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HF ACARS

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tim

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Jul 29, 2003, 9:01:03 AM7/29/03
to
Just decoded my first HF ACARS and thought i would share with all! (Sorry
for the long post)


Using PC-HFDL on a 1.7ghz HP Laptop.

----------------------------------------------------------------------------
-----

Preamble 300 bps 1.8 sec Interleaver FREQ ERR -16.462897 Hz Errors 0
[SPDU CRC PASS]
Version = 0 * Freq utilisation = LIGHT * ISO 8208 = Not Supported
No change, same frequency, Ground Station UP
Ground Station ID = 5 AUCKLAND - NEW ZEALAND
Frame Index = 1451 * Frame offset = 4 * UTC = 12:54:01 SYNCHED
LPDU ACK codes
ACK S11(N-3) ID 00
ACK S12(N-3) ID 00
ACK S01(N-2) ID 00
ACK S02(N-2) ID 00
ACK S03(N-2) ID 00
ACK S04(N-2) ID 00
ACK S05(N-2) ID 00
ACK S06(N-2) ID 00
ACK S07(N-2) ID 00
ACK S08(N-2) ID 00
ACK S09(N-2) ID 00
ACK S10(N-2) ID 00
ACK S11(N-2) ID 00
ACK S12(N-2) ID 55 ack(1)
ACK S01(N-1) ID 00
ACK S02(N-1) ID 00
ACK S03(N-1) ID 00
ACK S04(N-1) ID 00
ACK S05(N-1) ID 00
ACK S06(N-1) ID 00
ACK S07(N-1) ID 00
ACK S08(N-1) ID 00
ACK S09(N-1) ID 00
ACK S10(N-1) ID 00
Slot assignment codes
ASN S03 (N+0) Random Access
ASN S04 (N+0) Uplink or not assigned
ASN S05 (N+0) Random Access
ASN S06 (N+0) Random Access
ASN S07 (N+0) Random Access
ASN S08 (N+0) Random Access
ASN S09 (N+0) Random Access
ASN S10 (N+0) Random Access
ASN S11 (N+0) Random Access
ASN S12 (N+1) Random Access
ASN S01 (N+1) Random Access
ASN S02 (N+1) Random Access
Lowest Priority accepted 0
Database Version 24
This GS active freqs 5 8
GS2 ID = 8 JOHANNESBURG - SOUTH AFRICA UTC LOCKED Active freqs 3
GS3 ID = 9 BARROW - ALASKA UTC LOCKED Active freqs 8 15
00 85 AB 45 00 00 00 00 00 00 00 00 00 00 00 ...E ...........
00 00 00 00 00 00 00 00 50 15 00 00 00 00 00 ........P ......
00 00 00 00 00 00 00 00 00 00 FE 00 FE FE FE ...............
FE FE FE FE FE FE FE 00 18 00 09 00 88 05 00 ...............
90 08 08 04 CB AB 00 .

----------------------------------------------------------------------------
------

Now to find some more active freq's!!

Tim.


heathernpeter

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Jul 29, 2003, 3:56:09 PM7/29/03
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what software are you using ?

Cheers Peter VK4KHP
"tim" <hotr...@bigpond.com> wrote in message
news:jeuVa.22040$OM3....@news-server.bigpond.net.au...

Richard Newman

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Jul 29, 2003, 6:44:46 PM7/29/03
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Interesting!

What was the actual frequency? Would you have a list of HF ACARS
frequencies?

Is the coding the same as with VHF ACARS, or entirely different?

Richard

Nigel Puke-Fuui

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Jul 29, 2003, 7:46:14 PM7/29/03
to
On Tue, 29 Jul 2003 13:01:03 GMT, "tim" <hotr...@bigpond.com> wrote:
> Just decoded my first HF ACARS and thought i would share with all! (Sorry
> for the long post)
>
>
> Using PC-HFDL on a 1.7ghz HP Laptop.
>
I have had the PC-HFLD software installed for a couple of days.
Results are identical with yours - excellent!

> Now to find some more active freq's!!
>

For me, the Auckland station provides good signals on all its frequencies, but
I've been unable to hear any others. However, can't hear WWV on 10 or 15 MHz
either, so current radio reception conditions are somewhat crook.
WWV usually romps into here.


tim

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Jul 30, 2003, 4:05:45 AM7/30/03
to
Hi Richard,

The actual frequency was 5583khz (Auckland) ,this and may more were provided
kindly by Kayakkhan in a earlier post but i will list them again in case you
missed his post.

>Here's a few HF ACARS freqs Tim


AUCKLAND 5.583, 10.084, 13.352
BAHRAIN 8.885, 10.045, 11.312, 17.967, 21.982
BARROW 6.646, 8.936
BOLIVIA 11.318, 13.315, 21.997
CALIFORNIA 4.672, 8.559, 10.081, 11.327, 13.276, 21.934
GUAM 8.927, 11.306
HAT YAI 13.270, 17.928
HAWAII 8.912, 10.075, 11.312, 11.348, 17.936
JOHANNESBURG 4.681, 8.834, 21.949
KRASNOYARSK 10.087, 13.321
NEW YORK 5.523, 8.912, 11.315, 13.275, 17.919, 21.934
REYKJAVIK 5.720, 6.712, 8.977, 11.184, 15.025
SHANNON 5.547, 6.532, 8.843, 8.942, 11.384


Other Areas
NCA (North Central America) 2851, 3004, 3019, 4678, 5646, 6592, 100039,
10096, 13303, 17958
NP (North Pacific) 2932, 5628, 6655, 6661, 10048, 11330, 13300, 17904
SAM (South America) 2944, 3479, 4669, 5526, 6649, 8855, 10024, 10096, 11360,
13297, 17907
SAT (South Atlantic) 2854, 2935, 3452, 5565, 6535, 8861, 11291, 13315,
13359, 17955
SEA (South East Asia) 3470, 3485, 5649, 5655, 6556, 8942, 10066, 11396,
13309, 13318, 17907
SP (South Pacific) 3467, 5559, 5643, 8867, 10084, 11327, 13300, 17904

Central West Pacific - CWP
General: 2998, 3455, 4666, 5652, 5661, 6532, 6562, 8903, 10081, 11384,
13300, 17904
CWP
Guam 2998, 6532, 8903, 11384, 13300, 17904
Hong Kong 6532, 8903, 13300
Manila 2998, 6532, 6562, 8903, 13300, 17904
Naha 2998, 4666, 6532, 8903, 11384, 13300
Port Moresby 2998, 6532, 8903, 13300
Seoul 2998, 6532, 8903, 13300
Taipei 6532, 8903, 13300
Tokyo 2998, 4666, 6532, 8903, 13300, 17904


Central East Pacific - CEP
General: 2869, 3413, 4657, 5547, 6673, 8843, 10057, 11282, 13300, 17904
CEP
Honolulu 3413, 5547, 5574, 8843, 11282, 13288, 13354, 17904 San Francisco
2869, 3413, 5547, 5574, 6673, 8843, 10057, 11282, 13288, 13354, 17904


Tim.


"Richard Newman" <nos...@nospam.com> wrote in message
news:3f26f7ca.843986@news-server...


> Interesting!
>
> What was the actual frequency? Would you have a list of HF ACARS
> frequencies?
>
> Is the coding the same as with VHF ACARS, or entirely different?
>
> Richard

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tim

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Jul 30, 2003, 4:01:16 AM7/30/03
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Hi Peter,

Im using PC-HFDL to decode it ,you can grab a copy from
http://www.chbrain.dircon.co.uk/pchfdl.html but get the unsupported version
as it is free ;)

Tim.

"heathernpeter" <heathe...@dnet.aunz.com> wrote in message
news:newscache$xuxsih$9mo$1...@mars.dataline.net.au...


> what software are you using ?

---

tim

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Jul 30, 2003, 4:13:09 AM7/30/03
to
Hi Nigel,

Good to see your getting the same results!

I get all time stations pretty well and im only using a T2FD antenna coupled
to an AR5000 receiver ,all though i did find a bit better reception using my
27mhz StationMaster antenna on some of the freq's!

Btw i found 10087khz (KRASNOYARSK) also provided good decoding results.

Tim.


"Nigel Puke-Fuui" <wan...@myrealbox.com> wrote in message
news:1103_1059522374@Loud_Belch...

Michalkun

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Jul 30, 2003, 5:09:28 PM7/30/03
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"tim" <hotr...@bigpond.com> wrote in
news:t%KVa.299$bo1...@news-server.bigpond.net.au:

> The actual frequency was 5583khz (Auckland) ,this and may more were
> provided kindly by Kayakkhan in a earlier post but i will list them
> again in case you missed his post.
>
>

Can anyone tell me if this is supposed to be dekoded in USB? If yes, how
do you tune the radio?

tim

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Jul 30, 2003, 9:55:19 PM7/30/03
to
Hi Michalkun,

Yes its decoded in USB.

What do you mean "How you tune the radio?" ,basicly you key in the frequency
,start the decoding software (Adjust mic/line-in input for proper decoding
results) and sit back and watch it decode :)

Tim.


"Michalkun" <buran...@yahoo.com> wrote in message
news:Xns93C899F7ACF30...@130.133.1.4...

scanman

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Jul 30, 2003, 10:35:14 PM7/30/03
to
If you have a HF set and don't know how to tune USB, you basically
don't know how to use the radio.
So sell it and quit while your ahead.

Mark S.

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Jul 31, 2003, 9:15:39 PM7/31/03
to
In article <3f28804...@news.internode.on.net>,
nos...@nospam.com.au (scanman) wrote:

> If you have a HF set and don't know how to tune USB, you basically
> don't know how to use the radio.
> So sell it and quit while your ahead.
>

Some HF Radios ONLY have a BFO for tuning in SSB/CW/RTTY/WeFAX/SSTV etc.
And if it has an analog dial the tuning isn't very accurate. It takes
more skill for a person with this type of radio to use his computer to
decode digital signals than someone with a $2000 radio.

Mark in
Davis, Ca. USA

tim

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Jul 31, 2003, 9:55:53 PM7/31/03
to
Be it a $10,000 Radio or a $10 Radio i wouldn't say it takes more skill
,rather it takes more patients and time ,there is nothing hard about turning
a dial or 2 and fine tuning till you get the required frequency it just
takes a little longer and abit more fiddly with an older BFO style rig!

As for the Orginal poster: if they could let us know what receiver they are
using and where they are located maybe we can help abit more? ,from his
posting header it looks as though he maybe located in Germany?

(For BFO) But for starters you basicly need to get as close as possible to
the frequency intended for decoding which you will know by the funny
sounding buzzing/whirring noise and then once you have that part its just a
matter of tuning either up or down till you start to see some decoding
results ,if you are getting weird or jumbled characters and have tried
tuning your receiver up or down with no results then you will need to play
around with the LINE-IN or MIC volume on your PC ,no good telling you what
mine is set to as all soundcards are different.

To know what to listen for take a look at
http://rover.wiesbaden.netsurf.de/~signals/WAV/HFDL.HTML ,most HFDL (HF
DataLink) ground stations transmit an "Im up and active" sequence about
every 2 minutes so any aircraft within range knows it has an active station
should it wish to transmit any data which is good for fine tuning your
receiver or soundcard inputs.

For a list of HFDL Freq's
http://www.kf4dmp.com/swl/swl_page.asp?action=hf_aircraft_frequencies

Hope this helps.

Tim.


"Mark S." <mark...@softhome.net> wrote in message
news:mark1smi-D38AD8...@corp-radius.supernews.com...


> Some HF Radios ONLY have a BFO for tuning in SSB/CW/RTTY/WeFAX/SSTV etc.
> And if it has an analog dial the tuning isn't very accurate. It takes
> more skill for a person with this type of radio to use his computer to
> decode digital signals than someone with a $2000 radio.
>
> Mark in
> Davis, Ca. USA

Nigel Puke-Fuui

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Aug 1, 2003, 3:05:24 AM8/1/03
to
On Wed, 30 Jul 2003 08:13:09 GMT, "tim" <hotr...@bigpond.com> wrote:

> Btw i found 10087khz (KRASNOYARSK) also provided good decoding results.
>

Thanks - I'll give 10087 a try....

nig.


Richard Newman

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Aug 1, 2003, 6:02:38 AM8/1/03
to
Thank you very much, Tim, this is great!

By the way is the coding method they use the same as with VHF ACARS?
I guess probably not, but I thought I'd ask anyway...

What software are you using for this?

Richard

tim

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Aug 1, 2003, 6:30:15 AM8/1/03
to
Hi Richard,

No Problems at all :)

Im not 100% sure but yes i think it would be way different coding to VHF
ACARS.

Im using PC-HFDL for Decoding ,you can grab the unsupported version which
is free from http://www.chbrain.dircon.co.uk/pchfdl.html

Happy Decoding!

Tim.

"Richard Newman" <nos...@nospam.com> wrote in message

news:3f2a39b6.4205767@news-server...


> Thank you very much, Tim, this is great!
>
> By the way is the coding method they use the same as with VHF ACARS?
> I guess probably not, but I thought I'd ask anyway...
>
> What software are you using for this?
>
> Richard

---

tim

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Aug 1, 2003, 10:13:38 AM8/1/03
to
Just got one in from Russia! (10087khz)

------------------------------------------------------

Preamble 300 bps 1.8 sec Interleaver FREQ ERR -31.404330 Hz Errors 0


[SPDU CRC PASS]
Version = 0 * Freq utilisation = LIGHT * ISO 8208 = Not Supported
No change, same frequency, Ground Station UP

Ground Station ID = 14 KRASNOYARSK - RUSSIA
Frame Index = 1587 * Frame offset = 8 * UTC = 14:06:43 SYNCHED


LPDU ACK codes
ACK S11(N-3) ID 00
ACK S12(N-3) ID 00
ACK S01(N-2) ID 00
ACK S02(N-2) ID 00
ACK S03(N-2) ID 00
ACK S04(N-2) ID 00
ACK S05(N-2) ID 00
ACK S06(N-2) ID 00
ACK S07(N-2) ID 00
ACK S08(N-2) ID 00
ACK S09(N-2) ID 00
ACK S10(N-2) ID 00
ACK S11(N-2) ID 00

ACK S12(N-2) ID 00


ACK S01(N-1) ID 00
ACK S02(N-1) ID 00
ACK S03(N-1) ID 00
ACK S04(N-1) ID 00
ACK S05(N-1) ID 00
ACK S06(N-1) ID 00
ACK S07(N-1) ID 00
ACK S08(N-1) ID 00
ACK S09(N-1) ID 00
ACK S10(N-1) ID 00
Slot assignment codes
ASN S03 (N+0) Random Access

ASN S04 (N+0) Random Access


ASN S05 (N+0) Random Access
ASN S06 (N+0) Random Access
ASN S07 (N+0) Random Access
ASN S08 (N+0) Random Access
ASN S09 (N+0) Random Access
ASN S10 (N+0) Random Access
ASN S11 (N+0) Random Access
ASN S12 (N+1) Random Access
ASN S01 (N+1) Random Access
ASN S02 (N+1) Random Access
Lowest Priority accepted 0
Database Version 24

This GS active freqs 2
GS2 ID = 15 BAHRAIN UTC LOCKED Active freqs 2 5
GS3 ID = 16 GUAM UTC LOCKED Active freqs 3
00 8E 33 86 00 00 00 00 00 00 00 00 00 00 00 ..3 ............
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ...............
00 00 00 00 00 00 00 00 00 00 FE FE FE FE FE ...............
FE FE FE FE FE FE FE 00 18 20 00 00 8F 12 00 ...............
00 59 00 00 0A CD 00 .Y ....

Tim.


"Nigel Puke-Fuui" <wan...@myrealbox.com> wrote in message

news:1103_1059721524@Loud_Belch...

tim

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Aug 1, 2003, 10:21:35 AM8/1/03
to
Finally got an Aircraft Report rather than a ground station on 10087khz!

Few errors because the signal was fading but it managed to get the first
bit.

----------------------------------------------------------------------------
----

Preamble 300 bps 1.8 sec Interleaver FREQ ERR -0.042628 Hz Errors 6
[MPDU AIR CRC PASS]
Nr LPDUs = 1 Ground station ID KRASNOYARSK - RUSSIA SYNCHED
Aircraft ID 6E
Slots Requested medium = 0 Low = 0
Max Bit rate 1200 bps U(R) = 0 UR(R)vect = 0
[LPDU UNNUMBERED DATA]
[HFNPDU PERFORMANCE]
14:13:42 UTC Flight ID = LH8470 LAT 22 3 56 N LON 113 45 23 E
07 8E 6E 00 03 00 31 0D 78 0D FF D1 4C 48 38 ..n ...1 .x ...L H 8
34 37 30 0F FB B0 E4 50 0B 64 01 4A 02 0A 00 4 7 0 ....P .d .J ...
00 71 46 00 00 00 00 00 00 00 01 00 00 00 00 .q F ............
05 00 02 00 00 00 03 00 00 00 00 07 27 6C 00 .............l .
00 00 00 00 00 00 00 .......

Tim.


Michalkun

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Aug 1, 2003, 11:09:24 AM8/1/03
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"tim" <hotr...@bigpond.com> wrote in
news:bG_Va.1236$bo1....@news-server.bigpond.net.au:

OK, I thought there is some offset of USB.

Matt

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Aug 1, 2003, 9:59:01 PM8/1/03
to
Rough guess, that would be originating from near or over southern china.
Would need to grab an atlas to confirm though. Not a bad capture.


Matt

"tim" <hotr...@bigpond.com> wrote in message

news:PHuWa.4809$bo1....@news-server.bigpond.net.au...

kevcat

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Aug 2, 2003, 9:46:02 AM8/2/03
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there could be, depends on the radio
My two older HF RXers you have to tune about 2Khz higher on the display
to be on the correct freq on USB and about 3Khz below for the correct
LSB
and my other HFs display the correct freq and automaically compensate
for the offset

Kev

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