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CX2SA > SATDIG 16.06.20 04:40l 622 Lines 21230 Bytes #999 (0) @ WW
BID : AMSATBB15196
Read: GUEST
Subj: AMSAT-BB-digest V15 196
Path: IW8PGT<IZ3LSV<DB0ERF<DB0RES<ON0AR<OZ5BBS<CX2SA
Sent: 200616/0239Z @:CX2SA.SAL.URY.SOAM #:33482 [Salto] FBB7.00e $:AMSATBB15196
From: CX2SA@CX2SA.SAL.URY.SOAM
To : SATDIG@WW
Today's Topics:
1. WTB: SSB-electronic SP70 (Joseph Trombino, Jr)
2. FUNCube Dongle Pro+ (Jim Sanford)
3. Re: Alpha Spid Rotator (Ryan Butler)
4. Estonia's TTU100 X band satellite questions
(k.swaggart@???????.????
5. Re: Break-down of APRS digipeats & ARISS.net (Scott)
6. Re: Estonia's TTU100 X band satellite questions (Graham Shirville)
7. Raspberry Pi FUNcube satellite telemetry decoder (M5AKA)
8. Re: Break-down of APRS digipeats & ARISS.net (Robert MacHale)
9. Re: Estonia's TTU100 X band satellite questions (Daniel Est?vez)
10. Re: Estonia's TTU100 X band satellite questions
(k.swaggart@???????.????
11. Funcube Dongle site (Mike Hoblinski)
12. Next Rocket Lab launch (Wendy and Terry Osborne)
----------------------------------------------------------------------
Message: 1
Date: Sun, 14 Jun 2020 11:40:39 -0400
From: "Joseph Trombino, Jr" <w2kj@?????????.???>
To: amsat-bb@?????.???
Subject: [amsat-bb] WTB: SSB-electronic SP70
Message-ID: <51F9DC97-6FE9-4E91-8B6D-CDFDDDC15E62@?????????.???>
Content-Type: text/plain; charset=us-ascii
Howdy Gang.
Want to buy an SSB-Electronic SP70 preamp for 432Mhz.
Unit should be in good shape and working FB.
Will pay with PayPal.
Many thanks.
73, Joe W2KJ
------------------------------
Message: 2
Date: Sun, 14 Jun 2020 18:55:43 -0400
From: Jim Sanford <wb4gcs@??????.???>
To: 'Amsat - BBs' <amsat-bb@?????.???>
Subject: [amsat-bb] FUNCube Dongle Pro+
Message-ID: <db457fc5-a9df-a17f-28c3-cda494363e43@??????.???>
Content-Type: text/plain; charset=utf-8; format=flowed
All:
I've been seeking to buy one of these.? Any site that comes up in Google
directs me to a site which cites names.co.uk and tries to sell me this
domain.
Has the FUNCube dongle disappeared, or am I being spoofed? Anybody have
a direct link to purchase and get support?
Thanks & 73,
Jim
wb4gcs@?????.???
--
This email has been checked for viruses by Avast antivirus software.
https://www.avast.com/antivirus
------------------------------
Message: 3
Date: Sun, 14 Jun 2020 19:17:55 -0500
From: Ryan Butler <rbutler@????.???>
To: Edward R Cole <kl7uw@?????????.???>
Cc: amsat-bb <AMSAT-BB@?????.???>
Subject: Re: [amsat-bb] Alpha Spid Rotator
Message-ID:
<CAGkenmcqedOyg=psR9FH4D28ZTdAUDqo9W-74WCKc=pLpxkmUw@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
Thanks for all the replies and good information. Following up, almost
every cable I've seen, especially anything with larger gauge wires, seems
like the outer jacket is larger than what the cable glands on the rotor
will take, is everyone just stripping the outer jacket and feeding into the
terminal blocks the individual wires and sealing the exposed section
outside in some way? Replacing the cable glands and making the pass
through holes larger?
Ryan, NF0T
On Sat, Jun 6, 2020 at 11:30 AM Edward R Cole via AMSAT-BB <
amsat-bb@?????.???> wrote:
> Note: I am using the Alpha-Spid RAK as azimuth rotator on eme for 50
> and 144 MHz. No experience with RAS.
>
> Only have the RAK installed for my 144-eme array of four XP yagis at
> this point.
>
> I have about 150-foot cable run and using 8-conductor standard
> rotator cable (only four needed by the Spid) I had excessive voltage
> loss on the motor lines (dropped to 8vdc). Even paralleling some of
> the unused wires did not solve. I finally use a pair of No. 10 wires
> to get 12v to the rotator.
>
> I run 18vac into the controller (which has a bridge rectifier) to
> obtain 24vdc unloaded on output. Loaded the voltage sags to about
> 18vdc at the controller, but runs the rotator fine. Use the No. 20
> control wires in the original rotor cable for indication with no issues.
>
> I have the 1-degree resolution rotator (good enough for 50 or
> 144-MHz). Previously, I ran a Ham-IV which only provides 5-degree
> movement due to the brake system. Ham-IV was challenged for torque
> by the eme array. Spid seems to handle that FB.
>
> 73, Ed - KL7UW
> http://www.kl7uw.com
> Dubus-NA Business mail:
> dubususa@?????.???
>
> _______________________________________________
> 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: 4
Date: Mon, 15 Jun 2020 09:15:23 -0700
From: <k.swaggart@???????.???>
To: "AMSAT-BB" <amsat-bb@?????.???>
Subject: [amsat-bb] Estonia's TTU100 X band satellite questions
Message-ID: <02e901d64330$2d248e70$876dab50$@???????.???>
Content-Type: text/plain; charset="us-ascii"
In a tweet from AMSAT-UK I saw that an Estonian university will launch their
TTU100 cubesat on Friday with a X-band downlink on 10465 MHz. Thought it
would be an interesting challenge to aim my X-band dish with a sat TV LNB at
closest point of approach and see if I can see anything on the SDR
waterfall. My LNB output would be at 715 MHz and the Doppler at AOS would be
approximately +533 KHz!
A couple of questions before I start configuring the equipment:
* Will the 10465 MHz downlink be on during North America passes or
only when in range of the Estonian ground station?
* What is the modulation? It's an imaging satellite so I expect it
will be high data rate.
73,
Ken, W7KKE
------------------------------
Message: 5
Date: Mon, 15 Jun 2020 12:28:18 -0400
From: Scott <scott23192@?????.???>
To: amsat-bb@?????.???
Subject: Re: [amsat-bb] Break-down of APRS digipeats & ARISS.net
Message-ID:
<CAJCSnObhWBhagPHPZBzwMS-Ax_8rZOtwJt-j5rxNLGq8ucZyew@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
Big thanks to Daniele (IU5HKX) for translating this doc to Italian!
The link to the '-IT' version is:
https://www.qsl.net/k/k4kdr//how-to/ariss-aprs-explained-it.pdf
-Scott, K4KDR
------------------------------
Message: 6
Date: Mon, 15 Jun 2020 17:29:34 +0100
From: Graham Shirville <graham@?????????.???>
To: k.swaggart@???????.???? AMSAT-BB <amsat-bb@?????.???>
Subject: Re: [amsat-bb] Estonia's TTU100 X band satellite questions
Message-ID: <039dcb8c-36ca-3d6d-0018-fdbefe27437b@?????????.???>
Content-Type: text/plain; charset=utf-8; format=flowed
Hi Ken,
The IARU website has this info
http://www.amsatuk.me.uk/iaru/finished_detail.php?serialnum=565 maybe
you can contact the operator to find out the likely operating schedule.
Tracking the doppler will be fun and also keeping the dish within the
required 1- 2 degree pointing? accuracy is also likely to be a
challenge. However it appears that there may be a number of other 10GHz
downlinks being planned for low earth orbit so all experience will be
extremely valuable.
73
Graham G3VZV
On 15/06/2020 17:15, Ken Swaggart W7KKE via AMSAT-BB wrote:
> In a tweet from AMSAT-UK I saw that an Estonian university will launch their
> TTU100 cubesat on Friday with a X-band downlink on 10465 MHz. Thought it
> would be an interesting challenge to aim my X-band dish with a sat TV LNB at
> closest point of approach and see if I can see anything on the SDR
> waterfall. My LNB output would be at 715 MHz and the Doppler at AOS would be
> approximately +533 KHz!
>
>
>
> A couple of questions before I start configuring the equipment:
>
>
>
> * Will the 10465 MHz downlink be on during North America passes or
> only when in range of the Estonian ground station?
> * What is the modulation? It's an imaging satellite so I expect it
> will be high data rate.
>
>
>
> 73,
>
> Ken, W7KKE
>
> _______________________________________________
> 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: Mon, 15 Jun 2020 16:35:02 +0000 (UTC)
From: M5AKA <m5aka@?????.??.??>
To: AMSAT BB <amsat-bb@?????.???>
Subject: [amsat-bb] Raspberry Pi FUNcube satellite telemetry decoder
Message-ID: <2038894692.1961986.1592238902825@????.?????.???>
Content-Type: text/plain; charset=UTF-8
The FUNcube Team has announced the availability of FUNcube CubeSat satellite
telemetry decoder software for the popular Raspberry Pi computer board
https://amsat-uk.org/2020/06/15/raspberry-pi-funcube-satellite-telemetry-decod
er/
Indian radio amateur starts petition for licence change
https://amsat-uk.org/2020/06/13/indian-radio-amateur-starts-petition-for-licen
ce-change/
15 Canadian CubeSats to launch from 2021
https://amsat-uk.org/2020/06/10/15-canadian-cubesats/
Tony Hutchison VK5ZAI in Queen?s Birthday honours list
https://amsat-uk.org/2020/06/09/vk5zai-in-queens-birthday-honours/
Longjiang-2 / LO-94: Journey to the Moon
https://amsat-uk.org/2020/06/06/longjiang-2-lo-94-journey-to-the-moon/
Trevor M5AKA----
AMSAT-UK?http://amsat-uk.org/
Twitter?https://twitter.com/AmsatUK
Facebook?https://facebook.com/AmsatUK
YouTube?https://youtube.com/AmsatUK
----
------------------------------
Message: 8
Date: Mon, 15 Jun 2020 16:56:41 +0000 (UTC)
From: Robert MacHale <robert.machale@?????.???>
To: <amsat-bb@?????.???>, Scott <scott23192@?????.???>
Subject: Re: [amsat-bb] Break-down of APRS digipeats & ARISS.net
Message-ID: <955192787.1109491.1592240201988@????.?????.???>
Content-Type: text/plain; charset=UTF-8
Well done - Scott. Thanks for sharing!
Robert MacHale. KE6BLR Ham Radio License.?http://www.aprsat.com/predict
.?http://www.spaceCommunicator.club?
. Supporting Boy Scout Merit Badges in Radio, Robotics, and Space Exploration
On Friday, June 12, 2020, 06:33:17 PM PDT, Scott via AMSAT-BB
<amsat-bb@?????.???> wrote:
As I was replying to a question about the ISS digipeater, and in particular
the ARRIS.net website, I thought maybe the explanation might benefit others
new to making APRS contacts via satellite.
Kit (W3KIT) was kind enough to give me the ok to use my reply to him as a
way to share with others that might be interested in this kind of thing.
I've uploaded the 1-page explanation with an annotated screen shot to:
https://www.qsl.net/k/k4kdr//how-to/ariss-aprs-explained.pdf
73!
-Scott,? K4KDR
_______________________________________________
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: 9
Date: Mon, 15 Jun 2020 22:38:19 +0200
From: Daniel Est?vez <daniel@????????.???>
To: amsat-bb@?????.???
Subject: Re: [amsat-bb] Estonia's TTU100 X band satellite questions
Message-ID: <7820fadc-b079-ca61-6d09-54262a0641ef@????????.???>
Content-Type: text/plain; charset=utf-8
Hi Graham and Ken,
I'm also looking at this satellite with interest. Maybe I'm too
optimistic, but I'm thinking that hand aiming a 60cm dish might work (at
least to receive some signal). Maybe we could even convince the
operators to run some tests for us outside of Estonia.
I don't want to overwhelm the operators with several emails asking the
same questions, so if you get in touch with them, please share your
findings.
According to the IARU coordination sheet, the modulation will be OQPSK
with rates between 62.5kbps and 20Mbps. For the higher rates, a decent
high bandwidth SDR is needed. The lowest rate is easiest to copy, and
still provides a decent challenge in my opinion, so something to
consider if we ask for some specific tests for interested Amateurs.
I could build a decoder for the modulation if we get some documentation
or if it looks like something standard (maybe it uses CCSDS?). So if you
catch a recording, please do share.
Best,
Dani EA4GPZ.
El 15/6/20 a las 18:29, Graham Shirville via AMSAT-BB escribi?:
> Hi Ken,
>
> The IARU website has this info
> http://www.amsatuk.me.uk/iaru/finished_detail.php?serialnum=565 maybe
> you can contact the operator to find out the likely operating schedule.
>
> Tracking the doppler will be fun and also keeping the dish within the
> required 1- 2 degree pointing? accuracy is also likely to be a
> challenge. However it appears that there may be a number of other 10GHz
> downlinks being planned for low earth orbit so all experience will be
> extremely valuable.
>
> 73
>
> Graham G3VZV
>
> On 15/06/2020 17:15, Ken Swaggart W7KKE via AMSAT-BB wrote:
>> In a tweet from AMSAT-UK I saw that an Estonian university will launch
>> their
>> TTU100 cubesat on Friday with a X-band downlink on 10465 MHz. Thought it
>> would be an interesting challenge to aim my X-band dish with a sat TV
>> LNB at
>> closest point of approach and see if I can see anything on the SDR
>> waterfall. My LNB output would be at 715 MHz and the Doppler at AOS
>> would be
>> approximately +533 KHz!
>>
>> ?
>> A couple of questions before I start configuring the equipment:
>>
>> ?
>> *??? Will the 10465 MHz downlink be on during North America passes or
>> only when in range of the Estonian ground station?
>> *??? What is the modulation? It's an imaging satellite so I expect it
>> will be high data rate.
>>
>> ?
>> 73,
>>
>> Ken, W7KKE
>>
>> _______________________________________________
>> 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
> _______________________________________________
> 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: 10
Date: Mon, 15 Jun 2020 14:56:18 -0700
From: <k.swaggart@???????.???>
To: 'Daniel Est?vez' <daniel@????????.???>, "AMSAT-BB"
<amsat-bb@?????.???>
Subject: Re: [amsat-bb] Estonia's TTU100 X band satellite questions
Message-ID: <04f601d6435f$cd39a6f0$67acf4d0$@???????.???>
Content-Type: text/plain; charset="UTF-8"
I've sent an email to the point of contact on the IARU web page for TTU100
and will relay any info if I receive a reply. If the X-band transmitter is
on over this part of the planet I'll be using a 68 x 61 cm offset feed dish
and initially just let the satellite fly through the beam. If I see a decent
signal I'll get serious about trying to track it.
I'm using an AirSpy connected to the LNB output. If I capture a I/Q
recording I'll post a link for anyone interested.
73,
Ken, W7KKE
-----Original Message-----
From: AMSAT-BB <amsat-bb-bounces@?????.???> On Behalf Of Daniel Est?vez via
AMSAT-BB
Sent: Monday, June 15, 2020 13:38
To: amsat-bb@?????.???
Subject: Re: [amsat-bb] Estonia's TTU100 X band satellite questions
Hi Graham and Ken,
I'm also looking at this satellite with interest. Maybe I'm too optimistic,
but I'm thinking that hand aiming a 60cm dish might work (at least to
receive some signal). Maybe we could even convince the operators to run some
tests for us outside of Estonia.
I don't want to overwhelm the operators with several emails asking the same
questions, so if you get in touch with them, please share your findings.
According to the IARU coordination sheet, the modulation will be OQPSK with
rates between 62.5kbps and 20Mbps. For the higher rates, a decent high
bandwidth SDR is needed. The lowest rate is easiest to copy, and still
provides a decent challenge in my opinion, so something to consider if we
ask for some specific tests for interested Amateurs.
I could build a decoder for the modulation if we get some documentation or
if it looks like something standard (maybe it uses CCSDS?). So if you catch
a recording, please do share.
Best,
Dani EA4GPZ.
El 15/6/20 a las 18:29, Graham Shirville via AMSAT-BB escribi?:
> Hi Ken,
>
> The IARU website has this info
> http://www.amsatuk.me.uk/iaru/finished_detail.php?serialnum=565 maybe
> you can contact the operator to find out the likely operating schedule.
>
> Tracking the doppler will be fun and also keeping the dish within the
> required 1- 2 degree pointing accuracy is also likely to be a
> challenge. However it appears that there may be a number of other
> 10GHz downlinks being planned for low earth orbit so all experience
> will be extremely valuable.
>
> 73
>
> Graham G3VZV
>
> On 15/06/2020 17:15, Ken Swaggart W7KKE via AMSAT-BB wrote:
>> In a tweet from AMSAT-UK I saw that an Estonian university will
>> launch their
>> TTU100 cubesat on Friday with a X-band downlink on 10465 MHz. Thought
>> it would be an interesting challenge to aim my X-band dish with a sat
>> TV LNB at closest point of approach and see if I can see anything on
>> the SDR waterfall. My LNB output would be at 715 MHz and the Doppler
>> at AOS would be approximately +533 KHz!
>>
>>
>> A couple of questions before I start configuring the equipment:
>>
>>
>> * Will the 10465 MHz downlink be on during North America passes or
>> only when in range of the Estonian ground station?
>> * What is the modulation? It's an imaging satellite so I expect it
>> will be high data rate.
>>
>>
>> 73,
>>
>> Ken, W7KKE
>>
>> _______________________________________________
>> 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
> _______________________________________________
> 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
_______________________________________________
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: Mon, 15 Jun 2020 17:02:53 -0700
From: Mike Hoblinski <hobergenix@?????.???>
To: amsat-bb@?????.???
Subject: [amsat-bb] Funcube Dongle site
Message-ID:
<CAMpzqDEWpH5VhOYRYyZQDLyXnugfnpRe4d5pkW8sazq6+Oqt3Q@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
I went to the site for information and it appears to be gone and up for
sale.
http://www.funcubedongle.com/
Did the supplier go out of business or discontinue sale of the product.
Mike
N6IMF
------------------------------
Message: 12
Date: Tue, 16 Jun 2020 14:33:49 +1200
From: Wendy and Terry Osborne <wandtosborne@?????.???>
To: "amsat-bb@?????.???? <amsat-bb@?????.???>, Roger Bould
<rogannbould@?????.???>, "Selwyn ZL2BJO@?????.???? <ZL2BJO@?????.???>
Subject: [amsat-bb] Next Rocket Lab launch
Message-ID: <2d4377f7-ef86-d71b-5bf8-175b8e161307@?????.???>
Content-Type: text/plain; charset=utf-8; format=flowed
Hi Folks,
Next Rocket Lab launch is scheduled for 3rd July.
See:
https://www.rocketlabusa.com/missions/completed-missions/pics-or-it-didnt-happ
en/
No, I don't know why it's in "completed-missions"..........
Time yet to be announced.
73,
Terry Osborne ZL2BAC
------------------------------
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 196
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