SB SPACE @ ARL $ARLS002
ARLS002 ARISS Plans Do-Over of Slow-Scan TV Transmissions over
February 15 - 17 Weekend

ZCZC AS02  
QST de W1AW  
Space Bulletin 002  ARLS002
>From ARRL Headquarters  
Newington, CT  February 14, 2019
To all radio amateurs

SB SPACE ARL ARLS002
ARLS002 ARISS Plans Do-Over of Slow-Scan TV Transmissions over
February 15 - 17 Weekend

Amateur Radio on the International Space Station (ARISS) is planning
another popular slow-scan television (SSTV) event in the wake of an
SSTV experiment last weekend, during which signals were reported to
have been weak. Even so, more than 5,500 images were submitted.
Transmissions are scheduled to begin on Friday, February 15, at 0845
UTC and run through Sunday, February 17, at 1725 UTC.

"The ARISS team wanted to give the community another opportunity to
download the SSTV images we developed for you, given the weak-signal
situation that occurred last weekend," said ARISS-International
President Frank Bauer, KA3HDO. He clarified that the same 12 images
transmitted last weekend will be used for this weekend's experiment.

Bauer said it's not entirely clear what caused the low-signal issue
last weekend. "We believe it may have been either a loose feed-line
cable or an antenna switch that did not fully engage," he said.
"Once the crew reset the system and checked the cabling and
switches, the radio system started to perform nominally."

ARISS-Russia team member Sergey Samburov, RV3DR, worked with flight
controllers to schedule ISS crew time to configure the JVC Kenwood
radio to support SSTV operations, which take place from the Service
Module. SSTV images will be transmitted on 145.80 MHz using
SSTV-mode PD120. These can be received using equipment as simple as
a 2-meter handheld radio, a scanner that covers that band, or even
an online WebSDR receiver. Copying the images is as simple as
connecting the receiver's audio output to the audio input of a
computer running free software such as MMSSTV.

Transmissions will consist of eight images from the NASA On The Air
(NOTA) celebration and four ARISS commemorative images. Received
images can be posted and viewed online. ARISS offers an ARISS SSTV
Award for those who receive and decode at least one SSTV image in
the session.

As always, this SSTV event is dependent on other activities,
schedules, and crew responsibilities on the ISS and are subject to
change at any time. Check for updates on the ARISS or AMSAT
websites, the AMSAT-BB reflector, the ARISS SSTV blog at,
http://ariss-sstv.blogspot.com/ , and the ARISS Facebook page, as
well as Twitter at, @ARISS_status .
NNNN
/EX



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