faulty tmd700 on the iss - voice crossband repeater mode

g3zhi – April 23, 2007 – 08:28

i understand that although the tmd700 is working is has a fault condition

a possible solution would be to reprogam the radio using a laptop
and people are trying to get the project approved
but it is difficult

like many others i would like to see it back on crossband repeater mode

the tmd700 is not manually easy to program even when you have the manual in front of
you and you are on the ground

we live in hope

73 ian

www.qsl.net/g3zhi

D700 not faulty

N5VHO – April 23, 2007 – 23:35

The D700 radio is not broken. The programming has changed and is not configured to support simplified operations.

Imagine you loan your radio to a friend for a week and he reprograms it to suit his needs and then gives it to another friend who takes it on a DXpedition. That last person emails you and asks how to reprogram the radio back to the way you had it while he is on an isolated island. Think you could walk him through restoring 200 + parameters and preprogrammed memory channels? Keep in mind, you have no idea what the other guy did to the radio.

It would be best to get the software that would permit the radio to be restored to known defaults. Getting the software and access to a laptop to be able to accomplish the restoration is proving extremely difficult.

Kenneth - N5VHO
http://spaceflight.nasa.gov/station/reference/radio/
http://www.clarc.org/jprod/component/option,com_weblinks/catid,14/Itemid,23/

Reprogramming TMD-700?

manxmat – April 23, 2007 – 13:20

As far as I'm aware, the firmware in the radio is customised for use onboard, so I would imagine it wouldn't be possible to re-program the radio using 'off the shelf' software - it would have to be specially written to cope with the radio's modified firmware.

- I'm also hoping to see the radio back in full action again - I quite enjoyed the packet setup for digipeating - never managed to make any cross band QSO's - hopefully won't be too long till it is all up and running again.

Re: Reprogramming TMD-700?

TB2NCC – April 23, 2007 – 21:03
manxmat wrote:

As far as I'm aware, the firmware in the radio is customised for use onboard, so I would imagine it wouldn't be possible to re-program the radio using 'off the shelf' software - it would have to be specially written to cope with the radio's modified firmware.

- I'm also hoping to see the radio back in full action again - I quite enjoyed the packet setup for digipeating - never managed to make any cross band QSO's - hopefully won't be too long till it is all up and running again.

If they are having this much

W8OSP – April 23, 2007 – 14:51

If they are having this much trouble with it, Why cant they just replace it? Get a new one, program it down here. Then on next mission take it up!! Leave the one they have up ther for just voice contacts. Then the new one could be used for SSTV and packet! Ohwell i know thats to easy and not enough money to spend.

>If they are having this much

pd0rkc – April 23, 2007 – 15:57

Hello,

A new TM-D700 to ISS is not the best option to chooce.
If that one get miss configured in the future you would have
2 TM-D700 with problems.
A laptop is the best option so the crew can reprogram the
radio (quick) any time when it's nessesary.

73's Cor PD0RKC

Cor, I am afraid I agree

MM0EFJ – April 23, 2007 – 22:02

Cor, I am afraid I agree with W8OSP as I was thinking the same thing myself.
If the TMD700 is faulty it is not expensive to replace and generally these radios are not troublesome in my experience, the chancesof another faulty one are pretty slim. Just send a replacement up and throw the old one in the trash module for disposal, thus avoiding complicated reprogramming on board ISS which probably the crew have little enough time to spare do quicly anyway.
Would certainly like to see things up and running again as I am sure you would yourself.
Keep up the good work on your website by the way, it is much appreciated.
regards,
Mike MM0EFJ

Thinking too easy?

pd0rkc – April 24, 2007 – 13:38

Hello Mike,

MM0EFJ>If the TM-D700 is faulty it is not expensive to replace
Earlier I have wroted the radio is miss configured, it only needs to
be reprogrammed.
keep in mind every radio which go up have to be meassured to get a safty
certification, it cost a lot and also cargo costs.

73's Cor PD0RKC

update by Frank H. Bauer ARISS International Chairman

g3zhi – April 25, 2007 – 08:26

ISS Amateur Radio Operations
I wanted to provide a progress report on the ISS Ham Radio activities, and to address some questions that have come up related to ARISS operations and equipment upgrade and repair.

With the successful Shuttle return to flight, the International Space Station Program construction has moved into high gear with delivery and assembly of new ISS modules. If all goes well, the new European Columbus Module and Japanese Kibo module will be installed on ISS in the next 12 months. This substantial workload on the crew is impacting ARISS operations directly.

European Columbus Module. Credits: ESA / D.Ducros
The launching of any new or replacement radios or computers has been significantly curtailed due to the extremely limited upmass capability. There are just too many higher priority activities from an international space agency perspective and frankly we are a lower priority.

The extra workload on the crew has taken its toll on ARISS - they have had very little extra time for Amateur Radio activities beyond school contacts. This is somewhat frustrating to the general ham radio community and the ARISS International Team, though the team is pleased that the crew has been able to speak so often with youth groups worldwide, piquing their interest in Amateur Radio, science, technology, engineering and math.

The ARISS team had been hopeful that Charles Simonyi would have been able to restore the Kenwood D700 radio system to full functionality after an accidental reprogramming of the radio occurred near the end of Exp 13. The ARISS team worked diligently with the Simonyi team to get Charles licensed, trained, and prepared to perform the Kenwood reprogramming. Unfortunately, the ARISS team hit a major hurdle a few weeks before Charles' launch.
We learned that additional software certification steps were required to allow the reprogramming software to be used on the ISS computers. Through heroic efforts by the team, final
software certification was successfully completed.

Unfortunately, this was completed only a few days before Charles' return from space. As a result, the ARISS team was informed by the mission control team and some of our
international team partners that it there was insufficient time to allow Charles to complete the restoration. Thus, the Kenwood restoration was not completed by Charles. This last minute hiccup in software certification was not predictable. So there was no way the ARISS team could have better prepared for Charles' flight.

At this point in time, it appears that a full restoration will require a substantial, concerted effort with full cooperation from our international colleagues and the Russian and US space agencies. We need to make sure that all components necessary for a successful reprogramming are identified, purchased (if necessary), certified, tested and flown together before the radio will be fully restored. Realizing this will be especially challenging due to the upmass issue I described above. This will likely take several months to accomplish as the team will have to begin from square one.

In the short term, requests for some investigative analysis by the crew will be made. This will enable the ARISS team to determine if the radio can be partially restored to provide some of the unattended operations that it once provided.

With Charles' successful landing, we have started down this new path. We will continue to keep you informed of our progress.

In closing, we are aggressively working this issue, despite several setbacks. While our plans to have Charles reprogram the radio were thwarted, we were happy that he could speak to so many hams around the world during his short stay. And capture the imagination of students around the globe.

On behalf of the ARISS team, we thank all of you for your interest and enthusiasm in Ham Radio on the ISS.

73, Frank H. Bauer, KA3HDO
ARISS International Chairman
AMSAT-NA V.P. for Human Spaceflight Programs

Frank H. Bauer, KA3HDO

BitPlayer – April 27, 2007 – 03:36

Thanks for the update. The APRS station on the ISS is a great PR tool for Amateur Radio and the Space Station and a big communication asset to the average operator.

Peter
VE7QRZ

in short...

kb0zuu – April 25, 2007 – 21:03

in short ...... they are working on it and it may be a while .....

Right-oh

N5VHO – April 26, 2007 – 01:45

Excellent deduction my dear Mr. Watson.

Due to the likelihood of this being fixed as an opportunity presents itself, you'll likely know it is working when it starts working.

Kenneth - N5VHO
http://spaceflight.nasa.gov/station/reference/radio/
http://www.clarc.org/jprod/component/option,com_weblinks/catid,14/Itemid,23/