[amsat-bb] Re: A Proposal for ARISS
g0mrf at aol.com
Fri Jul 1 16:52:43 PDT 2011
Nice wish list Ed. A well thought out inventory of kit.
I recall 2 years ago I had some communication with some current and ex-members of ARISS and came up with something similar. Unfortunately, and hopefully this has now changed, I was left with the impression that ARISS was not AMSAT. That space tested transponders were not wanted and the ideal solution was a new D-800 (or should that be D-700) with a big fan and modified firmware.
I decided that it was not worth continuing the conversation and waited for time to pass.
Sadly Europe is not doing any better. Thousands of dollars worth of antennas on the exterior of the Columbus module and not a single piece of radio hardware in sight. Years of wasted opportunity. I now just apologise to those members of the microwave community here who contributed to the antennas.
Thank heavens for ARISSat-1 though, a glimmer of hope for all of us.
From: Edward R. Cole <kl7uw at acsalaska.net>
To: amsat-bb at amsat.org
Sent: Fri, 1 Jul 2011 21:54
Subject: [amsat-bb] A Proposal for ARISS
After posting some thoughts a few days ago (RE: ISS, what the heck
happened?), I have given the idea more consideration.
Proposal (ARISS on ISS):
1) Install a 100-KHz transponder unit on ISS, with usual digital
2) It would run mode-UV
3) Installed internally in the ISS
4) Replace most of the current ISS ham radio equipment
5) Could be considered an upgrade/improvement to the existing ham radio on ISS
6) Use ISS power and existing ham radio antenna infrastructure (no
solar panels)(no thermal requirements for space environ)(perhaps less
7) Use batteries for stand-alone operation (recharged from ISS power)
8) Control commanded from ground (no intervention required by astronauts)
9) Local access for use of astronaut-hams
10) Provide emergency back-up comms for ISS (perhaps with a separate
11) (perhaps) Use of existing ham-radio handheld on ISS on low-power
to dedicated receiver which would activate astronaut repeater channel.
12) This FM channel could be used as FM ham repeater when not in use
by astronauts (means world-wide monitoring for the astronauts as
well as normal Leo FM activity)
13) Modular design for future upgrades and/or repair (easy
installation by astronauts-plug*n*play)
14) Segmented pass-band to allow packet/APRS digipeating
15) Transmitters able to be shut down for eva and other critical
missions either locally on ISS or from ground.
16) Perhaps a special Rx/Tx on ISS eva channel for cross-band repeat
in event of loss of atmosphere emergency (help to sell the concept to
NASA as a comms back-up).
17) No need for orientation (spin or de-spin), rad hardening,
thermal structures (air-cooled), no propulsion, no launch requirements.
18) Easily maintained by supply from ground (repairs or upgrades).
Re-direct of either Fox or P3E efforts? (no launch requirement-rides
as cargo to ISS)
73, Ed - KL7UW, WD2XSH/45
BP40IQ 500 KHz - 10-GHz www.kl7uw.com
EME: 50-1.1kw?, 144-1.4kw, 432-100w, 1296-60w, 3400-?
DUBUS Magazine USA Rep dubususa at gmail.com
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