[NLRS] 902 Dish and feed

[Donn Baker WA2VOI]

Hi Scott,
Good show.  To first approximation, expect 18dB gain out of your 4' dish at
902MHz.  That's with 50% efficiency (which is where the approximation comes
in).

While I am going to CSVHFS, 4' is a bit big... sorry.  Now if it were an
18" dish....  (But thats <10dB gain at 900... you can do that with short
loop yagi.)

73 Donn
WA2VOI/0 EN35ja

At 17:24 16-06-07 +0000, Scott wrote:
>
>
>If anybody cares...I finished up testing the 4 foot dish and feed (with 
>the funky adapter we turned out on a lathe) and it looks like it is 
>working OK.  Measured the return loss (with the dish setting on the 
>ground, pointed up about 20 degrees from horizontal and with horizontal 
>polarization) at about 16 dB, so I think that puts the SWR at about 1.3 
>to 1, so I'm happy with that.  Now...on to the homebrew mount for Field 
>Day.  Won't know the gain of the beast probably until Aurora 2008 unless 
>someone wants to truck it to Central States!  (Would it fit in the 
>overhead bin on a jet?)  ;)
>
>So, if I can get a suitable mount made up, I should be ready to play 902 
>soon (portable with 10W and from home with 150W or so)
>
>-- 
>Scott N0EDV
>http://corbenflyer.tripod.com/
>Gotta Fly or Gonna Die
>Building RV-4 (Super Slow Build Version)
>
>_______________________________________________
>NLRS mailing list
>NLRS at mailman.qth.net
>http://mailman.qth.net/mailman/listinfo/nlrs
>
>