongle was 15 dB better than the AirSpy Mini
>
>
>
> But remember Fincude SBR is 192 kHz and AirSpy Mini is 3 or 6 MHz
>
>
>
> Best: Funcube Dongle Pro +
>
>
>
> Andrew
>
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. 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: http://www.amsat.org/mailman/listinfo/amsat-bb
>
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. 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: http://www.amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 12
Date: Mon, 23 Oct 2017 16:25:59 -0400
From: Paul Stoetzer <n8hm@xxxx.xxx>
To: Paul Andrews <w2hro.fn20@xxxxx.xxx>
Cc: Australian APRS Users <ozaprs@xxxx.xxx.xx>, AMSAT
<amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] AirSpy Mini VS Funcube Dongle
Message-ID:
<CABzOSOrFreHixSSSVhq9z1ahZhJHzv1DdH+2g8Au-VLj56KYjQ@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset="UTF-8"
Most SDR programs have an option to eliminiate the DC spike. I've been
using Gqrx and can't specifically remember how to do it in others, but
in Gqrx it's right on the receiver options tab.
73,
Paul, N8HM
On Mon, Oct 23, 2017 at 3:58 PM, Paul Andrews <w2hro.fn20@xxxxx.xxx> wrote:
> AMSAT Community,
>
> I have the same problem and would really appreciate any information on
> a fix. I have read about the origin of the DC Offset problem but I
> don't see any way to correct the problem.
>
> I'm a happy owner of three (3) Funcube Dongles. One of the best
> values in SDR equipment.
>
> 73 - Paul - W2HRO
>
>
>
> On Mon, Oct 23, 2017 at 7:53 AM, <vk4tec@xxxxxxxxxxxxx.xxx> wrote:
>> How can I get rid of this DC spike in the Funcube Dongle ?
>>
>> Andrew
>>
>> -----Original Message-----
>> From: AMSAT-BB [mailto:amsat-bb-bounces@xxxxx.xxxx On Behalf Of
>> vk4tec@xxxxxxxxxxxxx.xxx
>> Sent: Monday, 23 October 2017 9:13 PM
>> To: AMSAT <amsat-bb@xxxxx.xxx>
>> Cc: 'Australian APRS Users' <ozaprs@xxxx.xxx.xx>
>> Subject: [amsat-bb] AirSpy Mini VS Funcube Dongle
>>
>> Signal Comparison of AirSpy Mini vs Funcube Dongle PRO+
>>
>>
>>
>> 432.440 MHz
>>
>>
>>
>> AirSpy Mini SDR 3/6 MHz
>>
>>
>>
>> IF = 9
>>
>> Mixer = Max 15
>>
>> LNA = Max 15
>>
>>
>>
>> Noise Floor -80 db
>>
>> Signal Peak -50 db
>>
>> S/N = 30dB
>>
>>
>>
>> Funcube Dongle Pro + 192 KHz
>>
>>
>>
>> LNA = Yes
>>
>> Mixer = Yes
>>
>> IF Gain = 11
>>
>>
>>
>> Noise Floor -80 dB
>>
>> Signal Peak = -35 dB
>>
>> S/N = 45 db
>>
>>
>>
>> RTL-SDR Dongle 2 MHz
>>
>>
>>
>> Did not compare at all - Noise Floor -50 dB / Bad S/N
>>
>>
>>
>> HackRF
>>
>>
>>
>> Did not compare - was more a GNUradio Tool
>>
>>
>>
>> The Funcube Dongle was 15 dB better than the AirSpy Mini
>>
>>
>>
>> But remember Fincude SBR is 192 kHz and AirSpy Mini is 3 or 6 MHz
>>
>>
>>
>> Best: Funcube Dongle Pro +
>>
>>
>>
>> Andrew
>>
>> _______________________________________________
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all
>> interested persons worldwide without requiring membership. Opinions
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>> views of AMSAT-NA.
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>>
>> _______________________________________________
>> Sent via AMSAT-BB@xxxxx.xxx. 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: http://www.amsat.org/mailman/listinfo/amsat-bb
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. 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: http://www.amsat.org/mailman/listinfo/amsat-bb
------------------------------
Subject: Digest Footer
_______________________________________________
Sent via amsat-bb@xxxxx.xxx.
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 member? Join now to support the amateur satellite program!
http://www.amsat.org/mailman/listinfo/amsat-bb
------------------------------
End of AMSAT-BB Digest, Vol 12, Issue 267
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