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CX2SA > SATDIG 29.04.16 18:20l 833 Lines 31512 Bytes #999 (0) @ WW
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To : SATDIG@WW
Today's Topics:
1. Fly Your Satellite (Roland Zurmely)
2. Meteor M2 satellite (Roland Zurmely)
3. OUFTI-1 and AAUSAT-4 actvity. (GW1FKY@xxx.xxxx
4. Re: Meteor M2 satellite (Jim Barbre)
5. Re: Meteor M2 satellite (Eric)
6. Re: Meteor M2 satellite (Jean-Pierre Godet)
7. Oufti-1 data received (Roland Zurmely)
8. New Russian Radio Sputnik 48 launched (Nico Janssen)
9. Russian AIST 2D also in the 435 MHz band (Nico Janssen)
10. Re: Russian AIST 2D also in the 435 MHz band (Paul Stoetzer)
11. Re: Russian AIST 2D also in the 435 MHz band (Blinov Igor)
12. Re: Russian AIST 2D also in the 435 MHz band (M5AKA)
13. Re: Russian AIST 2D also in the 435 MHz band (M5AKA)
14. Re: Russian AIST 2D also in the 435 MHz band (M5AKA)
----------------------------------------------------------------------
Message: 1
Date: Thu, 28 Apr 2016 10:55:58 +0000 (UTC)
From: Roland Zurmely <py4zbz@xxxxx.xxx>
To: AMSAT <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Fly Your Satellite
Message-ID:
<482204902.3108835.1461840958711.JavaMail.yahoo@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
Received, decoded and uploaded 5 CW TLM frames for satellite Oufti-1:
<http://www.qsl.net/py4zbz/FYS.htm#b>
73 de Roland PY4ZBZ
------------------------------
Message: 2
Date: Thu, 28 Apr 2016 12:30:21 +0000 (UTC)
From: Roland Zurmely <py4zbz@xxxxx.xxx>
To: AMSAT <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Meteor M2 satellite
Message-ID:
<152529108.3077529.1461846621836.JavaMail.yahoo@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
Image received with DCA antenna, RTL-SDR, LRPTdecoder and
LRPTimageProcessor:2940x4760 pixels, resolution 1km/pix.
<http://www.qsl.net/py4zbz/2016-4-28-9-2-49-265_125.RGB122.jpg>
73 de Roland PY4ZBZ
------------------------------
Message: 3
Date: Thu, 28 Apr 2016 13:00:39 -0400
From: GW1FKY@xxx.xxx
To: amsat-bb@xxxxx.xxx
Cc: g3wfm@xxxxx.xx.xxx nigel@xxxxxxxx.xxxxxxx.xx.xxx
ted.pepper2@xxxxx.xxx
Subject: [amsat-bb] OUFTI-1 and AAUSAT-4 actvity.
Message-ID: <758c2.25c69739.44539bb7@xxx.xxx>
Content-Type: text/plain; charset="US-ASCII"
I have just monitored the passes of OUFTI-1 and AAUSAT-4 during a South to
North pass here in Wales-UK.
Thursday 28th April - starting at approx. 1630 hrs GMT.
Using my TS-2000 ( with pre-amp On ) and my "Elk" antenna I heard first of
all OUFTI-1 transmissions which were quite strong with a high elevation.
Switched band to UHF and also heard data bursts from AAUSAT-4
and that was also quite strong and easy to capture.
Regret unable to confirm if the _e-st@xxxxx (mailto:e-st@xxxxx was
operating as I did not have time.
Congratulations to the teams involved and Good Luck with the further work
and experiments.
Ken Eaton
GW1FKY
Amsat-UK
Amsat NA
------------------------------
Message: 4
Date: Thu, 28 Apr 2016 10:04:35 -0700
From: Jim Barbre <jbarbre@xxxxxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: Re: [amsat-bb] Meteor M2 satellite
Message-ID: <572242A3.6020707@xxxxxxxx.xxx>
Content-Type: text/plain; charset=windows-1252; format=flowed
I have not seen a signal from Meteor M2 on 137.1 MHz in several months.
Is it turned off when over the United States? Is it using a different
downlink frequency?
Thanks.
73
Jim Barbre
KB7YSY
On 4/28/2016 5:30 AM, Roland Zurmely via AMSAT-BB wrote:
> Image received with DCA antenna, RTL-SDR, LRPTdecoder and
LRPTimageProcessor:2940x4760 pixels, resolution 1km/pix.
> <http://www.qsl.net/py4zbz/2016-4-28-9-2-49-265_125.RGB122.jpg>
> 73 de Roland PY4ZBZ
> _______________________________________________
> 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: Thu, 28 Apr 2016 17:38:00 GMT
From: Eric Knaps, ON4HF <on4hf@xxxxxxx.xx>
To: jbarbre@xxxxxxxx.xxxxxxxxxxxxx@xxxxx.xxx
Subject: Re: [amsat-bb] Meteor M2 satellite
Message-ID: <000f4242.47bbe65302be47bd@xxxxxxx.xx>
Content-Type: text/plain; charset="utf-8"
Hello Jim.MN2 is on 137.9 now...
Eric - ON4HF.
Sent with my smartphone...
------ Origineel bericht------Van: Jim BarbreDatum: do, 28 apr. 2016
19:04Naar: amsat-bb@xxxxx.xxxxxxxxxxxxxxxxx [amsat-bb] Meteor M2 satellite
I have not seen a signal from Meteor M2 on 137.1 MHz in several months. Is
it turned off when over the United States? Is it using a different downlink
frequency?Thanks.73Jim BarbreKB7YSYOn 4/28/2016 5:30 AM, Roland Zurmely via
AMSAT-BB wrote:> Image received with DCA antenna, RTL-SDR, LRPTdecoder and
LRPTimageProcessor:2940x4760 pixels, resolution 1km/pix.> > 73 de Roland
PY4ZBZ> _______________________________________________> 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
availableto all interested persons worldwide without requiring m
embership. Opinions expressedare 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: Thu, 28 Apr 2016 21:04:44 +0000
From: Jean-Pierre Godet <godetj@xxxxxxx.xx>
To: amsat-bb@xxxxx.xxx
Subject: Re: [amsat-bb] Meteor M2 satellite
Message-ID: <57227AEC.1070202@xxxxxxx.xx>
Content-Type: text/plain; charset=windows-1252; format=flowed
Yes, Eric,
On the last pass, less than one hour ago, it was on this frequency.
Best 73 to all !
J-P F5YG
On 28/04/2016 17:38, Eric Knaps, ON4HF wrote:
> Hello Jim.MN2 is on 137.9 now...
> Eric - ON4HF.
> Sent with my smartphone...
>
>
>
>
> ------ Origineel bericht------Van: Jim BarbreDatum: do, 28 apr. 2016
19:04Naar: amsat-bb@xxxxx.xxxxxxxxxxxxxxxxx [amsat-bb] Meteor M2 satellite
> I have not seen a signal from Meteor M2 on 137.1 MHz in several months. Is
it turned off when over the United States? Is it using a different downlink
frequency?Thanks.73Jim BarbreKB7YSYOn 4/28/2016 5:30 AM, Roland Zurmely via
AMSAT-BB wrote:> Image received with DCA antenna, RTL-SDR, LRPTdecoder and
LRPTimageProcessor:2940x4760 pixels, resolution 1km/pix.> > 73 de Roland
PY4ZBZ> _______________________________________________> 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
availableto all interested persons worldwide without requiring
m
> embership. Opinions expressedare 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: Thu, 28 Apr 2016 21:53:32 +0000 (UTC)
From: Roland Zurmely <py4zbz@xxxxx.xxx>
To: AMSAT <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Oufti-1 data received
Message-ID:
<1370203735.3373271.1461880412030.JavaMail.yahoo@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
Oufti-1 BCN?CW TLM:
<http://www.qsl.net/py4zbz/FYS.htm#c>
73 de Roland PY4ZBZ
------------------------------
Message: 8
Date: Fri, 29 Apr 2016 14:36:29 +0200
From: Nico Janssen <hamsat@xxxxxx.xx>
To: AMSAT <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] New Russian Radio Sputnik 48 launched
Message-ID: <5723554D.9040704@xxxxxx.xx>
Content-Type: text/plain; charset=utf-8; format=flowed
All,
On April 28, 2016 at 02:01 UTC, the Russian 3U cubesat SamSat 218D
(aka 'Kontakt-Nanosputnik') was launched from the new Russian satellite
launch base 'Vostochny' ('Eastern') in eastern Siberia. SamSat 218D (object
41466, 2016-026C), built at the Samara State University, transmits telemetry
on 435.315 MHz, identifying as 'RS 48'.
For further information on RS 48 see:
http://spaceflight101.com/soyuz-lomonosov/samsat-218d/
73,
Nico, PA0DLO
------------------------------
Message: 9
Date: Fri, 29 Apr 2016 15:05:12 +0200
From: Nico Janssen <hamsat@xxxxxx.xx>
To: AMSAT <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Russian AIST 2D also in the 435 MHz band
Message-ID: <57235C08.90701@xxxxxx.xx>
Content-Type: text/plain; charset=utf-8; format=flowed
All,
Together with RS 48 (SamSat 218D), also the Russian scientific satellite
AIST 2D (41465, 2016-026B) was launched. One of the experiments on
board is the P-band radar BiRLK, that can transmit 200 W pulses in the
435 MHz band with a bandwidth of 1 - 30 MHz.
For further information on AIST 2D see:
http://spaceflight101.com/soyuz-lomonosov/aist-2d/
73,
Nico PA0DLO
------------------------------
Message: 10
Date: Fri, 29 Apr 2016 09:08:26 -0400
From: Paul Stoetzer <n8hm@xxxx.xxx>
To: Nico Janssen <hamsat@xxxxxx.xx>
Cc: AMSAT <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] Russian AIST 2D also in the 435 MHz band
Message-ID:
<CABzOSOpZL_brzG=sPKROe3YE9kua_07BstU+TWsUn2ZBFKohEA@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
"200 W pulses in the 435 MHz band with a bandwidth of 1 - 30 MHz."
Awesome....
On Fri, Apr 29, 2016 at 9:05 AM, Nico Janssen <hamsat@xxxxxx.xx> wrote:
> All,
>
> Together with RS 48 (SamSat 218D), also the Russian scientific satellite
> AIST 2D (41465, 2016-026B) was launched. One of the experiments on
> board is the P-band radar BiRLK, that can transmit 200 W pulses in the
> 435 MHz band with a bandwidth of 1 - 30 MHz.
>
> For further information on AIST 2D see:
> http://spaceflight101.com/soyuz-lomonosov/aist-2d/
>
> 73,
> Nico PA0DLO
>
>
> _______________________________________________
> 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: Fri, 29 Apr 2016 16:28:49 +0300
From: Blinov Igor <rw3xl@xx.xx>
To: Nico Janssen <hamsat@xxxxxx.xx>, AMSAT <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] Russian AIST 2D also in the 435 MHz band
Message-ID: <8903031461936529@xxxxx.xxxxxx.xx>
Content-Type: text/plain; charset=koi8-r
Journalists fairytale, I think.
29.04.2016, 16:06, "Nico Janssen" <hamsat@xxxxxx.xx>:
> All,
>
> Together with RS 48 (SamSat 218D), also the Russian scientific satellite
> AIST 2D (41465, 2016-026B) was launched. One of the experiments on
> board is the P-band radar BiRLK, that can transmit 200 W pulses in the
> 435 MHz band with a bandwidth of 1 - 30 MHz.
>
> For further information on AIST 2D see:
> http://spaceflight101.com/soyuz-lomonosov/aist-2d/
>
> 73,
> Nico PA0DLO
>
> _______________________________________________
> 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
--?
? ?????????, ?????, RW3XL
------------------------------
Message: 12
Date: Fri, 29 Apr 2016 14:15:49 +0000 (UTC)
From: M5AKA <m5aka@xxxxx.xx.xx>
To: Blinov Igor <rw3xl@xx.xx>, Nico Janssen <hamsat@xxxxxx.xx>, AMSAT
<amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] Russian AIST 2D also in the 435 MHz band
Message-ID:
<1795390315.7352450.1461939349850.JavaMail.yahoo@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
The ITU assigned 432-438 MHz to satellites using Synthetic Aperture Radar
some 13+ years.
While the article says the equipment is capable of transmitting a bandwidth
of up to 30 MHz it doesn't necessarily mean it will use that bandwidth.
I'd have thought a 6 MHz bandwidth transmission from 432-438 was more likely.
73 Trevor M5AKA
On Friday, 29 April 2016, 14:30, Blinov Igor <rw3xl@xx.xx> wrote:
Journalists fairytale, I think.
29.04.2016, 16:06, "Nico Janssen" <hamsat@xxxxxx.xx>:
> All,
>
> Together with RS 48 (SamSat 218D), also the Russian scientific satellite
> AIST 2D (41465, 2016-026B) was launched. One of the experiments on
> board is the P-band radar BiRLK, that can transmit 200 W pulses in the
> 435 MHz band with a bandwidth of 1 - 30 MHz.
>
> For further information on AIST 2D see:
> http://spaceflight101.com/soyuz-lomonosov/aist-2d/
>
> 73,
> Nico PA0DLO
>
> _______________________________________________
> 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
--?
? ?????????, ?????, RW3XL
_______________________________________________
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: 13
Date: Fri, 29 Apr 2016 14:33:20 +0000 (UTC)
From: M5AKA <m5aka@xxxxx.xx.xx>
To: AMSAT <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] Russian AIST 2D also in the 435 MHz band
Message-ID:
<1844476083.7369778.1461940400676.JavaMail.yahoo@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
There are a number of references to the 432-438 MHz SAR satellite allocation
in QST. Below are a? couple of clips from ARRL news reports in 2002/3.
I understand there are several more high-power SAR satellites planning to
use 432-438 MHz due for launch in the next few years.
73 Trevor M5AKA
----
ITU 432-438 MHz Synthetic Aperture Radar Satellite P-Band allocation
ARRL Bulletin 45? ARLB045 Newington CT? July 11, 2003
The delegates also agreed to allowed a secondary allocation for satellite
borne synthetic aperture radars at 70 cm
----
ARRL Letter 2002-10-11
ARRL, IARU CONTINUE PUSH FOR LIMITS TO 70-CM SPACEBORNE RADARS
A just-completed draft revision to an International Telecommunication
Union (ITU) Recommendation could result in reining in the potential for
interference to amateur and other services from synthetic aperture radars
(SARs) on 70 cm. Agenda item 1.38 at World Radiocomunication Conference
2003 (WRC-03) will consider a request to allocate up to 6 MHz of spectrum
for SARs in the band 420 to 470 MHz to be operated by the Earth
Exploration Satellite Service (Active)--EESS-Active. At issue is whether
the EESS allocation could be established without interfering with
incumbent services, including radiolocation and amateur.
"ARRL and IARU (International Amateur Radio Union) will continue to oppose
SARs operating in the most active portions of the amateur 70-cm band,"
said ARRL Technical Specialist Walt Ireland, WB7CSL. The spaceborne SARs
would be used to measure soil moisture, tropical biomass and Antarctic ice
thickness, and to document geological history and climate change. EESS
proponents contend that the best center frequency to penetrate jungle or
forest canopies is 435 MHz.
"There is some hype starting up at this late date that gives the
impression that the sky is falling," Ireland said, referring to recent
reports in the Amateur Radio news media that, among other things,
incorrectly claim that EESS proponents are seeking "exclusive use" of 430
to 440 MHz and that the EESS issue is a new one.
While some occasional interference from SARs to amateur systems would
appear inevitable, Ireland said, efforts to minimize the impact of the
EESS (Active) operations have been under way for several years. "Although
the SAR interference criteria limitations in the revised Recommendation
SA.1260 automatically would eliminate three of the SARs, amateurs can
still expect to receive interference from some of the remaining SARs on a
limited basis if WRC-03 allocates frequency spectrum between 420 and 440
MHz to EESS (Active)," he continued, "especially if the allocation is made
primary." The revised draft would keep four of the proposed SARs and
eliminate those with peak radiated power levels from 400 W to 10 kW--that
is, average power levels above 25 W, he explained.
Work on the major rewrite to ITU Recommendation SA.1260, hammered out by
ITU-Radio Sector Working Party 7C over the last several years, wrapped up
October 4 following a weeklong meeting. The draft recommendation sets
interference criteria limitations for SARs to be operated by EESS (Active)
in the 70-cm Radiolocation and Amateur and Amateur-Satellite Services
band. Ireland represented the ARRL on the US Delegation to ITU-Radio
Sector WP 7C. Ken Pulfer, VE3PU, represented the IARU. For the past two
years, Pulfer has been chairing the drafting groups that worked on the
revision and brought it to its present status--along the way incorporating
protection for amateurs.
SARs and the Amateur Service can coexist at 430 to 440 MHz "by taking
appropriate technical and operational measures," the draft revision
states. The Amateur Service is primary at 430 to 440 MHz in Region 1 and
secondary in Regions 2 and 3, which includes the US.
"It should be remembered, however, that an ITU-R recommendation is just
that--a recommendation, not a regulatory instrument," Ireland cautioned.
He notes that 18 sharing or compatibility studies--in which the ARRL and
the IARU have actively participated--have been conducted during the past
seven years--eight of them completed in the past two years.
During the Conference Preparatory Meeting next month as well as at WRC-03
next June in Geneva, the ARRL has pledged to maintain its stance against
egregious interference from SARs to Amateur Radio. The US also has
expressed opposition to SARs that could interfere with its radiolocation
systems in the band.
Earlier this year, the FCC's WRC-03 Advisory Committee and the National
Telecommunications and Information Administration's Radiocommunications
Conference Subcommittee recommended no change to the Table of Allocations
in the band 420 to 470 MHz as the US position. Both panels determined that
SAR transmissions could periodically impact amateur reception and even
held "the potential for significant interference."
----
On Friday, 29 April 2016, 15:15, M5AKA via AMSAT-BB <amsat-bb@xxxxx.xxx>
wrote:
The ITU assigned 432-438 MHz to satellites using Synthetic Aperture Radar
some 13+ years.
While the article says the equipment is capable of transmitting a bandwidth
of up to 30 MHz it doesn't necessarily mean it will use that bandwidth.
I'd have thought a 6 MHz bandwidth transmission from 432-438 was more likely.
73 Trevor M5AKA
? ? On Friday, 29 April 2016, 14:30, Blinov Igor <rw3xl@xx.xx> wrote:
Journalists fairytale, I think.
29.04.2016, 16:06, "Nico Janssen" <hamsat@xxxxxx.xx>:
> All,
>
> Together with RS 48 (SamSat 218D), also the Russian scientific satellite
> AIST 2D (41465, 2016-026B) was launched. One of the experiments on
> board is the P-band radar BiRLK, that can transmit 200 W pulses in the
> 435 MHz band with a bandwidth of 1 - 30 MHz.
>
> For further information on AIST 2D see:
> http://spaceflight101.com/soyuz-lomonosov/aist-2d/
>
> 73,
> Nico PA0DLO
>
> _______________________________________________
> 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
--?
? ?????????, ?????, RW3XL
_______________________________________________
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: 14
Date: Fri, 29 Apr 2016 16:03:14 +0000 (UTC)
From: M5AKA <m5aka@xxxxx.xx.xx>
To: AMSAT <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] Russian AIST 2D also in the 435 MHz band
Message-ID:
<882541600.7560482.1461945794110.JavaMail.yahoo@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
The following ITU-R Recommendation is applicable to the operation of
satellite SAR.
Recommendation ITU-R SA.1260-1 Feasibility of sharing between active
spaceborne sensors and other services in the range 420-470 MHz
Annex 1 covers Technical and operational constraints
https://www.itu.int/dms_pubrec/itu-r/rec/sa/R-REC-SA.1260-1-200305-S!!PDF-E.pd
f
Page 44 of the September 2003 issue off QST has an article by VE3PU on SAQR
in 432-438 MHz.
http://p1k.arrl.org/pubs_archive/104721
73 Trevor M5AKA
On Friday, 29 April 2016, 15:37, M5AKA via AMSAT-BB <amsat-bb@xxxxx.xxx>
wrote:
There are a number of references to the 432-438 MHz SAR satellite
allocation in QST. Below are a? couple of clips from ARRL news reports in
2002/3.
I understand there are several more high-power SAR satellites planning to
use 432-438 MHz due for launch in the next few years.
73 Trevor M5AKA
----
ITU 432-438 MHz Synthetic Aperture Radar Satellite P-Band allocation
ARRL Bulletin 45? ARLB045 Newington CT? July 11, 2003
The delegates also agreed to allowed a secondary allocation for satellite
borne synthetic aperture radars at 70 cm
----
ARRL Letter 2002-10-11
ARRL, IARU CONTINUE PUSH FOR LIMITS TO 70-CM SPACEBORNE RADARS
A just-completed draft revision to an International Telecommunication
Union (ITU) Recommendation could result in reining in the potential for
interference to amateur and other services from synthetic aperture radars
(SARs) on 70 cm. Agenda item 1.38 at World Radiocomunication Conference
2003 (WRC-03) will consider a request to allocate up to 6 MHz of spectrum
for SARs in the band 420 to 470 MHz to be operated by the Earth
Exploration Satellite Service (Active)--EESS-Active. At issue is whether
the EESS allocation could be established without interfering with
incumbent services, including radiolocation and amateur.
"ARRL and IARU (International Amateur Radio Union) will continue to oppose
SARs operating in the most active portions of the amateur 70-cm band,"
said ARRL Technical Specialist Walt Ireland, WB7CSL. The spaceborne SARs
would be used to measure soil moisture, tropical biomass and Antarctic ice
thickness, and to document geological history and climate change. EESS
proponents contend that the best center frequency to penetrate jungle or
forest canopies is 435 MHz.
"There is some hype starting up at this late date that gives the
impression that the sky is falling," Ireland said, referring to recent
reports in the Amateur Radio news media that, among other things,
incorrectly claim that EESS proponents are seeking "exclusive use" of 430
to 440 MHz and that the EESS issue is a new one.
While some occasional interference from SARs to amateur systems would
appear inevitable, Ireland said, efforts to minimize the impact of the
EESS (Active) operations have been under way for several years. "Although
the SAR interference criteria limitations in the revised Recommendation
SA.1260 automatically would eliminate three of the SARs, amateurs can
still expect to receive interference from some of the remaining SARs on a
limited basis if WRC-03 allocates frequency spectrum between 420 and 440
MHz to EESS (Active)," he continued, "especially if the allocation is made
primary." The revised draft would keep four of the proposed SARs and
eliminate those with peak radiated power levels from 400 W to 10 kW--that
is, average power levels above 25 W, he explained.
Work on the major rewrite to ITU Recommendation SA.1260, hammered out by
ITU-Radio Sector Working Party 7C over the last several years, wrapped up
October 4 following a weeklong meeting. The draft recommendation sets
interference criteria limitations for SARs to be operated by EESS (Active)
in the 70-cm Radiolocation and Amateur and Amateur-Satellite Services
band. Ireland represented the ARRL on the US Delegation to ITU-Radio
Sector WP 7C. Ken Pulfer, VE3PU, represented the IARU. For the past two
years, Pulfer has been chairing the drafting groups that worked on the
revision and brought it to its present status--along the way incorporating
protection for amateurs.
SARs and the Amateur Service can coexist at 430 to 440 MHz "by taking
appropriate technical and operational measures," the draft revision
states. The Amateur Service is primary at 430 to 440 MHz in Region 1 and
secondary in Regions 2 and 3, which includes the US.
"It should be remembered, however, that an ITU-R recommendation is just
that--a recommendation, not a regulatory instrument," Ireland cautioned.
He notes that 18 sharing or compatibility studies--in which the ARRL and
the IARU have actively participated--have been conducted during the past
seven years--eight of them completed in the past two years.
During the Conference Preparatory Meeting next month as well as at WRC-03
next June in Geneva, the ARRL has pledged to maintain its stance against
egregious interference from SARs to Amateur Radio. The US also has
expressed opposition to SARs that could interfere with its radiolocation
systems in the band.
Earlier this year, the FCC's WRC-03 Advisory Committee and the National
Telecommunications and Information Administration's Radiocommunications
Conference Subcommittee recommended no change to the Table of Allocations
in the band 420 to 470 MHz as the US position. Both panels determined that
SAR transmissions could periodically impact amateur reception and even
held "the potential for significant interference."
----
? ? On Friday, 29 April 2016, 15:15, M5AKA via AMSAT-BB <amsat-bb@xxxxx.xxx>
wrote:
The ITU assigned 432-438 MHz to satellites using Synthetic Aperture Radar
some 13+ years.
While the article says the equipment is capable of transmitting a bandwidth
of up to 30 MHz it doesn't necessarily mean it will use that bandwidth.
I'd have thought a 6 MHz bandwidth transmission from 432-438 was more likely.
73 Trevor M5AKA
? ? On Friday, 29 April 2016, 14:30, Blinov Igor <rw3xl@xx.xx> wrote:
Journalists fairytale, I think.
29.04.2016, 16:06, "Nico Janssen" <hamsat@xxxxxx.xx>:
> All,
>
> Together with RS 48 (SamSat 218D), also the Russian scientific satellite
> AIST 2D (41465, 2016-026B) was launched. One of the experiments on
> board is the P-band radar BiRLK, that can transmit 200 W pulses in the
> 435 MHz band with a bandwidth of 1 - 30 MHz.
>
> For further information on AIST 2D see:
> http://spaceflight101.com/soyuz-lomonosov/aist-2d/
>
> 73,
> Nico PA0DLO
>
> _______________________________________________
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--?
? ?????????, ?????, RW3XL
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End of AMSAT-BB Digest, Vol 11, Issue 135
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