LU5DX

Amateur Radio, HF propagation and other stuff

QSY to Solar Monitor

Monday, May 05, 2008

Fab, DJ1YFK @ 150 - 200 WPM

Yes, can you believe that? 200 wpm -words per minute - Morse Code. There are just a few guys in the world that can copy at that speed, one of them is my good friend Fab, DJ1YFK. He is in the top list of hte RUFZxp permanent ultra high speed Morse Code contest. www.rufzxp.net . He is also top in the standings of the Bavarian Contest Club High Speed CW competition using the contest simulator by JE3MAS.
I bet you won't copy a single bit of what's he is doing in the videos, but anyway it's amazin to see how he performs!!!

In this first video he copies JA7MEH at 1000 CPM, that is 200 WPM based on the PARIS meassure system. He copied the call on the first try!



Here Several calls at 150 + WPM!!!


Vy 73.
Martin, LU5DX






Saturday, May 03, 2008

Tarik - 9 y/o - Ruling the Airwaves!

Tarik - 9 y/o kid- Operating CW at YT1AAV!! He for sure is making a 2 way CW (Morse Code) QSO with some distant fellow radio amateur over the air waves. The magic is still there! Gotta get in touch with it and enjoy it yourself!




Thursday, March 13, 2008

2008 ARRL INT'L CW


Hey everybody!We enjoyed another excellent weekend at LT1F!! Meeting Mario LW8DQ and Horacio LW7DX two ops at LR2F at Rosario's bus station was our first surprise. It was around 6 am in the morning and after chatting for a while with them we headed to LT1F with Karl, LU1FKR .One our way to the antenna farm we stopped by Jose's LU1FJto get our backup rig an IC756. When you are arriving at LT1F you start remembering wonderful moments spent along with good friends what is always a priority for us all. After we parked our cars, we checked rotarors and antennas and everything was ok. After awhile we started hooking up the radios and amplifiers. Our main station was anIC775DSP + L4B and our multiplier station was an IC756 + TL922, with two networked PCs. We tested all the antennas except for our 2 El delta loop for 80 and our 160Slooper. After we connected our 80 antenna we realized that something was wrong.The 75 ohms feed line wasn't working and after 30 minutes Karl LU1FKR solved ourfirst issue. All antennas were working fine, so it was time to verify all computers were working ok Lucas's notebookwasn't working properly when we tried to load N1MM but after a fast deletion of internet temporary files (1.5gbs) it started working ok. We used 2 external USB keyboards, so we ran both station on in every possible band combination to make sure RFI problems were not present.
Videos at: www.youtube.com/lu5dx .

Finally the station was ready to go.We ate our first bbq of the weekend by Friday's noon. Santi LU1FT joined us and at 2:30 PM, I took a nap to recover from the trip. When I woke up Fabi LU1AEE and Marco LU7ACW (Fabian´s 14 years old son) were at the station. Now going back to the contest. I started it on 20 which produced 230 Qs during the 1st hour. After 2 hours we switched to 40 and realized that we had a big SWR. Very fast Santi and Karl checked the feed line connector outside of the shack, in the meantime,I headed for 80 m and ran 22 Q´s at 02 UTC which is quiet a good number due to the bigEU-USA wall to wall qrm. When the 40 antenna (3 el) was working again we went to 40 m and made 140 and 170 Qs reively .That was our first night.The morning was slow. At 1PM UTC we started working station on 15. We continually checked 10 but the band was dead for most part of the contest. We ran a few stations on 10. During our lunch Juan Pablo LU4DX and Jorge LW4EU payed us a visit,that included our second bbq of the weekend. I want to congratulate Marco LU7ACW, who didn't operate but he was always checking bandconditions and put multipliers into the band map during the whole contest! He didan excellent job! Thank you Marco!!
During the first night we didn't notice any difference between our 2 El DeltaLoop and the beverage. Fabian, Marco and I checked the bev and fixed it, something wasn'tworking well. Now we are planning to put another one for the SSB one. Our 160 slooper played well, but I have to confess that we didn't pay muchattention to 160. Lucas just moved some stations from 80 to 160, I want to congratulate K1ZM andK3LR who were the strongest signals on Top Band!That was it. Another excellent contest from LT1F. We all want to thank Karl LU1FKR for his support and to all of you who contacted us. Hopefully we will beduring the SSB one M/S as well.




Calls on 6 Bands:

K1XM

K3LR

KC1XX

W7RN

Rates:

2 QSO in minute 609

3 QSO in minute 342

4 QSO in minute 147

5 QSO in minute 39

6 QSO in minute 2
Call: LT1FOperator(s): LU1AEE LU1FAM LU1FKR LU1FT LU4DX LU7ACW
Station: LT1F
Class: M/S HP
QTH: Rosario
Operating Time (hrs): 47.4
Summary: Band QSOs Mults
-----------------------------
160: 10 7
80: 279 49
40: 918 57
20: 1041 59
15: 1273 58
10: 169 39
-------------------
Total: 3690 269 Total Score = 2,977,830Club: LUCG


Saturday, March 31, 2007

2007 CQ WW WPX SSB @ LT1F M/2


We just had a great time during last WPX SSB contest. We were trying to put together a Multi Multi operation, but our friends from LP1H had decided to test LU5HM's station in the Multi Single class. Lucas also invited Roberto LU2FA, the owner of LR2F, but Roberto had also organised a Multi Single from LR2F, with LU6ETB, LW7DX, LU5FF and LU1FZR. Roberto is continually improving his station and has already achieved a great performance.The LT1F team for this contest included: Karl LU1FKR (the owner and driving power of LT1F), Lucas LU1FAM, Fabian LU1AEE,Juan Pablo LU4DX, Diego LU8ADX and myself. Everything was in place for the contest. LU1AEE and I tested the station during ARRL DX SSB, and there were no issues, except for the 20 M ant not rotating 360º. On Friday I woke up early around 4 AM, to go to LU8ADX's where we were to meet LU1AEE. From there were traveled to LT1F bycar, it is a 3 hour trip. When we arrived in LT1F, LU1FKR was there working as usual. We unpacked everything including LU8ADX's Ameritron AL 1200. Carlos prepared dinner for us. A great BBQ! We spent a long time talking about our hobby, future improvements to the antenna farm, etc. etc. Around 4 PM, LU4DX arrived in. Juan Pablo carried his IC 775 with Inrad roofing filters for the occasion. Carlos, started to hook up the coax stubs at the output of the Six Pack. Each stub is located at an electrical 1/4 of wave of the reject freq away from the amps.
All the photos available at: http://picasaweb.google.com/lu5dx.cw

I set up the network and N1MM was ready to go. We had positioned the two stations side by side so the ops could reach the antenna switches and rotor control boxes easily. Although the stations were very close spaced and sharing antennas through the Array Solution Six Pack, there were no inter- station interference at all. We even did not connect the RX bandpass filters, with only a couple of exceptions during the weekend, and not because there was QRM, but just in case. LU1FKR also set up an Icom IC 765 for spotting purposes, connected to a Log Periodic. Mainly to check for 10 m openings.We had no cluster this time, so the only way to know when 10 opened was to listen to the band. Around 6 pm, Lucas LU1FAM, arrived and the whole crew was there.Prior to the contest, we talked a little bit about propagation and decided that 15 and 20 would be good options to start the contest. Indeed it was the right choice as we ended the first hour with almost 400 Qs.


Then things started to slow down as we moved towards the low bands. 20 M remained open for quiet a long time. 40 mts was very tough this time. You know, March Equinox is not a good time for 40/80 mts from LU. May for example, is much better. So we spent most of the night on 20 and 40. 80 was very nosy, and with week signals, at least in the 2 el wire array. We decided to take that array down, cause we were never satisfied with its performance. The array was built in the previous years. It was a 2 el driven broadside array, supposed to have the radiation pattern favored to North, but well. During the previous days Karl and I decided to install a 2 el full size Delta Loop for 80 mts, what we did on Saturday. I designedthe antenna using MMana-GAL and Nec for MMana. The whole installation process took about 10 hours from 10 AM to 8 PM. We really learnt a lot doing this job. But most important that when it comes to antenna performance, there is no room for guessing at all. The antenna performed extremely well. We made 41 Qs mostly with USA stations. Everybody copied our Callsign at the first try and gave us very good signal reports, including a 10 Db over S9! As everybody was loud on the delta loop, there was no need to use the Beverage for RX. We tested the delta loop AM during Sunday.Going back to Saturday. When 15 opened everything seemed to be OK, although signals were very week, everybody was so excitedwith the contest, and LU1FKR and I building the Delta Loop, that we forgot to lunch!!!!!!!!!!!Ten meter opened quiet well, including a little but solid EU opening. The first day ended up with 3300 Qs in the log.So we thought that we could eventually achieve some 5500 by the end of the contest, but after 00 Z on Sunday, things startedto change. Rate went down and down during the night. We stayed on 20 and 40 most of the night with the exception of aboutan hour on 80 to test the new antenna. LU4DX and LU5DX on 20 and 40 respectively stayed up all night transmitting long endless CQs to catch a few takers. As I had not slept since 4 am on Friday, and having spent so much energy installing the Delta, Ireally felt tired. LU8ADX woke up at around 5 Am LU time and shifted positions with LU4DX, and later around 8 AM LU1AEEtook my place. I went to bed and requested LU1FKR to wake me up at noon to cook the GIANT PIZZA.

I woke up at 1215 LUT, and started the Pizza Ritual. Which ended at around 1530 LUT. Needless to say the operation stopfor a while so everybody could join the pizza party. LU1FKR achieved PIZZA MAN Honors this time! He was great in gettingthe fire ready to cook the pizza.About Sunday we can only say it was really slow!! 10 and 15 m never really opened. We hear several times LR2F running stationsat a good pace, but all the calling stations were dupes for us.The contest finished on 40/20 with a round of applause.
We all really want to thank everybody for the Qs. Congrats to the AN8A boys for a job well done. Also congrats to theOE4A boys for achieving such a great performance from their beautiful station. We really hope to work many of youduring WPX CW, this time a bigger delta loop and more Pizza!
73
LU1FKR, LU1FAM, LU1AEE, LU4DX, LU5DX, LU8ADX



CQWW WPX Contest, SSB
Call: LT1F
Operator(s): LU1AEE, LU1FAM, LU1FKR, LU4DX, LU5DX, LU8ADXStation: LT1F
Class: M/2 HP
QTH: Rosario
Operating Time (hrs): 48
Summary:
Band QSOs
------------
160: 0
80: 41
40: 509
20: 1398
15: 2169
10: 764
------------
Total: 4881 Prefixes = 1191 Total Score = 18,558,162
Club: LUCG
Comments:
Rigs: IC-775DSP (LU1FKR), IC-765 (LU1FKR), IC-775DSP with Inrad roffing filters(LU4DX)Amps: Drake L4B (LU1FKR), Ameritron AL-1200 @ 1000 W (LU8ADX).Antennas: 28: 6/6 el yagi (not in stack)21: 6/6 el yagi (stackable)14: 5 el yagi / 4 el yagi (not in stack)7 : 3 el yagi KLM type3.5: 2 el Delta loop aimed at USA (LU1FKR/LU5DX)RX: 600 Ft bev straight North
Coaxial Stubs at the output of the array soulition 6 pack.Logging Soft: N1MM - 2 Pc networked via ethernet.

Thursday, March 08, 2007

2007 - ARRL DX SSB @ LT1F


I actually never planned to enter this contest! But, as we all are getting ready for next WPX SSB, LU1AEE, LU1FKR and I decided that the ARRL test, would be a great opportunity to double check everything and leave things in place for WPX.So on Thursday before the contest, after a couple of quick calls we were ready for the contest.I really must thank Karl, LU1FKR for his never ending support and hospitality. He is of those persons that you can only meet through amateur radio!! He never refuses when there is a chance to enter a contest from LT1F, instead he feels really happywhen we visit the antenna farm.



LU1AEE and I departed at 18Z from LU1AEE's in Buenos Aires, three hours later we were arriving in LT1F antenna farm in Rosario.Ariel, a neighbor who lives close to the station, gave us the keys. A few minutes later, LU1FKR joined us. He carried the rigs IC 775DSP + IC765 and the Drake L4B.You know, the station was not used very much during last year. Lucas LU1FAM, entered a couple contests. But there was no big Multi Multi for CQ WW. Anyway, everything seemed to be in place. Karl, started to hook up everything. There was only one minor repair to be done in the control cable of the 40m antenna rotor. Ariel and I fixed the cable, and that was all.We pointed all the yagis to USA, and we were ready to start the contest. I wanted to record audio, so we hooked a splitter to the phone jack in the 775, and from there we run a cable to LU1FKR's notebook and used total recorder to do the job.I started the contest on 20, because 15 sounded really punk.



As I have no experience in SSB contests, I really felt very nervous during the first hour. Anyway 296 Qs were in the log, at 0100 we shifted positions with LU1AEE, cause I needed a rest after what for me was like a dream come trhough. I never thought that I was able to make more than 200 Qs/Hour on SSB!Anyway, now I believe that more than 360/400 Qs/Hour are possible on SSB, cause there were lots of CQs during the big run. So, maybe from the Caribbean, with a continuous pile up you can do that.Conditions were really bad, we just had a few hours over the 200 Qs mark. Ten meters never really opened on Saturday. We only managed to work 136 Qs and 17 states the first day, and with very weak signals and deep QSB. Lots of stateside stations that did not know what the contest was about, so had to explain them what it was. One funny thing happened to me on sunday afternoon on ten. I was running stations on 28430. I was there for about an hour then I started hearing two guys rag chewing on my freq. The pile up was consistent so I did not want to give up and QSY.After a while, one of them who said to be N0XK, started making funny jokes about contesting, I asked him to QSY, and he refused, cause he was talking to his neighbor. I told him that I had been using that freq for over an hour, which he did not believe, anyway he left after complaining a bit and calling me liar for a while. I believe he did not have a clue about solar cycle, propagation, QSB and all that stuff! 40 M played well the firs night. There was a big thunderstorm but the beverage was of great help. Same thing on 80. Anyway we are building a new antenna for that band.No 160, but I'm sure we will build some new antenna for top band. Lots of stations requested us to QSY to 1.8, I reallyapologize guys, we will solve the lack of a good 160 antenna soon.Second day, was much better on ten, we finally worked 699 stations on that band.
More Pics at : LU5DX´s Photos






We ended up the contest with the following score:

ARRL INTERNATIONAL DX CONTEST -- 2007
Call: LT1F
Category: Multi Single
Power: High Power
Band: All Band
Mode: SSB
Country: Argentina
BAND QSO QSO PTS STATES/PROV
160...... 0
80 ....... 84......252........32
40........642....1926.......55
20.......1033...3099........56
15.......1768...5304........59
10........699....2097........43
-----------------------------------
Totals 4226 12678 245 = 3,106,110
All reports sent were 59(9), unless otherwise noted.
Operator List: LU1AEE, LU1FKR, LU5DX
Equipment Description: IC 775 DSP + L4B @ 1kw.
Antennas 6/6 for 10m, 6/6 for 15m, 5el for 20, 3 el for 40, 2 el wire array for 3.5
RX ant: Beverage straight north.
Club Affiliation: LUCG