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- My Satellite Setup
- A little less analogue, and a lot more crap.
- My Location
- UK
The design of a Ku band depolariser has not advanced much in 20 years, maybe this forum and members can come up with something groundbreaking.
Channel Hopper said:You can, but you would need to build a simple square wave generator with variable control. About 20 components and two hours work, unless you go for a flip-flop design using an integrated circuit.
A circular depolariser system will always lose some signal when viewing the linear channels, really the only way is to fully remove it between satellites.
macssam said:+
please provide some building instruction for a
"circular depolariser" system ...
macssam said:after glueing aluminum strips to the dielectric plate
which came with the Ku/C-Band lnb
as in the instructions I found here
I don't get any signals anymore
with the original dielectric plate most signals cone
macssam said:is there a non servo Ku C-Band feed horn
with all polarity lnb's
which can be hooked up to a DM800
so I can forget about the dielectric plate issue
macssam said:is there a non servo Ku C-Band feed horn
with all polarity lnb's
which can be hooked up to a DM800
so I can forget about the dielectric plate issue
macssam said:is there a non servo Ku C-Band feed horn
with all polarity lnb's
which can be hooked up to a DM800
so I can forget about the dielectric plate issue
macssam said:is there a non servo Ku C-Band feed horn
with all polarity lnb's
which can be hooked up to a DM800
so I can forget about the dielectric plate issue
Vipersan said:Hi friends ..
Still experimenting with this dielectric plate ..I was lying in bed last night when it occurred to me that I might be able to part polarize the circular 'signal cloud'/transmission _outside_ the lnbs thoat & just above the scalar rings..
This morning I cut a larger 'T' shaped piece of polythene cutting board ..
and placed this in the open throat of the pauxis..
To my amazement ...the signal/quality improved dramatically ..
ERTU 1 west now showing
Signal 31 %
Quality 45 %
All pictures are now pixel free and totally stable under a cloudy sky ..
Now to find a sheet of PTFE/TEFLON... ;)
rgds
VS
Vipersan said:Hi Afry..
The large T shaped plate is cut from a single piece of polyethylene cutting board ...
..the kind of thing sold for chopping vegetables or meat in the kitchen...
The section of the T which fits inside the LNB throat is 62mm wide by 85mm long..
The top part of the T which stands outside the lnb and bisects the scalar rings of the feed plate is 62 mm deep by 124 mm wide
The whole plate is approx 7.5 > 8mm in thickness
In my case the surface is slightly rough ...it was made this way to prevent it sliding when used for its origional purpose as a chopping board.
rgds
VS
more detail please... what is that ?Satcom1 said:Simply by adding a metal object to the flat Scalar claims of 15% SQ improvement.
Doktorofsat or anyone else, can this be confirmed with your testing?
The object must be at the 3 o'clock position, when installed on the lnbf.