DRM Software Radio Forums  

Go Back   DRM Software Radio Forums > DRM Software Radio - User Forums > Reception Results - Recent Posts
User Name
Password
FAQ Members List Calendar Search Today's Posts Mark Forums Read

Reply
 
Thread Tools Search this Thread Display Modes
Old 02-10-2015, 13:43   #301
mitajohn
Registered User
 
mitajohn's Avatar
 
Join Date: Nov 2002
Location: Athens - Greece
Posts: 6,890
Oct_01

A result for 275 mins at 98.9% CDA and 31.1 dB max SNR.
Attached Images
File Type: png 7550_151001_1754_mitajohn.png (27.3 KB, 376 views)
File Type: png 7550-151001-1754-2230-mitajohn.png (40.5 KB, 391 views)
__________________
Regards, John.
mitajohn is offline   Reply With Quote
Old 02-10-2015, 22:05   #302
mitajohn
Registered User
 
mitajohn's Avatar
 
Join Date: Nov 2002
Location: Athens - Greece
Posts: 6,890
Oct_02

239 mins at 98% CDA.
Attached Images
File Type: png 7550-151002-1800-2200-mitajohn.png (39.2 KB, 382 views)
File Type: png 7550_151002_1800_mitajohn.png (27.0 KB, 369 views)
__________________
Regards, John.
mitajohn is offline   Reply With Quote
Old 04-10-2015, 07:25   #303
Digger
Registered User
 
Digger's Avatar
 
Join Date: Mar 2005
Location: Shizuoka City, Japan
Posts: 9,865
Two logs, one from the 2nd and the second from 3rd October, both about 290 minutes in length. Both logs with 99.99% decoded audio.

In case the audio percentage is higher than 99.995% it will become a "100%" in the Log-Plotter.
Attached Images
File Type: png 7550-151002-1742-2229-Terje@SE.png (38.8 KB, 373 views)
File Type: png 7550-151003-1736-2229-Terje@SE.png (39.6 KB, 419 views)
__________________
Regards,
Terje

https://www.hobbyradio.se/en/drm/web....index_en.html
Digger is offline   Reply With Quote
Old 04-10-2015, 22:42   #304
mitajohn
Registered User
 
mitajohn's Avatar
 
Join Date: Nov 2002
Location: Athens - Greece
Posts: 6,890
Oct_04

Mixed results. After 21H42 the signal dropped by ~20 dB causing decoding problems. 92.6% CDA and 33.4 dB max SNR, 197 mins log.
Attached Images
File Type: png 7550-151004-1912-2230-mitajohn.png (41.8 KB, 407 views)
File Type: png 7550_151004_1912_mitajohn.png (28.8 KB, 398 views)
__________________
Regards, John.
mitajohn is offline   Reply With Quote
Old 05-10-2015, 22:41   #305
mitajohn
Registered User
 
mitajohn's Avatar
 
Join Date: Nov 2002
Location: Athens - Greece
Posts: 6,890
Oct_05

The signal sometimes reached 80dBuV and high SNR values recorded (max SNR 34.5 dB) but the SNR figure was changing very rapidly. A 286 mins log, 96.9% CDA. There was a period of very bad decoding.
Attached Images
File Type: png 7550-151005-1743-2230-mitajohn.png (40.6 KB, 411 views)
File Type: png 7550_151005_1743_mitajohn.png (27.9 KB, 390 views)
__________________
Regards, John.
mitajohn is offline   Reply With Quote
Old 05-10-2015, 23:06   #306
AF4MP
Registered User
 
Join Date: Apr 2006
Location: Roswell, Georgia, USA
Posts: 10,558
AIR Bangalore India 7550 kHz reception near Atlanta, Georgia, USA

This evening's reception report - no audio decode, about 7 dB max SNR.
Attached Images
File Type: png 7550-151005-2130-2230-Zyg.png (33.5 KB, 379 views)
__________________
73,

-Zyg- AF4MP
3402' N, 8424' W
EM74ta
AF4MP is offline   Reply With Quote
Old 25-05-2016, 09:13   #307
Per
Registered User
 
Per's Avatar
 
Join Date: Nov 2002
Location: Stockholm - Sweden
Posts: 682
I gave this QRG at test last night, May 24 @ 21:00 UTC.
Good reception of AIR and the GOS, but all in AM.
__________________
73's Per - SM0ITS
Per is offline   Reply With Quote
Old 26-05-2016, 05:16   #308
Digger
Registered User
 
Digger's Avatar
 
Join Date: Mar 2005
Location: Shizuoka City, Japan
Posts: 9,865
Exactly one month ago I got a message from AIR that they had some spare part problems but would be back on air with DRM again soon.
__________________
Regards,
Terje

https://www.hobbyradio.se/en/drm/web....index_en.html
Digger is offline   Reply With Quote
Old 18-06-2016, 18:26   #309
LoTHar57
Registered User
 
Join Date: May 2015
Location: northeast France
Posts: 24
today gosIV is back on 7550khz at 1820utc Northeast France
http://imagesia.com/gosiv-18062016_18pv8
LoTHar57 is offline   Reply With Quote
Old 18-06-2016, 19:20   #310
MARCEL
Registered User
 
Join Date: Mar 2010
Location: Northeast France
Posts: 400
Hello,

Yes good signal SNR 22 to 23 db two Channel.
__________________
DRM:
Mixer Platine MF9 Mhz with Dream

Antenna:
Mantova Turbo 5/8 wave for 27 mhz
Long Wire 80 meter
MARCEL is offline   Reply With Quote
Old 18-06-2016, 19:30   #311
G4TMV
Registered User
 
G4TMV's Avatar
 
Join Date: Feb 2015
Location: East Lancashire, north west England
Posts: 256
Good the have them back again, especially as it's their 80th birthday.
__________________
Alan.

Modified NRD-525G with Radiokit DRM Decoder Board,
SDRplay RSP-1A, Airspy HF+ Discovery, Dream v2.1.1

Lancashire, UK 53:39.18N 02:10.28W IO83vp
G4TMV is offline   Reply With Quote
Old 18-06-2016, 22:33   #312
mitajohn
Registered User
 
mitajohn's Avatar
 
Join Date: Nov 2002
Location: Athens - Greece
Posts: 6,890
June_18

A 30 mins log at 99.9% CDA, the signal was ~60dBuV.
Attached Images
File Type: png 7550_160618_2159_mitajohn.png (23.8 KB, 384 views)
File Type: png 7550-160618-2159-2230-mitajohn.png (34.4 KB, 317 views)
__________________
Regards, John.
mitajohn is offline   Reply With Quote
Old 18-06-2016, 23:18   #313
PhilipOneL
Registered User
 
Join Date: Oct 2014
Location: Eastern Newfoundland
Posts: 219
Having been alerted by an email from Terje, which I read only a few minutes before AIR signed off, I rushed upstairs from my supper-making to check the signal of AIR on 7550 kHz here in Eastern Newfoundland. My Morphy-Richards 27024, with its eight-metre wire attached, detected and was able to decode the labels from the two channels, but with no audio. The MER rates were too low, from 3 db to 6 dB.

I am glad they are back and I'll be checking other evenings.
PhilipOneL is offline   Reply With Quote
Old 19-06-2016, 07:22   #314
Digger
Registered User
 
Digger's Avatar
 
Join Date: Mar 2005
Location: Shizuoka City, Japan
Posts: 9,865
Yes, nice to have them back again on 7550 with a rock solid carrier. At 1925 UTC the channels were labeled GOS-IV and VIVIDH BHARATI. Later the latter switched to FRENCH around 1945 UTC. There was a mode change at 2042 UTC which explains the label "MAIN CHANNEL" in John's log.

My log was set to shut down my PC automatically, but I mistook the time, so I missed the last 45 minutes.
Attached Images
File Type: png 7550-160618-1915-2144-Terje@SE.png (35.9 KB, 336 views)
__________________
Regards,
Terje

https://www.hobbyradio.se/en/drm/web....index_en.html
Digger is offline   Reply With Quote
Old 19-06-2016, 22:06   #315
PhilipOneL
Registered User
 
Join Date: Oct 2014
Location: Eastern Newfoundland
Posts: 219
This evening, Sunday 19/6/16, at 2200, I am receiving the two AIR channels with about 95% audio decoding. MER rates are between 9 and 13 dB.

MR 27024 with eight-metre wire antenna, in Eastern Newfoundland.
My Avion set (with a Sony loop "active antenna" is showing 9 -12 dB MER but is unable to decode any audio.
PhilipOneL is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is Off
HTML code is Off
Forum Jump


All times are GMT. The time now is 06:09.


Powered by vBulletin Version 3.5.3
Copyright ©2000 - 2020, Jelsoft Enterprises Ltd.