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CX2SA > SATDIG 12.01.19 00:09l 903 Lines 30987 Bytes #999 (0) @ WW
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From: CX2SA@CX2SA.SAL.URY.SOAM
To : SATDIG@WW
Today's Topics:
1. Activating EM86 for the next week or so (Robert Bragg)
2. Re: Pass recording (Alex Free - N7AGF)
3. Re: Pass recording (John Brier)
4. Re: Pass recording (R.T.Liddy)
5. Re: Q: An easy way to turn paper logs to a logging program?
(Doug Phelps)
6. Re: Pass recording (Bryan Green)
7. G-5500 Az-El controller box (Joel Kandel)
8. Re: preliminary TLE data for NEXUS sat (jan-17) (Akira Kaneko)
9. Re: Pass recording (Peter Goodhall (2M0SQL))
10. Re: Protecting SDR (Ryan Noguchi)
11. Re: Protecting SDR (Paul Stoetzer)
----------------------------------------------------------------------
Message: 1
Date: Fri, 11 Jan 2019 13:50:28 -0500
From: Robert Bragg <airrj1@?????.???>
To: AMSAT <amsat-bb@?????.???>
Subject: [amsat-bb] Activating EM86 for the next week or so
Message-ID:
<CAJ9ASBFhRufTWJYvMPQLBOmGh-5TxN-XzfL54CYF6GCsk71ZEA@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
I will be staying in EM86 for the next week or so. I will be activating FM
birds very regularly and practicing my SSB satellites when I have time.
I plan to make a side trip to EM96 one evening at the beginning of the
week. I will post here when I have my plans.
Please let me know if you need either EM86 or 96 and I will see what we can
do to make a contact.
73
R.J.
WY7AA
------------------------------
Message: 2
Date: Fri, 11 Jan 2019 10:55:36 -0800
From: Alex Free - N7AGF <admin@????????.???>
Cc: AMSAT BB <amsat-bb@?????.???>
Subject: Re: [amsat-bb] Pass recording
Message-ID:
<CAG8VDhqLQor2FFAjPtPbF71_T82YyHu1TRF8bZ37brFa8vUmow@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
I use the auxiliary radio port on my radiosport headset to connect to my
Sony ICD-PX333, and I secure the recorder either in my breast pocket or
with velcro tape attached to the top of the headset itself. The Pro 7 from
Heil also has an aux port that works in the same manner.
On Fri, Jan 11, 2019 at 10:15 AM Robert Bragg <airrj1@?????.???> wrote:
> Yes, I am all portable operation with a D72A, and I feed that into the
> recorder and then listen through the recorder with earbuds. And if someone
> wants to listen, I have a splitter for an extra set of earbuds.
>
> On Fri, Jan 11, 2019 at 1:05 PM Burns Fisher <burns@??????.??> wrote:
>
> > Oh, so you listen to the pass through the recorder? That's a better idea
> > than mine of using a splitter.
> >
> > On Fri, Jan 11, 2019 at 1:03 PM Robert Bragg <airrj1@?????.???> wrote:
> >
> >> I second the Sony ICD-PX370. Got mine locally at Bust Buy and I have
> had
> >> very good luck with it. The good thing is that you cannot hear any
> audio
> >> in the earphones unless the unit is recording. The limits the chances
> of
> >> not getting the pass recorded. The only failure point that I have
> found is
> >> that if you are recording and you hit the 'pause' button, you can still
> >> hear audio without recording. So watch out for that. I have made
> hundreds
> >> of passes in the last year and never lost any audio yet.
> >>
> >> Good Luck.
> >> R.J.
> >> WY7AA
> >>
> >> On Fri, Jan 11, 2019 at 12:50 PM Burns Fisher <burns@??????.??> wrote:
> >>
> >>> I use a Sony ICD-PX370 with line-in connected to a splitter on the
> >>> earphone
> >>> jack. It does a really good job of recording, the batteries last a
> long
> >>> time (not rechargeable though), and you can download the file and
> listen
> >>> elsewhere.
> >>>
> >>> One source:
> >>>
> >>>
>
https://www.amazon.com/gp/product/B06XFTWCBJ/ref=oh_aui_search_asin_title?ie=U
TF8&psc=1
> >>>
> >>> 73
> >>>
> >>> Burns WB1FJ
> >>>
> >>> On Fri, Jan 11, 2019 at 12:44 PM Bob Hammond <propgrinder@?????.???>
> >>> wrote:
> >>>
> >>> > What method of recording do you all use for QSOs?
> >>> > I'm setting up my fixed base station and know from my handheld/Arrow
> >>> days
> >>> > that I cannot operate, talk, and write all at the same time with any
> >>> > accuracy.
> >>> >
> >>> > Bob
> >>> > W7OTJ
> >>> > DN17
> >>> > _______________________________________________
> >>> > 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:
> http://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: http://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: http://www.amsat.org/mailman/listinfo/amsat-bb
>
------------------------------
Message: 3
Date: Fri, 11 Jan 2019 14:04:16 -0500
From: John Brier <johnbrier@?????.???>
To: Alex Free - N7AGF <admin@????????.???>
Cc: AMSAT BB <amsat-bb@?????.???>
Subject: Re: [amsat-bb] Pass recording
Message-ID:
<CALn0fKNcTbwE7rrNket89_M1GYL2tWo_osoFSr9K6Dq7sXTXtw@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
+1 on monitoring the audio from the recorder and splitting it after the
recorder if you need to.
My old Olympus recorder (WS-822, not in production) only monitors the audio
when recording too. It's having issues though and I switched to my Zoom H1,
but it monitors the audio whether recording or not. I have missed recording
passes several times because of that.
73, John Brier KG4AKV
On Fri, Jan 11, 2019, 14:00 Alex Free - N7AGF <admin@????????.??? wrote:
> I use the auxiliary radio port on my radiosport headset to connect to my
> Sony ICD-PX333, and I secure the recorder either in my breast pocket or
> with velcro tape attached to the top of the headset itself. The Pro 7 from
> Heil also has an aux port that works in the same manner.
>
> On Fri, Jan 11, 2019 at 10:15 AM Robert Bragg <airrj1@?????.???> wrote:
>
> > Yes, I am all portable operation with a D72A, and I feed that into the
> > recorder and then listen through the recorder with earbuds. And if
> someone
> > wants to listen, I have a splitter for an extra set of earbuds.
> >
> > On Fri, Jan 11, 2019 at 1:05 PM Burns Fisher <burns@??????.??> wrote:
> >
> > > Oh, so you listen to the pass through the recorder? That's a better
> idea
> > > than mine of using a splitter.
> > >
> > > On Fri, Jan 11, 2019 at 1:03 PM Robert Bragg <airrj1@?????.???> wrote:
> > >
> > >> I second the Sony ICD-PX370. Got mine locally at Bust Buy and I have
> > had
> > >> very good luck with it. The good thing is that you cannot hear any
> > audio
> > >> in the earphones unless the unit is recording. The limits the chances
> > of
> > >> not getting the pass recorded. The only failure point that I have
> > found is
> > >> that if you are recording and you hit the 'pause' button, you can
> still
> > >> hear audio without recording. So watch out for that. I have made
> > hundreds
> > >> of passes in the last year and never lost any audio yet.
> > >>
> > >> Good Luck.
> > >> R.J.
> > >> WY7AA
> > >>
> > >> On Fri, Jan 11, 2019 at 12:50 PM Burns Fisher <burns@??????.??>
> wrote:
> > >>
> > >>> I use a Sony ICD-PX370 with line-in connected to a splitter on the
> > >>> earphone
> > >>> jack. It does a really good job of recording, the batteries last a
> > long
> > >>> time (not rechargeable though), and you can download the file and
> > listen
> > >>> elsewhere.
> > >>>
> > >>> One source:
> > >>>
> > >>>
> >
>
https://www.amazon.com/gp/product/B06XFTWCBJ/ref=oh_aui_search_asin_title?ie=U
TF8&psc=1
> > >>>
> > >>> 73
> > >>>
> > >>> Burns WB1FJ
> > >>>
> > >>> On Fri, Jan 11, 2019 at 12:44 PM Bob Hammond <propgrinder@?????.???>
> > >>> wrote:
> > >>>
> > >>> > What method of recording do you all use for QSOs?
> > >>> > I'm setting up my fixed base station and know from my
> handheld/Arrow
> > >>> days
> > >>> > that I cannot operate, talk, and write all at the same time with
> any
> > >>> > accuracy.
> > >>> >
> > >>> > Bob
> > >>> > W7OTJ
> > >>> > DN17
> > >>> > _______________________________________________
> > >>> > 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:
> > http://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:
> http://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: http://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: http://www.amsat.org/mailman/listinfo/amsat-bb
>
------------------------------
Message: 4
Date: Fri, 11 Jan 2019 19:19:03 +0000 (UTC)
From: "R.T.Liddy" <k8bl@?????????.???>
To: amsat-bb@?????.???? Bob Hammond <propgrinder@?????.???>
Subject: Re: [amsat-bb] Pass recording
Message-ID: <428303919.10205835.1547234343678@????.?????.???>
Content-Type: text/plain; charset=UTF-8
Bob,
I use a little Sony Digital Recorder. You can see it hanging around my
neck in a picture on my QRZ page. I put the mic in the earpiece of my
headphones and it picks up both sides of the QSOs. Later, I transcribe
the contacts and enter them manually into LoTW.
73/GL,? ? ? Bob? K8BL
On Friday, January 11, 2019, 12:44:28 PM EST, Bob Hammond
<propgrinder@?????.???> wrote:
What method of recording do you all use for QSOs?
I'm setting up my fixed base station and know from my handheld/Arrow days
that I cannot operate, talk, and write all at the same time with any
accuracy.
Bob
W7OTJ
DN17
_______________________________________________
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: http://www.amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 5
Date: Fri, 11 Jan 2019 19:31:44 +0000
From: Doug Phelps <DougPhelps@??????????.???>
To: Ryan Noguchi <ai6do@?????.???>
Cc: "amsat-bb@?????.???? <amsat-bb@?????.???>
Subject: Re: [amsat-bb] Q: An easy way to turn paper logs to a logging
program?
Message-ID:
<0OP2x7Av1nJDKgHysZS8RG_v_Cbr3rAJK_fzsKZ-edXypUv5qKisTofBoxsrYaRWRlCd2oe7MExGX
0c2sq8kAvL3IAi7HKIg87-0fdA6Yi4=@??????????.???>
Content-Type: text/plain; charset=UTF-8
I would appreciate receiving a copy.
Sent with ProtonMail Secure Email.
??????? Original Message ???????
On Friday, January 11, 2019 11:29 AM, Ryan Noguchi via AMSAT-BB
<amsat-bb@?????.???> wrote:
> I use Excel to log my satellite contacts and convert them to ADIF format
for upload to LoTW, eQSL, QRZ.com, ClubLog, etc. Using Excel provides a lot
of flexibility for copy/paste, search/replace, etc. Once you OCR those logs,
or if you have to enter them manually, it will likely be less work to get
them into Excel than into some other logging application.?
>
> I use those online services and backups thereof in ADIF format as my
"logbook" for all my QSOs, and the Excel workbook as my "logbook" for
satellite work. I got the original version of this Excel workbook on the web
a few years ago, not sure where. Let me know if you'd like me to send you
the template. QSO data is entered in one worksheet, and that data is used by
another worksheet to format an ADIF output that can be copied/pasted into
Notepad to create an ADIF-formatted text file. I use yet another worksheet
to tabulate statistics of the QSOs I've had on the various satellites and
modes.?
>
> 73, Ryan AI6DO
>
> On Wednesday, January 9, 2019, 6:18:17 PM PST, Eric - Gmail
ericrosenberg.dc@?????.??? wrote:
>
> I'd like to convert my paper satellite logs (dating back to the 1980's,
> from AO-10 on) to as yet undermined logging program.? I'd need to create
> an ADIF file regardless of the final destination (including LoTW and/or
> Clublog)
>
> Is there any way to do this other than inputting every QSO one at a
> time?
>
> I thought about scanning them and then using an OCR program to put them
> into a spreadsheet, but that seems to be equally -- or more -- labor
> intensive.
>
> Any suggestions are appreciated!
>
> 73,
> Eric W3DQ
>
> 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: http://www.amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 6
Date: Fri, 11 Jan 2019 12:17:13 -0800
From: Bryan Green <bryan@?????.???>
To: Robert Bragg <airrj1@?????.???>
Cc: AMSAT BB <amsat-bb@?????.???>, Burns Fisher <burns@??????.??>
Subject: Re: [amsat-bb] Pass recording
Message-ID: <8E062B16-7B76-43E1-A9A8-FE3E073546C6@?????.???>
Content-Type: text/plain; charset=us-ascii
+1 for the SONY recorders for all reasons listed.
-- bag
Bryan KL7CN/W6
bryan@?????.???
> On Jan 11, 2019, at 10:03, Robert Bragg <airrj1@?????.???> wrote:
>
> I second the Sony ICD-PX370. Got mine locally at Bust Buy and I have had
> very good luck with it. The good thing is that you cannot hear any audio
> in the earphones unless the unit is recording. The limits the chances of
> not getting the pass recorded. The only failure point that I have found is
> that if you are recording and you hit the 'pause' button, you can still
> hear audio without recording. So watch out for that. I have made hundreds
> of passes in the last year and never lost any audio yet.
>
> Good Luck.
> R.J.
> WY7AA
>
>> On Fri, Jan 11, 2019 at 12:50 PM Burns Fisher <burns@??????.??> wrote:
>>
>> I use a Sony ICD-PX370 with line-in connected to a splitter on the earphone
>> jack. It does a really good job of recording, the batteries last a long
>> time (not rechargeable though), and you can download the file and listen
>> elsewhere.
>>
>> One source:
>>
>>
https://www.amazon.com/gp/product/B06XFTWCBJ/ref=oh_aui_search_asin_title?ie=U
TF8&psc=1
>>
>> 73
>>
>> Burns WB1FJ
>>
>> On Fri, Jan 11, 2019 at 12:44 PM Bob Hammond <propgrinder@?????.???>
>> wrote:
>>
>>> What method of recording do you all use for QSOs?
>>> I'm setting up my fixed base station and know from my handheld/Arrow days
>>> that I cannot operate, talk, and write all at the same time with any
>>> accuracy.
>>>
>>> Bob
>>> W7OTJ
>>> DN17
>>> _______________________________________________
>>> 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: http://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: http://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: http://www.amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 7
Date: Fri, 11 Jan 2019 15:48:49 -0500
From: Joel Kandel <kandelj@?????????.???>
To: AMSAT-BB@?????.???
Subject: [amsat-bb] G-5500 Az-El controller box
Message-ID: <EED28D5A-ABCB-42C5-BBA4-A9895F8C1C72@?????????.???>
Content-Type: text/plain; charset=utf-8
Looking for the above, new or used but in working condition.
Indicate price including shipping. I?m in S Florida.
Thanks,
Joel, KI4T
There are more stars in the universe than seconds that have passed since the
Earth was formed.
------------------------------
Message: 8
Date: Sat, 12 Jan 2019 06:17:18 +0900
From: Akira Kaneko <ja1ogz@????.????.??.??>
To: ok2gz <ok2gz@??????.??>
Cc: amsat-bb@?????.???
Subject: Re: [amsat-bb] preliminary TLE data for NEXUS sat (jan-17)
Message-ID: <CC47812B-B75F-43C9-A7CC-A6036D982A7E@????.????.??.??>
Content-Type: text/plain; charset=utf-8
Dear Jarda san,
Thanks your support.
Preliminary TLE update.
NEXUS
1 99999U 99999A 19017.08240741 0.00000000 00000-0 00000-0 0 9994
2 99999 97.2200 79.6000 0014000 196.1000 199.2528 15.22513194 00
http://sat.aero.cst.nihon-u.ac.jp/nexus/E2_ini.html
JA1OGZ Akira
Sent from iPad ???
ja1ogz@????.????.??.??
ja1ogz@????.???
2019/01/10 20:14?ok2gz <ok2gz@??????.??>????:
> Nexus cubesat will be launched on January 17, 2019.
> In document <a
href="http://sat.aero.cst.nihon-u.ac.jp/nexus/download/About_initial_operation
_immediately_after_separation_e.pdf">About_initial_operation_immediately_after
_separation_e.pdf</a> from ANS-006 AMSAT NEWS SERVICE
> are given the preliminary TLE data.
>
> NEXUS
> 1 99999U 99999A 19017.08394676 0.00000000 00000-0 00000-0 0 9991
> 2 99999 97.2400 80.2200 0010290 211.2310 184.0310 15.23623214 09
>
>
> The TLE data depends on the exact positions of each item. Positions are
compromised when copying documents.
> Such damaged TLE data are not in sat programs as GPredict) processed.
>
> The repair is simple. Just compare the positions of dots and dashes in TLE
data and move items to the correct positions.
>
> Already for FOX-1D I wrote a TLEdoctor program that can display flawed
positions and can easily be corrected by comparing with the template. After
repair, GPredict data can be uploaded and we can take all advantages of our
sat program during the first pass.
>
> TLE doctor: http://oscar.ok2gz.eu/fox1d.php
>
> Yet planned orbit params for NEXUS
>
> period: 94.515 min
> apogeum : 502.1 km
> perigeum: 489.0 km
> max qso length: 4904 km
> inclination: 97.24 degrees
>
> 73 jarda ok2gz
>
>
>
>
> ---
> This email has been checked for viruses by AVG.
> https://www.avg.com
> _______________________________________________
> 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: http://www.amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 9
Date: Fri, 11 Jan 2019 21:23:52 +0000
From: "Peter Goodhall (2M0SQL)" <peter@????????.??.??>
To: Bob Hammond <propgrinder@?????.???>
Cc: Amsat <amsat-bb@?????.???>
Subject: Re: [amsat-bb] Pass recording
Message-ID:
<CAFvUair0XqGNKWRm2MM6CbV96UTOdhf2oJ-n-bJfehs=P6Zw4A@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
Bob,
Like you for portable it's far easier to record the pass, think your
comment is regarding from fixed home station for that I made an application
that interacts with SatPC32 via it's DDE interface called Pass Recorder
https://www.2m0sql.com/pass-recorder/
Peter, 2M0SQL
On Fri, 11 Jan 2019, 17:45 Bob Hammond <propgrinder@?????.??? wrote:
> What method of recording do you all use for QSOs?
> I'm setting up my fixed base station and know from my handheld/Arrow days
> that I cannot operate, talk, and write all at the same time with any
> accuracy.
>
> Bob
> W7OTJ
> DN17
> _______________________________________________
> 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: http://www.amsat.org/mailman/listinfo/amsat-bb
>
------------------------------
Message: 10
Date: Fri, 11 Jan 2019 21:50:23 +0000 (UTC)
From: Ryan Noguchi <ai6do@?????.???>
To: "<AMSAT-BB@?????.???>" <amsat-bb@?????.???>
Subject: Re: [amsat-bb] Protecting SDR
Message-ID: <913971673.17277052.1547243423544@????.?????.???>
Content-Type: text/plain; charset=UTF-8
When you say "without any protection on the input" do you mean you aren't
using any diplexer or filter (external to the SDR) on the input RF path to
the SDR, even for Mode J??
73, Ryan AI6DO
On Friday, January 11, 2019, 10:03:30 AM PST, Paul Stoetzer
<n8hm@????.???> wrote:
I've used my AirSpy Mini and FCD+ without any protection on the input
without any damage, but your mileage may vary!
73,
Paul, N8HM
On Fri, Jan 11, 2019 at 12:55 PM Rolf Krogstad <rolf.krogstad@?????.???>
wrote:
>
> I use a diplexer, such as the MFJ-916B or equivalent, and it provides
> enough isolation of the 2 meter signal to prevent problems.
>
> Rolf? ? NR0T
> EN34
>
>
>
> On Fri, Jan 11, 2019, 11:14 AM Ryan Noguchi via AMSAT-BB <amsat-bb@?????.???
> wrote:
>
> >? Is a transmit/receive switch necessary, or would a simple duplexer
> > suffice? Something like the MFJ-916B offers 55dB or better isolation, and
> > fairly low loss (0.2dB). It's a lot cheaper and more convenient to set up.
> >
> > My SDRPlay RSP1A arrived yesterday and I got it and my FT-857D working
> > with CAT control using SatPC32 last night. I haven't worked a pass with it
> > yet, though; maybe this weekend. The RSP1A is rated for 0dBm continuous,
> > 10dBm momentary. The antenna is a dual-band Elk in the attic on a TV
> > rotator, so there is no benefit of interantenna isolation. If I assume the
> > duplexer's spec value of 55dB isolation, that would attenuate even 250W
> > input down to less than 0dBm, correct? Patrick WD9EWK had commented on the
> > subject of SDR protection in a QRZ.com posting, and has used a duplexer
> > instead of a T/R switch with his SDRPlay SDR:
> >
https://forums.qrz.com/index.php?threads/kenwood-ts-2000-in-full-duplex-mode-o
n-single-coax-line.605225/#post-4613865
> >
> > Would love to know if my math is wrong, if the RSP1A's spec isn't
> > trustworthy, and/or if there are any other considerations that make a
> > transmit/receive switch better (or necessary) than just a duplexer, before
> > I let the magic smoke escape.
> >
> > Thanks and 73, Ryan AI6DO
> >
> >? ? On Friday, January 11, 2019, 8:31:34 AM PST, saguaroastro <
> > saguaroastro@???.???> wrote:
> >
> >? Kevin,
> > I've be looking at this. MFJ-1708. There are several versions. So look the
> > up on Hro to compare
> >
> >
> > 73Rick Tejera (K7TEJ)Saguaro Astronomy ClubWww.saguaroastro.orgThunderbird
> > Astronomy ClubWww.w7tbc.org
> >
> > -------- Original message --------From: Kevin Zari <kk4yel@?????.???>
> > Date: 1/11/19? 06:40? (GMT-07:00) To: amsat-bb@?????.??? Subject:
> > [amsat-bb] Protecting SDR
> > For those of you with an SDR dongle, for example the Funcube Pro +,? how
> > do you protect it from not being damaged by TX energy? I?m thinking of
> > hooking mine up to the 70cm antenna in my M2 LEO pack while I TX on the 2m
> > antenna and was afraid I?d overload the SDR. I see folks using them for
> > their RX on linear birds, so I?m just wondering how you have them hooked
> > up.
> > Thanks in advance for your advice.
> >
> > -Kevin (KK4YEL)
------------------------------
Message: 11
Date: Fri, 11 Jan 2019 16:53:25 -0500
From: Paul Stoetzer <n8hm@????.???>
To: Ryan Noguchi <ai6do@?????.???>
Cc: "<AMSAT-BB@?????.???>" <amsat-bb@?????.???>
Subject: Re: [amsat-bb] Protecting SDR
Message-ID:
<CABzOSOqg4tQDPpEa+KY1pJ8p-n3HpGyGzcKtEWvSnwZ2i+8=Xg@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
Yes, I have. Though for Mode J, I would have a filter on TX or else the
third harmonic certainly would overload it.
I haven?t extensively done this, but I haven?t encountered any problems
when doing it. I would recommend using a diplexer or filter on the input.
Just be sure you use something that?s very low loss.
73,
Paul, N8HM
On Fri, Jan 11, 2019 at 16:50 Ryan Noguchi via AMSAT-BB <amsat-bb@?????.???>
wrote:
> When you say "without any protection on the input" do you mean you aren't
> using any diplexer or filter (external to the SDR) on the input RF path to
> the SDR, even for Mode J?
>
> 73, Ryan AI6DO
> On Friday, January 11, 2019, 10:03:30 AM PST, Paul Stoetzer <
> n8hm@????.???> wrote:
>
> I've used my AirSpy Mini and FCD+ without any protection on the input
> without any damage, but your mileage may vary!
>
> 73,
>
> Paul, N8HM
>
> On Fri, Jan 11, 2019 at 12:55 PM Rolf Krogstad <rolf.krogstad@?????.???>
> wrote:
> >
> > I use a diplexer, such as the MFJ-916B or equivalent, and it provides
> > enough isolation of the 2 meter signal to prevent problems.
> >
> > Rolf NR0T
> > EN34
> >
> >
> >
> > On Fri, Jan 11, 2019, 11:14 AM Ryan Noguchi via AMSAT-BB <
> amsat-bb@?????.???
> > wrote:
> >
> > > Is a transmit/receive switch necessary, or would a simple duplexer
> > > suffice? Something like the MFJ-916B offers 55dB or better isolation,
> and
> > > fairly low loss (0.2dB). It's a lot cheaper and more convenient to set
> up.
> > >
> > > My SDRPlay RSP1A arrived yesterday and I got it and my FT-857D working
> > > with CAT control using SatPC32 last night. I haven't worked a pass
> with it
> > > yet, though; maybe this weekend. The RSP1A is rated for 0dBm
> continuous,
> > > 10dBm momentary. The antenna is a dual-band Elk in the attic on a TV
> > > rotator, so there is no benefit of interantenna isolation. If I assume
> the
> > > duplexer's spec value of 55dB isolation, that would attenuate even 250W
> > > input down to less than 0dBm, correct? Patrick WD9EWK had commented on
> the
> > > subject of SDR protection in a QRZ.com posting, and has used a duplexer
> > > instead of a T/R switch with his SDRPlay SDR:
> > >
>
https://forums.qrz.com/index.php?threads/kenwood-ts-2000-in-full-duplex-mode-o
n-single-coax-line.605225/#post-4613865
> > >
> > > Would love to know if my math is wrong, if the RSP1A's spec isn't
> > > trustworthy, and/or if there are any other considerations that make a
> > > transmit/receive switch better (or necessary) than just a duplexer,
> before
> > > I let the magic smoke escape.
> > >
> > > Thanks and 73, Ryan AI6DO
> > >
> > > On Friday, January 11, 2019, 8:31:34 AM PST, saguaroastro <
> > > saguaroastro@???.???> wrote:
> > >
> > > Kevin,
> > > I've be looking at this. MFJ-1708. There are several versions. So look
> the
> > > up on Hro to compare
> > >
> > >
> > > 73Rick Tejera (K7TEJ)Saguaro Astronomy
> ClubWww.saguaroastro.orgThunderbird
> > > Astronomy ClubWww.w7tbc.org
> > >
> > > -------- Original message --------From: Kevin Zari <kk4yel@?????.???>
> > > Date: 1/11/19 06:40 (GMT-07:00) To: amsat-bb@?????.??? Subject:
> > > [amsat-bb] Protecting SDR
> > > For those of you with an SDR dongle, for example the Funcube Pro +,
> how
> > > do you protect it from not being damaged by TX energy? I?m thinking of
> > > hooking mine up to the 70cm antenna in my M2 LEO pack while I TX on
> the 2m
> > > antenna and was afraid I?d overload the SDR. I see folks using them for
> > > their RX on linear birds, so I?m just wondering how you have them
> hooked
> > > up.
> > > Thanks in advance for your advice.
> > >
> > > -Kevin (KK4YEL)
>
>
> _______________________________________________
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> expressed
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> AMSAT-NA.
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> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
>
------------------------------
Subject: Digest Footer
_______________________________________________
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 member? Join now to support the amateur satellite program!
http://www.amsat.org/mailman/listinfo/amsat-bb
------------------------------
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