DRM Software Radio Forums  

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

Showing results 1 to 25 of 102
Search took 0.00 seconds.
Search: Posts Made By: pksato
Forum: Reception Results - Recent Posts 30-10-2016, 16:40
Replies: 10
Views: 6,098
Posted By pksato
Hi, Last night (Oct 29) a received few minutes of...

Hi,
Last night (Oct 29) a received few minutes of EBC test transmission, and record this video of listen on Morphy Richards 27024.
https://youtu.be/MxdTnHBsnDw
I am 1000 km far from the site of...
Forum: General Topics 01-04-2015, 14:29
Replies: 41
Views: 13,104
Posted By pksato
Hi Philip, Computer and other electric/electronic...

Hi Philip,
Computer and other electric/electronic devices generate lots of radio interference signals. A wide band write noise like signal.
MR radio itself, generate self interfering signals.
Put...
Forum: Receiver Modifications 30-03-2015, 14:23
Replies: 4
Views: 4,664
Posted By pksato
Hi, Is not complete documented, but this pdf...

Hi,
Is not complete documented, but this pdf contain schematics and PCB layout, and bill list.
https://dl.dropboxusercontent.com/u/10287126/sdr-drm/Conversor/Conversor_adaptador_drm_rv1.pdf
Forum: Receiver Modifications 26-03-2015, 19:57
Replies: 4
Views: 4,664
Posted By pksato
Hi Power from USB port is not a good option,...

Hi
Power from USB port is not a good option, generates awful noise, that cover dozens of MHz. Connecting audio cable, already generates a lots of noise, spreading over 3kHz or rising noise flow by...
Forum: Receiver Modifications 17-03-2015, 13:45
Replies: 4
Views: 4,664
Posted By pksato
Revisiting IF down converters

A years ago I tested some circuits of IF down converters, but with poor results.
One problems was lack of stable 443kHz or 467kHz stable frequency, and a good shortwave radio (still looking for a...
Forum: General Topics 12-01-2015, 10:40
Replies: 4
Views: 3,405
Posted By pksato
HI, Radioscape RS500 module used on MR27024 have...

HI,
Radioscape RS500 module used on MR27024 have a pin provision for IR remote control. But, I don't know if on MR27024 have a sensor, need to open and remove LCD board to verify.
If have, need to...
Forum: Reception Results - Recent Posts 03-01-2015, 19:12
Replies: 1,456
Views: 355,664
Posted By pksato
Hi, Few audio frame decoded, but still in silence.

Hi,
Few audio frame decoded, but still in silence.
Forum: Reception Results - Recent Posts 03-01-2015, 19:01
Replies: 43
Views: 28,134
Posted By pksato
Hi, Few minutes of audio this morning. AIR intro...

Hi,
Few minutes of audio this morning.
AIR intro sound from MR27024 wake me.
Forum: Reception Results - Recent Posts 01-01-2015, 14:42
Replies: 43
Views: 28,134
Posted By pksato
Hi, My first 2015 log with audio frames. DReaM...

Hi,
My first 2015 log with audio frames.
DReaM and MR27024 was monitoring.
DReaM not set to record audio.
MR scheduled to record, but none was saved.
Forum: Reception Results - Recent Posts 29-12-2014, 16:35
Replies: 43
Views: 28,134
Posted By pksato
Hi, Another good reception this Monday morning,...

Hi,
Another good reception this Monday morning, 60% of audio decoded.
Forum: Receiver Modifications 28-12-2014, 19:43
Replies: 13
Views: 14,533
Posted By pksato
Hi, My radio was not holding date, all time when...

Hi,
My radio was not holding date, all time when I apply power, its is reset time, and need to set clock.
After some search I found a datasheet with pinout of RS500 module, and other information, can...
Forum: Reception Results - Recent Posts 28-12-2014, 19:31
Replies: 1,456
Views: 355,664
Posted By pksato
Hi, Signal get strong at end, MSC decoded, but no...

Hi,
Signal get strong at end, MSC decoded, but no audio stream (silence). Some Intern unplug audio cable?
Forum: Reception Results - Recent Posts 25-12-2014, 15:01
Replies: 43
Views: 28,134
Posted By pksato
Hi, This xmas morning reception on Brazil, strong...

Hi,
This xmas morning reception on Brazil, strong signal with lots of audio frame decoded.
On DReaM and Morphy Richards 27024.

Poor video showing reception on Morphy...
Forum: Reception Results - Recent Posts 22-12-2014, 15:59
Replies: 43
Views: 28,134
Posted By pksato
AIR transmitting with 20kHz...

AIR transmitting with 20kHz BW.
https://dl.dropboxusercontent.com/u/10287126/sdr-drm/air/2014-12-22-080855.png

AIR 17885kHz 10:00 - 11:00 UTC
Modo C, 20kHz
16/64 QAM
AAC mono 11.76kHz
Forum: General Topics 22-12-2014, 15:56
Replies: 1
Views: 2,517
Posted By pksato
Now I have a proof. (or not :)) AIR transmission...

Now I have a proof. (or not :))
AIR transmission on 17895kHz
https://dl.dropboxusercontent.com/u/10287126/sdr-drm/air/2014-12-22-080855.png
Mode C / 20kHz
16/64 QAM
AAC mono 11.76kHz
Forum: General Topics 21-12-2014, 11:46
Replies: 1
Views: 2,517
Posted By pksato
DRM TX with 20kHz channel

Hi,
I pickup some AIR transmission using 20kHz of bandwidth, on south of Brazil.
20:45 - 22:30 11620kHz
22:45 - 00:45 13605kHz
11:45 - 13:15 15795kHz

Weak signal, hard to sync.
Forum: Reception Results - Recent Posts 20-12-2014, 20:20
Replies: 131
Views: 74,760
Posted By pksato
Hi, 20kHz RF base band...

Hi,
20kHz RF base band channel?
https://dl.dropboxusercontent.com/u/10287126/sdr-drm/2014-12-20-190317.png
Weak signal. No frame sync.
Forum: Receiver Modifications 20-12-2014, 00:44
Replies: 13
Views: 14,533
Posted By pksato
Now I have this radio. But none DRM signal. :(...

Now I have this radio. But none DRM signal. :(
Ok, I can tune some DRM TX, but most have weak signal.
Using Dream and home made HF SDR, I pickup AIR, RNZI, and others, some time with audio.
I buy MR...
Forum: Reception Results - Recent Posts 24-02-2014, 22:38
Replies: 131
Views: 74,760
Posted By pksato
Hi. I pickup this TX on Brazil, with around 8dB...

Hi.
I pickup this TX on Brazil, with around 8dB of RF SNR. But never get frame sync. on DReaM.
The spectrum is more dense that other DRM30 signals.
If codec is only 8kHz, It can be easy to decode,...
Forum: General Topics 13-02-2014, 20:17
Replies: 87
Views: 49,662
Posted By pksato
EBC starting DRM tests? This evening (18:35 BRST....

EBC starting DRM tests?
This evening (18:35 BRST. 20:35UTC) a tuned this signal on 5990kHz, and stopped after 21h UTC. Very weak and not 'linear' like other weak DRM...
Forum: Reception Results - Recent Posts 04-07-2013, 01:22
Replies: 32
Views: 9,393
Posted By pksato
Hi, Another sporadic DRM reception report. 81.98%...

Hi,
Another sporadic DRM reception report.
81.98% of audio frames decoded, not bad.
Forum: Reception Results - Recent Posts 12-04-2013, 01:47
Replies: 32
Views: 9,393
Posted By pksato
Hi. Good reception tonight, 89% of audio...

Hi.
Good reception tonight, 89% of audio decoded.
I test simultaneous reception using RTLSDR (rtl) and HF SDR (sdr).
Signal on rtl is more weak and have some unwanted signals.
On good condition, rtl...
Forum: Receiver Modifications 10-04-2013, 02:10
Replies: 35
Views: 29,877
Posted By pksato
Hi, I test this setup this night. Instead a GUI...

Hi,
I test this setup this night.
Instead a GUI sdr software, I used the rtl_fm, a command line sdr receiver for rtlsdr.
The advantage of rtl_fm is a low cpu usage.
Computer is a AMD A4-3400 2.7GHz...
Forum: Reception Results - Recent Posts 10-04-2013, 02:01
Replies: 32
Views: 9,393
Posted By pksato
Hi, This time I try some weird setup. A RTLSDR...

Hi,
This time I try some weird setup.
A RTLSDR dongle as receiver and a upconverter.
RTLSDR is not compatible with DReaM, need some pre processing to send signal from RTL to DReaM. To do it, I used...
Forum: Reception Results - Recent Posts 08-04-2013, 01:29
Replies: 479
Views: 97,688
Posted By pksato
Sunday evening, start with good signal, and drop...

Sunday evening, start with good signal, and drop around 21:15 due rise on noise floor (Switching on lighting).
Showing results 1 to 25 of 102

 
Forum Jump

All times are GMT. The time now is 02:53.


Powered by vBulletin Version 3.5.3
Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.