Moskojärvi, a real adventure

The weekend of 7-9th of September a brave bunch of men (and Anna) went up to Moskojärvi to take down an old 60m high rotatable OH8QD tower which was put up in 1983. This tower must have been one of the biggest setups in the world by that time, since it held 4/4/4/4el on 20m, 3/3el on 40m plus some smaller antennas which were a 4el for 15 and 5el for 10m. Giselle, our host was very kind to us and we got the tower and all accessories for free if we just took it down. So it costed us some gasoline money and the cost of a crane for 6 hours.

I had seen the tower a few times when going between Luleå and Kiruna for work, but I had never stopped. I had heard that it was painted and in very bad condition so I did not really ever care about the tower, since in that case it would have been ruined by this time. SA5BJM called a few years ago and talked about that the lady had given him the tower if he just took it down and asked if I was interested but I said no, since it was in bad shape. But then last year Aloys, PA3DAT sent me pictures of the tower during his trip through Sweden and I could see on the pictures that the tower was galvanized, which changed the interest in the tower drastically. So me and SM2XJP took a trip up there to check it out (450km one way drive) and it was in beautiful shape. The antennas looked like trash but the tower and all hardware such as guy wires looked like it was put up last year, so we got very interested and decided to take it down. However it did not happen last year and I was about to postpone the plans this year too because of both economical but also the lack of time. However, SM3JLA thought I would be stupid to postpone it and when SG3P (SK3W) offered to join us I decided we should try this autumn. So after a bit of planning we had decided for the weekend 7,8,9th of September. We would arrive on Friday, start taking down antennas on Saturday and the crane would arrive on Sunday morning sometime between 8-9.

Everything went very smoothly and SG3P did most of the climbing with SM2NOG helping out a bit in the beginning. I was lucky enough not needing to climb at all, which was probably for the best since I was feeling a bit stressed about things the whole weekend. The most tricky part was taking down the 3el for 40m which was broken in half, but that was taken down without any big problems and by Saturday evening the tower was stripped off and the only antenna left was the top 3el for 40m.

The crane driver was not very happy when he arrived, since he though the ground looked very soft. But I told him that it is very hard 20cm below the surface but many has probably told him that before, without it being true. But after a bit testing he discovered that I was right and he was good to go. It took a bit longer than I expected but the total cost of taking down the tower (excluding gasoline for the cars) was below what I had expected.

Of all the aluminium in the tower most can be used again. The 40m beams looked to be in pretty good shape and I can without a doubt use the material to build the 2 pcs of 40m yagis (2el) that I have been planning to put up in the 40m military project. Also a 4el for 15m will be used and put up @EU in the 18m tower (currently also holding 4el for 20  @EU and 5el for 15m rotatable). There was also a 5el for 10m that was in pretty good shape, one element missing but otherwise OK.

Giselle was a great host and seem to enjoy our company at the cabin and also stayed to bbq with us during Saturday evening. We had a great time, things went smoothly and big thanks to SM3JLA, SM2NOG, SG3P, Anna and me for helping out during the weekend. SM2Z also stopped by a while to say hello on Saturday.

The tower is planned to be put up next year, either in the summer or winter depending on if we will use a crane or not to put it up. Plans are to build a 2el monobander for 80m (probably ~23-27m long elements) and 4x6el or 5x6el stack for 15m. A big 10m stack is currently postponed for next solar cycle peak.

It is so many pictures, so I was too lazy to write texts to all of them, but enjoy! And for Swedish speaking people (or people using google translate) there is also a post about this on Elektronikforumet, http://elektronikforumet.com/forum/viewtopic.php?p=875356#p875356

ACOM 2000A has arrived

The ACOM 2000A that we got from Ojojoj Music AB has arrived. I haven’t been this happy about a package since I was a little kid. However SM2LIY has been assigned to the Swedish “national team” in the SAC contest this weekend so he will be running the contest without the amplifier since he was assigned to the low power category, since we did not know the amplifier would arrive in time. But I will sure play around with it before and after the contest. Now I will start putting the remote together for real as well, and we’ve gotten sponsored by SM2O and his Microbit company as well with their remoterig products that will be the core of our remote operation.

Again thanks to Ojojoj Music AB!

ACOM 2000A sponsored!

As the followers of this blog know, we’ve been having lots of problems lately with the amplifiers at SJ2W. Lucky enough there are very kind people in this world and we have gotten a brand new ACOM 2000A sponsored by Ojojoj Music AB. We are extremely happy about this since the amplifier is very robust, fully automatic and will also be of great use for us when remote controlling the station.

Even though probably many think that the SJ2W station is a station built with a large budget that is not the case. Most of the stuff at the station are surplus gathered by different members and most of the money put into the station comes from my salary with a few exceptions from time to time, for example the last aluminum order. This means that such a contribution made by Ojojoj Music AB has got a great impact on us! Now I feel highly motivated again and lots of stuff is planned to be done before the snow comes. So stay tuned!

ACOM 2000A sponsored by Ojojoj Music AB

House work almost done

The work on the house is almost done for this year. Left to do is some painting but then it will have to wait until next year before we do the last side of the house. Now it will be all radio from now on this year! I am still hoping that we might get the 40m tower up, it would be a huge help if we just had it up even if not rotatable, so we could fix a yagi for 20 and 40m towards east. That would make us a lot more flexible, so that will be the goal for this autumn.

For the weekend of 8-9th of September we’ve planned to take down a 60m tower which is located up north outside of Gällivare. It is a tower which was put up in 1985, so its 10 years older than my 60m tower and built by OH8QD. It seem to be in very good shape and if weather allows, we might have it down on Sunday the 9th of September. SG3P (SK3W) is coming up to help along with SM2NOG, SM3JLA and SM2XJP.

If this goes well we will know what our big project for next year will be…

SM2LIY was also joining us at the QTH last weekend and spent some time in the forest putting up 500m of RG-6 to a vertical which will be used for inband listening. We did some early tries with his IC-7400 as receiver and it seem to work quite well. However I think it would work even better with a radio which has got better IMD performance (maybe a good roofing filter), so I will make some tests with the MKV as RX and compare. Plans are to add a new radio to the shack in the future, and it will probably either be another MKV or a TS590. The preamp seem to work well, but I’ve got some idea of maybe making another type and use just to compare, but we will see…

Hopefully our major amplifier problem has also been solved, but I’ll get back to that in a future post when things are final.

Pictures were taken by SM2XLL