Posts tonen met het label OQRP. Alle posts tonen
Posts tonen met het label OQRP. Alle posts tonen

zondag 30 december 2012

Inverted Vee repaired

After the Inverted Vee was damaged in a storm, I found Walle PE2WJW willing to go onto the roof. For a week we were looking at the whether. Yesterday the "window for dry whether" was width enough to go onto the roof. Walle first recovered the feeding ribbon and top part of the old Inverted Vee from the roof. I attached new wires (indoors) and Walle installed the new antenna on the roof again. It was dark already, when the job was done.

That evening I listened for a short while. I did hear some activity, but the signals were weak.
The next day I made a QSO with 360 mW with Laszlo HA6NL in the OQRP contest.
Good for more than 1000 Miles per Watt.

I find it difficult to compare antenna's.
Before the the repair, I made a few QSO's in the Croatian CW (Click) on the remaining wire of the damaged antenna. At that time the signals were very strong.
I just looked in the Log and found out, that I also made a QSO with HA6NL with in the Croatian CW.
Laszlo's signal was very strong, 10 dB over S9, so I used 36 mW. hi

So I think that the new antenna is working well, but that the difference is caused by the propagation.

zondag 3 juli 2011

30th OQRP contest with VLP

Homebrew
I participated in the 30th OQRP contest in the VLP category (less than 1 watt) and had fun with my homebrew 7 MHz CW transceiver.
The TRX is the HM7, that I built many years ago. Click on the HM7.
This rig comes from "Solid State Design for the radio amateur" page 214...218.
The antenna is an Inverted Vee.

AGC
My homebrew transceiver has no automatic gain control (AGC), which is a real pain in the ears, when the received signal is strong, such as RST 599 or even more.
In this contest I experienced again, that in a receiver with manual gain control, strong signals are very strong in the headphones.
With this receiver you are always too late with strong signals.

Reports
The report in the OQRP contest is RST, serial-no./ category e.g. 559001/VLP. This makes more fun than the usual reports with 599. You must be very keen on the received RST. All QRP stations that I met, gave a RST lower than 599. The QRO station gave 599.

My received RST
I received 519 (1), 449(1), 559 (3), 569 (1), 579 (3) 589 (1) and 599 (3)
The signal reports from 519 to 589 are a real RST.
Somtimes the other station was much weaker than QRM from other stations, but still the exchange was easily copied.

DXCC
I made only 14 QSO's. My DXCC score: DL (11), OK (1), S5 (1) and SM (1).

On sunday we went to "Fort bij Vechten" to visit the fort, during the open day.