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Author Topic: Radio Echo One 6925 AM 2227 UTC 14 Oct 2013  (Read 4107 times)

Offline ChrisSmolinski

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Radio Echo One 6925 AM 2227 UTC 14 Oct 2013
« on: October 14, 2013, 2228 UTC »
6924.65 AM
ID at 2239z.
About an S8 here.

« Last Edit: October 14, 2013, 2240 UTC by ChrisSmolinski »
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Chris Smolinski
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Offline jFarley

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Re: UNID 6925 AM 2227 UTC 14 Oct 2013
« Reply #1 on: October 14, 2013, 2231 UTC »
2226 carrier on
2226 YL dance track

S6 and fady
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Offline ChrisLobdell

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Re: UNID 6925 AM 2227 UTC 14 Oct 2013
« Reply #2 on: October 14, 2013, 2231 UTC »
Music started at 2229, about S-7 here  Echo 1? Yup ID 2231
Thanks for the Lorde song!!
SSTV 2251
225 GSTQ what else? lol.
Thanks for the dedication E1
« Last Edit: October 14, 2013, 2256 UTC by Chris Lobdell »
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Offline ChrisSmolinski

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Re: UNID 6925 AM 2227 UTC 14 Oct 2013
« Reply #3 on: October 14, 2013, 2234 UTC »
Yes, music now. Nothing I recognize yet :-)
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Chris Smolinski
Westminster, MD
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Offline halifaxtap

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Re: UNID 6925 AM 2227 UTC 14 Oct 2013
« Reply #4 on: October 14, 2013, 2238 UTC »
S7-9 here
2238..rock tune
2238  Radio Echo 1  ID
2241 On East-West line to me,
2242 Address for reception reports, ID
Audio a little distorted
2246 Shoutout to Chris Lobdell, and song dedication
2252 SSTV.. I am not decoding this very well... ah there we go.. A union Jack
2252  God Save the Queen
2256  Off
« Last Edit: October 14, 2013, 2256 UTC by halifaxtap »
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Offline ulx2

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Re: Radio Echo One 6925 AM 2227 UTC 14 Oct 2013
« Reply #5 on: October 14, 2013, 2256 UTC »
Only a carrier here.
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LOC: Kyiv, Ukraine
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Offline myteaquinn

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Re: Radio Echo One 6925 AM 2227 UTC 14 Oct 2013
« Reply #6 on: October 14, 2013, 2259 UTC »
Kind of a crappy image thanks to the band conditions here.



By the way thanks for the program Radio Echo One.
« Last Edit: October 14, 2013, 2313 UTC by myteaquinn »
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Offline Echo_One

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Re: Radio Echo One 6925 AM 2227 UTC 14 Oct 2013
« Reply #7 on: October 15, 2013, 1000 UTC »
If you want to run any recordings again, the SSTV was in Scottie2
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Offline ChrisSmolinski

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Re: Radio Echo One 6925 AM 2227 UTC 14 Oct 2013
« Reply #8 on: October 15, 2013, 1207 UTC »
The extremely slanted image is an indicator of a severe timing problem. This can happen if the SSTV software used to generate the image is not properly calibrated, or can be induced by encoding the audio as an mp3 or other compressed format. I did decode two of the images, and had to make huge adjustments to the timing a lot to get rid of the slant.



« Last Edit: October 15, 2013, 1211 UTC by ChrisSmolinski »
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Chris Smolinski
Westminster, MD
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Offline Echo_One

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Re: Radio Echo One 6925 AM 2227 UTC 14 Oct 2013
« Reply #9 on: October 15, 2013, 1214 UTC »
Quote from: ChrisSmolinski on October 15, 2013, 1207 UTC
The extremely slanted image is an indicator of a severe timing problem. This can happen if the SSTV software used to generate the image is not properly calibrated, or can be induced by encoding the audio as an mp3 or other compressed format. I did decode two of the images, and had to make huge adjustments to the timing a lot to get rid of the slant.





The only way for me to save the SSTV audio is by recoding in WAV and then implanting into the show which saves as WMA.

For the record, the images are

1. Pikachu

2. York Railway Station (an awesome place to go spotting - and I took the picture myself)

3. Union Jack
« Last Edit: October 15, 2013, 1221 UTC by Echo_One »
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Offline ChrisSmolinski

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Re: Radio Echo One 6925 AM 2227 UTC 14 Oct 2013
« Reply #10 on: October 15, 2013, 1221 UTC »
Keeping the show as a WAV file would eliminate the timing problem, but the resulting audio files would be huge. You could keep the SSTV as a separate audio file in WAV format, and send the program audio as an mp3 or WMA or whatever, but that might be a hassle for your relay operator?

Also, for whatever reason, I have noticed that SSTV images, when transmitted in AM mode, often looked "washed out". I'm not sure if this is due to the transmitting or receiving side (or both). IIRC I've sometimes demodulated them in SSB mode, resulting in a slightly better image.
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Chris Smolinski
Westminster, MD
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Offline Echo_One

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Re: Radio Echo One 6925 AM 2227 UTC 14 Oct 2013
« Reply #11 on: October 15, 2013, 1228 UTC »
It could be a hassle, but it is something to think about... I will discuss with my relay operator as you suggest.

Anyway, where you heard me from, did I bury the Peskies?

How did the first image come out? The Pikachu one
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Offline ChrisSmolinski

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Re: Radio Echo One 6925 AM 2227 UTC 14 Oct 2013
« Reply #12 on: October 15, 2013, 1230 UTC »
Yes, the signal from the first transmission was strong. The later show, around 0200z, was quite weak.

The first SSTV image was split between two SDR recording files, so I didn't decode it.
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Chris Smolinski
Westminster, MD
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netSDR / AFE822x / AirSpy HF+ / KiwiSDR / 900 ft Horz skyloop / 500 ft NE beverage / 250 ft V Beam / 58 ft T2FD / 120 ft T2FD / 400 ft south beverage / 43m, 20m, 10m  dipoles / Crossed Parallel Loop / Discone in a tree

Offline PRBRELAYS

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Re: Radio Echo One 6925 AM 2227 UTC 14 Oct 2013
« Reply #13 on: October 15, 2013, 1713 UTC »
It's all my fault, I took the file and saved it as an mp3 file! :(
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Offline ChrisSmolinski

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Re: Radio Echo One 6925 AM 2227 UTC 14 Oct 2013
« Reply #14 on: October 15, 2013, 1754 UTC »
Quote from: PRBRELAYS on October 15, 2013, 1713 UTC
It's all my fault, I took the file and saved it as an mp3 file! :(

It would be interesting to run the original WMA file through an SSTV decoder, and see if the slant issue is there as well.
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Chris Smolinski
Westminster, MD
eQSLs appreciated! csmolinski@blackcatsystems.com
netSDR / AFE822x / AirSpy HF+ / KiwiSDR / 900 ft Horz skyloop / 500 ft NE beverage / 250 ft V Beam / 58 ft T2FD / 120 ft T2FD / 400 ft south beverage / 43m, 20m, 10m  dipoles / Crossed Parallel Loop / Discone in a tree
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