grammar in English... hi hi hi..
BTW thanks for the articles of Maxwel and I'm viewing the site right now...
73
El 19/02/13 02:14, i8cvs escribió:
- Original Message -
From: "Ing. Pavel Milanes Costa"
To:
Sent: Monday, February 18, 2013 9:29 PM
Subject: [amsat-bb] Re: QF
- Original Message -
From: "Ing. Pavel Milanes Costa"
To:
Sent: Monday, February 18, 2013 9:29 PM
Subject: [amsat-bb] Re: QFHA for SO-50... polarization issue ???
> Thanks to all for the reply to this thread...
>
> Conclusion is that I need RHCP & LHCP switchable
Thanks to all for the reply to this thread...
Conclusion is that I need RHCP & LHCP switchable antennas...
And my antenna is working good... but I'm reading an article Art send me
to improve my knowledge about QFHA...
73 and Thanks to all.
El 16/02/13 23:21, Ing. Pavel Milanes Costa escribió
Hi Pavel,
The issue may not be the antenna - but SO-50.
The antennas are linear - but the received signal strength can vary a lot if
you have just RHCP or LHCP.
During passes here in Copenhagen, Denmark I experience large differences in
signal strength which can be counteracted by changing polarity
Ing. Pavel,
There are a whole series of QFH antennas. 1/4,turn, 1/4 wavelength through 1
turn 1 Wavelength.
Gain at the horizon is determined by the ratio of the axial length in
fractions of a wave length. The best performance I have obtained is a 1
wavelength per side, 1 turn, for good gain at t
