[amsat-bb] Landwehr pre amp

Jeff Griffin jeff_griffin at comcast.net
Thu Jun 8 18:49:32 UTC 2017

That’s odd. I googled the same exact phrase(ALMOST) and didn’t get a hit on this site. This is the page I was looking for. W7RF has some remaining part’s for the Landwehrs. I bought some  5 pin power connectors off of him several years ago. Thank you W3AB, I guess J  


73 Jeff kb2m


From: GEO Badger [mailto:w3ab at yahoo.com] 
Sent: Thursday, June 8, 2017 12:43 PM
To: Jeff Griffin; 'AMSAT-BB'
Subject: Re: [amsat-bb] Landwehr pre amp


Always talk to Dr Google first.

Landwehr mast mounted preamps <https://www.radiodan.com/ted_stuff/landwehr.htm> 



Landwehr mast mounted preamps




Ciao baby, catch you on the flip side.    


Time flies like an arrow, fruit flies like a banana.



From: Jeff Griffin <kb2m at arrl.net>
To: 'AMSAT-BB' <AMSAT-BB at amsat.org> 
Sent: Thursday, June 8, 2017 9:31 AM
Subject: [amsat-bb] Landwehr pre amp


Awhile back I  purchased a set of Landwehr Preamps, for 2 and 70cm. I just

got around to setting them up in my station in NJ. Both are DOA, so now I'm

trying to fix them.  Does anyone know where I can get a schematic, or anyone

that can fix these that has the parts. Both units relay are function 100%,

issue is with the rx on both units. The 70cm one shows hi SWR and low RX,

the 2m one no preamp, or low RX. I'm sure both will need preamp chips, I'm

not sure these are available anymore on the open market..




73 Jeff kb2m






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