Recent content by JanH

BBC picture :-)

I am confused too, but I personally saw receiver channel search and live pictures from BBC HD and ITV etc.... My friend did not get anythink on your dish too. Maybe it is at new transponders, frequences. I will go back to man with miracle receiver but it take a time. I definately will try to...

Yes, free BBC and Freesat which means ITV and more. It is about satelite footprint not about crypting. It is free for long time. I saw BBC HD etc yesterday on 80 dish. I will check it this weekend, I must setup dish for it on roof. JH

BBC and english Freesat changed satelite. Here in Prague is full signal on small dish now instead nothing on 150 dish. Try reception, it should be much more better. I do not know actual footprint but looks fine. JH

You stoped your experiments or have you something new? JH

I have no idea how to make differencial amp on microwave. Board design is not so easy. Looks possible to use other polarisation input as input for front element but .... Enclosed are pictures of LNB boards.

Can you write down something more about "Idea" benefits? Thanks JH

Somethink may interesting about new feed design. JH

What is f/D parameter of yours big dishes? I think it is very important for feedhorn design. JH

Thank you Frank, looks designed for offset dishes (not surprising). Round older parabolic dishes have usually about 0.35 and new universal LNB is not too convenient for it. I would like check my offset dishes for f/d if it is right, but roof is with snow now :-) Happy New Year!

Yes :-) Quite new wind in this forum. I am curious about it. I try to find some ideas on internet. There ar may be usefull links about feeds and dishes: _http://www.w1ghz.org/antbook/conf/Multiple_reflector_antennas.pdf _http://www.qsl.net/n1bwt/chap5.pdf In same time I find something...

Doas anybody know what is best f/d for todays ordinary LNB? JH

True. For end of all pipes from all dishes (-: must be something like that. I mean fine adjustment before pipes connected together. I think feritte inside polarizer just shape magnetic field becouse it could not do something on microwave directly. Something like static magnet. For small...

Yes, it is result. I did not think about skew yet. It should be about pipes angels only. How to a bit change skew to adjust system? Ferrite-magnetic polarizer, what I can remeber.