[amsat-bb] Re: e: Satellite technical question

2012-09-12 Thread Nick Pugh
budget and one of the variables is the system temperature. nick -Original Message- From: i8cvs [mailto:domenico.i8...@tin.it] Sent: Monday, September 10, 2012 4:32 PM To: Nick Pugh; Amsat - BBs Subject: Re: [amsat-bb] Re: e: Satellite technical question Hi Nick , The equivalent noise

[amsat-bb] Re: e: Satellite technical question

2012-09-10 Thread i8cvs
. 73 de i8CVS Domenico - Original Message - From: Nick Pugh quadp...@bellsouth.net To: 'Nick Pugh' quadp...@bellsouth.net; amsat-bb@amsat.org Sent: Sunday, September 09, 2012 8:15 PM Subject: [amsat-bb] Re: e: Satellite technical question I am sorry I did not mean the physical temperature

[amsat-bb] Re: e: Satellite technical question

2012-09-09 Thread Robert Bruninga
Assume a cubesat with a monopole ΒΌ wave antenna at 400 mhz. The satellite is in full sun with a 500km orbit. What is the antenna temperature in full sun and in eclipse? It depends entirely on its color (surface properties). If it black it will get to about 55 farenheight in the sun and to

[amsat-bb] Re: e: Satellite technical question

2012-09-09 Thread Nick Pugh
I am sorry I did not mean the physical temperature What I wanted is the equivalent noise temperature. Thanks for those who replied nick -Original Message- From: amsat-bb-boun...@amsat.org [mailto:amsat-bb-boun...@amsat.org] On Behalf Of Nick Pugh Sent: Sunday, September 09, 2012 10:07