(Spanish) Bienvenida a los lectores de Radioaficionados (URE)

Quiero dar una bienvenida especial a todos los que han llegado por primera vez a estas páginas desde la revista de la URE. Es para mí un placer poder compartir con vosotros mis aventuras en esta interesante afición.
Espero que encontréis algo de interés, tanto en este BLOG como en mi WEB principal:

http://jvgavila.com/

o en alguno de mis otros BLOGS:

 http://sdr4everyone.blogspot.com.es/

 http://delcontenedor.blogspot.com.es/


73 JOSE EB5AGV

Back to SATs! (2)

Well, there were some problems with my antenna setup of last week... one of the problems is that I have replaced the sepparate rotor controls (Yaesu G-400RC and Kenpro KR-500) for a all-in-one Yaesu G-5600B (note that I have replaced only the control box, which I bought used some years ago). I have done this in order to control the rotors from the PC easily, as the G-5600B control includes internal relays and has buffered positioning signals.

But one problem is that it is a South referenced control... and my antennas were North referenced. This was not hard to fix :-)

Then a worse problem arised, as there was some miscalculation on the 2m elevation antenna and one director collided with the 6m boom from about 50º elevation... not a good thing!

In order to fix the bent element, I needed to access to the 2m Yagi. But it was too far to reach. So I modified the antenna position by displacing the elevation boom. Current positioning is shown on next picture, with the elevation antennas pointing to sky:

I have also reshuffled the rigs on my main radio station position, so now I have a rig devoted to SATs (Yaesu FT-847), another for Earth work :-) (Yaesu FT-736R) and another for local work (Kenwood TS-790E). Of course, all of them could be used in the others roles, but this is my first approach.

I have ordered an AMSAT-UK LVB Tracker Kit (I have ordered the cheapest one, as I plan to do a custom case and add my own display and buttons) and will work also on the FT-847 CAT control from a tracking program (I will look for a program which cares about Doppler)

So, all in all, things are progressing!

73 JOSE EB5AGV

Back to SATs!

Well, not yet, but, after 10 years without elevation antennas, they are back in my tower !

Here you have a picture of the installation done during this weekend. Now is the turn for the tracking interface... more to come!!!

73 JOSE EB5AGV

R&S NV 1/156 VHF Multi-coupler

This is one project I had stored for a long time... I got the unit some time ago and worked on it to fix some transport damage and clean it:

EB5AGV's Workbench: Rohde & Schwarz NV 1/156 VHF MULTI-COUPLER repair

But, as I said in that page, it was deaf and, suspiciously, one of the tubes, an EC80 UHF triode, measured low in the unit's own multi-meter (a great idea, BTW)

Finally, I got some EC80 spares and was able to check it. Wow!!!. This unit was manufactured in 1966 so it is 44 years old (2 more than myself, hi!). But it still works fine and, even if its noise figure is for sure higher than the modern equivalent, as it is specified from 100 to 156MHz, it is perfectly usable for FM broadcasting, monitoring air band (around 120MHz) and, of course, 2 meters ham band.

Here you have one picture of the unit, still cover less, connected to two rigs:



The multi-coupler has 5 outputs so I will add more rigs to it and use as a monitoring system.

It is great to mix old technology with 21st century rigs :-)

73 JOSE EB5AGV

Welcome to RadioRepair BLOG!

Well, the aim of this blog is to help fellow Amateur Radio people to fix their rigs. I will publish my repair works so everyone can benefit and comment about them.

I have a WEB page since 1997 where you can find lots of information of my repairs:

EB5AGV WEB

I will start to place content here in short time so, please, keep tuned!

73 JOSE - EB5AGV