Re: [amsat-bb] Dish Antennas for S Band

["John Stephensen, KD6OZH" <kd6ozh@xxxxxxx>]

The gain is proportional to the surface area and the average (50 %
efficient) 24" diameter solid dish will provide 20 dBic of gain with a CP
feed. Subtract 3 dB for the linearly-polarized BBQ style dish.

73,

John
KD6OZH

----- Original Message -----
From: "Duffin, Jon" <jduffin@dbxpro.com>
To: "'amsat-bb@amsat.org'" <amsat-bb@AMSAT.Org>
Sent: Thursday, 16 August 2001 14:19 UTC
Subject: [amsat-bb] Dish Antennas for S Band


> I am currently using a 30 turn helix (theoretically 17dBic gain) for S
band
> reception for AO-40 with moderate success.  I am thinking about taking the
> next step and possibly going with some sort of dish solution.  So, my
> question is:  what is the thereotical gain for the following dishes at
> 2401MHz?
>
> 18" DSS style dish
> 24" DSS style dish
> Primestar dish (don't know the exact size -- but I guessing it would be
24"
> x 36" oval shaped)
> Myers BBQ style dish
>
> I would probably construct a circular style feed for these and use my DEM
> preamp and 2880 converter.
>
> Comments?
>
> Thanks,
> Jon
> KK7RZ
>
> ----
> Via the amsat-bb mailing list at AMSAT.ORG courtesy of AMSAT-NA.
> To unsubscribe, send "unsubscribe amsat-bb" to Majordomo@amsat.org
>

----
Via the amsat-bb mailing list at AMSAT.ORG courtesy of AMSAT-NA.
To unsubscribe, send "unsubscribe amsat-bb" to Majordomo@amsat.org