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CX2SA > SATDIG 16.06.16 23:37l 750 Lines 27646 Bytes #999 (0) @ WW
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From: CX2SA@CX2SA.SAL.URY.SOAM
To : SATDIG@WW
Today's Topics:
1. Re: SatPC32 (Jeff Griffin)
2. Re: Field day power from BEV? (Joe)
3. RTL-SDR downlink (bruisedreed@xxxx.xxxx
4. Re: Field day power from BEV? (Peter Laws)
5. Re: Field day power from BEV? (Farrell Winder)
6. Phase 4B (Robert McGwier)
7. Re: [Video] Seven SO-50 Contacts in 90 Seconds
(Kevin Muenzler, WB5RUE)
8. Re: [Video] Seven SO-50 Contacts in 90 Seconds (John Brier)
9. ARISS Radios OFF June 17-19 (JoAnne Maenpaa)
10. "Only Half of the CubeSats Deployed into Space Work" (M5AKA)
11. Re: RTL-SDR downlink (Patrick STODDARD (WD9EWK/VA7EWK))
12. Re: RTL-SDR downlink (Peter Laws)
13. Re: RTL-SDR downlink (Jim Jerzycke)
----------------------------------------------------------------------
Message: 1
Date: Thu, 16 Jun 2016 08:40:12 -0400
From: "Jeff Griffin" <kb2m@xxxx.xxx>
To: "'Brad Hyde'" <W5BK@xxxx.xxx>, <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] SatPC32
Message-ID: <095801d1c7cc$3a22f3c0$ae68db40$@xxx>
Content-Type: text/plain; charset="us-ascii"
I installed SatPC32 under WIN10 with no issues. The only thing I can think
of is you have to right click on the zipped install file, unzip into a
directory, AND then right click on the setup.exe and run as administrator. I
think Erich mentions that in his install notes...
73 Jeff kb2m
-----Original Message-----
From: AMSAT-BB [mailto:amsat-bb-bounces@xxxxx.xxxx On Behalf Of Brad Hyde
Sent: Wednesday, June 15, 2016 4:19 PM
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] SatPC32
Hello all,
I was wondering if anyone else has tried to download SatPC32 under Windows
10? I have been trying for 2 days now. Windows 10 says I don't have
permission. So, I activate the administrator account and try it that way.
Same issue. So, I go into Windows security and give the administrator all
privileges. Still won't work. Keeps telling me I don't have permission to
install software for other users. I am not impressed with W10 at this
point..
Thanks for any advice.
Brad
W5BK
_______________________________________________
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: 2
Date: Thu, 16 Jun 2016 08:06:24 -0500
From: Joe <nss@xxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: Re: [amsat-bb] Field day power from BEV?
Message-ID: <d824fa0d-6cb2-2d0f-543a-c7a54f26358e@xxx.xxx>
Content-Type: text/plain; charset=utf-8; format=flowed
Wow, am I reading that right?
If all contacts are made using a power of 5 Watts or less, but the power
source is from a commercial main or from a motor-driven generator, the power
multiplier is 2.
and
If any or all contacts are made using an output power up to 150 Watts or
less, the power multiplier is 2
That can't be right.
Joe WB9SBD
Sig
The Original Rolling Ball Clock
Idle Tyme
Idle-Tyme.com
http://www.idle-tyme.com
On 6/15/2016 11:13 PM, KK5DO wrote:
> You can operate under whichever class fits your power source. Here is what
the ARRL says about the power multiplier.
> 73...bruce
>
> 7.2. Power multipliers: The power multiplier that applies is determined by
the highest power output of any of the transmitters used during the Field
Day operation. 7.2.1. If all contacts are made using a power of 5 Watts or
less and
> if a power source other than commercial mains or motor-driven generator
is used (batteries, solar cells, water-driven generator), the power
multiplier is 5 (five). 7.2.2. If all contacts are made using a power of 5
Watts or less, but the power source is from a commercial main or from a
motor-driven generator, the power multiplier is 2. If batteries are charged
during the Field Day period using commercial mains or a motor-driven
generator the power multiplier is 2 (two). 7.2.3. If any or all contacts are
made using an output power up to 150 Watts or less, the power multiplier is
2 (two). 7.2.4. If any or all contacts are made using an output power
greater than 150 Watts, the power multiplier is 1 (one). 7.2.5. The power
multiplier for an entry is determined by the maximum output power used by
any transmitter used to complete any contact during the event. (Example: a
group has one QRP station running 3 Watts and a second station running 100
Watts, the power multiplier of 2
applies to all contacts made by the entire operation).
>
> From: Greg D <ko6th.greg@xxxxx.xxx>
> To: Amsat BB <AMSAT-BB@xxxxx.xxx>
> Sent: Wednesday, June 15, 2016 10:47 PM
> Subject: [amsat-bb] Field day power from BEV?
>
> Hi folks,
>
> Every year there's always someone with an off-the-wall question about
> the Field Day rules. Not hearing one yet, it might as well be my turn...
>
> There are different station classifications based on your power source.
> What class is a station that gets its power from a Battery Electric
> Vehicle (one with battery only, no gas engine), for example, if I run my
> rig from the car's 12v Accessory outlet?
>
> Class-C covers a currently-traditional (ICE) car, one with a combustion
> engine driven generator (alternator) backing up the car's battery.
>
> My car has no such generator, just a really big battery (57kw). If I
> park the car and run a 12v cable to the operating position at a nearby
> picnic bench, and keep to 5 watts or less, am I Class A Battery? What
> if higher than 5 watts?
>
> Puzzled,
>
> Greg KO6TH
>
> _______________________________________________
> 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: 3
Date: Thu, 16 Jun 2016 14:30:44 GMT
From: "bruisedreed@xxxx.xxxx <bruisedreed@xxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] RTL-SDR downlink
Message-ID: <20160616.103044.19144.0@xxxxxxxxx.xxx.xxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
Hello all! Been lurking a while here and just wanted to say hi and thanks
to everyone. Just started working the birds. VERY limited success so far on
the linear transponders. Limited budget leads me to either have to run in
half duplex (obviously not preferred) or come up with another low cost
receiving option. I bought an RTL-SDR to see if it could be any help. I have
to say I really like this little receiver. It’s a little buggy
figuring things out but it receives really pretty well…UNTIL I try to
receive CW and SSB on the transponders. I have no problem receiving FM
repeaters and simplex and have monitored a few SO50 passes with it no
problem, but for some reason I’m not hearing the same signals I can
hear on the receiver of my FT100 with the EXACT same antenna. I A/B them and
have nothing on the SDR. Is anyone using one of these? I am probably missing
something simple. When I started receiving HF I couldn’t make it work
until I figured out I had
to change the sampeling in the setup to direct from quadrature…only
learned that through a forum and I assume something like that will make the
thing come to life. Lack of documentation on some of these things is kind of
a pain. Thanks in advance for any help you can offer and my apologies to
anyone I have frustrated working half duplex! I will figure out what
I’m doing!
____________________________________________________________
Los Angeles Post
This Father and Son Took the Same Photo 28 Years in a Row, Last One is ...
http://thirdpartyoffers.juno.com/TGL3131/5762b832d809e38323b6ast03vuc
------------------------------
Message: 4
Date: Thu, 16 Jun 2016 10:22:52 -0500
From: Peter Laws <plaws0@xxxxx.xxx>
To: AMSAT-BB <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] Field day power from BEV?
Message-ID:
<CANVAiQ_p0_0-38=u1CSfOOURmSLG4O=mVnqOGEADbHWSAZwHHw@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
On Thu, Jun 16, 2016 at 8:06 AM, Joe <nss@xxx.xxx> wrote:
> If all contacts are made using a power of 5 Watts or less, but the power
> source is from a commercial main or from a motor-driven generator, the power
> multiplier is 2.
>
>
> and
>
>
> If any or all contacts are made using an output power up to 150 Watts or
> less, the power multiplier is 2
>
> That can't be right.
The multiplier is 2 if your highest [powered station puts out 150 W or less.
The multiplier is 5 if your highest [powered station puts out 5 W or
less UNLESS you are powering it from commercial power or an engine
generator.
Seems clear to me.
http://www.arrl.org/files/file/Field-Day/2016/2016%20Rules.pdf
7. Scoring:
Scores are based on the total number of QSO points times the power
multiplier corresponding to the highest power level under which any
contact was made during the Field Day period plus the bonus points.
7.2. Power multipliers: The power multiplier that applies is
determined by the highest power output of any of the transmitters used
during the Field Day operation.
7.2.1. If all contacts are made using a power of 5 Watts or less and
if a power source other than commercial mains or motor-driven
generator is used (batteries, solar cells, water-driven generator),
the power multiplier is 5 (five).
7.2.2. If all contacts are made using a power of 5 Watts or less, but
the power source is from a commercial main or from a motor-driven
generator, the power multiplier is 2. If batteries are charged during
the Field Day period using commercial mains or a motor-driven
generator the power multiplier is 2 (two).
7.2.3. If any or all contacts are made using an output power up to 150
Watts or less, the power multiplier is 2 (two).
7.2.4. If any or all contacts are made using an output power greater
than 150 Watts, the power multiplier is 1 (one).
7.2.5. The power multiplier for an entry is determined by the maximum
output power used by any transmitter used to complete any contact
during the event. (Example: a group has one QRP station running 3
Watts and a second station running 100 Watts, the power multiplier of
2 applies to all contacts made by the entire operation).
--
Peter Laws | N5UWY | plaws plaws net | Travel by Train!
------------------------------
Message: 5
Date: Thu, 16 Jun 2016 12:55:47 -0400
From: Farrell Winder <fwinder@xxxx.xxx>
To: Peter Laws <plaws0@xxxxx.xxx>
Cc: AMSAT-BB <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] Field day power from BEV?
Message-ID: <548DBE20-2BB4-43D1-A411-84F8D70B8E54@xxxx.xxx>
Content-Type: text/plain; charset=us-ascii
Sent from my iPhone
> On Jun 16, 2016, at 11:22 AM, Peter Laws <plaws0@xxxxx.xxx> wrote:
>
>> On Thu, Jun 16, 2016 at 8:06 AM, Joe <nss@xxx.xxx> wrote:
>> If all contacts are made using a power of 5 Watts or less, but the power
>> source is from a commercial main or from a motor-driven generator, the
power
>> multiplier is 2.
>>
>>
>> and
>>
>>
>> If any or all contacts are made using an output power up to 150 Watts or
>> less, the power multiplier is 2
>>
>> That can't be right.
>
>
> The multiplier is 2 if your highest [powered station puts out 150 W or less.
> The multiplier is 5 if your highest [powered station puts out 5 W or
> less UNLESS you are powering it from commercial power or an engine
> generator.
>
> Seems clear to me.
>
> http://www.arrl.org/files/file/Field-Day/2016/2016%20Rules.pdf
>
> 7. Scoring:
> Scores are based on the total number of QSO points times the power
> multiplier corresponding to the highest power level under which any
> contact was made during the Field Day period plus the bonus points.
>
> 7.2. Power multipliers: The power multiplier that applies is
> determined by the highest power output of any of the transmitters used
> during the Field Day operation.
>
> 7.2.1. If all contacts are made using a power of 5 Watts or less and
> if a power source other than commercial mains or motor-driven
> generator is used (batteries, solar cells, water-driven generator),
> the power multiplier is 5 (five).
>
> 7.2.2. If all contacts are made using a power of 5 Watts or less, but
> the power source is from a commercial main or from a motor-driven
> generator, the power multiplier is 2. If batteries are charged during
> the Field Day period using commercial mains or a motor-driven
> generator the power multiplier is 2 (two).
>
> 7.2.3. If any or all contacts are made using an output power up to 150
> Watts or less, the power multiplier is 2 (two).
>
> 7.2.4. If any or all contacts are made using an output power greater
> than 150 Watts, the power multiplier is 1 (one).
>
> 7.2.5. The power multiplier for an entry is determined by the maximum
> output power used by any transmitter used to complete any contact
> during the event. (Example: a group has one QRP station running 3
> Watts and a second station running 100 Watts, the power multiplier of
> 2 applies to all contacts made by the entire c
> --
> Peter Laws | N5UWY | plaws plaws net | Travel by Train!
> _______________________________________________
> 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: 6
Date: Thu, 16 Jun 2016 13:15:58 -0400
From: Robert McGwier <rwmcgwier@xxxxx.xxx>
To: amsat bb <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Phase 4B
Message-ID:
<CA+K5gzfSOsu+gKNJsycxbr0Zw91GeJoJj6MwZoigizvv=hT=Vg@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
Neglect the "First geosynchronous" article. I did not write it and it is
like all mistakes, firmly in archives and not fixable.
http://www.hume.vt.edu/geo/
73s
Bob
--
Bob McGwier
Founder, Federated Wireless, Inc
Founder and Technical Advisor, HawkEye 360, Inc
Research Professor Virginia Tech
Chief Scientist: The Ted and Karyn Hume Center for National Security and
Technology
Senior Member IEEE, Facebook: N4HYBob, ARS: N4HY
Faculty Advisor Virginia Tech Amateur Radio Assn. (K4KDJ)
Director of AMSAT
------------------------------
Message: 7
Date: Thu, 16 Jun 2016 12:46:01 -0500
From: "Kevin Muenzler, WB5RUE" <kevin@xxxxxxxxxxxxxxxxxxxxx.xxx>
To: "'AMSAT BB'" <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] [Video] Seven SO-50 Contacts in 90 Seconds
Message-ID: <000901d1c7f6$f33bcd80$d9b36880$@xxx>
Content-Type: text/plain; charset="us-ascii"
Really nicely done video.
I like the multi-view panels, very nice touch. What satellite tracking
software do you use?
Kevin, WB5RUE
EL09uf (or EL09vf, depending on where I stand in my yard)
I am Voltohm of Borg! Resistance is E/I, you will be attenuated!
-----Original Message-----
From: AMSAT-BB [mailto:amsat-bb-bounces@xxxxx.xxxx On Behalf Of John Brier
Sent: Wednesday, June 15, 2016 4:51 PM
To: AMSAT BB
Subject: [amsat-bb] [Video] Seven SO-50 Contacts in 90 Seconds
https://www.youtube.com/watch?v=bcTbx-4IwV0
73, John Brier KG4AKV
_______________________________________________
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: 8
Date: Thu, 16 Jun 2016 14:24:40 -0400
From: John Brier <johnbrier@xxxxx.xxx>
To: AMSAT BB <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] [Video] Seven SO-50 Contacts in 90 Seconds
Message-ID:
<CALn0fKMj0NRsr0QmjceLTOwKa1tqxnSM6EbbVAgrKU5K4nUJdA@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
Thanks Kevin,
I use Orbitron currently but will probably switch to/also use SatPC32
eventually now that I have had it demoed to me by K8YSE at the Dayton
Hamvention. Originally I found it too complicated to use.
John KG4AKV
On Thu, Jun 16, 2016 at 1:46 PM, Kevin Muenzler, WB5RUE
<kevin@xxxxxxxxxxxxxxxxxxxxx.xxx> wrote:
> Really nicely done video.
>
> I like the multi-view panels, very nice touch. What satellite tracking
> software do you use?
>
> Kevin, WB5RUE
> EL09uf (or EL09vf, depending on where I stand in my yard)
>
> I am Voltohm of Borg! Resistance is E/I, you will be attenuated!
>
> -----Original Message-----
> From: AMSAT-BB [mailto:amsat-bb-bounces@xxxxx.xxxx On Behalf Of John Brier
> Sent: Wednesday, June 15, 2016 4:51 PM
> To: AMSAT BB
> Subject: [amsat-bb] [Video] Seven SO-50 Contacts in 90 Seconds
>
> https://www.youtube.com/watch?v=bcTbx-4IwV0
>
> 73, John Brier KG4AKV
> _______________________________________________
> 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: 9
Date: Thu, 16 Jun 2016 13:29:35 -0500
From: "JoAnne Maenpaa" <k9jkm@xxxxxxx.xxx>
To: <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] ARISS Radios OFF June 17-19
Message-ID: <006d01d1c7fd$09037590$1b0a60b0$@xxx>
Content-Type: text/plain; charset="windows-1255"
Relayed from Twitter so amsat-bb folks see it:
AMSAT-UK Retweeted
ISS Ham ?@xxxxxxxx
#ARISS radios will power off on June 17 at 22:25 UTC for Soyuz return with
@xxxxxxxxxxxxxx and @xxxxxxxxx . Back on June 19 at 10:30 UTC.
--
73 de JoAnne K9JKM
k9jkm@xxxxx.xxx
------------------------------
Message: 10
Date: Thu, 16 Jun 2016 18:54:05 +0000 (UTC)
From: M5AKA <m5aka@xxxxx.xx.xx>
To: AMSAT BB <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] "Only Half of the CubeSats Deployed into Space
Work"
Message-ID:
<528856269.7643560.1466103245274.JavaMail.yahoo@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
ARRL story quotes NASA engineer Joe Pellegrino as saying "Only Half of the
CubeSats Deployed into Space Work" - is the failure rate really that
high?http://www.arrl.org/news/view/stmsat-1-youngsters-told-only-half-of-the-c
ubesats-deployed-into-space-work
I've certainly noticed that a number of ISS deployed CubeSats using amateur
frequencies which were subject to delays in the initial launch and then more
delays before actual deployment have failed but it certainly didn't seem to
be as high as 50%
But most ISS CubeSat deployments are not on amateur frequencies e.g. over
100 Planet Labs Dove CubeSats have been deployed. Was the NASA engineer
saying that half of Planet Labs satellites failed to work?
73 Trevor M5AKA
------------------------------
Message: 11
Date: Thu, 16 Jun 2016 20:22:58 +0000
From: "Patrick STODDARD (WD9EWK/VA7EWK)" <amsat-bb@xxxxxx.xxx>
To: "amsat-bb@xxxxx.xxxx <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] RTL-SDR downlink
Message-ID:
<CAN6TEUch5CRAOX+RintjDuQGmh2WnsU53UZa3zhttpCRJtPUMg@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
Hi, (name or call?)!
The inexpensive RTL-SDR dongles are a great way to get started with
SDR receivers. For amateur satellite work, other than the ISS and maybe
AO-85, they have a couple of significant drawbacks...
1. These dongles were designed to be TV receivers, working with
signals much stronger than we have from our satellites or even the
ISS ham station.
2. These dongles lack front-end filtering. This means that there could
be a strong signal near you that swamps the receiver that wipes out
what you're trying to hear. If you are trying to work satellites
full-duplex, it is possible that your transmitter will shut down
the dongle until you end your transmission. This was a problem I
experienced early on when I tried using one of these dongles as
my downlink receiver, and quickly moved on to something else.
Unfortunately there isn't anything in the middle ground between these
dongles and devices like the SDRplay (sold by HRO in the US for $149)
or the FUNcube Dongle Pro+ (sold by its UK manufacturer for around
$200 depending on exchange rates, which includes FedEx next-day
shipping from England to most addresses in the continental USA). Both
of these devices do well as the downlink receiver for working
satellites. Both come with front-end filtering that the RTL-SDR
dongles lack, and still have sensitive receivers. The SDRplay
has a low-noise amplifier that is engaged when receiving at VHF or
higher, but you can reduce the amount of gain from the built-in LNA.
For my work, I keep that gain reduction value set to 0, so I have
maximum gain to hear the downlinks.
Good luck, and 73!
Patrick WD9EWK/VA7EWK
http://www.wd9ewk.net/
Twitter: @xxxxxx
On Thu, Jun 16, 2016 at 2:30 PM, bruisedreed@xxxx.xxx <bruisedreed@xxxx.xxx>
wrote:
> Hello all! Been lurking a while here and just wanted to say hi and thanks
> to everyone. Just started working the birds. VERY limited success so far
> on the linear transponders. Limited budget leads me to either have to run
> in half duplex (obviously not preferred) or come up with another low cost
> receiving option. I bought an RTL-SDR to see if it could be any help. I
> have to say I really like this little receiver. It’s a little buggy
> figuring things out but it receives really pretty well…UNTIL I try
> to receive CW and SSB on the transponders. I have no problem receiving FM
> repeaters and simplex and have monitored a few SO50 passes with it no
> problem, but for some reason I’m not hearing the same signals I can
> hear on the receiver of my FT100 with the EXACT same antenna. I A/B them
> and have nothing on the SDR. Is anyone using one of these? I am probably
> missing something simple. When I started receiving HF I couldn’t make
> it work until I figured out I had
> to change the sampeling in the setup to direct from
> quadrature…only learned that through a forum and I assume something
> like that will make the thing come to life. Lack of documentation on some
> of these things is kind of a pain. Thanks in advance for any help you can
> offer and my apologies to anyone I have frustrated working half duplex! I
> will figure out what I’m doing!
> ____________________________________________________________
>
------------------------------
Message: 12
Date: Thu, 16 Jun 2016 15:33:32 -0500
From: Peter Laws <plaws0@xxxxx.xxx>
To: "amsat-bb@xxxxx.xxxx <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] RTL-SDR downlink
Message-ID:
<CANVAiQ97NMRD76+yXC0aTM-_Qd0fp-Dh5Y=KHjE9HRrTnyW6SA@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
On Thu, Jun 16, 2016 at 3:22 PM, Patrick STODDARD (WD9EWK/VA7EWK)
<amsat-bb@xxxxxx.xxx> wrote:
> Unfortunately there isn't anything in the middle ground between these
> dongles and devices like the
The $20 versions are well worth the effort if you've never played with
an SDR of any sort before. For satellite downlinks? Dunno, never
tried. Surely as you describe!
Has anyone done any kind of "shoot out" comparing the cheapos to the
real ones or even between the real ones (FCD, SDRPlay)? Before I
plunk down $200, I'd like to see what I'm getting ... over and above
what my $20 dongle can do, of course. :-) I read what you typed, but
I'd like to see numbers.
--
Peter Laws | N5UWY | plaws plaws net | Travel by Train!
------------------------------
Message: 13
Date: Thu, 16 Jun 2016 21:15:14 +0000
From: Jim Jerzycke <kq6ea@xxxxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: Re: [amsat-bb] RTL-SDR downlink
Message-ID: <576316E2.1010304@xxxxxxx.xxx>
Content-Type: text/plain; charset=windows-1252; format=flowed
I did some experimentation with the $20 dongle vs the FunCube dongle for
receiving weather satellites.
If you live in an RF dense area, like here in Southern California, they
BOTH benefit from having some front-end filtering added.
Other wise you have to turn the RF gain down quite a bit on both of them
to prevent 'break through' from strong signals that can be may MHz away
from your band of interest.
In my case, I used an SSB Electronik 2 Meter preamp with an old M2 2
Meter Eggbeater antenna. I could get reasonable copy above 10*~15*
elevation with just the dongle and antenna, but suffered from strong
signal break through. If I turned the RF gain down to where the
interfering signals no longer broke through, it cut my reception down to
maybe 25*~30* elevation.
With the SSB preamp and it's built-in helical filter, even operating at
137 MHz, the difference was staggering, and I could get good copy down
to 5* or so.
The only other SDR I played with for a while was the HackRF, which I
found to be unsuitable for what I was looking for. Despite the hype
behind it, it's still an 8-bit unit with limited dynamic range.
YMMV!
73, Jim KQ6EA
On 06/16/2016 08:33 PM, Peter Laws wrote:
> On Thu, Jun 16, 2016 at 3:22 PM, Patrick STODDARD (WD9EWK/VA7EWK)
> <amsat-bb@xxxxxx.xxx> wrote:
>> Unfortunately there isn't anything in the middle ground between these
>> dongles and devices like the
>
> The $20 versions are well worth the effort if you've never played with
> an SDR of any sort before. For satellite downlinks? Dunno, never
> tried. Surely as you describe!
>
> Has anyone done any kind of "shoot out" comparing the cheapos to the
> real ones or even between the real ones (FCD, SDRPlay)? Before I
> plunk down $200, I'd like to see what I'm getting ... over and above
> what my $20 dongle can do, of course. :-) I read what you typed, but
> I'd like to see numbers.
>
>
>
>
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End of AMSAT-BB Digest, Vol 11, Issue 193
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