Antennawork continues
Today the lower 40m yagi has been prepared for lift-off. The director has been centered and ropes has been put inside the elements to get rid of the vibrations. Still left in the tower is the cables for the upper antenna. It has to be taken down before it is possible to make the complete stacking cables and matching for the antennas.
We are also planning for a new antenna configuration for the repeater located in Gävle. Right now the repeater has two 6 el yagis for the TX, one north and one SW. After some simulation and considerations we have decided to build 8 small 4 element DK7ZB antennas. We have made a couple of prototypes and the mechanical design is better than the 6 el Vårgårda that we use now. The antennas will be placed 4×4. The final directions are not sure yet, but probably south towards E4 and west towards Riks 80 and Sandviken. In the direction West we have possibilities to put at least two extra receivers.
For the 70cm repeater antenna project we are missing some small pieces of 20x20mm aluminium and the boxes for the driven elements. The stacking will be made of 75ohm cables.
Tomorrow some work on the Ericsson tower will take place. Paint the rotor for the 40m yagi and take down the old 15el CUEDEE 2m antenna and replace it with a omni-duoband antenna for 2m/70cm. This will replace the small 4el yagi used for the repeater RX. We will also have the possibility to inspect how that antenna has been affected by weather after two years in the tower.
