Kjell, SM7GVF (ex SM4GVF)

Propagation openings worked from JO77GA.
All maps, unless otherwise noted, show my own QSOs.
You also find some sound files, either recorded by myself or received from others.
QTH is at 200 masl, antenna is at 23 magl.



2016-12-28-30 Tropo
Not so wide spread tropo, but fun any how.

144 MHz. F6DBI longest distance, 1533 km.


432 MHz. G4RRA longest distance, 1390 km.


1296 MHz. F6DKW longest distance, 1234 km.


2016-08-24--25 Tropo on VHF and UHF
The tropo continues on August 26.

144 MHz map of QSO, longest distance worked is YU1EV, 1441 km.
YU1EV was also worked on the morning of August 26.


432 MHz map, again YU1EV is longest.
9A2SB and YU1EV for new DXCC. YU1EV sound.


1296 MHz map, longest distance worked is 9A2SB, 1309 km.
9A2SB and HA2ML for new DXCC.

2016-06-30 Iono on 144 MHz
I worked I3MEK, JN55SJ, at 11:30 UTC with good signals with ionospheric scatter, a distance of 1310 km, on CW, recording here.

2015-12-20 Aurora
This is an update of the fine aurora we had  that day, I worked between 12:39 and 23:52, see the maps below.

144 MHz Aurora contacts.


432 MHz Aurora contacts.



2015-03-17 Aurora
A very good Aurora appeared, the best one in this solar cycle, worked stations on 144 MHz below. Longest distance was RN3QR in LO00BK, 1827 km. I also worked many stations on 432 MHz.


2014-05-13 ES
Es on 2m, I worked RZ6MB in the afternoon.

2013-07-24
ES
I only worked EI3KD on a brief opening.
An IONO/FAI attempt at 1200 Z with G4LOH was made, recoding here. Its spectra looks like this:
         



2013-07-21 Tropo
Warmest day of the year, this far, +28 C.
A tropo opening in the morning. EI3KD was the furthest away with 1570 km on 144 MHz. Mark has a recording here.
On 432 MHZ GD0EMG with 1246 km, and on 1296 MHz GM4CXM over a 1168 km path.
The map shows 144, 432 and 1296 MHz QSOs.

In the afternoon GI4SNA was worked, not on map.


2012-07-15 Best aurora since long!
Already when arriving home at 12:35 the aurora was strong, it lasted till around 19:45, till later south-west of me, it was worked in Italy. First time I experience being north of the aurora!

I worked a new personal and Swedish ODX on 432 MHz, UR5LX, KO70WK 1578 km.

432 MHz aurora above

On 144 MHz, I reached down to JN27, 57, 67 and JN87.


This is the magnetometer of SM4IVE;



2012-07-09  A good aurora.
Worked a new ODX for me, UA4UK.

2012-07-01 First Es on 144 MHz here this year.
I worked a number of UA6, LZ, YO, and 4Z5LY, 3117 km! First SM-4X on 2m terrestrial propagation!
Below is DX-Cluster spots (144 MHz) between 13:30 and 14:30, our QSO was at 14:03. Also worked at 13:56 and heard 15:03.



2012-06-06 Es and vulcanoes
Updated the graph with CT1HZE last Dubus number of Es:es.


2012-06-02 First JA on 50 MHz.
At around 08:30 I worked 30 JA stations on 50 MHz, some with very good signals.


2012-05-26 What about Es this year?
Future will tell, but the number of active volcanoes is lower than what it has been during the last few years. Possibly lower Es activity this year?





2012-03-15 Aurora!



2012-03-09 Aurora!
Aurora down to HA/OK and I worked F6DWG as well, on 2m, see the map below. DL6NAA worked on 432 MHz.




2011-11-10

Tropo, map shows 144 MHz. I was in the middle of popagation, many QSO:s were performed between stations in England and Finland, Estonia.



While sleeping, this is the signal level from OK0EP on 432.886 MHz on 2011-11-11, time is UTC+1.


2011-07-27
Es to Japan on 50 MHz in the morning.

2011-07-13
Es on 2m.

2011-07-06
Es on 2m.

2011-07-01
An Es-opening on 144 MHz. The whole June passed without any opening (here, that I have catched).

2011-06-14 Sporadic E (144 MHz) correlation with Earth Volcano Activity - Follow Up

I wrote an article in DUBUS 3/2010 about my observed correlation between Earth Volcano activity and Mid Latitude Sporadic E on 144 MHz.
The graph below show my findings, updated with data through 2010.
The correlation between DUBUS Es (which is the number of mid latitude 144 MHz sporadic E days that CT1HZE has presented in DUBUS) is such;
- Correlation with Sum VEI is 0.65
- Correlation with Number of volcanoes is 0.54
- Correlation with VEI >=4 is 0.63
for the period 1974 through 2010.

It looks that the volcano activity has decreased since a peak in 2007-2009, so Es activity could decrease this year?



Thanks goes to CT1HZE and DUBUS, and The Smithsonian Institution for making data public, making studies like this possible.





2011-05-26 Es on 144 MHz


Heard EA7AJ (IM87CS) at 14:16, 2531 km
Worked TK5JJ (JN41IN) at 14:35, 1769 km.
Worked CT1HZE (IM57NH) at 16:14, 2791 km. New ODX. Listen here.

10 minute Es data.

2011-05-24 Sporadic E on 144 MHz.
At 16:12 I worked the first Es on 144 MHz this, year, IK5RWP (JN52US, 1598 km), audible for a couple of minutes.


2011-04-09  Sporadic E distances on 50 MHz.
In several papers, it is suggested that long distance Es could be multiple hop Es.
It is hard to evaluate, there are oceans between Europe and USA, and no activity in UA.
It is about 5400 km to Canada from here, and 7800 km to Japan.
Below is a graph over distances worked from here in 2005-2010, distances truncated to 100 km bins.
Multiple QSO:s with the same station occurs in these data. About 300 QSO:s over 4000 km.
The map below shows worked squares, with 2000 km circles.






Aurora 2010-10-11
World wide number of QSOs via Aurora on 1296 MHz:      2

1. SM3AKW and SM5QA on 2001-04-11

and

2. SM7GVF and SM4IVE on 2010-10-11 at 1621 UTC.
    JO77GA (QTF=39) to  JO79SD (QTF=44, elevation=4)        Mp3 file here.

We made the QSO just to prove it can be done more than once on such a high frequency.
SM7GVF 67 el yagi and 150 W, SM4IVE 13 m dish 1kW.
Doppler shift was about +3 kHz.



Some more reading here.


2010-08-13 Meteor scatter on 432 MHz
I worked many QSOs on 144 MHz, using FSK441, during the Perseids shower.
I made also two attempts on 432 MHz. On 432 MHz, the signal strength is mostly much lower, and the burst length is much shorter than on 144 MHz.
I made QSOs with G4YTL and S50C in JN76JG (1196 km). This distance is a bit short even for 144 MHz, but never the less.
Below is one period with two very good bursts, I was very surprised over the length of these. But they are very rare.


2010-07-04 Es on 50 MHz to Japan
Es on 50 MHz is so common during the summer, not much writing about.
This morning, however, I had a good opening to Japan.
From 06:49 to 08:18 I worked 50 QSO:s, see map below.


2010-06-22 Es on 50 MHz to Japan
In the night from 22:02 to 22:29, this was an unusual time.

2010-06-20 Es 50 + 144 MHz
What a day! This is what I worked on 50 MHz;


On 144 MHz, two QSO;s were made, UR6EC at 10:45 and CT1DIZ/P (IM69HH, 2533 km) at 13:56.

2010-06-13 144 MHz Es
EA7 on 144 MHz!


There were two Es clouds in the direction to the EA7 stations from my QTH.
The map shows 144 MHz spots for 1700-1735, including my two QSO:s.

17:23    EB7COL   IM77AG    2668 km   mp3 recording
17:24    EA7TL       IM66VO   2744 km   mp3 recording
Nothing else worked (on 2m).


2010-06-11
15 QSO:s with USA on 50 MHz.

2010-06-08    50 MHz to Florida
At around 23 UTC there was an opening to Florida, click on the picture for a larger view.





2010-06-07 144 MHz Es
I have the impression this is the best Es season since many years, so far it looks very good.

2010/06/07 09:58 SV3BSF KM08UF SSB 2154
2010/06/07 09:58 SV2RM KN00PK SSB 1906
2010/06/07 10:02 SW6KRV KM09KO FM 1990
2010/06/07 10:19 SV8CS KM07JS SSB 2189
2010/06/07 10:29 SW6IED/M KM09 FM 2002+-
2010/06/07 11:11 YU2DX KN04GS SSB 1424
2010/06/07 11:11 YU2KO KN04ET SSB 1416
2010/06/07 11:18 YU1IO KN04IQ SSB 1436
2010/06/07 11:24 YU1EV KN04CN SSB 1440
2010/06/07 11:24 YT3N KN04LP SSB 1446
2010/06/07 11:34 SW2HXX KN10LN SSB 1927
2010/06/07 11:37 SW2HXX KN10LN SSB 1927
2010/06/07 11:39 SV2CXW KN10LP SSB 1918
2010/06/07 11:44 LZ3RX KN12TQ CW 1718
2010/06/07 11:50 LZ2CM KN13OJ CW 1632
2010/06/07 11:54 LZ1BB KN12PQ CW 1709
2010/06/07 11:56 LZ5UV KN12PR CW 1705
2010/06/07 11:57 YT1VP JN94WG CW 1465
2010/06/07 11:59 YU1EV KN04CN CW 1440
2010/06/07 11:59 YU1IO KN04IQ CW 1436
2010/06/07 12:08 LZ1RK KN22EF CW 1786


A second wave;
2010/06/07 15:07 YO4FYQ KN44FD SSB 1729
2010/06/07 15:15 US7VF KN58SH FM 1493
2010/06/07 15:16 UT1EA KN68RA FM 1615
2010/06/07 15:18 UT5VAP
FM
2010/06/07 15:19 UR5UI KN59BS FM 1305
2010/06/07 15:21 UY5UZ KN59 FM 1372+-
2010/06/07 15:25 UR5VFJ KN69OA SSB 1524
2010/06/07 15:26 US7VF KN58SH SSB 1493
2010/06/07 15:27 UY1HY KO60MA CW 1442
2010/06/07 15:28 US0GB KN67UA CW 1708
2010/06/07 15:32 UT1EI KN68SE SSB 1606
2010/06/07 15:35 UR3CFC KN58CR FM 1392
2010/06/07 15:36 UY5UZ KN59 FM 1372+-



2010-06-02 144 MHz Es
Yet another day with Es on 2 m.
2010/06/02 07:45 UA3RN LO03VK CW 1760
2010/06/02 07:50 RA3RF LO03WK CW 1765
2010/06/02 07:51 UA3RBO LO03NG CW 1727
2010/06/02 07:52 UA3RN LO03VK SSB 1760
2010/06/02 08:04 UA3PTW KO93BS CW 1524
2010/06/02 08:06 RN3RBP LO03VK SSB 1760
2010/06/02 08:07 UA4FHQ LO13UG SSB 1884
2010/06/02 08:08 RU3GX KO92SO SSB 1664
2010/06/02 08:13 UA3SBO KO93ST FM 1607
2010/06/02 08:15 RA3POV KO93CX FM 1520
2010/06/02 08:21 RA3LX KO65SE CW 1191
2010/06/02 08:22 RV3RA LO02QP CW 1772
2010/06/02 08:23 UA3XEH KO73FU SSB 1299
2010/06/02 08:23 RA3GES KO92SO SSB 1664
2010/06/02 08:26 UA4API LO20QC CW 2154
2010/06/02 08:30 RU4AN LO20QG CW 2144
2010/06/02 08:32 RV3RA KO92UQ SSB 1670
2010/06/02 08:33 RA3GL KO92FO SSB 1599
2010/06/02 08:48 RN3QR LO00BK CW 1821
2010/06/02 08:49 UA3WM KO72QI CW 1429
2010/06/02 08:55 RA3WDK KO81BR CW 1508
2010/06/02 08:57 RD3WAR KO71IM CW 1438
2010/06/02 09:00 RA3WDK KO81BR SSB 1508




2010-06-01 144 MHz Es
2010/06/01 12:13 G4RRA IO80BS SSB 1386
2010/06/01 12:51 EI9GQ IO51TV SSB 1577
2010/06/01 17:05 RV6YY LN04AO SSB 2239
2010/06/01 17:13 LY2WR KO24FO SSB 674
2010/06/01 17:20 UT8AL KO61WP SSB 1382
2010/06/01 17:25 UT8AL KO61WP CW 1382
2010/06/01 17:27 RA6HHT LN04WX CW 2309
2010/06/01 17:28 UR4LQ KO80BC CW 1609
2010/06/01 17:32 RA3WDK KO81BR SSB 1508
2010/06/01 17:47 UA3WM KO72QI SSB 1429
2010/06/01 17:52 UR5LLW KN89EQ SSB 1652
2010/06/01 17:53 UR5LX KO70WK SSB 1573
2010/06/01 17:54 RZ6BU KN84PV SSB 2069
2010/06/01 17:56 UY7QN KN77MJ CW 1748
2010/06/01 17:58 RA6AS KN93VN CW 2312
2010/06/01 18:05 UR6EC KN78XM SSB 1711
2010/06/01 18:07 UR4LQ KO80BC SSB 1609
2010/06/01 18:08 RW3WR KO71IM SSB 1438
2010/06/01 19:01 RW3WR KO71IM CW 1438
2010/06/01 19:47 UT7QF KN77MV CW 1709
2010/06/01 19:48 UT3EW KN78IL CW 1646
2010/06/01 19:49 UA6AGK KN96DQ CW 1978
2010/06/01 19:50 UT2QA KN86KS CW 1895
2010/06/01 20:16 US0GB KN67UA CW 1708
2010/06/01 20:21 RA6AS KN93VN CW 2312
2010/06/01 20:34 UY2QQ KN77OT SSB 1724
2010/06/01 20:42 UT1EA KN68RA CW 1615

The QRB is rounded in VQLog.
New ODX  RA6AS is 2317 km with WGS 84.


2010-05-26
On 49.750+- I have heard the signals below among the usual TV carrirers, any one know what it is?
It arrives from about 45 degrees, at 1000 UTC.

49747.7-am.mp3

49747.7-ssb.mp3

No one knows?

2010-05-23 144 MHz Sporadic E
This day there was a sporadic E for several hours on 144 MHz, but out of reach for me.

14:46 SW8NAC  KM07JS  2189 km SSB



2010-05-02 Aurora
Following two solar eruptions on May 1, we had some aurora again. It started in the early afternoon (I was not at home then) and lasted till about 1930 UTC. We had some in the night also, but no activity.
I worked the following squares on 144 MHz, with DF1CF in JN57 as ths southernmost station.


2010-04-05 Aurora
Between about 14:50 and 17:20 I worked 40 QSO:s on 144 MHz Aurora.
Are we at last seing an increase in aurora activity?
Worked QSO:s below.


2008-2009 openings

Openings 2007 and older here

See also my best DX worked list


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