ISS voice transmissions

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Tippytoes
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Post by Tippytoes »

Hi everyone,

Thanks for this posting, I never knew this was possible. Not sure if I could commit to a scanner, but it's really exciting to think us mere mortals can listen into space. Fantastic. Keep posting I'm fasinated.

Cheers
Tippy
Skywatcher Explorer 130PM
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Davej
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Post by Davej »

Tippytoes wrote:Hi everyone,

Thanks for this posting, I never knew this was possible. Not sure if I could commit to a scanner, but it's really exciting to think us mere mortals can listen into space. Fantastic. Keep posting I'm fasinated.

Cheers
Tippy
If you check with Heavens Above you will see that there is a visible pass

of the ISS this evening (Sun 15th) at around 22.04 BST (thats my location

in S.Yorks). Also check out the Iridium Flare times, these look quite

promising too.

Dave
Meade LX 200 (7"). Odyssey 8" Dob.
11X80 10x50 15x70 bins
Celestron Neximage ccd cam
Hawk
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Post by Hawk »

Thanx Dave,
Have been trying to see the ISS for the last couple of days but failed everytime. It wasn't until I saw your post and realised that I'd been looking too late i.e. the time stated or an hour later. Mabe I had a blonde moment :oops: But tonight, I went out an hour earlier than stated and saw it. :shock: It was brilliant! Didn't hear anything on the old scanner though, but I'm not complaining. :D
Hawk (yes, that's my real 1st name)
Skywatcher Explorer 150P
Nikon D2x
Davej
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Post by Davej »

Hi Hawk

One more observing opportunity tonight (Sun 15th) around 22.04 BST

(my location) . Glad you saw it. Iv"e heard two voice transmissions (last

week) The second one didn"t mean much to me though because it was

probably Russian :)

Dave
Meade LX 200 (7"). Odyssey 8" Dob.
11X80 10x50 15x70 bins
Celestron Neximage ccd cam
robinflegg
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Post by robinflegg »

Does anyone know a good book or website discussing all of the above?

In particular, about what to buy and how to undertake such activities.
Robin
Davej
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Post by Davej »

Hi Robin,

Have a look at this site http://www.issfanclub.com/user/3222

You will have to create an account (free). Very interesting.

Dave
Meade LX 200 (7"). Odyssey 8" Dob.
11X80 10x50 15x70 bins
Celestron Neximage ccd cam
dazcaz
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Post by dazcaz »

Taken from the issfanclub site:-

ISS crew often talking with Moscow flight control on 143.625Mhz (FM/N).
Also today (14 April) I heard crew in two passes.
20:29UTC Russian cosmonaut speaking Russian to Moscow flight control.
22:04UTC Space toerist Charles speaking english to Moscow flight control.



This might be a more useful frequency than 145.800 as it's the ISS' own freq and not a ham freq. The ham freq is used mainly for school link ups AFIK.

Most decent scanner have a dual watch facility, my ham rigs do, so I'll be listening on both from now on :)

Darren
I once came last in an astronomy competition.
I was awarded a constellation prize


Skywatcher Explorer 200 HEQ5
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Cliff
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Post by Cliff »

Dear al(L)
With regards to my knowledge of ISS matters, as Manuel might say -
" I KNOW NOTHING !"
However, a BBC TV News programme earlier today mentioned that a radio ham living on the Isle of Man has recently had a conversation with an in flight space tourist.
Best of luck from Cliff
dazcaz
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Post by dazcaz »

Just caught the 20:49 pass of ISS.
Cloud cover prevented me from seeing it, but my radio caught a one sided conversation in russian on 143.625. Two different voices talking to ground. Obviously ground could not be heard :(

I have recorded it on my moby. It's saved as an amr file. How do I convert it to wav, and where can I post it.... It's not much to listen to but it is voices from space!

I might try and catch the 22:24 pass on one of my MP3 players. They record in MP3 :)

Darren
I once came last in an astronomy competition.
I was awarded a constellation prize


Skywatcher Explorer 200 HEQ5
Skywatcher Skymax 127 SupaTrak
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Davej
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Post by Davej »

Hi,

Just got in from work in time to catch the latest pass 22.24 BST.

Got a good eight minutes of voice transmission (only the ISS side of the

conversation). Very cloudy so no chance of observing.

Dave
Meade LX 200 (7"). Odyssey 8" Dob.
11X80 10x50 15x70 bins
Celestron Neximage ccd cam
dazcaz
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Post by dazcaz »

Heard nothing on 143.625 in Cardiff :(
Rig listening, recorder set to auto record anything it heard.... NOTHING!!!!

It was only a short pass for me (3 mins visable), so perhaps a little too far away.

I don't know what daylight passes there will be tomorrow, but if I can find the PSU for the recorder, I might leave it listen all day.

Darren
I once came last in an astronomy competition.
I was awarded a constellation prize


Skywatcher Explorer 200 HEQ5
Skywatcher Skymax 127 SupaTrak
Celestron C4-R CG-4 mount
Davej
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Post by Davej »

Hi Darren,

I got it on 145.800 fm

Was at work for the 20.50 BST pass but managed to have a go with my

handheld scanner but couldn"t get anything.

Was at home in time for the 20.24 BST pass so was able to pick it up on

the base station.

Dave

PS. The Heavens Above prediction gave me a 3 minute visible pass too,

but I heard the transmission for about 8 minutes
Meade LX 200 (7"). Odyssey 8" Dob.
11X80 10x50 15x70 bins
Celestron Neximage ccd cam
dazcaz
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Post by dazcaz »

b****r.... When using auto record, I can't dual watch as the switch between the two freqs starts the recorder... I have a sproggy on 145.8 and it's a little too loud and starts the recorder running. So I chose 143 and not 145 thinking that they only use 145 for ham stuff and school links etc. D'oh!!!!!

I should be in bed, but instead I'm working on an interface to allow me to dual watch without causing the problems. I'm trying to notch out the tone that the sproggy is causing.

Later....

Just finished the notch filter. Tone not removed, but limited enough to be below the auto record threshold. I can alter the threshold, but I don't want to risk missing anything :)

I'll leave it run over night and see what happens. I don't think there are any passes, so it should be a good test.
My old Archos jukebox MP3 machine is a very versatile bit of kit. So much more useful than an i-Pod, but about 6 times fatter :)

A great ISS tracking site can be found at
http://www.n2yo.com/
It will track all many birds, not just ISS. It also gives you daytime passes too to get listening :)

Darren
I once came last in an astronomy competition.
I was awarded a constellation prize


Skywatcher Explorer 200 HEQ5
Skywatcher Skymax 127 SupaTrak
Celestron C4-R CG-4 mount
12dstring
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Post by 12dstring »

I left mine recording, scanning between the 143 and 145 frequencies.
It was only afterwards I realised it wasn't set to FM :oops:

I still somehow managed to pick up a few seconds of some speech, which I initially thought was Russian, but having listened through many times you can make out the words "oh well um, somebody has got some" ...with a definite american accent, so I don't think it was interference from here in the UK.

I'll keep trying
Dave

Telescopes: Skywatcher Explorer-150 + Skywatcher ED80
Cameras: SPC900NC (SC1.5 & SC4.25 - both cooled) + Canon 350D (ACF modded)
http://www.12dstring.me.uk/astro.htm
dazcaz
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Post by dazcaz »

My overnight test of my auto record was a disaster :(
I was hoping to get nothing, but something cropped up on 145.8 and held the receiver's squelch open. I've recorded 5 1/2 hours of noise!!!!!
It's intermittant. Possibly a neigbour's heating thermostat.
I'll have another play when I get home from work tonight.
There is another (not visable) pass at 18:03 (local) and another at 1936 so I'll have a chance to fine tune.
Getting the squelch level right will be the main issue. I wish that the ISS would start using CTCSS or DCS, I could open squelch the rig then and let the clever stuff do it's job :)
The ham rig on board ISS can do both CTCSS and DCS, maybe I'll drop them an e-mail and tell them how to use it :)

Visable passes will be shorter than audible passes, as for it to be visable it has to be A) dark, and B) in sunlight. To be audible it technically just has to be over the horizon.

Darren
I once came last in an astronomy competition.
I was awarded a constellation prize


Skywatcher Explorer 200 HEQ5
Skywatcher Skymax 127 SupaTrak
Celestron C4-R CG-4 mount
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