Category Archives: Electronics - Page 11

9A CW + various electronics

Posted by sm2wmv on January 27, 2015 Comments Off

I did the 9A CW just before Christmas and it seems to be a #1 EU win so very happy about that.

I also built some on the QBL amplifier, did a few things down at SJ2W during my vacation and lately I have been trying to figure out if I should start to sell not only PCBs for antenna switches but maybe also complete switches. I think the result seem to come out pretty good and its high quality stuff, so maybe its worth it. Its a way to fund the progress @SJ2W which seem to be a big black hole when it comes to money 🙂

                    Croatian CW Contest

Call: SJ2W
Operator(s): SM2WMV
Station: SJ2W

Class: SOAB HP
QTH: Da Traesk
Operating Time (hrs): 19:11
Radios: SO2R

Summary:
 Band  QSOs  Mults
-------------------
  160:  109    27
   80:  299    43
   40:  338    56
   20:  436    57
   15:  343    57
   10:  161    54
-------------------
Total: 1686   294  Total Score = 1,169,532

Club: Worldwide Young Contesters

Comments:

This was quite fun. I didn't know if I would do it serious or not. During the
time I did operate I did it serious but I took a long nap during the night. I
don't know how much I lost because of that but because DX activity is so low in
this contest I don't think it hurts too much when Europe is still sleeping. I
had intended to sleep 3 hours though but it ended up being almost 5.

40m was horrible during the night, the MUF went below 7 MHz so I could not hear
any Europe so I had to spend a lot of time on 80 and 160m. Otherwise conds were
really good except as stated the DX activity is very low in this one. Tried to
run some on 40m during daylight and it was monster signals from JA/US but no
callers.

Fun to hear UT2G, YR1A, UA5A with high numbers. Not sure of their category
though so it will be interesting to see.

Antennas
160m: 39m vert
80m: 4-SQ
40m: 3/3el + 2/2el + 4-SQ
20m: 6/6/6el + 5/5el + 4el @EU
15m: 6/6/6/6/6el + 6/6el + 5el
10m: 6/6el + 6el @46m

FT1000MKV + 4-1000A
K3 + ACOM 2000 (Sponsored by Ojojoj Music AB)
N1MM Logger

[Show as slideshow]

More electronics + CQWW DX CW

Posted by sm2wmv on December 3, 2014 Comments Off

I went down to Burträsk already on Thursday and SM2XJP picked me up as usual in Skellefteå. Major work was to get the new 60m Moskojärvi tower rotatable and after a bit fault searching by me, SM2XJP and SM3JLA we found the problem being a shortcut bar in the terminal jack which I had not see when I put it together. When that was removed it all worked great. I managed to setup the station on Thursday so Friday was calm and nice before the competition. OH2UA who is the op who beat both me and SM2LIY in SAC this autumn asked me what our plans were for the contest and was willing to come over and help us out. It was a great addition to the team and Toni fit in perfectly and I sure do hope this was not the last we’ve seen of him @SJ2W. SE2T came on Friday evening but had to leave for a family dinner but was back on Sunday when SM3JLA had to leave.

Anyway it was a real blast and we could not have asked for a better result. Bands were the best they’ve been for a CQWW CW all the years I’ve participated and we managed to increase our Scandinavian record by some 30%

                    CQ Worldwide DX Contest, CW

Call: SJ2W
Operator(s): OH2UA SE2T SM2LIY SM2WMV SM3JLA
Station: SJ2W

Class: M/S HP
QTH: Da Traesk
Operating Time (hrs): 48

Summary:
 Band  QSOs  Zones  Countries
------------------------------
  160:  198    15       68
   80:  294    35      112
   40: 1205    40      144
   20: 2036    39      143
   15: 1846    38      149
   10: 1150    40      153
------------------------------
Total: 6729   207      769  Total Score = 15,032,352

Club: Worldwide Young Contesters

Comments:

What a blast! I must say that propagations can't get much better than this for
us this late in the year with mostly just darkness outside, it was pretty much
perfect.

We had operator reinforcements from OH in form of OH2UA, who normally operates
for our biggest rivals OH8X and it was a great addition to the normal bunch of
old farts @SJ2W.

Station worked flawlessly and we got the new 15 stack rotatable as well and it
was a great boost for us.

Antennas
160m: 39m vert
80m: 4-SQ
40m: 3/3el + 2/2el + 4-SQ
20m: 6/6/6el + 5/5el + 4el @EU
15m: 6/6/6/6/6el + 6/6el + 5el
10m: 6/6el + 6el @46m
8 beverages

FT1000MKV + ACOM 2000 (Sponsored by Ojojoj Music AB)
FT1000MKV + ACOM 1000
K3 for inband
N1MM Logger

[Show as slideshow]

More electronics

Posted by sm2wmv on December 3, 2014 Comments Off

I got more PCBs a while back and I’ve put them together and tested them. It’s first the main board for the amp project where I can place various boards depending on how much Digital I/O, A/D inputs etc is needed. If I fill the board up I can have 32 Digital I/O, 4 stepper motors, 24 sink driver outputs, 16 A/D inputs 16-bits. I have also made boards for a sequencer to handle timing critical stuff and a power meter board. I’ve started with programming some of it and so far it seem to work fine, but still a lot of work left to be done.

[Show as slideshow]

Rotator work

Posted by sm2wmv on November 13, 2014 Comments Off

Last weekend me and Anna + Hicco spent some time at the station. I mainly spent time getting the rotation of the Moskojärvi tower to work. Me and my neighbor also spent time planning out where to put the inband tower on his land. The plans turned out great so now we have a fun project for next year. Left to do getting the Mosko-tower rotating is putting the pot in place, running a bit more cables and configuring the rotator board for the openASC system. So hopefully its finished before CQWW DX CW in a few weeks.