[NLRS] 5.7 & 10 gigs

[Donn Baker]

Hi again, Jon.

Did a bit of looking.  The Directive Systems dual band feed and the W5LUA
dualk band feed are the same.  More importantly, they are for a .3 - .45
f/D dish.  The DSS dishes are about .7 f/D.  While it'll work on the DSS
dishes, its a LONG WAY from optimial.  

Check out W1GHZs Online Antenna Book (<www.w1ghz.cx>) then scroll down to
the Book icon.  There may be something there.  Also, look for Paul's
antenna design software (HDL_ANT, I think).  

You may have to look at the 10/24GHz dual band that he has on his web page,
and then use HDL_ANT to design a similar feed for 5/10GHz.  You'll need to
add a conical horn for the 5 GHz portion.  This is not too hard: the
problem, of course, is that it may require machining the taper for the
10GHz section and maybe even the conical horn for the 5 GHz section.

73 Donn
WA2VOI/0

At 18:40 02-11-04 EST, W0ZQ at aol.com wrote:
>Anyone have a 5.7 & 10 GHz dual band feed  for the "standard" 19" offset
dish 
>?   How about a lazy Suzan  mechanical design to swing one monoband feedhorn 
>out and the other in  with  minimum time & effort ?
>
>73, Jon
>W0ZQ 
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