A few days ago, I talked about the radiosondes that are launched every 12 hours from Madrid-Barajas Airport. Yesterday, I went with my mother on a trip to try to recover the radiosonde that was launched at 11:00UTC. This radiosonde managed to ascend to 31000m before bursting. This is quite high for a radiosonde of this kind, as they usually burst between 24000 and 28000m.
We left home at 13:00UTC, so the radiosonde was quite far from us by that time. The last telemetry we managed to decode was when the radiosonde was 3800m high and on its way down. It was flying over Sacedón, in Guadalajara, and slowly drifting eastwards along the road. We were still on our way to Guadalajara, more than 40km away.
Today I’ve hiked up with my father to Siete Picos, SOTA summit EA1/SG-005 (2138m), to participate in this month’s national V-UHF contest. We arrived and set up around 07:30UTC and worked until 11:30UTC, where activity became low, as most possible contacts were already done and people started to leave in order to prepare lunch. The equipment was a Yaesu FT-817ND and an Arrow yagi antenna (3 elements in 144MHz and 7 elements in 432MHz).
Below is the map of stations worked. My position is in red, stations worked both in 144MHz and 432MHz are in green and stations worked only in 144MHz are in blue. The black station is the odd one that I could only work in 432MHz. This can happen if you catch them first in 432MHz, then a big mess with several stations arises and you’re unable to tell them to change to 144MHz to make the contact and decide that you’ll catch them in 144MHz later, but you don’t manage to find them later.
Today, I’ve participated in this month’s national V-UHF from Cerro de San Pedro, SOTA summit EA4/MD-020 (1425m). I arrived the summit a bit before 10:00UTC and worked until the end of the contest (14:00UTC). The equipment was the usual: a Yaesu FT-817ND and an Arrow satellite yagi antenna (3 elements in 144MHz and 7 elements in 432MHz).
Find below the map of stations worked. My location is in red, stations worked both in 144MHz and 432MHz are in green and stations worked only in 144MHz are in blue.
Last Sunday, I hiked up Cerro de San Pedro, SOTA summit EA4/MD-020 (1425m) to work in this month’s national V-UHF contest. I was on the summit for 4 hours, from 7:00UTC to 11:00UTC, and I managed to work quite a few stations. As always, I used my portable QRP station consisting of a Yaesu FT-817ND and an Arrow satellite yagi antenna (3 elements in 144MHz and 7 elements in 432MHz).
In the map of stations worked, my position is in red, stations worked both in 144MHz and 432MHz are in green and stations worked only in 144MHz are in blue.
This weekend has being very rainy, so I haven’t been able to participate in the national V-UHF contest with my usual portable setup. Instead, I have driven to the countryside just outside town and used the mobile antenna on my car to work in the contest from inside the car. This antenna is a 50cm vertical whip which is magnetically mounted on the roof of the car. Of course, due to the low gain and polarization mismatch, I am only able to work some local contacts with this antenna. In this way, I have been able to have a couple hours of fun this morning without getting wet.
As always, the map of stations worked below. My position is in red. Stations in blue where worked only in 144MHz. Stations in green where worked both in 144MHz and 432MHz.
Yesterday, my father and I hiked to Cerro de San Pedro, SOTA summit EA4/MD-020 (1425m), to work QRP in this month’s national V-UHF contest: Concurso Costa del Sol. Since the forecast for Sunday was rainy, I decided to go up on Saturday’s afternoon. The summit is a short hike from a nearby road. We arrived to the summit around 14:25UTC, so I could work in the contest for a bit more than two hours until we started packing at 17:00UTC before it got too dark.
Activity seemed a little low, although this is not surprising, given that the national RTTY contest was also running at the same time. I also get the impression that there is more activity on Sunday mornings. Nevertheless, my results have been better than in March’s contest. I did fewer QSOs, but got more points and worked more DX. In fact, I could work almost everybody I heard. In the map below, as always, my location is marked in red, the stations in blue are those worked only in 144MHz and the ones in green where worked both in 144MHz and 432MHz.
This weekend, being the first weekend in March, marks the start of the Spanish V-UHF contest season for this year. In previous years, I’ve been operating casually in some of these contests as a portable station. Sometimes I’ve worked on the countryside just outside my town, Tres Cantos, and on other occasions I’ve being enjoying the contest from a summit while doing a SOTA activation. My plan for this year is to participate in all (or almost all) of the contests and try to work from a summit as many times as I can. I pretend to work QRP (5 Watts) always and enter the 6-hour category, which allows working for a maximum of 6 consecutive hours.
Today, I’ve worked in the Concurso Combinado V-UHF. The weather forecast was too windy and cold to stay for several hours on a summit, so I decided to work from the countryside near town. I’ve worked this morning from 09:00UTC to 12:00UTC more or less. The equipment was, as usual, an FT-817ND and an Arrow satellite yagi antenna (3 elements on 144MHz and 7 elements on 432MHz). See below for a map of the stations worked. My position is marked in red, the stations worked in 144MHz only are marked in blue and the stations worked in both 144MHz and 432MHz are marked in green.