"We have not lost The Park, The Park have lost us"

Farewell to Bletchley Park...

The Milton Keynes Amateur Radio Society (MKARS), the resident radio club at Bletchley Park for nearly twenty years, will be leaving the Park as of the 1st January 2013. To mark this occasion MKARS will be holding a 'QSO party' on the weekend of the 15th-16th December.

All MKARS members and ex-members are invited to come and operate GB2BP from Generator House 2, our current premises at Bletchley Park, for the last time.
GB2BP and MKARS will in the future only be operational from Bletchley Park by invitation during 'radio related' events.

This is possibly your last chance to operate this charismatic call sign. Be a part of MKARS continuing proud history. If you do not normally attend MKARS events, this one is a 'MUST'. So put the Christmas shopping on the back burner and be there.
In the future you will be able to say 'I WAS THERE, my name is in the log'. Will has threatened to cook burgers and Dave is trying to obtain a 'Big Linear'.

Tea and coffee will be provided. Hopefully some beer as well.
The event will start early on Saturday morning, as soon as we can get on to The Park and finish when we have to leave, and the same again on Sunday.
We, MKARS, can walk out of Bletchley Park with our heads held high knowing that all those years ago, when Bletchley Park was on its knees, MKARS was one of the many local groups that helped make the Park into the great museum it is today. MKARS is a great club with a great future. Be a part of it!

We have not lost The Park, The Park have lost us.

By Graham (G7OSR) on the 20th November 2012

Source: http://www.mkars.org.uk/news/article/33/farewell_to_bletchley_park_-_gb2bp_qso_party

Yesterday, 16 December 2012, 1354z- 1523z, I recorded the final 1.5 hour of the farewell transmission on 7143 LSB using the University of Twente webSDR facility.

Here is the recording.

E25a on 9450 kHz logged using Univ. of Twente WebSDR

E25a was heard using the WebSDR of University of Twente. This is great because listeners across the globe, can listen to E25 on 9450 kHz!

A carrier was in progress at 1315z, 07/10/2012 on 9450 kHz. Then a 1000 Hz tone appeared and after a while the YL started calling "785 8". She ended with "Message" x3 at ~1319z.

Here is the sound sample.

UNID 12371 USB signal: Mystery solved.

The peculiar signal seems to be the result of audio feedback:

http://signals.taunus.de/PUB/Feedback.HTML

The above article resolves most of the similar "mystery" signals like "the whales". However, I can't forget that...

Any sufficiently advanced technology is indistinguishable from noise.

UNID (encrypted voice?) on 12371 kHz using University of Twente web SDR

I had the chance to use the free web SDR service provided by the University of Twente in Netherlands. It covers the entire HF and is an excellent way to monitor the bands from office :-)

As I was scanning the bands, I found a peculiar transmission on 12371 USB at approx. 1237z (14/09). I am not sure if the tuning and mode selected is correct, but here is what I heard (recorded from the soundcard output), and this is a spectrogram image:

 12371USB 14/09/2012 1237z (click for larger)

Any ideas?

73
Manolis

Links to files issue

I think now all the links to audio files works as expected! Sorry for the inconvenience!

Update regarding the UNID station found on 11000 kHz

The message which the UNID station found on 11MHz sent, was:

GR35
NO125
MESSAGE
KLPAS BDMGC SPADM SPILB KADCC SBAPP OCMZO PADZZ SPAIK CISBK
QUVAD APCNS SBAAA NOZII KKQUS CAPAA NBOKF EPFFZ PACCM SBADN
KLPAS NNCOM SIKSF PCPIF MKQZF SQUFB SIMCD SPPGC MSNQU ZOIKF
CEPQU VIIOA FFEKS NZPAC LOPSS

It is a short message for giving trustworthy analysis results. But it doesn't seem too "random". And there are only 19 out of the 26 letters of the Latin alphabet.

The same station reappeared on 10400 kHz, between roughly 1400z - 1600z with the same message, and occasionally classical music . Also, I heard some OM talking (not sure for the language). Unfortunately I don't have any sound samples.

To be honest, I think this is a hoax. But I'll give it a try whenever I have free time, just for the fun of it!

UNID station on 11000 kHz

A UNID transmission began at 1429z on 11000 kHz, USB mode. Moderate signal strength with some QSB. Note the noisy background and the funny sounds near the beginning and the distinct pronunciation of the letter v. It faded out at 1503z.

Sound sample