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CX2SA > SATDIG 06.09.17 21:17l 795 Lines 25646 Bytes #999 (0) @ WW
BID : AMSATBB12221
Read: GUEST
Subj: AMSAT-BB-digest V12 221
Path: IW8PGT<IR2UBX<IZ3LSV<I0OJJ<N6RME<CX2SA
Sent: 170906/1914Z @:CX2SA.SAL.URY.SOAM #:18928 [Salto] FBB7.00e $:AMSATBB12221
From: CX2SA@CX2SA.SAL.URY.SOAM
To : SATDIG@WW
Today's Topics:
1. Re: This may take a while. (Eduardo PY2RN)
2. Satreporter attack (vk4tec@xxxxxxxxxxxxx.xxxx
3. Special Event Stations Commemorate ESOC 50th Anniversary
(JoAnne K9JKM)
4. Upcoming ARISS contact with Meadows Elementary School,
Manhattan Beach, CA (n4csitwo@xxxxxxxxx.xxxx
5. Re: Need Delaware (R.T.Liddy)
6. AO-85 NA SSTV (Michael A. Foster)
7. Re: AO-85 NA SSTV (Rick Walter)
8. Re: Need Delaware (Matthew Stevens)
9. Finding a short in Coax to Antenna (Robert Bruninga)
10. Re: Finding a short in Coax to Antenna (Norm n3ykf)
11. A couple of nice AO-7 websites (Zach Metzinger)
12. Re: A couple of nice AO-7 websites (Zach Metzinger)
13. GRID MASTER # 4 (wa4hfn@xxxxxxx.xxxx
----------------------------------------------------------------------
Message: 1
Date: Wed, 6 Sep 2017 10:14:36 +0000 (UTC)
From: Eduardo PY2RN <py2rn@xxxx.xxx>
To: Norm n3ykf <normanlizeth@xxxxx.xxx>, "<,amsat-bb@xxxxx.xxxxxxxx
<amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] This may take a while.
Message-ID: <587469373.3699577.1504692876961@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
OA4/XQ3SA worked on SO-50 Jul 12, 2017. Hope he can confirm the QSO some day.
73,
Ed
PY2RNGG66LW
From: Norm n3ykf <normanlizeth@xxxxx.xxx>
To: "<,amsat-bb@xxxxx.xxxxxxxx <amsat-bb@xxxxx.xxx>
Sent: Tuesday, September 5, 2017 11:33 PM
Subject: [amsat-bb] This may take a while.
Last operating trip to OA land, I had the pleasure of assisting the
Radio Club Peruano in rehabbing their satellite station.
The only bittersweet pill taking these strange trips is that the
chances of working someone there, myself, from home, is almost nil.
Leaving a working station was my way of hoping someone would use it.
OA4/XQ3SA has been active from the club station in FH17. It still
works, four years after rehab.
Under rehab: https://www.flickr.com/photos/n3ykf/8251934224/in/photostream/
Blasting off on the next trip with some new (well tested) gear in a few days:
https://www.flickr.com/photos/n3ykf/37028859145/in/dateposted/
World class snorkeling and ham radio. What a vacation. Cheaper than
disney by half. Certainly less dangerous.
Time to introduce the little monsters to Nemo.
Norm n3ykf
_______________________________________________
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: Wed, 6 Sep 2017 18:23:58 +1000
From: <vk4tec@xxxxxxxxxxxxx.xxx>
To: "AMSAT" <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Satreporter attack
Message-ID: <014101d326e9$7f13b5f0$7d3b21d0$@xxxxxxxxxxxxx.xxx>
Content-Type: text/plain; charset="us-ascii"
Seems our friend is back - reported to cyber crime in Australia
50.255.43.233 - - [05/Sep/2017:06:39:41 +0000] "GET /cgi-bin/web_count.cgi
HTTP/1.1" 200 996 "-" "curl/7.49.0"
50.255.43.233 - - [05/Sep/2017:06:39:41 +0000] "GET /cgi-bin/web_count.cgi
HTTP/1.1" 200 996 "-" "curl/7.49.0"
50.255.43.233 - - [05/Sep/2017:06:39:41 +0000] "GET /cgi-bin/web_count.cgi
HTTP/1.1" 200 996 "-" "curl/7.49.0"
50.255.43.233 - - [05/Sep/2017:06:39:42 +0000] "GET /cgi-bin/web_count.cgi
HTTP/1.1" 200 996 "-" "curl/7.49.0"
50.255.43.233 - - [05/Sep/2017:06:39:42 +0000] "GET /cgi-bin/web_count.cgi
HTTP/1.1" 200 996 "-" "curl/7.49.0"
50.255.43.233 - - [05/Sep/2017:06:39:43 +0000] "GET /cgi-bin/web_count.cgi
HTTP/1.1" 200 996 "-" "curl/7.49.0"
50.255.43.233 - - [05/Sep/2017:06:39:43 +0000] "GET /cgi-bin/web_count.cgi
HTTP/1.1" 200 996 "-" "curl/7.49.0"
50.255.43.233 - - [05/Sep/2017:06:39:43 +0000] "GET /cgi-bin/web_count.cgi
HTTP/1.1" 200 996 "-" "curl/7.49.0"
50.255.43.233 - - [05/Sep/2017:06:39:44 +0000] "GET /cgi-bin/web_count.cgi
HTTP/1.1" 200 996 "-" "curl/7.49.0"
50.255.43.233 - - [05/Sep/2017:06:39:44 +0000] "GET /cgi-bin/web_count.cgi
HTTP/1.1" 200 996 "-" "curl/7.49.0"
50.255.43.233 - - [05/Sep/2017:06:39:44 +0000] "GET /cgi-bin/web_count.cgi
HTTP/1.1" 200 996 "-" "curl/7.49.0"
50.255.43.233 - - [05/Sep/2017:06:39:45 +0000] "GET /cgi-bin/web_count.cgi
HTTP/1.1" 200 996 "-" "curl/7.49.0"
50.255.43.233 - - [05/Sep/2017:06:39:45 +0000] "GET /cgi-bin/web_count.cgi
HTTP/1.1" 200 996 "-" "curl/7.49.0"
50.255.43.233 - - [05/Sep/2017:06:39:46 +0000] "GET /cgi-bin/web_count.cgi
HTTP/1.1" 200 996 "-" "curl/7.49.0"
50.255.43.233 - - [05/Sep/2017:06:39:46 +0000] "GET /cgi-bin/web_count.cgi
HTTP/1.1" 200 996 "-" "curl/7.49.0"
50.255.43.233 - - [05/Sep/2017:06:39:46 +0000] "GET /cgi-bin/web_count.cgi
HTTP/1.1" 200 996 "-" "curl/7.49.0"
50.255.43.233 - - [05/Sep/2017:06:39:46 +0000] "GET /cgi-bin/web_count.cgi
HTTP/1.1" 200 996 "-" "curl/7.49.0"
50.255.43.233 - - [05/Sep/2017:06:39:47 +0000] "GET /cgi-bin/web_count.cgi
HTTP/1.1" 200 996 "-" "curl/7.49.0"
50.255.43.233 - - [05/Sep/2017:06:39:47 +0000] "GET /cgi-bin/web_count.cgi
HTTP/1.1" 200 996 "-" "curl/7.49.0"
50.255.43.233 - - [05/Sep/2017:06:39:47 +0000] "GET /cgi-bin/web_count.cgi
HTTP/1.1" 200 996 "-" "curl/7.49.0"
50.255.43.233 - - [05/Sep/2017:06:39:48 +0000] "GET /cgi-bin/web_count.cgi
HTTP/1.1" 200 996 "-" "curl/7.49.0"
50.255.43.233 - - [05/Sep/2017:06:39:48 +0000] "GET /cgi-bin/web_count.cgi
HTTP/1.1" 200 996 "-" "curl/7.49.0"
50.255.43.233 - - [05/Sep/2017:06:39:48 +0000] "GET /cgi-bin/web_count.cgi
HTTP/1.1" 200 996 "-" "curl/7.49.0"
50.255.43.233 - - [05/Sep/2017:06:39:49 +0000] "GET /cgi-bin/web_count.cgi
HTTP/1.1" 200 996 "-" "curl/7.49.0"
50.255.43.233 - - [05/Sep/2017:06:39:49 +0000] "GET /cgi-bin/web_count.cgi
HTTP/1.1" 200 996 "-" "curl/7.49.0"
50.255.43.233 - - [05/Sep/2017:06:39:49 +0000] "GET /cgi-bin/web_count.cgi
HTTP/1.1" 200 996 "-" "curl/7.49.0"
50.255.43.233 - - [05/Sep/2017:06:39:49 +0000] "GET /cgi-bin/web_count.cgi
HTTP/1.1" 200 996 "-" "curl/7.49.0"
50.255.43.233 - - [05/Sep/2017:06:39:50 +0000] "GET /cgi-bin/web_count.cgi
HTTP/1.1" 200 996 "-" "curl/7.49.0"
50.255.43.233 - - [05/Sep/2017:06:39:51 +0000] "GET /cgi-bin/web_count.cgi
HTTP/1.1" 200 996 "-" "curl/7.49.0"
50.255.43.233 - - [05/Sep/2017:06:39:51 +0000] "GET /cgi-bin/web_count.cgi
HTTP/1.1" 200 996 "-" "curl/7.49.0"
50.255.43.233 - - [05/Sep/2017:06:39:52 +0000] "GET /cgi-bin/web_count.cgi
HTTP/1.1" 200 996 "-" "curl/7.49.0"
------------------------------
Message: 3
Date: Wed, 6 Sep 2017 08:47:21 -0500
From: JoAnne K9JKM <k9jkm@xxxxxxx.xxx>
To: "amsat-bb@xxxxx.xxxx <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Special Event Stations Commemorate ESOC 50th
Anniversary
Message-ID: <55f2019c-84a8-fc21-c36d-3ac2f55aed3c@xxxxxxx.xxx>
Content-Type: text/plain; charset=utf-8; format=flowed
Here is a bit of amateur radio news that is more timely transmitted now
rather than waiting for the weekend news cycle.
-----
Special Event Stations Commemorate ESOC 50th Anniversary
The European Space Agency ? Operations Centre (ESOC) in Darmstadt
will celebrate it's 50th Anniversary. The ESOC radio club DL0ESA
will be active between September 8 - 10.
Additionally some members will operate from their home QTH using
their own calls to spread the word of the special event station.
These will also count toward the ESA Radio Award:
https://sites.google.com/site/esahamradio/
Next, between September 18 to October 5, Age-Riise Raymond, LA5PMA
and Javier Roldan, EA1HEO, will activate EG1ESA, a special event
station operating from the Cebreros Ground Station in Spain.
This item was originally posted on the DX Coffee web site:
http://www.dxcoffee.com/eng/2017/dl0esa-operations-centre-esoc-will-become-50-
years-old/
[ANS thanks DX Coffee for the above information]
--
73 de JoAnne K9JKM
k9jkm@xxxxx.xxx
------------------------------
Message: 4
Date: Wed, 6 Sep 2017 09:54:02 -0400
From: <n4csitwo@xxxxxxxxx.xxx>
To: <ariss-press@xxxxx.xxx>, "amsat-edu" <amsat-edu@xxxxx.xxx>,
<amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Upcoming ARISS contact with Meadows Elementary
School, Manhattan Beach, CA
Message-ID: <5C190BD63C4641F1BD717B05D8018B98@xxx>
Content-Type: text/plain; charset="iso-8859-1"
An International Space Station school contact has been planned with
participants at Meadows Elementary School, Manhattan Beach, CA on 08 Sept.
The event is scheduled to begin at approximately 17:05 UTC. The duration of
the contact is approximately 9 minutes and 30 seconds. The contact will be
direct between NA1SS and KM6BWB. The contact should be audible over portions
of the state of California 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.
Meadows Elementary is one of 7 schools (5 elementary) in the Manhattan Beach
Unified School District. Meadows is a Kindergarten-5th grade school with
about 450 students. While not incredibly diverse, with 62% white, 12% Asian,
and 12% Hispanic students, 15% of its students are on an Individualized
Education Plan or IEP, to deal with learning difficulties. The campus has a
Math Olympiad after-school program that consistently places in the top 5 in
LA County, a hands-on science program for all students K-5 during the school
day, and a library for every student to access every week with their
classroom.
Participants will ask as many of the following questions as time allows:
1. How do you get picked to be an astronaut?
2. What kind of experiments do you do in space?
3. How do you eat without your food flying away?
4. Is it colorful in space?
5. How long did it take to get to the ISS?
6. What is something that you do in space that is different than on Earth?
7. How do you take a shower in space?
8. Has the ISS ever been hit by a meteorite?
9. How long does your oxygen tank last when you are on a spacewalk?
10. How many rooms does the ISS have?
11. Does anyone ever get sick with a cold or the flu on the ISS?
12. What do you sleep in at night? Do you have space pajamas?
13. Who inspired you to be an astronaut?
14. What is the one of the most interesting things you have seen when you
are in space?
15. What do you do to relax when you are in space?
16. What is the most interesting job you have done on the ISS?
17. What does a sunrise or sunset on Earth look like from space?
18. What is something that you miss about Earth?
19. Can you see stars from the ISS?
20. What does space sound like? Can you hear anything?
21. What should a student study in school to be an astronaut?
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 @xxxxxxxxxxxx
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 Center for the Advancement of Science in
Space (CASIS) 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 informal education venues. With the help of experienced
amateur radio volunteers, ISS crews speak directly with large audiences in a
variety of public forums. Before and during these radio contacts, students,
teachers, parents, and communities learn about space, space technologies,
and amateur radio. For more informa
tion, see www.ariss.org, www.amsat.org, and www.arrl.org.
Thank you & 73,
David - AA4KN
---
This email has been checked for viruses by Avast antivirus software.
https://www.avast.com/antivirus
------------------------------
Message: 5
Date: Wed, 6 Sep 2017 14:28:19 +0000 (UTC)
From: "R.T.Liddy" <k8bl@xxxxxxxxx.xxx>
To: Matthew Stevens <matthew@xxxxxxxxx.xxx>, AMSAT BB
<amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] Need Delaware
Message-ID: <1756223268.3892007.1504708099879@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
Matthew,
I was in DE in July and sent my QSOs to?LoTW. Didn't we work?
Bob ?K8BL
From: Matthew Stevens <matthew@xxxxxxxxx.xxx>
To: Mac A. Cody <maccody@xxx.xxx>
Cc: amsat-bb@xxxxx.xxx
Sent: Wednesday, September 6, 2017 12:44 AM
Subject: Re: [amsat-bb] Need Delaware
KC3FQF has been active on many passes the last few weeks, I worked him a
couple times Sunday evening on a mid-US overhead SO50 and FO29. He uploads
quickly to LOTW. Prior to that I'd only ever heard a QSL card only op from
Delaware.
- Matthew nj4y
Sent from my iPhone
> On Sep 5, 2017, at 23:01, Mac A. Cody <maccody@xxx.xxx> wrote:
>
> I would be interested in this, too, for the same reason.? Perhaps
> a sked could be set up?
>
> Thanks, also, and 73,
>
> Mac Cody / AE5PH
>
>> On 09/05/2017 10:40 PM, Carlos Cardon wrote:
>> After about a year and a half on the LEOs, I'm close to Satellite WAS, but
>> still need Delaware.? Wondering if anyone on the list knows of a
>> satellite-active ham in that state?
>>
>>?
>> Thanks and 73,
>>
>> Carlos
>>
>> W7QL
>>
>> _______________________________________________
>> 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
_______________________________________________
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: Wed, 6 Sep 2017 10:26:04 -0400
From: "Michael A. Foster" <akx2@xxxxx.xxx>
To: <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] AO-85 NA SSTV
Message-ID: <6EE0E3D68E394A2AA048EEFAEA79350E@xxxxxxxxx>
Content-Type: text/plain; charset="utf-8"
Hello All, What is the preferred decode mode in North America for SSTV on
AO-85? Tnx, Michael ? N8iup
------------------------------
Message: 7
Date: Wed, 6 Sep 2017 10:47:53 -0400
From: Rick Walter <wb3csy@xxxxx.xxx>
To: "Michael A. Foster" <akx2@xxxxx.xxx>
Cc: amsat-bb@xxxxx.xxx
Subject: Re: [amsat-bb] AO-85 NA SSTV
Message-ID: <D77D6376-1938-4BD4-9EC9-2873DE3FF351@xxxxx.xxx>
Content-Type: text/plain; charset=utf-8
Most seem to be using Robot 36
Rick WB3CSY FN10
Sent from Rick's iPhone 6S
"Great spirits have always encountered violent opposition from mediocre
minds" - Albert Einstein
"Any sufficiently advanced technology is indistinguishable from magic" -
Arthur C. Clarke
"Klaatu Barada Nikto" - The Day the Earth Stood Still
> On Sep 6, 2017, at 10:26 AM, Michael A. Foster <akx2@xxxxx.xxx> wrote:
>
> Hello All, What is the preferred decode mode in North America for SSTV on
AO-85? Tnx, Michael ? N8iup
> _______________________________________________
> 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: Wed, 6 Sep 2017 10:15:20 -0500
From: Matthew Stevens <matthew@xxxxxxxxx.xxx>
To: "R.T.Liddy" <k8bl@xxxxxxxxx.xxx>
Cc: AMSAT BB <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] Need Delaware
Message-ID: <29524DB2-EE1D-4CD4-8FB5-F163FBC490CA@xxxxxxxxx.xxx>
Content-Type: text/plain; charset=us-ascii
Yes we did! You were the first DE I'd worked that confirmed in LOTW. I was
talking about people who lived there and were available anytime for skeds.
73,
- Matthew nj4y
Sent from my iPhone
> On Sep 6, 2017, at 09:28, R.T.Liddy <k8bl@xxxxxxxxx.xxx> wrote:
>
> Matthew,
>
> I was in DE in July and sent my QSOs to
> LoTW. Didn't we work?
>
> Bob K8BL
>
>
> From: Matthew Stevens <matthew@xxxxxxxxx.xxx>
> To: Mac A. Cody <maccody@xxx.xxx>
> Cc: amsat-bb@xxxxx.xxx
> Sent: Wednesday, September 6, 2017 12:44 AM
> Subject: Re: [amsat-bb] Need Delaware
>
> KC3FQF has been active on many passes the last few weeks, I worked him a
couple times Sunday evening on a mid-US overhead SO50 and FO29. He uploads
quickly to LOTW. Prior to that I'd only ever heard a QSL card only op from
Delaware.
>
> - Matthew nj4y
>
> Sent from my iPhone
>
> > On Sep 5, 2017, at 23:01, Mac A. Cody <maccody@xxx.xxx> wrote:
> >
> > I would be interested in this, too, for the same reason. Perhaps
> > a sked could be set up?
> >
> > Thanks, also, and 73,
> >
> > Mac Cody / AE5PH
> >
> >> On 09/05/2017 10:40 PM, Carlos Cardon wrote:
> >> After about a year and a half on the LEOs, I'm close to Satellite WAS,
but
> >> still need Delaware. Wondering if anyone on the list knows of a
> >> satellite-active ham in that state?
> >>
> >>
> >> Thanks and 73,
> >>
> >> Carlos
> >>
> >> W7QL
> >>
> >> _______________________________________________
> >> 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
> _______________________________________________
> 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: Wed, 6 Sep 2017 13:16:55 -0400
From: Robert Bruninga <bruninga@xxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Finding a short in Coax to Antenna
Message-ID: <3f0202afee62983afd7112d18a3c3069@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset="UTF-8"
I used an MFJ Antenna Analyzer to quickly find the short in a 120? run of
coax to the roof.
Just tune for the lowest frequency where the meter dips to 0 Ohms. Then
calculate the quarterwave distance using the velocity factor for the coax.
>From downstairs it was around 2.1 MHz or a very long distance. Suspecting
it might be right at the Antenna, I avoided any ambiguity in trying to
measure at the antenna end by adding a ten foot length of coax onto the
analyzer and then measured the dip with that 10? shorted. Turns out it was
31 MHz.
Then used that 10? connected to the roof end of the coax and got the dip at
exactly the same 31 MHz showing the short was right at the connector.
Having the 10? length of test cable made the measurement much more friendly
at 31 MHz compared to maybe 900 MHz which it might have been 2 inches from
the analyzer? Which the analyzer couldn?t do anyway?
Bob, WB4APR
------------------------------
Message: 10
Date: Wed, 6 Sep 2017 13:41:03 -0400
From: Norm n3ykf <normanlizeth@xxxxx.xxx>
To: Robert Bruninga <bruninga@xxxx.xxx>
Cc: "<,amsat-bb@xxxxx.xxxxxxxx <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] Finding a short in Coax to Antenna
Message-ID:
<CAJUhCTOS_UDFkXj_m2RQOjnxsLA4XEbBsFLXHmuPX9-WOkjNGw@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset="UTF-8"
>From N1GNN:
Remember that manufacturers published values for velocity factor are
"nominal" and vary in "real life" from reality. It is not uncommon,
for example, to see the velocity factor vary from one end of a 500'
reel of coax to the other. Part of the problem is the inability of
coax spooling machines to maintain the same tension on the cable when
the reel is just being started (small winding radius) to when it is
finished (large winding radius).
Presently building UHF phase matching with rg-142. Book value? .7,
Actual retail price? .6.
Got this roll from from Skycraft, 50' for 24$. Probably why it's surplus.
Norm n3ykf
On Wed, Sep 6, 2017 at 1:16 PM, Robert Bruninga <bruninga@xxxx.xxx> wrote:
> I used an MFJ Antenna Analyzer to quickly find the short in a 120? run of
> coax to the roof.
>
>
>
> Just tune for the lowest frequency where the meter dips to 0 Ohms. Then
> calculate the quarterwave distance using the velocity factor for the coax.
>
>
>
> From downstairs it was around 2.1 MHz or a very long distance. Suspecting
> it might be right at the Antenna, I avoided any ambiguity in trying to
> measure at the antenna end by adding a ten foot length of coax onto the
> analyzer and then measured the dip with that 10? shorted. Turns out it was
> 31 MHz.
>
>
>
> Then used that 10? connected to the roof end of the coax and got the dip at
> exactly the same 31 MHz showing the short was right at the connector.
> Having the 10? length of test cable made the measurement much more friendly
> at 31 MHz compared to maybe 900 MHz which it might have been 2 inches from
> the analyzer? Which the analyzer couldn?t do anyway?
>
>
>
> Bob, WB4APR
> _______________________________________________
> 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: 11
Date: Wed, 6 Sep 2017 13:22:07 -0500
From: Zach Metzinger <zmetzing@xxxxx.xxx>
To: AMSAT-BB <AMSAT-BB@xxxxx.xxx>
Subject: [amsat-bb] A couple of nice AO-7 websites
Message-ID: <7ec8871c-e372-8a20-fcd0-51b716c32f34@xxxxx.xxx>
Content-Type: text/plain; charset=utf-8
For those of us who enjoy this grand old bird:
http://www.castor2.ca/07_News/headline_072914.html
and:
http://www.amsat.org/articles/g3ruh/122.html
Is anyone else a big fan of the old AMSAT articles with the blue
backgrounds? They load fast and remind me of the good ol' days of the
90s fledgling WWW.
--- Zach
N0ZGO
------------------------------
Message: 12
Date: Wed, 6 Sep 2017 13:24:13 -0500
From: Zach Metzinger <zmetzing@xxxxx.xxx>
To: AMSAT-BB <AMSAT-BB@xxxxx.xxx>
Subject: Re: [amsat-bb] A couple of nice AO-7 websites
Message-ID: <e0e68410-8193-d7c4-3450-58472ec48450@xxxxx.xxx>
Content-Type: text/plain; charset=utf-8
On 09/06/17 13:22, Zach Metzinger wrote:
> http://www.amsat.org/articles/g3ruh/122.html
Whoops! I cut and pasted the wrong URL.
http://aar29.free.fr/sat/ao7/history.php
--- Zach
N0ZGO
------------------------------
Message: 13
Date: Wed, 6 Sep 2017 18:48:52 +0000 (UTC)
From: wa4hfn@xxxxxxx.xxx
To: AMSAT <amsat-bb@xxxxx.xxx>
Cc: "WA4NVM, Rick" <wa4nvm@xxxxxxx.xxx>
Subject: [amsat-bb] GRID MASTER # 4
Message-ID:
<1715492164.38947259.1504723732959.JavaMail.zimbra@xxxxxxx.xxx>
Content-Type: text/plain; charset=utf-8
Congrats to AA5PK Glenn Miller has just made the Grid Master list
AWARD #4
Good JOB Glenn
for more info on awards go yo QRZ and type in my call WA4HFN or WA4NVM
------------------------------
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 221
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