View Full Version : DRM from CBC (9800 kHz from Sackville)
Pages :
1
2
3
4
5
6
7
8
[
9]
10
11
Just a blip received on the first transmission. No signal received on the second. :(
Brendan1
12-09-2010, 04:35
This was probably the poorest day for reception of RCI here, ever. Almost nothing in the morning, and what look like 'false positives' during the afternoon session. Absolutely the worst.
Brendan1
12-09-2010, 21:56
I don't know but I think RCI may be off air today. No signal this morning, virtually nothing this afternoon either, or the ionospheric absorption is near perfect for the last two days. Only some minor, possibly false, signal data on the one graph. :(
Brendan, I think you are correct - it appears that CBC/RCI was not transmitting. My logs show no signals received. :confused:
Brendan1
13-09-2010, 23:13
Definitely on-air today: a very mediocre morning with a much better afternoon.
mitajohn
14-09-2010, 21:43
Hi all,
The signal was good tonight. At 21:12 a co-channel carrier appeared affecting the decoding and SNR. At 21:29 an AM signal on 9810 kHz appeared and killed DRM by its splatters...
Brendan1
14-09-2010, 23:08
The morning shows some improvement, and the afternoon was excellent. :)
Brendan1
15-09-2010, 22:59
Dream wasn't working until the afternoon. I had to reset it and the logger at lunch time.
Quite good reception too! :)
FritzWue
16-09-2010, 17:24
65% CDA until 17:00 UTC, then AM signal ontop:
Brendan1
16-09-2010, 23:20
The morning is still rather poor, but afternoon today was very, very good. :)
FritzWue
17-09-2010, 17:10
For one hour reception is possible here now.
AM interference before 16:00 UTC, and after 17:00 UTC some portuguese AM transmission ontop.
VoR Taldom on 9850 kHz is about 50 (!) dB stronger here!
Brendan1
17-09-2010, 22:50
Fritz - I have AM interference from 1500 to 1600 here as well: China Radio International. It certainly never helps my DRM reception... :(
The morning was quite poor, but the afternoon was better as usual.
FritzWue
18-09-2010, 17:18
Brendan, this transmission is not addressing europe, so from the backside of the antenna it is real dx. Today the propagation conditions were not good, the signal was weaker than the last days, so only fair reception result. After 16:59 UTC a strong AM carrier is on frequency making reception impossible.
Brendan1
18-09-2010, 22:07
Fritz - I am amazed that you get as much of RCI as you do. I don't get all that much of RCI most of the time, and I'm only 4200km away!
REE Cariari in Costa Rica is the closest DRM station to me (3700km), with RCI in second place. After that, Bonaire and Montsinery are next, and then Europe. My best out-of-area DX is RNZI at 11000km, and reception here is very consistent during my evenings and night time (daylight hours it's non-existent).
What is truly hard for me to receive are the South America broadcasts: CVC and HCJB have never been easy or common DX for me.
A bad morning, a great afternoon for RCI today, by the way.
This afternoon's reception report. No audio decoded on the first transmission, and about 28% on the second!
Brendan1
19-09-2010, 22:06
I managed to mess up the morning log, but the afternoon log makes up for that stupidity... ;)
An improvement in reception of both transmissions. There is even a couple of audio blips on the first one!
If it weren't for the strong carrier sitting on the channel, the decoding of RCI would be perfect...
Some more improvement in the second transmission!
Brendan1
20-09-2010, 23:31
Not all that good today for either transmission. Propagation is certainly 'off' from yesterday.
That´s all I could get here in BC today.
Simone
The VOACAP transmitter footprint model for the first RCI 9800 kHz transmission (16 UTC September 2010) shows the limited coverage (attachment 1).
The prediction for the later transmission at 21 UTC is better (attachment 2). Although Brendan's reception tends to be better than forecast and mine seems to be worse!
Wow, but with a carrier slap bang in the middle 40 dB over CRI I had to give up... :eek:
Brendan1
21-09-2010, 23:34
Same as usual here, lousy morning, great afternoon. Propagation has recovered a bit from yesterday.
Yesterday's reception reports.
I noticed that in my VOACAP plots for the RCI 9800 kHz 2nd transmission, that were uploaded, the 30 dBu contour was missing.
In case anyone is interested, I'm attaching a couple of expanded plots one for 21 UTC and the other for 22 UTC that probably provide a more complete picture of the predicted transmitter footprint.
Brendan1
22-09-2010, 23:14
Another poor morning, and today the afternoon wasn't very good either.
This afternoon's reception report.
Brendan1
23-09-2010, 23:11
An extremely poor morning, no decoding. The afternoon was very good, as usual.
FritzWue
24-09-2010, 18:16
Befeore 16:30 UTC and after 17:00 UTC the signal is lost in AM interference:
Brendan1
24-09-2010, 22:02
Well, today I had some brief decoding in the morning, and with the signal level rising towards the end of the broadcast period, it looks like there is some improvement going on.
The afternoon was great as usual.
Some audio decoded at the end of the first transmission, and the second started off promising but the signal took a nose dive half way through.
A weak and unstable signal at the start of my log, conditions improved later, btw now in the US (Adirondack Mountains, New York state, about 200 km South of Montreal).
Simone
Hi Simone,
Welcome to the USA! :)
I am familiar with your location having lived in Ottawa, and Brockville, Ontario, Canada just 100 km north of the Adirondacks (I used to go ski-ing there!).
What intrigues me is that my VOACAP transmitter footprint plot predicted your location as having the strongest RCI 9800kHz signal strength at that time and date!
Although one reception report is subject to random variables, my question is: who is receiving the first RCI transmission well?
Brendan1
25-09-2010, 03:36
What we need are internet receivers that do DRM directly at the site and can stream the audio. None of the ones I've ever seen do DRM, only analog modes. Someone, somewhere might know something different...
Having one right in the northeast, say somewhere in New Jersey or Pennsylvania (away from noise if possible) would be quite interesting to have log broadcasts for the east coast. Real-time feedback available for everyone.
Brendan1
25-09-2010, 22:01
A typical, poor morning; a typical excellent afternoon. :rolleyes:
Hi Zyg,
thanks, there are actually quite a few people from Ottawa down here this weekend.
After looking at your plots I had expected much better results here, best period today was 1630- 1655 UTC, a very weak signal on the second transmission.
@Brendan: There are receivers that can decode DRM and stream RSCI data over the internet, i.e. FhG receivers (rather expensive) but also Dream supports the RSCI protocol, which is much better than only streaming audio.
Simone
Reception slowly improving here.
Simone,
I don't know why the signals are so poor at your location. However, the eastern edge of the plot is about 200 km from your location. It is not much of a distance for the propagation variables to expand (or shrink) the transmitter footprint by that amount.
My plots are forecasts and just like weather forecasts are not accurate everyday!
Brendan1
26-09-2010, 22:03
Some audio spikes in the morning, which makes it a good log. The afternoon was perfect today, with only minor dropouts.
Simone - Interesting information, I did not know that.
A marked improvement in both transmissions! :)
...
Simone - Interesting information, I did not know that.
Hi Brendan,
when I am back home, we can do a demonstration, will send you the details some time next week.
Simone
Brendan1
27-09-2010, 02:03
Thanks Simone, that will be quite interesting to hear and see.
This afternoon's reception report.
Brendan1
27-09-2010, 22:59
The morning looks to be showing some improvement, although it appears to be painfully slow in getting better. The afternoon was almost perfect today.
A little worse than yesterday.
Brendan1
28-09-2010, 23:29
The morning was about the same, while the afternoon was extremely good.
I tried the afternoon transmission, but only a weak and unstable signal here near Montreal, Quebec, Canada, not worth posting results.
Simone
Brendan1
29-09-2010, 02:10
Simone - I am seeing very incremental changes here, as the days grow shorter. The morning hours show a slowly increasing signal strength, with bursts of decoding as the ionosphere comes and goes. The afternoon quickly (just a few weeks really) went from nothing to nearly perfect here. As I recall, last winter I had nearly perfect reception both morning and afternoon.
mitajohn
29-09-2010, 06:22
Hi all,
Weak signal at start-up then much better until QRM started.
I tried the afternoon transmission, but only a weak and unstable signal here near Montreal, Quebec, Canada, not worth posting results.
Simone
It seems that the signal was received everywhere but the target zone!
The second transmission was a little better.
Brendan1
29-09-2010, 23:08
The morning was not any better today, and the afternoon saw a decline from yesterday as well.
Conditions not as good as yesterday. Reception started to improve at the end.
Brendan1
30-09-2010, 23:16
The morning was a disaster, but the afternoon wasn't all that bad.
The first quarter of an hour was free from co-channel QRM. When the interferer rises >20 dB above RCI, it all starts falling to bits. The CDA was 90%. The log is 16 minutes long.
Brendan1
01-10-2010, 22:03
Typical poor morning, typical great afternoon. :rolleyes:
Best reception report, for the 2nd transmission, in a long time. :)
Brendan1
02-10-2010, 22:01
Much the same as it has been for weeks: not-so-good morning, great afternoon.
Had to move and lower the receive antenna to be just above the ground. The 2nd log reflects this.
I hope to have a better antenna up in the next few days.
Brendan1
03-10-2010, 22:01
Lightning this afternoon contributed a lot of the dropouts. Not much change otherwise.
Not sure if it's my new long wire receive antenna or whether it's good propagation, but this is the best first broadcast from RCI that I can remember.
99.71% audio received in the four hour transmission. EXCELLENT! :D
Brendan1
04-10-2010, 23:15
Nice work Zyg! I'd say it's the new antenna, and I'm jealous.
The morning was only slightly better here, and the afternoon now conflicts with Disco Palace/TDP, so no afternoon log here.
Brendan1
05-10-2010, 23:41
The morning shows definite signs of improvement today, even a solid block of about 15 minutes worth of decoding.
Today's reception report.
Thank you, Brendan! I made some final adjustments to the antenna this morning.
There was a disconnected wire at the antenna balun that caused the initial 14 minute receive signal loss. :o
Brendan1
06-10-2010, 19:34
Today did not have the long(er) period of decoding yesterday did, but it still looks like things are improving overall.
Today's first transmission reception report. 99.76% audio for four hours! :)
The reception report for the first transmission (15:05 - 19:05) is divided into two logs. Continuing excellent!
Brendan1
07-10-2010, 23:00
Somewhat better, although I would like to have a higher SNR!
Brendan1
08-10-2010, 20:42
Not so good today, just a few bursts of decoding.
Excellent reception this afternoon! :)
Another excellent reception log - 99.72% audio for 4 hours! :)
Continuing excellent reception - 99.74% audio! :)
Excellent reception - 99.80% audio - even though the solar terestrial K index reached 5 (minor geomagnetic storm).
Excellent. High (for the RX-230D) SNR average 21.77dB and 99.83% audio! :)
Excellent reception again - 99.86% audio! :)
Another excellent reception log - 99.72% audio.
Brendan1
15-10-2010, 01:07
Not nearly as good here. Only the smallest amount of decoding today.
Brendan1
15-10-2010, 22:22
I'd say this shows some improvement certainly. ;)
Another excellent afternoon - 99.78% audio. :)
Brendan1
16-10-2010, 22:17
Less decoding than yesterday. :(
Looks like an excellent steady pattern every afternoon - 99.74% audio. :)
Brendan1
17-10-2010, 19:05
Still poor here, less than 2% CDA today.
Yesterday's excellent reception log - 99.8% audio over the four hour transmission! :)
Brendan1
18-10-2010, 19:30
Not very good at all today, not at all. :(
I think this is my best reception report for the four hour transmission - 99.92% audio! :)
Brendan1
19-10-2010, 23:18
Not so good here. Used the Datong AD370 on it yesterday and today, very poor results for RCI here.
Not to mention my PC crashed at 1852. :eek: I did manage to get it reset at lunch time (1925).
Still excellent reception - 99.82% audio. :)
Brendan1
20-10-2010, 23:44
The power failed just two hours into the broadcast. The cat shut off the UPS by stepping on the button. I have stopped it from happening again. :o
Not bad reception, at least there was RF showing for the entire period. Not much decoding however.
Another excellent reception report - 99.92% audio! :)
Interesting that the doppler peak at approximately 16:00 also shows up at about the same time on Brendan's log.
This afternoon's reception report - 99.32% audio.
There was a signal anomaly at 18:04. Not sure if it was transmitter or propagation related. The log plot is zoomed in at that time (attachment 2).
Brendan1
22-10-2010, 03:04
I don't seem to have any sort of variation around 1804, but then the RF was very up and down the graph today. Not much decoding here.
FritzWue
22-10-2010, 18:14
I don't seem to have any sort of variation around 1804, but then the RF was very up and down the graph today. Not much decoding here.
@Brendan1
Interesting, this transmission is for NA,
but here in EU we seem to get a little bit more than in AZ. :)
Signal is strong here on my 2x 40m 90° V-dipole pointing northwest.
Decoding is only depending on AM interference.
Brendan1
22-10-2010, 22:06
Fritz, I tend to think that Sackville has some rather large and powerful back lobes on their antenna system - how else to explain it? :(
I am more than a few degrees off the beam here, and typically this is not an easy time of year to receive Sackville's DRM out west. Winter is a much better season for that.
Another excellent afternoon - 99.87% audio. :)
Brendan1
23-10-2010, 22:58
It may only be 15% CDA today, but this is a definite improvement for my QTH.
Another excellent afternoon - 99.90% audio.
The SNR plot has a series of blips on it - have no idea what is causing that. :confused:
Brendan1
24-10-2010, 20:25
Things are getting better! The CDA was 27% today, which is the best here for many weeks.
Yesterday afternoon's excellent reception - 99.78%. :)
Today's excellent reception report - 99.67% audio. :)
Brendan1
25-10-2010, 23:11
While nowhere nearly as good as Zyg's log, I am seeing improvement and signs of a slow change in overall reception. A few more weeks and my reception should be nearly as good as his currently is, which I have found is very typical for locations on the west coast/western US.
Brendan1
26-10-2010, 19:31
The CDA was 46% today, so it's still improving. :)
Another excellent reception report - 99.77% audio! :)
Continuing excellent - 99.31% audio. :)
Brendan1
27-10-2010, 23:33
Down slightly from yesterday, but I still think it's good! 33% CDA.
Excellent - 99.76% audio! :)
Brendan1
28-10-2010, 23:35
Reception was off compared to the previous two days, just under 6% CDA.
Another excellent afternoon - 99.84% audio. Logging started 5 min late.
Brendan1
29-10-2010, 23:23
Dream crashed while I was away at breakfast (I'm off on Friday's! :) ) so this log is in two parts with a gap in the middle.
Reception was not too good, however.
Brendan1
30-10-2010, 19:07
Well, the CDA was 22% today, which, while low, is better than the last two days.
Another excellent reception afternoon - 99.87% audio! :)
Brendan1
31-10-2010, 19:12
The CDA is back up to 37% today, and that's an improvement. CBC did not go until 2005 as the new schedule indicates, instead they stopped an hour earlier, at the "old" time.
The first transmission excellent - 99.88% audio! :)
The second 94.27% audio.
Brendan,
RCI are on their "transitional" schedule and will commence the new one on November 7.
Brendan1
01-11-2010, 18:40
Zyg - thanks for that. It's funny they've chosen to do that because they are now starting an hour later, per the new schedule, so why not keep the last hour going? Of course, we're a little weird here in Arizona, where there is no Daylight Savings time except on the Navajo Reservation up north.
Reached 60% CDA today, which is the best in months! :)
Forgot that RCI now has an afternoon broadcast that no longer conflicts with TDP/DP. Above 99% for this one, which is really nice!
Both transmission's excellent - 99.94% and 99.73% audio! :)
Brendan1
02-11-2010, 22:34
Wow, things are certainly improving here! Even the morning session was over 93% CDA today, and the afternoon was just below perfect. I like it!
No complaints for the two reception reports - 99.47% and 97.30% audio. :)
Excellent results again for both transmissions - 99.88% and 99.37% audio! :)
Brendan1
03-11-2010, 22:53
Well, the morning suffered here today, but the afternoon was near perfect. I'm not going to complain... :cool:
Brendan1
04-11-2010, 22:32
Very good conditions today, both sessions were over 95%! :)
Excellent results continue for both transmissions - 99.89% and 96.54% audio! :)
Brendan1
05-11-2010, 22:06
This mornings' session wasn't bad, but there is still room for improvement, including the rather abrupt and large off-air period in the middle. The afternoon had the first 12 minutes as dead air, and after that it was excellent.
Looks like someone is having some TX problems. :(
Today's reception logs mirror the transmission breaks that Brendan mentioned.
Brendan1
06-11-2010, 22:06
OOF! Looks like an R2 blackout hit this morning. Thank goodness it had dissipated by the afternoon. :eek:
Software problems prevented logging the first transmission. The 2nd was excellent at 99.39% audio.
This afternoon's two transmissions - 99.69% and 94.66% audio.
Brendan1
07-11-2010, 22:56
Much better here today, propagation appears to have settled down.
FritzWue
08-11-2010, 19:02
The signal is OK, but there is strong interference +/-5kHz.
I tried to fight that with usb mode and razorsharp filers.
But when RTP international in wideband AM appears on frequency there is no chance to receive anything here. :mad:
Brendan1
08-11-2010, 22:05
Both sessions are above 99% today: the first time it's been this good for months! :D
Yesterday afternoon's two transmissions - 99.63% and 95.39%.
Brendan1
09-11-2010, 22:53
The CDA was again above 99% for both sessions.
Yesterday's excellent reception reports - 99.70% and 99.86% audio! :)
Brendan1
10-11-2010, 22:24
Another fine day: the morning was 99.70%, and the afternoon was 99.83%. :D
This afternoon's reception reports - 99.79% and 99.78% audio.
Brendan1
11-11-2010, 22:04
Some bobbles during both sessions, so less than 100% both times.
Another set of excellent reception reports - 99.83% and 99.78% audio! :)
Brendan1
12-11-2010, 22:20
The morning was over 99%, but the afternoon saw a content server glitch at the beginning, and Sackville had to restart everything a few minutes late: but for that it would have been perfect.
This afternoon's reception - 99.80% and 91.9% audio. Apart from the start anomaly, the doppler was peaking strangely...?
Brendan1
13-11-2010, 22:03
The morning was not as good as it has been lately, but the afternoon was near perfect (58% and 99%).
This afterrnoon's transmission - 99.98% and 97.91% audio. :)
Brendan1
14-11-2010, 22:07
Rather mixed results today, with the morning not great but the afternoon nearly perfect. :rolleyes:
Yesterday afternoon's logs - 99.83% and 98.78% audio.
This afternoon's reception 92.49% and 94.70% audio, including an apparent transmission break of about 20 minutes during the first broadcast.
Brendan1
15-11-2010, 23:30
The morning was not great at 84.9% (transmitter outage included), but the afternoon was near perfect: 99.86% then.
This afternoon's reception - 99.60% and 98.52% audio.
Brendan1
16-11-2010, 23:17
A very good day today: 98% for the morning, and 98.99% for the afternoon. The larger dips after 2240 may in fact have been caused by my trying to use my now-elderly single core Pentium 4 to do too many things at once. :o
A short log when testing my RF-B60 this afternoon.
Brendan1
17-11-2010, 22:32
The morning was 97%, and the afternoon was 99%, so I would say it was a good day! :)
Yesterday afternoon's reception - 99.24% and 96.22% audio.
There were a couple of unexplained deep SNR outages with sync loss during the first transmission. :confused:
Brendan1
18-11-2010, 22:03
A fairly good morning (81%), and a great afternoon (99%). :)
This afternoon's reception - 99.64% and 95.55% audio.
Brendan1
19-11-2010, 22:04
The morning was quite good at 89%, and the afternoon was also good at 99%. Not going to complain... :D
Yesterday afternoon's reception - 99.87% and 96.90% audio.
Brendan1
20-11-2010, 22:03
A very good day here, both sessions welll over 90%: morning 97%, afternoon 99%. :D
Yesterday afternoon's excellent reception - 99.87% and 99.19% audio.
Brendan1
21-11-2010, 22:32
There more dropouts this morning than usual but it was still 96%. The afternoon was above 99%, and the Doppler was all over the place.
Conditions dropped this afternoon - 98.80% and 86.67% audio.
Brendan1
22-11-2010, 22:03
The morning was 99.88%, and the afternoon was 99.91% today, and it will be very hard to improve on this. :D
Yesterday afternoon's reception - 99.85% and 91.59% audio.
Brendan1
23-11-2010, 22:08
The morning was virtually a carbon copy of yesterday at 99.89%, and the afternoon was very slightly less, at 99.86%.
This afternoon's reception - 99.83% and 90.08% audio.
Brendan1
24-11-2010, 22:32
Both sessions were over 99% today. :D
Yesterday's reception reports - 99.24% and 96.37% audio.
Brendan1
26-11-2010, 00:33
A fairly consistent day with my results once again above 98% for both sessions. Even a transmitter glitch in the last few minutes of the afternoon.
Yesterday's reception reports - 99.67% and 96.42% audio.
Brendan1
26-11-2010, 22:12
Something happened this morning, so I have no morning log. The afternoon was simply excellent: above 99%.
Yesterday's reception reports - 99.46% and 95.92% audio.
Brendan1
27-11-2010, 22:55
Good conditions today, the morning was 99.82% and the afternoon was 99.83%.
Yesterday's reception, conditions not as good - 98.52% and 98.33% audio.
Brendan1
28-11-2010, 22:03
Another good day today: morning 99.85%, afternoon 99.66%.
Yesterday's reception - 99.45% and 99.17% audio. The doppler was the culprit in the first transmission and the delay in the second.
FritzWue
29-11-2010, 18:12
CVC comes through quite well, but at 19:00 UTC RRI starts in DRM on 9805 kHz and blocks CVC.
Two DRM signals overlapping by 5 kHz, very bad frequency choice at RRI! :mad:
Brendan1
29-11-2010, 22:35
Only some fairly minor dropouts kept the morning session from being perfect. The afternoon saw what looks like content server failure, and the audio dropped out after only 8 minutes. :mad:
First transmission - 99.27% audio. The second transmission lost audio as Brendan mentioned.
Brendan1
30-11-2010, 23:38
Another good day for reception: the morning was 97.43% with a long audio dropout between 1816 and 1831, while the afternoon was 99.64%.
Yesterday's second transmission reception - 98.90% audio.
I had disconnected the receiver earlier due to severe storms in the area, hence no log for the first broadcast.
FritzWue
01-12-2010, 18:17
Not good tonight, RRI on 9805 kHz finally flattened the signal:
Brendan1
01-12-2010, 22:54
Some dropouts in both sessions today: am was 94.53%, pm was 99.55%.
Yesterday's reception - 99.86% and 92.57% audio.
Brendan1
02-12-2010, 22:03
Only 66.38% for the morning, but 99.94% for the afternoon.
Yesterday's reception - 99.71% and 99.27% audio.
Not good tonight, RRI on 9805 kHz finally flattened the signal:
Fritz,
Here is the spectrum plot of RCI's 9800 kHz signal together with that of RRI at 9805 kHz received at my location.
FritzWue
03-12-2010, 17:20
Zyg,
I think that is very bad coordination.
There are only a few DRM stations on air and then even interference between two of them.
Today I had 1.5 hour time window to receive CBC on 9800 kHz.
In between someone tested in AM 5 kHz down for some minutes,
but that obviously was not RDP Portugal who started with a 20 kHz wide AM signal at 18:00 UTC.
Brendan1
03-12-2010, 22:59
Quite good again today, the morning was 95.29%, and the afternoon was 99.81%. The dip in the SNR at 1635 was self-inflicted: I was attempting to debug an audio issue... :o
Brendan1
03-12-2010, 23:03
Just to further highlight our differences: I do not have any problems with RRI here, but then I am also 2400km further west than Zyg's QTH. No traces at all here of RRI during the time they are on air.
Yesterday's reception - 99.90% and 83.67% audio.
Peculiar propagation during the 2nd transmission. At about 22:24 the delay got so high as to knock out the audio! :confused:
Brendan1
04-12-2010, 22:15
Zyg - regarding that spike in the delay that killed your reception, I noticed that I have the same peak, although at a lower strength. Interesting indeed.
Today was fairly good: the morning was 98.95% with a lot of those little, short dropouts, while the afternoon was 99.94% with only one dropout of any real size.
Yesterday's reception - 99.91% and 93.63% audio.
The same propagation anomaly, as the day previous, occurred at 22:20. My local sunset was 22:27. :confused:
Brendan1
05-12-2010, 22:31
Another good day here, with 95.43% for the morning, and 99.05% for the afternoon.
This afternoon's reception report - 99.88% and 38.45% audio.
The 2nd transmission audio disappeared starting at 22:22. This does correlate with the local sunset and the accompanying terminator grey (or gray) path.
My second log this afternoon (please see last post) shows the audio disappearing at 22:22 and then all the other plots, SNR doppler etc., vanish at 22:28. This happens to coincide with the terminator grey line reaching my receive location (please see attachment - made using DX Atlas). Coincidence? :confused:
The other interesting aspect is that this is about as far as the terminator (and accompanying grey line) reaches at that particular time for the year. In the days ahead it will pull back at that time even though the shortest day of the year is still two weeks away!
It's all to do with the sun and earth! ;)
Brendan1
06-12-2010, 22:13
A truly excellent day here: 99.65% morning, 99.91% afternoon. :D
This afternoon's reception reports - 99.81% and 74.58% audio.
The 2nd transmission starting to totally lose audio decoding at about 22:44, with the delay almost going off the line at 10 mS and the doppler going crazy too! :eek:
Brendan1
07-12-2010, 22:05
Some small hits again today during both sessions. AM: 99.82%, PM 99.86%.
This afternoon's reception reports - 99.85% and 98.18% audio.
Looks like the propagation has settled down! :)
This afternoon's reception reports - 99.04% and 98.82% audio.
On the 2nd transmission the high doppler peak continues at 22:20...
Brendan1
08-12-2010, 22:58
Just another near-perfect day here: 99.93% morning, 99.70 afternoon. :D
Interesting: about 18 minutes after peaking on Zyg's chart, I have a Doppler crest as well. Hmmmm..... :confused:
Brendan1
09-12-2010, 22:33
The morning was near perfect at 99.84%, but the afternoon suffered a dropping SNR and rising Doppler for the last 15 minutes: 77.38%. This is the first time in some weeks that there have been any propagation issues during the afternoon here.
This afternoon's reception reports - 99.82% and 60.98% audio.
The second transmission suffered the same fate that Brendan witnessed, except it started earlier here.
FritzWue
10-12-2010, 17:21
About 1.5h time window for reception here.
Interesting program about the relationship between canadians and u.s. americans.
"This question comes close to the bone, but we are similar" :D
Around 19:00 UTC RDP starts on 9795 kHz with 20 kHz wide AM.
No DRM reception possible then.
Brendan1
10-12-2010, 22:08
Fritz - at times in the past I was mistaken for being Canadian, mostly due to my voice/accent. I grew up near the Canadian border (about 25km away) and at the time of my now distant youth I would have sounded just like someone on the other side of the line. That also means that if I have to, I can be a fake Canadian very easily... :p Seriously though, I like Canada and the Canadians!
Had a more than a few dropouts this morning, leaving the CDA at 96.74%. The afternoon was much better: 99.86%.
This afternoon's reception - 99.82% and 99.33% audio.
With analog Korean KBS showing up at the edge at 9805 kHz on the 2nd transmission.
Very interesting discussion on "Canadian inferiority complex re -US".
Fritz and Brendan - I lived in Canada (Ontario) for 16 years...
Yesterday's reception reports - 91.77% and 90.62% audio.
Brendan1
12-12-2010, 16:55
A very good day yesterday: 99.71% for the morning, and then 99.87% in the afternoon. Looks like I'm having some of the same problems after 1900 that Zyg is. Is there some QRM starting at 1900?
FritzWue
12-12-2010, 18:50
@Brendan&Zyg:
I've been to B.C. and Alberta twice, beautiful land there, like it very much! :)
Today again some periods of good listening, but also some interference.
The best thing: RCI overrides RRI on 9805 kHz with it's german DRM transmission! :D
RRI should really leave this frequency, RCI was there for years!
When RDP starts in AM on 9795 kHz everything is flat! :(
Yesterday afternoon's reception reports - 99.94% and 96.07% audio.
Looks like I'm having some of the same problems after 1900 that Zyg is. Is there some QRM starting at 1900?
Brendan, I was observing the end of the first transmission and the interference is definitely RRI 9805 kHz (although this time it just reduced the SNR and did not affect the audio decode). RRI closes its transmission at about 5 mins before the hour, and I saw how the RCI SNR immediately improved by 2 or 3 dB after that happened!
Please see post 2182 for the spectrum plot.
Brendan1
13-12-2010, 13:11
Boy, redoing my hard drive has really thrown me off course: yesterday's results were as follows - 99.52% morning, 99.86% afternoon.
The morning is two hours short, as my PC work wasn't yet over when CBC began.
Zyg - Thanks for the info on RRI on 9805. Normally mid-day is not a good time for me to have EU origin interference, especially on the lower frequencies.
FritzWue
13-12-2010, 20:28
Lippstadt-Beckum-Ahlen in a snowstorm
Brendan1
13-12-2010, 21:59
Excellent results today: 99.85% in the morning, and 99.76% for the afternoon.
Yesterday afternoon's reception reports - 99.84% and 96.94%% audio.
Brendan1
14-12-2010, 22:33
Odd, there was less than an hour of the morning session: from 1913 to 1959 I had a CDA of 99.75%. The afternoon saw a CDA of 99.86%.
I had no trace of signal showing until 1912, not a single little spike. :confused:
Yesterday afternoon's reception reports - 19.96% and 98.01% audio. The first transmission results reflecting the long delay in starting.
Brendan1
15-12-2010, 22:04
It looks like propagation was somewhat 'soft' this morning, but my CDA is still rather good: 91.95%. The afternoon was much better, and I had 99.96%.
Yesterday afternoon's reception reports - 99.75% and 98.49% audio. The last hour of the first transmission being affected by the 9805 kHz DRM signal from RRI.
Brendan1
16-12-2010, 22:05
Another difficult morning, worse even, with a CDA of 64.72%. The afternoon, at 99.86%, was much better.
Yesterday afternoon's reception reports - 99.43% and 90..75% audio.
The first log also shows the RRI interference (QRM) during the last hour.
FritzWue
17-12-2010, 19:36
Mixed reception result here today:
Brendan1
17-12-2010, 22:36
A short log for the morning session, caused by my PC freezing up: 99.79%. The afternoon was much better, with 99.89%, and considerably less fading.
A note on the 9805 QRM: I could see no interference here from RRI on 9805 after 1900. I am probably too far west for anything to show here.
Yesterday afternoon's reception reports - 99.83% and 98.84% audio.
Brendan1
18-12-2010, 22:34
The "flutters" have certainly stayed on during the morning: 76.18%, and the afternoon was 99.82%. The morning log is a little short as I slept in with a very bad cold.
Yesterday afternoon's reception reports - 99.84% and 99.15% audio.
Yesterday afternoon's reception reports - 99.82% and 87.29% audio.
Brendan1
20-12-2010, 14:15
The morning was again fairly 'disturbed' but the CDA was good in spite of that: 73.65%. The afternoon saw the first propagation issues in a long time: 80.33%.
Brendan1
20-12-2010, 22:34
Improved propagation today, for both sessions: the morning was 96.79%, and the afternoon was 99.81%.
Yesterday afternoon's reception reports - 99.84% and 96.46% audio.
Brendan1
21-12-2010, 22:37
Today's results: the morning was very poor, only 60.87%, and the afternoon was 78.70%, which is also poor. Propagation has certainly tanked in the last few days here.
Yesterday afternoon's reception reports - 98.62% and 73.38% audio. Strange propagation, the second transmission signal disappeared at the same time 2246 that Brendan's reception tanked! :eek:
Brendan1
23-12-2010, 14:04
A much better day yesterday: the morning was 89.99%, and the afternoon was 99.96%.
Brendan1
23-12-2010, 22:44
Not as good this morning: 84.51%. The afternoon was very good: 99.25%.
Yesterday afternoon's reception reports - 99.86% and 72.46% audio.
Brendan1
25-12-2010, 00:46
Today's logs: AM - 77.08%, PM - 95.21%. There was some band fading for the last of the afternoon log, no QRM, just weakness in propagation.
Merry Christmas, Fröliche Weihnachten, Feliz Navidad!
Yesterday afternoon's reception reports - 99.84% and 77.14% audio.
Merry Christmas!
Brendan1
25-12-2010, 22:32
A very nice morning log: 99.86%. The afternoon was nearly as good: 99.17%.
A Merry Christmas and Joyeux Noel to Canada!
Yesterday afternoon's reception reports - 99.83% and 96.61% audio.
Brendan1
26-12-2010, 22:33
A very nice morning at 98.16%, and the afternoon is short due to a PC problem, so it's only 15 minutes long: 98.59%.
Yesterday afternoon's reception reports - 99.88% and 99.59% audio.
For first transmission logging started 8 minutes late due to operator tardiness. :o
Brendan1
28-12-2010, 01:10
The morning began late, there was a substantial fade, and a couple of transmitter dropouts added to the mix: 79.82%. Of course, there was a blizzard in that part of the world... :rolleyes:
The afternoon was a different ballgame: 99.89%.
Yesterday afternoon's reception reports - 94.15% and 85.33% audio.
There appeared to be a transmitter problem at the beginning causing a delay, and then interference from RRI caused some signal degradation at the end.
Brendan1
28-12-2010, 22:46
No transmitter problems at all today: the morning was 99.91%, and the afternoon was 99.94%. A really, really good day in other words! :D
This afternoon's reception reports - 99.47% and 99.85% audio.
The second transmission was significantly better!
Brendan1
29-12-2010, 22:41
The roller coast returned this morning: only 79.03%. The afternoon was much more solid: 99.89%.
Yesterday afternoon's reception reports - 99.87% and 97.46% audio.
Brendan1
30-12-2010, 23:37
The roller coaster got even more spectacular today: only 20.20% for the morning. The afternoon was, again, much better: 99.86%.
Yesterday afternoon's reception reports - 99.85% and 95.70% audio.
Brendan1
31-12-2010, 22:36
The roller coaster was much diminished today: 98.98% for the morning. The afternoon was somewhat truncated, although still quite good: 97.51%.
The strangely symmetrical dip was caused by my PC having some mysterious freezing issue. I cut the log short, ran an anti-malware program and removed 9 little buggers that may have been responsible for the slowdown (which was not the first time this has happened recently). It wasn't happening a lot, but it was occurring, which was not a good thing. I'll see how things go on from here. ;)
A Happy New Year to all!
Yesterday afternoon's reception reports - 99.87% and 97.70% audio.
Brendan1
01-01-2011, 22:33
The morning was extremely good: 99.91%. The afternoon is longer, as I logged Vatican Radio starting at 2045, and kept it on frequency until RCI was done at 2300. Note that VR had a frozen content server at the beginning, and from 2130 to 2200 there is no transmission. Not bad though: 74.12%.
Yesterday afternoon's reception reports - 99.82% and 99.80% audio.
Brendan1
02-01-2011, 22:32
Excellent reception again today: the morning was 99.58%, and the afternoon was 77.58%. If you take out the 30 minutes of no programming, the afternoon would probably be in the high 90 percentile range. :D
Yesterday afternoon's reception reports - 99.86% and 97.28% audio.
vBulletin v3.5.3, Copyright ©2000-2012, Jelsoft Enterprises Ltd.