Jeff,
Will send you a copy of the 2 m manual, which includes a schematic. It is probably very similar to the 70 cm version, except for some circuit values.
73s,
Alan WA4SCA
<-----Original Message----- <From: AMSAT-BB [mailto:amsat-bb-bounces@amsat.org] On Behalf Of Jeff <Griffin <Sent: Thursday, June 08, 2017 11:30 AM <To: 'AMSAT-BB' AMSAT-BB@amsat.org <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 < < < < < <_______________________________________________ <Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available <to all interested persons worldwide without requiring membership. Opinions <expressed <are solely those of the author, and do not reflect the official views of AMSAT- <NA. <Not an AMSAT-NA member? Join now to support the amateur satellite <program! <Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb