Argentina 820

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simbeav
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Argentina 820

Post by simbeav » 19 Jul 2018 11:52

There have been some nights over the last few weeks with reasonable South American signals coming through (NA has picked up a bit as well some nights).
As usual, for me it is tantalising rather than interesting as I can never pull out an ID. Lots of stations on frequencies and offsets I haven't ID'd on , but not able to confirm what it is.

Last night there was a good ID for Radio Nacional Argentina at 04:02, "Nacional, La Radio de Todas" . One, that should be quite easy to catch, but I haven't got an ID before, so it keeps the logbook ticking over.

Simon

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KnobTwiddler
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Re: Argentina 820

Post by KnobTwiddler » 19 Jul 2018 13:02

I wish that I could still do MW dxing, but the noise floor here in London now makes it almost impossible except for the some of the stronger NA station during the winter months.

I don't know if it's possible to receive Digital MW signals from NA, but this looks like this will become the norm in a few years >> https://news.radio-online.com/cgi-bin/r ... _id=n35675
AirSpy HF+ SDR + Full-wave Loop for FM + Home-brew Mini Whip for LW/MW/HF or 9:1 Balun + Whip Aerial
Yamaha T-D500 Tuner For DAB - Alinco DX-R8 Comms Rx - Tecsun PL-880 & ICR-110
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simbeav
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Re: Argentina 820

Post by simbeav » 19 Jul 2018 22:17

When I came back to MW dxing after many years, I was astonished by the amount of noise pollution and my old homemade loop was next to useless. I use a Wellbrook now and although I can not rival those with beverages, flags and pennants, it certainly did cut down on the the noise.

Every now and then something in the neighbourhood pops up and makes me think that the game is up, but luckily it has always quietened down after a while up to now (or I have just got used to it).

I'm sure there was somebody dxing MW in London recently (stuart ?).

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KnobTwiddler
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Re: Argentina 820

Post by KnobTwiddler » 20 Jul 2018 02:27

simbeav wrote:
19 Jul 2018 22:17
When I came back to MW dxing after many years, I was astonished by the amount of noise pollution and my old homemade loop was next to useless.
Same here, I made one of the classic 40" square loops back in the 70's, but with the noise level that I have these days from PLA devices and the inverter on my neighbours solar panels, I would be lucky to hear 5 Live on 909 kHz without interference and it's just a few miles north of me at Brookmans Park.

I loved the old MW loop and I remember in the mid 70's some very weird conditions once at about 5am. I was tuning around and there appeared to be very little propagation from NA stations. I was about to switch off the old CR100 and HRO and go to bed, but I thought that I would do one more band-scan and all I got was a few weak heterodyne's on the 10k channels. As I was tuning around the bottom of the band between 600 - 700 kHz there was just one station that was coming up out of the static. I can't recall the station call or the frequency but it was a Canadian station going by the call letters and it came up to an amazing strength, in fact it was the strongest signal that I have ever heard from a Canadian station.

I looked up the call letters in the WRTH and I was amazed as the station was located near the West coast of Canada not far from Vancouver Island. The signal was enormous and lasted for about 10 minutes and then it started to fade in QSB and disappeared back into the noise.

To this day I don't know what type of propagation this was, the only other station that I could hear that morning was CJON on 930 kHz in St Johns Newfoundland. This was always the station to check for NA propagation, but even that was weaker than normal and that is on the East coast.

My only theory is that maybe this was some strange polar propagation over the North Pole that may have been enhanced by the Aurora Borealis... Unfortunately I will probably never know the answer as to what type of propagation this was. :(
AirSpy HF+ SDR + Full-wave Loop for FM + Home-brew Mini Whip for LW/MW/HF or 9:1 Balun + Whip Aerial
Yamaha T-D500 Tuner For DAB - Alinco DX-R8 Comms Rx - Tecsun PL-880 & ICR-110
Yaesu FT-897D - Icom IC-2200H - Anytone AT-588 for 70Mhz

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John Faulkner, Skegness
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Re: Argentina 820

Post by John Faulkner, Skegness » 20 Jul 2018 18:49

By some bizarre fluke (which can't last, because it just CAN'T!) I have a very quiet band at the moment. It's not exactly super-clean band but I ave a 100% copy of 1520 WWKB which I am listening to now. It wasn't alone on the frequency either. This was virtually booming in between 0100 and 0400.

Still no major noise bands noticed. Figners ar esxtrmemly tihgtly corsssed, sas yuo mightt be abnble to trell.

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John Faulkner, Skegness
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Re: Argentina 820

Post by John Faulkner, Skegness » 20 Jul 2018 20:55

Checking 820, I hear a Spanish male talker from 0100. It sounds like some kind of very laid-back commentary. A lot of gaps in the speech. I don't think I've ever been able to dig in on 820 like this before. What has gone off 819? Was it just that Egypt was not favoured by the conditions?

Reception was better using the 8 kHz AM filter too!

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John Faulkner, Skegness
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Re: Argentina 820

Post by John Faulkner, Skegness » 20 Jul 2018 22:42

Yep. I spoke too soon. Noise now across MW. It's different to any I have seen so far.

satnipper
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Re: Argentina 820

Post by satnipper » 21 Jul 2018 10:02

Yes - I dx'd MF in NW London for many years using a Flag antenna reasonably successfully. Quite lucky I think in that I never had any game stopping noise. Now moved from London to England.

Stuart

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John Faulkner, Skegness
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Re: Argentina 820

Post by John Faulkner, Skegness » 21 Jul 2018 10:04

satnipper wrote:
21 Jul 2018 10:02
Now moved from London to England.

Stuart
:lol:

simbeav
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Re: Argentina 820

Post by simbeav » 21 Jul 2018 10:25

Conditions not so good here the last couple of days - Only the usual Canadians really coming in at any strength.

John, the only stations that I have received on 819 since Euzkadi closed have been Egypt and a French station which I think is the "Luxembourg affect" or similar. Probably splatter from Egypt is the usual QRM on 820

tvdxrools
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Re: Argentina 820

Post by tvdxrools » 21 Jul 2018 11:07

finally got the two beverages back up and just a few tweaks to do so hopefully reports soon , David

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