[Moon-Net] 2.4M PRIME FOCUS / 2.4M OFFSET/ ALSO SEPTUM FOR 1296

Zdenek SAMEK-OK1DFC ok1dfc at seznam.cz
Mon Nov 21 23:00:56 CET 2016


Agree with Herve, check web page of offset dish which has Hannes OE5JFL. 
There is plenty informations about.

-- 
Zdenek - OK1DFC
www.ok1dfc.com
QRV EME 144 MHz - 10 GHz
WAC 432 - 1296 - 2320 MHz
WAZ #9 - WAS 432 #29
DXCC 432 - 1296 MHz


---------- Původní zpráva ----------
Od: F5HRY <f5hry at wanadoo.fr>
Komu: moon-net at mailman.pe1itr.com
Datum: 21. 11. 2016 22:51:19
Předmět: Re: [Moon-Net] 2.4M PRIME FOCUS / 2.4M OFFSET/ ALSO SEPTUM FOR 1296

"
The effeciency  of the offset dish is always better than a PF dish.

"Why" would need a long discussion, but you will find all you want about in 
several good web pages !   

Usually, offset dishes are "flat" (high f/d, over 0.6). The septum feed is 
more designed for lower f/d (around 0.4).


73,

Hervé F5HRY 



Le 21/11/2016 à 22:00, serge a écrit :
 
" 
Which is best a 2.4M prime focus dish or a 2.4M offset dish? & WHY? What 
kind of septum would you use on both dishes for 1296???

Thank you 

Serge, VE1KG



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" 


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