Solar Data

zondag 15 augustus 2010

QRV from the Field

Last Wednesday, the predictions for the weather where not so good and we decided to do this activity yesterday. We were lucky: sunshine and good temperatures.

The purpose of this event was to build up the portable mast and see if the additional support is good enough. At about 6 meters height, we made an extra point with 3 ropes. It looked good and solid but from this upper point of the mast was pretty crooked.





The idea is to make the support more higher to obtain a better stability.The upper part have Eric, (PE1FES) and I let down, there was now about 6 meters mast on. The mast was now stable, without curves. The suspension point for the variation of the G5RV/ZS6BKW (2 times 7.77 meters) is here by also lower.


In both situations, I made some qso's. On 20M a cw qso with I6WJB in Pescara. This was my first cw qso while I was standing, we forgot the seats.
On 40M, I made qso's with: F/PH2CV/P (cw), SP9KAT (ssb) and SP9WZS (cw).
TRX: FT817nd with internal battery + later a external battery. The output power was only 2.5 watts.

We have had a lot of fun!

73, Tjeerd (Gose) - PA3GNZ

zondag 8 augustus 2010

6 meters & J-pole for 2 meters

Yesterday morning around 8:00 local time, I heard during my breakfast signals from the beacon I0JX/B on 6 meters. Unfortunately, no further action was heard and gone outdoors for other activities that day.

Today I borrowed a swr meter to see what the swr is of my homemade 2 meters J-pole antenna made of 300 Ohm ribbon cable. The swr was reasonable, 1:1.4.





The J-pole antenna hung in the doorway to the balcony.

I made a qso via the repeater of Amersfoort (PI3AMF) without problems, 5 watts output. The other station told me that the swr is improving by an RF choke. I got a phonecall and the qso was abruptly ended. Google gave me no answer for an RF choke for this situation. Any ideas?


73, Tjeerd (Gose) - PA3GNZ

donderdag 5 augustus 2010

6 meter antenna

It's almost a week ago since I put my last post on this blog. This means that there was't to much time for the radio hobby.

Last week there was a chance of Aurora Borealis by an eruption on the sun. Unfortunately, the Aurora was to weak for me in JO21RV to hear signals on 6 meters via this propagation.








The antenna for 6 meters has not stood on the balcony for a few weeks. This antenna is a 5/8 wave for 2 meters. With a piece of extended it's now a fourth wave for 6 meters. The extension has now made a final.
This year I made a lot of qso's via Es with this antenna.




Thanks to Eric, PE1FES, for the mechanical work.

73, Tjeerd (Gose) - PA3GNZ

vrijdag 30 juli 2010

My homebrew corner.

This week I walked around in my house with my camera and came up with the idea of yet another new picture of my homebrew corner. This is the result. On the desk are the components of the Limerick Sudden receiver project I'm doing.

Limerick Sudden receiverAs the manual shows I started assembling the IC holders for the LM386 and NE612.



I haven't found more time in the past week for this project.

Wednesday afternoon I had a qso with SM3YQX/4. Lars Erik, 30 km west of the town Mora. He worked with 100W in a dipole, I with 2.5 W in the ATX-1080.

Good weekend all.

73, Tjeerd (Gose) - PA3GNZ

donderdag 22 juli 2010

Limerick Sudden receiver

Limerick Sudden receiver PA3GNZYesterday I opened the envelope of this kit to verify that all components are in the packaging.





In the manual there is a list of components and I soon found out that all these components are present.Limerick Sudden receiver PA3GNZThis weekend I read the manual and make a plan how I going to start the building.
My idea is to make the wiring to the antenna connector with RG174 coax and not with the twisted wire which is written in the manual. For the antenna connector, I like to use a BNC chassis instead of a RCA chassis.

I'll keep you posted about this project.

73, Tjeerd (Gose) - PA3GNZ