[amsat-bb] Re: Landwehr 70cm preamp device question?

[i8cvs]

----- Original Message ----- 
From: "Mark L. Hammond" <marklhammond at gmail.com>
To: "Amsat - BBs" <amsat-bb at amsat.org>
Sent: Tuesday, May 31, 2011 8:00 PM
Subject: [amsat-bb] Landwehr 70cm preamp device question?

> Hello All,
> 
> I have an old Landwehr preamp that apparently uses the MGF1402 device
> (does that sound right?).  It's not working so I presume it's the
> GaAsFET.
> 
> Can the MGF1302 be substituted for the original MGF1402?  Or can
> anybody recommend another device for the 70 cm Landwehr?
> 
> I need to do something...
> 
> Thanks in advance!
> 
> -- 
> Mark L. Hammond [N8MH]

Hi Mark, N8MH

The MGF 14......types are MIL versions (Hi-Rel) of the MGF 13..... and
MGF 19..... and so "apparently" the MGF 1402 can be repleced by a
MGF 1302 with minor current adjustement for the lowest Noise Figure

By the way  the MGF 1402 can be directly replaced by a ATF 26550
or MGF 1412 available at 9,30 Euro's from

http://www.rfmicrowave.it/catalogue.php?lang=eng

Look at the Catalog and then click over GaAsFET and FET 

If you contact Franco Rota of the above rfmicrowave company I am
sure that he has few MGF 1402 at stock 

You can pay it with credit card and get the GaAsFET in a few days
by regular post.

73" de

i8CVS Domenico