First 10m WSPR spot from the USA today

N1NCO (5283km) was the first USA station to spot my 10m 500mW WSPR beacon at 1236z. There have been plenty of spots by USA stations since that time.

More EU spots of my 10m 500mW beacon

LZ1UBO (2039km) and UR/SWL56 (2283km) have been spotting me this morning. I think LZ1UBO is a new station reporting me who has not been in the log before. I think propagation is F2 judging by the distances.

More on the Minima transceiver

My mention of this Ashaar Farhen design yesterday seems to have been very popular, so I have dug out a bit more information. As it stands it produces 1W pep but it is easy to add a further PA.

See http://www.sarfata.org/ham/minima/ .

Although a kit of parts is available, I am not aware of a full kit with enclosure and a PCB being available as is the case with the BitX from Hendricks Kits.

Daytime 472kHz WSPR 5mW ERP and earth-electrode "antenna"

Nothing exceptional overnight.

This morning, I see I am being spotted by G4JVF (151km), M0ELS (81km) and G8HUH (250km).   I am spotting PA0O (440km) and PA3ABK/2 (306km). All not bad for full daylight propagation.

Sunspots up today

Sunspot number is climbing again and stands at 78 today (was 49 yesterday). 10m propagation is again expected to be "fair".  So far just local G4IKZ (18km) and LZ1OI (2153km) copying my 500mW 10m WSPR beacon but it is still very early.

The Minima transceiver

See http://www.phonestack.com/farhan/minima.html

This is the latest project from Ashaar Farhan. Component cost is said to be less than $100. This is based around a Si570 sythesiser and a programmed Arduino micro-controller IC. It looks a simple to duplicate rig covering up to 30MHz. It is the successor to the BITX rig I think. The IF is 20MHz. If you only want 0-15MHz or 15-30MHz (i.e. not both) the rig get even simpler.

Crystal alternative?

Buying crystals for specific frequencies is now getting very expensive. There may be a newer alternative.

See https://aa7ee.wordpress.com/2015/01/12/a-crowdfunded-si5351-breakout-board-from-jason-nt7s/ .

This synthesised solution allows any frequency from 8kHz to 160MHz to be generated.

Solar activity

See http://www.solen.info/solar/.

It is easy to overlook the peaks and troughs of solar activity when looking at averages. When solar activity has brief peaks, conditions can often be way above average. Some have even caught brief 6m F2 openings by remaining alert.

That is why 10m is such a fascinating band . Even in years with almost zero or no sunspots I have worked South Americans with QRP SSB with simple wire antennas. Never give up just because the average sunspot number is low.

10m USA today?

It is now 1240z and there are no spots of my 500mW 10m beacon from the USA yet.  I see that the band is open between the USA and Germany so maybe I am being impatient. However, with much lower sunspot numbers it is possible I'll not be heard in  the USA on 10m today at all with my low power beacon.

UPDATE 1330z:   I spoke too soon!  WA2PJI (5550km) spotted me first at 1242z and there have been others since.

UPDATE 1752z:   At the moment KC1AWS (5308km) is the last USA station to have spotted my 500mW WSPR beacon on 10m at 1750z. This could change. 

UPDATE 1835z:   KC1AWS does appear to be the last USA station to spot me at 1750z. Since then, just local G4IKZ (18km).

Sunspot number and 10m

At just 49, the sunspot number is lower than for some time.   10m propagation is only expected to be "fair".