Posts Tagged ‘Propagation’

Am I dreaming?

Posted 28 Oct 2009 — by Alex
Category Radio

Or is the sun getting its hat on?

 

Whisper

Posted 22 Jul 2009 — by Alex
Category Radio

WSPR = Whisper

Joe Taylor and people like him never cease to amaze me. Without trying to state the obvious he really is a clever bloke. I’ve used WSJT a few times, mostly for receiving but on a couple of occasions I’ve done a small amount of transmitting. I’d seen WSPR on his website and if the truth be told I had too much on my plate to think about using it. Now I’ve got some semblance of normality back and the sporadic E season starts to wane. I was thinking of my long ‘un’established sdr beacon receiver then the idea struck me. 

WSPR + Softrock HF Lite + Atom motherboard = WSPR receiver

Why change from Faros. We’ll its no change for the long term but I’ve still not been able to find a way to use the HF lite with Faros for all the IARU HF beacons. Something that it really frustrating. If only I had the ability to write software!

So the possible change in direction needs a bit of thought. Is it worth while? I’m running it for a few days to see what it gives me. Sounds like the project could be something big if enough get involved.

Spots

Posted 20 Jul 2009 — by Alex
Category Radio

Have there been some sunspots or something?

All of a sudden over the last few days the Faros station has started reporting some signals. After being quiet for a number of weeks with little spotting going on something has happened to spurn it into action, Good news anyway. I might have to get the HF vertical out this evening and put the 6m Yagi to bed until next season.

Smoothed Sun Spot Numbers

Posted 22 Apr 2009 — by Alex
Category Radio

W1AW reports through the regular bulletins that the sun spot numbers have changed a bit over the last few months to give an extended low. Something that is all too familiar if you try and listen out for DX at the moment.

Below is a graph of the smoothed numbers that are taken from the recent published numbers. I’ve added a polynomial trend line to show what the smoothed smoothed sun spot numbers look like.

Smoothe Sun Spot Numbers - April 2009

SSN’s still very low

Posted 07 Oct 2008 — by Alex
Category Radio

The suns having a lazy autumn. or spring depending on you hemisphere. The numbers through on the ARRL propagation bulletin make for a fairly low reading with what is reported to be a a bit of a pattern where a sunspot appears for a few days then is quick to disappear. The chart below shows the decline and makes for interesting reading / viewing. As expected there are a number of theories but as yet I’m not sure what it tells us.