Hi Victor,
Thanks.
I've just done some CW QSOs with the new FETs, with DF5QG, G3KEV, G3XIZ,
DK6SX/p and DD7PC :-)
Now in this moment the first WSPR-15 transmission is running. The PA's
dimensions are minimised, it has no real heat sink, just an aluminium
plate. Now i'm using an external cooling with a fan. I think it should
be no problem now.
Good luck for your tests. Unfortunately WSJT-X does not work on this PC
so i can't give you a report. Hopefully someone is watching for us at
all ;-) Soon we will see.
73, Stefan/DK7FC
Am 04.02.2013 19:55, schrieb [email protected]:
Good luck with your repairs Stefan,I am on the air at 1605Hz audio 25% Hope
the fets will last!
73
Victor
-----Oorspronkelijk bericht-----
Van: [email protected]
[mailto:[email protected]]Namens Stefan Schäfer
Verzonden: maandag 4 februari 2013 18:00
Aan: [email protected]; Joe Taylor; Vasily Savchenko; Garry
and Linda Hess; Douglas D. Williams; Andy - KU4XR
Onderwerp: LF: Re: Testing WSPR-15 on 630m
Oh, the PA seems to be damaged. This may come from the rain which
detunes the antenna and rises the PA losses. Furthermore it is a 15
minute "key-down" transmission and some of the thermal time constants
seem to be well below 15 minutes ;-)
I will have to repair the PA. Back on air in 1 hour or so.
73, Stefan/DK7FC
Am 04.02.2013 17:29, schrieb Stefan Schäfer:
Dear LF/MF group,
This night i would like to test WSPR-15 on 630m, for the first time.
The condx seem to be sub-optimal, anyway, just for the fun.
I just changed the TX frequency to (474.2 + 1.615) kHz and will start
in 50% mode beginning 16:30 UTC.
I'm still running the small 12V PA at about 50W RF power. It's rainy
here and the losses are quite high, anyway...
Reports are very apprechiated.
Vy 73, Stefan/DK7FC
-----
Geen virus gevonden in dit bericht.
Gecontroleerd door AVG - www.avg.com
Versie: 2013.0.2897 / Virusdatabase: 2639/6081 - datum van uitgifte:
02/04/13
|
