[amsat-bb] Devices in Icom preamps AG-25 AG-35

Hello all,

We either had two bad preamps to begin with, or they became casualties during transport to K4T, but regardless--the Icom preamps we took appear to have bad GAsFET devices in them.

Can anybody tell me what is the device in each unit (AG-25 and AG-35)? And are they something a skilled ham can reasonably replace?

Specific suggestions for a parts source will be appreciated, too.

73,

Mark L. Hammond [N8MH]