ARLA/CLUSTER: ISS Ham TV altera a frequencia este fim de semana para 2395 MHz

[João Costa > CT1FBF]

ISS HamTV to switch to 2395 MHz on March 15/16
[image: Front panel of the HamTV
transmitter]<http://ukamsat.files.wordpress.com/2013/08/ham-tv-transmitter-front-panel.jpg>

Front panel of the HamTV transmitter

The Digital HamTV transmitter on the International Space Station will
change frequency to 2395 MHz on the weekend of March 15/16.
[image: HamTV Antennas at ARISS Telebridge Station IK1SLD in Casale
Monferrato, Italy]<http://ukamsat.files.wordpress.com/2013/09/new-hamtv-antenna-for-ariss-telebridge-station-ik1sld-at-casale-monferrato-italy.jpg>

HamTV Antennas at ARISS Telebridge Station IK1SLD in Casale Monferrato,
Italy

HamTV Bulletin 9:

The Ham Video transmitter commissioning steps 1 and 2 were performed as
planned. Working together  with ESA / B.USOC, the ARISS team in Matera did
an excellent job.

Saturday April 8, four configurations tested with antenna 41.
Sunday April 9, six configurations tested with antenna 43.

Both ARISS L/S-band antennas are operational in S-band. Reports from ground
stations during blank transmissions will allow further analysis of their
performance and radiation characteristics in space.

Recordings of signals received during commissioning steps at Matera ground
station will be made available on the BATC server.

In Livorno, Ham Video manufacturer Kayser Italia received excellent signals
with a 1.2m dish. In Casale Monferrato, the ARISS telebridge station also
received good signals with the same type of antenna.
[image: A basic amateur radio station that should be able to receive HamTV
from ISS - Image
AMSAT-Italia]<http://ukamsat.files.wordpress.com/2013/05/equipment-required-to-receive-iss-ham-tv.jpg>

A basic amateur radio station that should be able to receive HamTV from ISS
– Image AMSAT-Italia

Recordings can be viewed with VLC software. Please select 16/9 image format.

Presently, Ham Video is transmitting permanently a “blank� image and no
audio in configuration 1:
* ARISS antenna 43
* Frequency 2422 MHz
* Symbol rate 1.3 Ms/s
This blank transmission will continue till the end of the week.

Next week blank transmission is planned with antenna 43 on 2395 MHz and 1.3
Ms/s. The frequency changeover will be done Saturday 15 or Sunday 16 March.
All Ham Video frequencies have been notified to ITU as ISS – ARISS.
[image: BATC Webstream of ISS HamTV by Stefan VE4NSA March 8,
2014]<http://ukamsat.files.wordpress.com/2014/03/batc-webstream-of-iss-hamtv-by-stefan-ve4nsa-2014-03-08.jpg>

BATC Webstream of ISS HamTV by Stefan VE4NSA March 8, 2014

Reports on reception of blank transmissions are very welcome. Reports can
be filed via this webpage:
http://www.spaceflightsoftware.com/ARISS_FSTV/submit.php

Participants using the Tutioune receiving software can record as well as
stream detailed parameters of the received signal. Please see:
http://www.vivadatv.org/

Blank transmissions will continue till the next commissioning step, which
is planned April 12, 2014. We will announce configurations in due time.

Thank you for your participation to the Ham Video testing campaign.

73,
Gaston Bertels, ON4WF
ARISS Europe chair

Read the HamTV overview by Gaston Bertels ON4WF
http://tinyurl.com/HamTVoverview

Join the ISS HamTV Yahoo Group http://groups.yahoo.com/group/HamTV

Webstream of the TV transmissions http://batc.tv/ch_live.php?ch=4

ARISS-EU HamTV Bulletins http://www.ariss-eu.org/

HamTV on Facebook https://www.facebook.com/Hamtvproject

Fonte: AMSAT-UK
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