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CX2SA > SATDIG 02.03.20 00:32l 682 Lines 22648 Bytes #999 (0) @ WW
BID : AMSATBB1564
Read: GUEST
Subj: AMSAT-BB-digest V15 64
Path: IW8PGT<HB9ON<IW2OHX<IR2UBX<DB0RES<ON0AR<OZ5BBS<CX2SA
Sent: 200228/1841Z @:CX2SA.SAL.URY.SOAM #:25802 [Salto] FBB7.00e $:AMSATBB1564
From: CX2SA@CX2SA.SAL.URY.SOAM
To : SATDIG@WW
Today's Topics:
1. Re: APRS sats with the TH-D74A? (Patrick STODDARD (WD9EWK/VA7EWK))
2. Re: SATpc32 and IC-9700 operational question
(Joseph B. Fitzgerald)
3. Icom 9700 1.2gig (23cm) Mode (Sloan Davis)
4. Re: Icom 9700 1.2gig (23cm) Mode (Peter Goodhall (2M0SQL))
5. Re: Icom 9700 1.2gig (23cm) Mode (John Kludt)
6. Re: Icom 9700 1.2gig (23cm) Mode (Ev Tupis)
7. FO29 Operation schedule in March. (Akira Kaneko)
8. Husky-1 Xmit Power (Mike Lucas)
9. Re: Husky-1 Xmit Power (JoAnne K9JKM)
10. Re: Husky-1 Xmit Power (Jeff )
11. Re: Husky-1 Xmit Power (Burns Fisher)
12. Re: Husky-1 Xmit Power (Zach Metzinger)
13. Upcoming ARISS contact with River Ridge High School, New Port
Richey, FL (n4csitwo@?????????.????
----------------------------------------------------------------------
Message: 1
Date: Thu, 27 Feb 2020 22:15:15 +0000
From: "Patrick STODDARD (WD9EWK/VA7EWK)" <amsat-bb@??????.???>
To: Steve Kristoff <skristof@???????.???>, AMSAT <amsat-bb@?????.???>
Subject: Re: [amsat-bb] APRS sats with the TH-D74A?
Message-ID:
<CAN6TEUcznJdCQVnh5DrB2O_MzkzW_0mdrXE+odiG3m7v2kq7PA@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
Steve,
The TH-D74 works well for APRS via satellite, with those satellites
that work on one frequency or band. When the ISS digipeater is
operational, I can work those passes with just that HT and my Elk
log periodic. It has been a couple of weeks since I last worked an
ISS pass, since that system has been offline. I'm looking forward
to having the new radio system operational on the ISS, which should
take care of issues seen with the current system in the recent past.
The TH-D74 worked fine with NO-84 and even NO-44 in the past. The
only APRS digipeater satellite I can't work with just the TH-D74 is
FalconSat-3, as that is cross-band (2m up/70cm down), and the
TH-D74's TNC will only work with one VFO.
I have some files in my Dropbox space related to using the TH-D74
for satellites, including those with APRS digipeaters. Look for
the "TH-D74A" folder at:
http://dropbox.wd9ewk.net/
The AMSAT Journal ran an article on how to use a TH-D74 with the
APRS digipeater satellites, which also covered the TH-D72:
https://www.amsat.org/wordpress/wp-content/uploads/2014/01/AMSAT_Journal_Kenwo
odHT_Packet.pdf
In addition, I wrote an article for QST that had the settings that
needed to be set to work the digipeaters like those on the ISS:
https://www.dropbox.com/sh/v3byggtuqw33fkk/AACObUDxtNk85lm6XyRcWOeqa/Articles/
Making_Digital_Contacts_through_ISS-QST-201812.pdf?dl=0
If the links get mangled in e-mail, you can look up WD9EWK on
QRZ.com to get to other links for the articles.
73!
Patrick WD9EWK/VA7EWK
http://www.wd9ewk.net/
Twitter: @?????? or http://twitter.com/WD9EWK
On Thu, Feb 27, 2020 at 7:01 PM Steve Kristoff via AMSAT-BB <
amsat-bb@?????.???> wrote:
>
> Is anyone using the Kenwood TH-D74A, say with an Arrow antenna, to work
> the APRS sats (ISS, AISAT, etc.)? If so, what are your thoughts? Is it
> worth a try?
> Steve AI9IN
>
>
>
------------------------------
Message: 2
Date: Thu, 27 Feb 2020 23:13:48 +0000
From: "Joseph B. Fitzgerald" <jfitzgerald@????.???.???>
To: "amsat-bb@?????.???? <amsat-bb@?????.???>, Michael Walker
<va3mw@??????????.???>
Subject: Re: [amsat-bb] SATpc32 and IC-9700 operational question
Message-ID:
<BN6PR22MB0083736CAE4E9B14F912923F87EB0@?????????????.????????.????.???????.??
?>
Content-Type: text/plain; charset="iso-8859-1"
Mike,
Glad you are having fun on the birds. Your intuition about using too much
bandwidth is correct. There is "One True Rule" to follow, in essence:
" each operator tunes his
transmit frequency, corrected for Doppler,
so that it arrives at the same frequency at the
spacecraft as every other operator"
see: https://www.amsat.org/wordpress/wp-content/uploads/2015/02/FDT-WA4SCA.pdf
de KM1P Joe.
------------------------------
Message: 3
Date: Thu, 27 Feb 2020 19:40:46 -0500
From: Sloan Davis <blkupspilot@???.???>
To: amsat-bb@?????.???
Subject: [amsat-bb] Icom 9700 1.2gig (23cm) Mode
Message-ID: <CF2D41B0-2CD0-4B9B-A046-E350E367638E@???.???>
Content-Type: text/plain; charset=utf-8
Has anyone experienced any malfunction in transmitting on their Icom 9700 on
the 1.2 gig (L-Band Mode)? My SWR?s are registering 3+ and I?ve changed
antennas twice with direct connection/ connectors using N adapters. I?m
using LMR 400 coaxial (50 foot) run. The power coming out of the radio is 8
watts via dummy load/meter. The antenna is from M2 and requires no tuning.
Not sure what else I can do?
Sloan (KN4GQB
------------------------------
Message: 4
Date: Fri, 28 Feb 2020 01:12:57 +0000
From: "Peter Goodhall (2M0SQL)" <peter@????????.??.??>
To: Sloan Davis <blkupspilot@???.???>
Cc: Amsat <amsat-bb@?????.???>
Subject: Re: [amsat-bb] Icom 9700 1.2gig (23cm) Mode
Message-ID:
<CAFvUaiokVKFLAhgyihf18SbE1du2gafDEfS5q5QcYhUysxZ54Q@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
Best option would be put an antenna analyser on the antenna, never trust
pretuned antennas.
Peter, 2M0SQL
On Fri, 28 Feb 2020, 00:48 Sloan Davis via AMSAT-BB, <amsat-bb@?????.???>
wrote:
> Has anyone experienced any malfunction in transmitting on their Icom 9700
> on the 1.2 gig (L-Band Mode)? My SWR?s are registering 3+ and I?ve changed
> antennas twice with direct connection/ connectors using N adapters. I?m
> using LMR 400 coaxial (50 foot) run. The power coming out of the radio is 8
> watts via dummy load/meter. The antenna is from M2 and requires no tuning.
>
> Not sure what else I can do?
>
> Sloan (KN4GQB
> _______________________________________________
> 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: 5
Date: Thu, 27 Feb 2020 21:15:49 -0500
From: John Kludt <johnnykludt@?????.???>
To: Sloan Davis <blkupspilot@???.???>
Cc: Amsat BB <amsat-bb@?????.???>
Subject: Re: [amsat-bb] Icom 9700 1.2gig (23cm) Mode
Message-ID:
<CABsMmtT1uPtB8SmJPgZLqqHmedejnWThRd3n5CH1PAszz_3ayg@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
Sloan,
The other thing I would suggest is using either LMR600 or even better
hardline. The calculated loss of 50 feet of LMR 400 at 1.2G is 2.3 dB by
one online calculator. Assuming you get your SWR down into the 1.2 range,
you will get about 4.5 watts to the antenna. May be okay depending on what
you are doing. I always worry when I spend half my money on heating up the
coax.
I used my 9700 in the January VHF contest on 1296 with no problem. The
antennas where a pair of Directive Systems 45 element loopers fed with 7/8"
hardline. Way overkill for satellites if that is what you are going to use
your station for and the direct answer to your question is the 9700 worked
fine.
Agree on the need the get an antenna analyzer on the system if you can.
The other thing while you are at it is to TDR your cables. We have traced
more problems to bad connectors than I care to admit. Anymore when things
are strange that is where we start. A quick check might be to put your
dummy load on the end of the coax instead of the antenna and see what the
SWR is.
Hope that helps
John
On Thu, Feb 27, 2020 at 7:48 PM Sloan Davis via AMSAT-BB <amsat-bb@?????.???>
wrote:
> Has anyone experienced any malfunction in transmitting on their Icom 9700
> on the 1.2 gig (L-Band Mode)? My SWR?s are registering 3+ and I?ve changed
> antennas twice with direct connection/ connectors using N adapters. I?m
> using LMR 400 coaxial (50 foot) run. The power coming out of the radio is 8
> watts via dummy load/meter. The antenna is from M2 and requires no tuning.
>
> Not sure what else I can do?
>
> Sloan (KN4GQB
> _______________________________________________
> 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: Fri, 28 Feb 2020 04:01:10 +0000 (UTC)
From: Ev Tupis <w2ev@?????.???>
To: amsat-bb@?????.???
Subject: Re: [amsat-bb] Icom 9700 1.2gig (23cm) Mode
Message-ID: <1450225702.1217285.1582862470271@????.?????.???>
Content-Type: text/plain; charset=UTF-8
Directive Systems antennas are known to be well engineered and assembled.?
I have been to many antenna ranges to find that measured results are within
0.1 dB of claimed specs.? Still, your points-of-failure include:
Icom 9700 antenna jack.? Check to make sure the center "fingers" of the N
connector are not damaged or otherwise askew.
Use different coax and retest.? A problem with either connector can inject
high SWR.? Ditto if the coax itself has been crushed at any point along its
length.
Place a 50 ohm dummy load at the far end of the coax and retest.? If it
shows low SWR, then the problem is truly with the antenna; call directive
systems with this information.? They will take care of you.
Here's hoping that these suggestions help (or offer you insights that
eventually lead you to a solution).
Kindly,
Ev, W2EV
On Thursday, February 27, 2020, 7:48:21 PM EST, Sloan Davis via AMSAT-BB
<amsat-bb@?????.???> wrote:
Has anyone experienced any malfunction in transmitting on their Icom 9700
on the 1.2 gig (L-Band Mode)? My SWR?s are registering 3+ and I?ve changed
antennas twice with direct connection/ connectors using N adapters. I?m
using LMR 400 coaxial (50 foot) run. The power coming out of the radio is 8
watts via dummy load/meter. The antenna is from M2 and requires no tuning.
Not sure what else I can do?
Sloan (KN4GQB
_______________________________________________
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: Fri, 28 Feb 2020 18:01:12 +0900
From: Akira Kaneko <ja1ogz@????.????.??.??>
To: amsat-bb@?????.???
Subject: [amsat-bb] FO29 Operation schedule in March.
Message-ID: <2457C2ED-1E5C-4DA0-98FF-99D5524234A1@????.????.??.??>
Content-Type: text/plain; charset=utf-8
JARL will inform you of the operation schedule of Fuji No.3 (FO29).
In addition, Transponder may not start up due to low battery.
FO29 Operation schedule time.(UTC)
Mar01 04:00- 14:05-
Mar02 04:45- 14:55-
Mar07 03:40- 05:25- 13:50-
Mar08 04:30-?06:15- 14:40-
Mar14 04:15- 06:00- 14:25-
Mar15 03:25- 05:10- 15:15-
Mar21 03:10- 04:55- 15:00-
Mar22 04:00- 05:45- 14:05-
Mar28 03:45- 05:30- 13:50-
Mar29 04:35- 06:20- 14:40-
TNX de JA1OGZ
Sent from iPad ???
ja1ogz@????.????.??.??
ja1ogz@????.???
------------------------------
Message: 8
Date: Fri, 28 Feb 2020 09:42:12 -0800
From: "Mike Lucas" <documike@???????.???>
To: <amsat-bb@?????.???>
Subject: [amsat-bb] Husky-1 Xmit Power
Message-ID: <001901d5ee5e$68f5bf90$3ae13eb0$@???????.???>
Content-Type: text/plain; charset="us-ascii"
I've been struggling to get telem downloads the past couple of days.I was
hoping to get at least a frame or two to see what the Xmit Power is at. Is
it back to low power level again?
Mike N7ASZ
------------------------------
Message: 9
Date: Fri, 28 Feb 2020 11:53:04 -0600
From: JoAnne K9JKM <joanne.k9jkm@?????.???>
To: amsat-bb@?????.???
Subject: Re: [amsat-bb] Husky-1 Xmit Power
Message-ID: <b00fcdd7-3b81-283c-cb96-bc011b9d41ae@?????.???>
Content-Type: text/plain; charset=utf-8; format=flowed
My FoxTelem showed 79.3 mW yesterday. It has been too weak for me to
decode anything as of this morning. I can hear it weakly through the
noise so it is still there. 7 element 70cm yagi here.
On 2/28/2020 11:42 AM, Mike Lucas via AMSAT-BB wrote:
> I've been struggling to get telem downloads the past couple of days.I was
> hoping to get at least a frame or two to see what the Xmit Power is at. Is
> it back to low power level again?
>
> Mike N7ASZ
>
> _______________________________________________
> 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
--
73 de JoAnne K9JKM
joanne.k9jkm@?????.???
------------------------------
Message: 10
Date: Fri, 28 Feb 2020 12:55:53 -0500
From: "Jeff " <kb2mjeff@???.???>
To: <amsat-bb@?????.???>
Subject: Re: [amsat-bb] Husky-1 Xmit Power
Message-ID: <05f201d5ee60$52ee7cd0$f8cb7670$@???.???>
Content-Type: text/plain; charset="us-ascii"
Hi Mike. I just rx'd some packets not many I think it's in burst mode, but
not sure as I wasn't at the station when it passed over. Last Fwd Power
observed here was 73.3 mW
73 Jeff kb2m
-----Original Message-----
From: AMSAT-BB <amsat-bb-bounces@?????.???> On Behalf Of Mike Lucas via
AMSAT-BB
Sent: Friday, February 28, 2020 12:42
To: amsat-bb@?????.???
Subject: [amsat-bb] Husky-1 Xmit Power
I've been struggling to get telem downloads the past couple of days.I was
hoping to get at least a frame or two to see what the Xmit Power is at. Is
it back to low power level again?
Mike N7ASZ
_______________________________________________
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: 11
Date: Fri, 28 Feb 2020 13:00:09 -0500
From: Burns Fisher <wb1fj-bb@??????.??>
To: JoAnne K9JKM <joanne.k9jkm@?????.???>
Cc: AMSAT BB <amsat-bb@?????.???>
Subject: Re: [amsat-bb] Husky-1 Xmit Power
Message-ID:
<CABX7KxVu8SFVRFukCYncpA9nWVwRCSXv-FP95wXg8uujt9smRQ@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
A couple things to point out. This is still owned by University of
Washington. We (AMSAT can't really say much about it.) Here is where they
say things (nothing very recently though):
https://www.facebook.com/UWCubeSat/
You can also look at the current telemetry here where we are archiving the
worldwide telemetry data for them.
http://www.amsat.org/tlm/health.php?id=6&port=
On Fri, Feb 28, 2020 at 12:55 PM JoAnne K9JKM via AMSAT-BB <
amsat-bb@?????.???> wrote:
> My FoxTelem showed 79.3 mW yesterday. It has been too weak for me to
> decode anything as of this morning. I can hear it weakly through the
> noise so it is still there. 7 element 70cm yagi here.
>
>
> On 2/28/2020 11:42 AM, Mike Lucas via AMSAT-BB wrote:
> > I've been struggling to get telem downloads the past couple of days.I was
> > hoping to get at least a frame or two to see what the Xmit Power is at.
> Is
> > it back to low power level again?
> >
> > Mike N7ASZ
> >
> > _______________________________________________
> > 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
>
> --
> 73 de JoAnne K9JKM
> joanne.k9jkm@?????.???
>
> _______________________________________________
> 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: 12
Date: Fri, 28 Feb 2020 12:05:02 -0600
From: Zach Metzinger <zmetzing@?????.???>
To: amsat-bb@?????.???
Subject: Re: [amsat-bb] Husky-1 Xmit Power
Message-ID: <05fe196c-38dc-4028-66fa-e94a63cf38e8@?????.???>
Content-Type: text/plain; charset=utf-8; format=flowed
On 2020-02-28 12:00, Burns Fisher via AMSAT-BB wrote:
> A couple things to point out. This is still owned by University of
> Washington. We (AMSAT can't really say much about it.) Here is where they
> say things (nothing very recently though):
> https://www.facebook.com/UWCubeSat/
Has anyone tried copying the Ka-band transmissions (24 GHz, IIRC)?
--- Zach
N0ZGO
------------------------------
Message: 13
Date: Fri, 28 Feb 2020 13:32:55 -0500
From: <n4csitwo@?????????.???>
To: <amsat-bb@?????.???>, <ariss-press@?????.???>
Subject: [amsat-bb] Upcoming ARISS contact with River Ridge High
School, New Port Richey, FL
Message-ID: <A751C62ED68A4EAFA3E45F0E2BFCC8E1@???>
Content-Type: text/plain; charset="iso-8859-1"
An International Space Station school contact has been planned with
participants at River Ridge High School, New Port Richey, FL. The event is
scheduled to begin at approximately 15:17 UTC. The duration of the contact
is approximately 9 minutes and 30 seconds. The contact will be direct
between NA1SS and WA3YFQ. The contact should be audible over the state of
Florida and adjacent areas. Interested parties are invited to listen in on
the 145.80 MHz downlink. The contact is expected to be conducted in English.
Story:
River Ridge High School's sprawling 120 acre campus is located Pasco County,
Florida. River Ridge strives to provide their 1700 students with the
highest degree of instructional excellence while recognizing the unique
needs and developing the abilities of every student. Through the cooperative
efforts of family, school, and community, students are prepared to be
responsible, productive citizens and life-long learners. River Ridge is the
home to five career academies, including the New Teaching, New Media and
Communications, Engineering, Business, and Fine Arts and Musical
Entertainment, each of which is designed to prepare students for future
careers. Many of the academy students earn valuable industry certifications
before graduating.
Students also have the opportunity to earn college credit or an AA degree
through their extensive Advanced Placement program and dual-enrollment
opportunities both on campus and at Pasco Hernando State College.
Participants will ask as many of the following questions as time allows:
1. Are any effects of climate change visible from the ISS?
2. What goes through your mind on the launch pad?
3. How do you protect yourself against harmful radiation?
4. When on the ISS, what is your favorite free time activity?
5. Why do you periodically have to adjust the orbit of the ISS?
6. What new perspective about planet earth have you gained after being on
the ISS?
7. Does space really smell like gun powder?
8. If something could be invented tomorrow that would help you on the ISS,
what would it be?
9. Our experiment will be arriving on the ISS on mission 14 and we'd like to
know if astronauts receive any medications for diseases they are susceptible
to on the ISS?
10. What was most challenging obstacle for you during training?
11. What happens if there is a medical emergency that involves a surgery?
12. Do you have a reaction wheel on the ISS?
13. What is most interesting conspiracy theory you've heard about space?
14. After being on the ISS, would you want to go to Mars?
15. How do you water the plants in Veggie?
16. Are you limited to a maximum weight of personal stuff you can take?
17. Do you ever get motion sickness?
18. Does anyone play an instrument while on the ISS?
19. What advice would you give a student wanting to be an astronaut?
20. What was most challenging about your first day?
21. What is the one food you dream about?
22. Do you think we need to clean up space debris?
PLEASE CHECK THE FOLLOWING FOR MORE INFORMATION ON ARISS UPDATES:
Visit ARISS on Facebook. We can be found at Amateur Radio on the
International Space Station (ARISS).
To receive our Twitter updates, follow @????????????
Next planned event(s):
TBD
About ARISS
Amateur Radio on the International Space Station (ARISS) is a cooperative
venture of international amateur radio societies and the space agencies that
support the International Space Station (ISS). In the United States,
sponsors are the Radio Amateur Satellite Corporation (AMSAT), the American
Radio Relay League (ARRL), the ISS National Lab and National Aeronautics and
Space Administration (NASA). The primary goal of ARISS is to promote
exploration of science, technology, engineering, and mathematics (STEM)
topics by organizing scheduled contacts via amateur radio between crew
members aboard the ISS and students in classrooms or public forms. Before
and during these radio contacts, students, educators, parents, and
communities learn about space, space technologies, and amateur radio. For
more information, see www.ariss.org.
Thank you & 73,
David - AA4KN
------------------------------
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!
https://www.amsat.org/mailman/listinfo/amsat-bb
------------------------------
End of AMSAT-BB Digest, Vol 15, Issue 64
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