| |
CX2SA > SATDIG 14.08.17 11:40l 795 Lines 29109 Bytes #999 (0) @ WW
BID : AMSATBB12201
Read: GUEST
Subj: AMSAT-BB-digest V12 201
Path: IW8PGT<IZ3LSV<IK6ZDE<VE2PKT<ON0AR<OZ5BBS<CX2SA
Sent: 170814/0930Z @:CX2SA.SAL.URY.SOAM #:16718 [Salto] FBB7.00e $:AMSATBB12201
From: CX2SA@CX2SA.SAL.URY.SOAM
To : SATDIG@WW
Today's Topics:
1. Re: Best SDR for satellite reception
(Patrick STODDARD (WD9EWK/VA7EWK))
2. Re: Best SDR for satellite reception (Norm n3ykf)
3. Modulation levels on AO-85 (Ronald G. Parsons)
4. Re: Modulation levels on AO-85 (Mike Diehl)
5. Re: Modulation levels on AO-85 (Jerry Buxton)
6. Re: Modulation levels on AO-85 (Joe)
7. Re: Modulation levels on AO-85 (Matthew Stevens)
8. QRV Roaming - CO, WY, SD (Scott Medbury)
9. Re: Modulation levels on AO-85 (R.T.Liddy)
10. Re: Best SDR for satellite reception
(Patrick STODDARD (WD9EWK/VA7EWK))
11. Upcoming ARISS contact with Takaishi City Central Public
Hall, Takaishi City, Japan (n4csitwo@xxxxxxxxx.xxxx
12. My experiences from HB0 (hb9wdf@xxxxxxx.xxx
----------------------------------------------------------------------
Message: 1
Date: Sun, 13 Aug 2017 21:56:04 +0000
From: "Patrick STODDARD (WD9EWK/VA7EWK)" <amsat-bb@xxxxxx.xxx>
To: "amsat-bb@xxxxx.xxxx <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] Best SDR for satellite reception
Message-ID:
<CAN6TEUc5fahQxaHQz0kqOMBnYWbLHYZ8LgAFHUR9hAFpcEkM3w@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset="UTF-8"
Hi Norm!
The best answer to the question is probably "it depends",
as there are many SDR devices that do well for different
purposes.
> Best SDR? Nooelec. The one in the aluminum box works best related to
> cost. Only downfall of the cheapie RTL's is that they drift with
> temperature. The aluminum box handles EMI/temperature swings well
> without a big investment.
>
>
?The cheapie Nooelec (or any of the RTL) dongles are the
best? Huh? Disagree. For receive-only situations, they can
do the job much of the time, but for some situations they
leave a lot to be desired. If price is the only concern, then
they would be the best - as in cheapest - SDR device.?
> Funcube dongles are pricy due to VAT. Nice, but not $200 worth of
> improvement, compared to the Nooelec.
>
>
?No VAT is assessed when those dongles are sold outside the
UK and European Union. You have to deal with currency
exchange rates as they ?are priced in pound sterling. Shipping
isn't horrible, as FCDs sent to the USA go via FedEx next-day
air service that is surprisingly inexpensive. For some
purposes, like being able to use the FoxTelem and FUNcube
Dashboard programs without needing to deal with virtual audio
cables etc. the FCD is a better option than a Nooelec dongle.
Another thing that the Nooelec (RTL) dongles lack is front-end
filtering. This was apparent to me when I tried using one as a
downlink receiver for SSB satellites, transmitting at no more
than 5 watts from an FT-817. The 817 would overload the Nooelec
dongles, and would not work properly until I stopped transmitting.
For working amateur satellites when I want to use an SDR receiver
on the downlink, I go with an FCD Pro+ or either version of the
SDRplay RSP receivers. All of these have front-end filtering that
can keep my 817s from interfering with hearing the downlinks. I
take care to never transmit on the band I'm receiving on with these
SDR receivers, and go through a 2m/70cm diplexer since my two-
radio setup connects to an Elk log periodic. I have used this at
home and on the road, working SSB satellites as well as copying
AO-85's downlink with both FM voice and data.
In terms of costs, the SDRplay RSP1 probably splits the difference
between the price of the Nooelec dongles and the FCD Pro+, available
from HRO in the US currently for $99.95. IMO it does a decent job. Not
the best SDR device on the market overall, but it is a viable option
for use with amateur satellites, and probably other satellites.
The SDRplay RSP2 comes in two versions - the Pro version comes in a
steel case for $192.95, and the non-pro RSP2 is in a plastic case
with a lining sprayed on the inside of the case for $169.95.
73!
Patrick WD9EWK/VA7EWK
http://www.wd9ewk.net/
Twitter: @xxxxxx or http://twitter.com/WD9EWK
------------------------------
Message: 2
Date: Sun, 13 Aug 2017 17:24:43 -0500
From: Norm n3ykf <normanlizeth@xxxxx.xxx>
To: amsat-bb <amsat-bb@xxxxxx.xxx>
Cc: "amsat-bb@xxxxx.xxxx <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] Best SDR for satellite reception
Message-ID:
<CAJUhCTNhz4PvjNUZ4ZN-KgdZ1nq1VexoLXu5fgKVaxEq=wKmzA@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset="UTF-8"
Thanks for your opinion! We all get one. Particularly if you've paid the $$$$.
Think I'll continue with today's mission: playing with my toys.
It's too nice a day to waste sending useless emails, comparing dirty
navel hair. Sunny, 75 degrees F no rain. It'd still be 95F if I were
in EL89.
Being retired rocks.
Today's play toys? Anritsu Sitemaster S113b and a pc (their line sweep
tools suite), outside with the antennas. Learning more about Phillip
Smith's chart and why he chose to make it sooooooo curvy.
Will be in your footprint next month.
Norm n3ykf
------------------------------
Message: 3
Date: Sun, 13 Aug 2017 17:55:03 -0500
From: "Ronald G. Parsons" <w5rkn@xxxxx.xxx>
To: "AMSAT-BB" <AMSAT-BB@xxxxx.xxx>
Subject: [amsat-bb] Modulation levels on AO-85
Message-ID: <3F2986F289194ED3B3635BEFE4D1FBD5@xxxxxxxxx>
Content-Type: text/plain; charset="utf-8"
I?ve noticed lately that many stations on AO-85 have barely audible
modulation. Yet other stations have clear audio with good quieting. I have
heard the some manufacturers of hand-held and mobile rigs are setting their
maximum deviation to 5 kHz or even less. I have noticed the same effect on
local repeaters. Has anyone done any tests of the deviation required for
reasonable quieting on AO-85? Or are more stations using lower power than in
the past?
Ron W5RKN
------------------------------
Message: 4
Date: Sun, 13 Aug 2017 16:13:15 -0700
From: Mike Diehl <diehl.mike.a@xxxxx.xxx>
To: "Ronald G. Parsons" <w5rkn@xxxxx.xxx>
Cc: AMSAT-BB <AMSAT-BB@xxxxx.xxx>
Subject: Re: [amsat-bb] Modulation levels on AO-85
Message-ID: <14754102-22A3-4CE3-B73A-775C4093CF4A@xxxxx.xxx>
Content-Type: text/plain; charset=utf-8
Not everyone runs QRO so sometimes you might have to turn up that audio gain
a little.
73,
Mike Diehl
AI6GS
> On Aug 13, 2017, at 3:55 PM, Ronald G. Parsons <w5rkn@xxxxx.xxx> wrote:
>
> I?ve noticed lately that many stations on AO-85 have barely audible
modulation. Yet other stations have clear audio with good quieting. I have
heard the some manufacturers of hand-held and mobile rigs are setting their
maximum deviation to 5 kHz or even less. I have noticed the same effect on
local repeaters. Has anyone done any tests of the deviation required for
reasonable quieting on AO-85? Or are more stations using lower power than in
the past?
>
> Ron W5RKN
> _______________________________________________
> 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: 5
Date: Sun, 13 Aug 2017 18:14:58 -0500
From: Jerry Buxton <n0jy@xxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: Re: [amsat-bb] Modulation levels on AO-85
Message-ID: <8ec6be0c-3bfd-fc80-5dac-a096dd11d2cb@xxxxx.xxx>
Content-Type: text/plain; charset=utf-8
5 kHz is the nominal "wide" setting for ham radio equipment on the
VHF/UHF bands. So a rig set to 5 kHz is what we all usually expect.
5 kHz deviation with 3 kHz audio (the usual top for most voice) would be
about 16 kHz bandwidth. The deviation number alone is not equal to
bandwidth. ("Carson's Rule")
Low audio is usually just that, not talking loud enough, not talking
into the mic properly, mic gain setting too low, food in the mic hole, etc.
Jerry Buxton, N?JY
On 8/13/2017 17:55, Ronald G. Parsons wrote:
> I?ve noticed lately that many stations on AO-85 have barely audible
modulation. Yet other stations have clear audio with good quieting. I have
heard the some manufacturers of hand-held and mobile rigs are setting their
maximum deviation to 5 kHz or even less. I have noticed the same effect on
local repeaters. Has anyone done any tests of the deviation required for
reasonable quieting on AO-85? Or are more stations using lower power than in
the past?
>
> Ron W5RKN
> _______________________________________________
> 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: Sun, 13 Aug 2017 18:18:10 -0500
From: Joe <nss@xxx.xxx>
To: Jerry Buxton <n0jy@xxxxx.xxx>, amsat-bb@xxxxx.xxx
Subject: Re: [amsat-bb] Modulation levels on AO-85
Message-ID: <785fd0b6-841e-9206-8703-0a22035b8593@xxx.xxx>
Content-Type: text/plain; charset=utf-8; format=flowed
Plus a LOT of people are running Narrow Modulation now.
Joe WB9SBD
Sig
The Original Rolling Ball Clock
Idle Tyme
Idle-Tyme.com
http://www.idle-tyme.com
On 8/13/2017 6:14 PM, Jerry Buxton wrote:
> 5 kHz is the nominal "wide" setting for ham radio equipment on the
> VHF/UHF bands. So a rig set to 5 kHz is what we all usually expect.
> 5 kHz deviation with 3 kHz audio (the usual top for most voice) would be
> about 16 kHz bandwidth. The deviation number alone is not equal to
> bandwidth. ("Carson's Rule")
> Low audio is usually just that, not talking loud enough, not talking
> into the mic properly, mic gain setting too low, food in the mic hole, etc.
>
> Jerry Buxton, N?JY
>
> On 8/13/2017 17:55, Ronald G. Parsons wrote:
>> I?ve noticed lately that many stations on AO-85 have barely audible
modulation. Yet other stations have clear audio with good quieting. I have
heard the some manufacturers of hand-held and mobile rigs are setting their
maximum deviation to 5 kHz or even less. I have noticed the same effect on
local repeaters. Has anyone done any tests of the deviation required for
reasonable quieting on AO-85? Or are more stations using lower power than in
the past?
>>
>> Ron W5RKN
>> _______________________________________________
>> 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: 7
Date: Sun, 13 Aug 2017 19:25:16 -0400
From: Matthew Stevens <matthew@xxxxxxxxx.xxx>
To: Joe <nss@xxx.xxx>
Cc: amsat-bb@xxxxx.xxx
Subject: Re: [amsat-bb] Modulation levels on AO-85
Message-ID: <8A5B1039-1119-4F59-88ED-C883C043A06C@xxxxxxxxx.xxx>
Content-Type: text/plain; charset=utf-8
Like Jerry said, its more an issue with mic gain or poor mic technique than
anything else.
- Matthew nj4y
Sent from my iPad
> On Aug 13, 2017, at 19:18, Joe <nss@xxx.xxx> wrote:
>
> Plus a LOT of people are running Narrow Modulation now.
> Joe WB9SBD
> Sig
> The Original Rolling Ball Clock
> Idle Tyme
> Idle-Tyme.com
> http://www.idle-tyme.com
>> On 8/13/2017 6:14 PM, Jerry Buxton wrote:
>> 5 kHz is the nominal "wide" setting for ham radio equipment on the
>> VHF/UHF bands. So a rig set to 5 kHz is what we all usually expect.
>> 5 kHz deviation with 3 kHz audio (the usual top for most voice) would be
>> about 16 kHz bandwidth. The deviation number alone is not equal to
>> bandwidth. ("Carson's Rule")
>> Low audio is usually just that, not talking loud enough, not talking
>> into the mic properly, mic gain setting too low, food in the mic hole, etc.
>>
>> Jerry Buxton, N?JY
>>
>>> On 8/13/2017 17:55, Ronald G. Parsons wrote:
>>> I?ve noticed lately that many stations on AO-85 have barely audible
modulation. Yet other stations have clear audio with good quieting. I have
heard the some manufacturers of hand-held and mobile rigs are setting their
maximum deviation to 5 kHz or even less. I have noticed the same effect on
local repeaters. Has anyone done any tests of the deviation required for
reasonable quieting on AO-85? Or are more stations using lower power than in
the past?
>>>
>>> Ron W5RKN
>>> _______________________________________________
>>> 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: 8
Date: Sun, 13 Aug 2017 18:29:41 -0500
From: "Scott Medbury" <smedbury@xxxxxxxxxx.xxx>
To: <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] QRV Roaming - CO, WY, SD
Message-ID: <000001d3148c$0a1ebd40$1e5c37c0$@xxx>
Content-Type: text/plain; charset="us-ascii"
Beginning on August 20 thru August 26 I will be QRV from DM79, DN70, DN71,
DN72, DN62, DN73, DN74, DN83, DN84 on SO-50 and if I can AO-85. I will only
be using handheld radios and antennas.
I am not sure where I will be and when except that I will be in Casper, WY,
at ground zero on Monday the 21st for the eclipse and Devil's Tower late on
the 21st possibly making late passes from the Devil's Tower monument.
Later in the week, I will be at Mt. Rushmore and Wind Cave National Parks
and several National Trails including Fort Laramie.
73 .. Scott KD5FBA
Scott Medbury
KD5FBA
16802 Aprilmont Drive
Sugar Land, TX 77498-1941
------------------------------
Message: 9
Date: Mon, 14 Aug 2017 00:33:37 +0000 (UTC)
From: "R.T.Liddy" <k8bl@xxxxxxxxx.xxx>
To: Matthew Stevens <matthew@xxxxxxxxx.xxx>, Joe <nss@xxx.xxx>
Cc: "amsat-bb@xxxxx.xxxx <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] Modulation levels on AO-85
Message-ID: <1848079649.952706.1502670817516@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
"...food in the mic hole, etc."!!! ?LOL!!! ?- Bob ?K8BL
From: Matthew Stevens <matthew@xxxxxxxxx.xxx>
To: Joe <nss@xxx.xxx>
Cc: amsat-bb@xxxxx.xxx
Sent: Sunday, August 13, 2017 7:25 PM
Subject: Re: [amsat-bb] Modulation levels on AO-85
Like Jerry said, its more an issue with mic gain or poor mic technique than
anything else.
- Matthew nj4y
Sent from my iPad
> On Aug 13, 2017, at 19:18, Joe <nss@xxx.xxx> wrote:
>
> Plus a LOT of people are running Narrow Modulation now.
> Joe WB9SBD
> Sig
> The Original Rolling Ball Clock
> Idle Tyme
> Idle-Tyme.com
> http://www.idle-tyme.com
>> On 8/13/2017 6:14 PM, Jerry Buxton wrote:
>> 5 kHz is the nominal "wide" setting for ham radio equipment on the
>> VHF/UHF bands.? So a rig set to 5 kHz is what we all usually expect.
>> 5 kHz deviation with 3 kHz audio (the usual top for most voice) would be
>> about 16 kHz bandwidth.? The deviation number alone is not equal to
>> bandwidth.? ("Carson's Rule")
>> Low audio is usually just that, not talking loud enough, not talking
>> into the mic properly, mic gain setting too low, food in the mic hole, etc.
>>
>> Jerry Buxton, N?JY
>>
>>> On 8/13/2017 17:55, Ronald G. Parsons wrote:
>>> I?ve noticed lately that many stations on AO-85 have barely audible
modulation. Yet other stations have clear audio with good quieting. I have
heard the some manufacturers of hand-held and mobile rigs are setting their
maximum deviation to 5 kHz or even less. I have noticed the same effect on
local repeaters. Has anyone done any tests of the deviation required for
reasonable quieting on AO-85? Or are more stations using lower power than in
the past?
>>>
>>> Ron W5RKN
>>> _______________________________________________
>>> 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
_______________________________________________
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
| | Virus-free. www.avast.com |
------------------------------
Message: 10
Date: Mon, 14 Aug 2017 00:44:35 +0000
From: "Patrick STODDARD (WD9EWK/VA7EWK)" <amsat-bb@xxxxxx.xxx>
To: "amsat-bb@xxxxx.xxxx <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] Best SDR for satellite reception
Message-ID:
<CAN6TEUczJXJQuHdaQFROMbmB5zkHW-EEXtLgBOww1xHC2cdecQ@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset="UTF-8"
?Norm,?
Thanks for your opinion! We all get one. Particularly if you've paid the
> $$$$.
>
> ?
?Nobody has to pay to have an opinion, of course. When it comes
to offering advice on using SDRs, in particular for ham satellite
downlinks, yes - I have paid a fair amount to try different
options. I wanted to try SDR for satellite downlinks, and went
through the process of trying different options. This required
some monetary investment, but I learned a lot for my own
satellite operations. It has also let me offer informed opinions
on different options I have tried.
I have to admit when I saw your bold pronouncement that the Nooelec
dongle was the best SDR, my initial reaction was laughter. Between
my own experiences and reading so many posts in different forums on
the disappointment in the performance of these dongles for ham
satellite downlinks, it was funny to see that. Unfortunately, someone
may see your post, try a Nooelec dongle as the downlink receiver to
work ham satellites, and come away frustrated when it doesn't perform
well.
Enjoy your nice weather, and your toys...
Patrick WD9EWK/VA7EWK
http://www.wd9ewk.net/
Twitter: @xxxxxx or http://twitter.com/WD9EWK
------------------------------
Message: 11
Date: Mon, 14 Aug 2017 00:06:01 -0400
From: <n4csitwo@xxxxxxxxx.xxx>
To: <ariss-press@xxxxx.xxx>, <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Upcoming ARISS contact with Takaishi City Central
Public Hall, Takaishi City, Japan
Message-ID: <D1F22BA8375F49D3BEDFF415CF40E6DE@xxx>
Content-Type: text/plain; charset="iso-8859-1"
An International Space Station school contact has been planned with
participants at Takaishi City Central Public Hall, Takaishi City, Japan on
14 Aug. The event is scheduled to begin at approximately 10:37 UTC. The
duration of the contact is approximately 9 minutes and 30 seconds. The
contact will be direct between NA1SS and 8N3NA. The contact should be
audible over Japan 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.
Takaishi city central public hall is located in the center of Takaishi city.
We are ready to open the door of public hall to every school child. Almost
all the boy and girls in Takaishi city are interested in nature, science and
space.
Participants will ask as many of the following questions as time allows:
1. Why did you want to be an astronaut?
2. To be an astronaut how I spend my school days?
3. What experiment are you doing?
4. Are there any difficulties in space walking?
5. How do you feel in zero gravity?
6. Are the stars beautiful like we watch them from the earth?
7. Are the stars shining clearly?
8. What time do you usually get up and go to bed in space?
9. What color is the earth now?
10. How do you enjoy your life in zero gravity?
11. What kind of space food do you like? Taste good?
12. Can you take a break? What do you do for fun?
13. What exercise are you doing to avoid weak bones?
14. What do you do on ISS?
15. How heavy is the space suit?
16. You are an astronaut now, you've changed a lot you used to be?
17. How do you sleep?
18. How does the earth look like?
19. Would you tell me your dreams?
20. Is the earth beautiful?
21. How do the butterflies and dragonflies fly in zero gravity?
22. Which do you eat a lot, in space or on the earth?
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):
1. Fleet Science Center, BE WISE Program, San Diego, CA, direct via
KJ6KDZ
The ISS callsign is presently scheduled to be NA1SS
The scheduled astronaut is Paolo Nespoli IZ?JPA
Contact is a go for: Sat 2017-08-19 16:44 UTC
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: 12
Date: Mon, 14 Aug 2017 11:21:38 +0200 (CEST)
From: "hb9wdf@xxxxxxx.xxx <hb9wdf@xxxxxxx.xx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] My experiences from HB0
Message-ID:
<625850829.12615.1502702498310.JavaMail.webmail@xxxxxxx.xx>
Content-Type: text/plain; charset=UTF-8
I got many mails with the question, why HB0 is so rare on satellite. So here
my experience from my last activation in this tiny country.
It was the second activation of HB0. My setup was a FT-100D / FT-817 combo,
the Arrow Antenna and an 18Ah LiPo power pack. Before I went to
Liechtenstein, I made several tests with the equipment from HB9. A day
before my activation, I had a sked with Chris NK1K on FO-29. It was an
success.
Liechtenstein is very difficult for satellite. The ground of the valley is
460 m ASL high, between 2-5km wide and about 25km long. The mountains around
the valley are over 2000m ASL high and steep. The public places are rare and
tiny. The solution for satellite operation is to go on the top of the
mountain. For hiking, you need many hours o reach the top of the mountains.
But there is a cable car (the only one in the summertime) and serves the
mountain "Sareiserjoch", which is 2000m ASL high. The panoramic view from
there is amazing. But still not the best place for satellite operation.
There is a mountain in the north / west side, who take over 10 degrees of
elevation. To high for the North Atlantic pass.
The service of the cable car is open only between 8am and 17pm. There is no
mountain lodge for an over night stay. Camping in the higher mountains are
difficult and can be dangerous for an one man expedition. I have no
experiences in camping and dealing with the changing weather conditions in
the higher mountains...
You see: The possibilities for HB0 on satellite are very limited.
Last Sunday I was ready at 8:30 am for start the activation from HB0. My
first satellit was SO-50. I had a qso with J?r?me F4DXV - after that I was
very surprised: many stations called CQ and no one got an answer each other.
I had no pileup and heard my signal very clearly on the bird. I only had two
qso on this pass.
After SO-50 I was qrv on AO-85. I met J?r?me again and - after the qso, I
was the only one on this satellite who called. And AO-85 was in a very good
shape. I think, that many stations don't understand the deal with doppler:
On SO-50 they don't find the downlink, on AO-85 the uplink.
Then I had a sked with Chris NK1K on AO-7. The pass of AO-7 was at the edge
of the mountain on the north / west side of my place. Most of the time, the
satellite was a little bit behind the mount. I heard a very weak signal from
Chris and no downlink from my own signal. Then I made a big misstake and
powered up my TX to high. The LiPo got an overload and shutted down. For a
reset I had to connect the power supply. But this device was still in
Switzerland in my home on my shacktable. I was very frustrated.
I had a new idea: I went down with the cable car, jumped into my car and
drove to Gaflei. Gaflei is only 1500m ASL high. But good enough for the
passes in the west. I plugged my station at the car battery.
But the tiny parking lot crowded very fast. Many cars were around me. The DC
cable was to short for a good position of my station. Consequently the
activation on FO-29 was a disaster. I had a big pile up. But I got strong
interferences and had problems to listening on my downlink.
That was the reason why I stopped my activation and returned to my home.
Yes, I was very frustrated at this time ...
Now I have plans to optimize my station. And I have a new contact to an OM
in HB0. Maybe I get a better opportunity in the future.
73s Michael, hb9wdf
------------------------------
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 201
*****************************************
Read previous mail | Read next mail
| |
