----- Original Message ----- From: "Dale Botkin" To: Sent: Friday, June 21, 2002 1:32 PM Subject: [EE]: RF amp > > Yeah, yeah... no applause, please, just somebody send me a design for a > > VHF (174MHz) RF power amp giving 4W out from 100mW in, costing less than > > $2 for parts in qty. 500, using as little board space as possible and > > running off 13.8VDC or 3-4 AA NiCD batteries... actually I think I have > > something workable, but only testing will tell for sure. I know the feeling. Here's my RF woe: relatively low frequency, but high sensitivity amp having: Operation at roughly 15MHz 30dB of gain 0.5dB noise figure 1-10 kohm input impedance, 50ohm output impedance BW of roughly 100kHz Lesser than -40dBm input Operation off a 15V supply. Here's the clincher: It can't have any magnetic components. As with you, I think I have something that will work, but only more testing will tell, since we're basically forced to use active components well outside their design frequency (the GaAs FET I'm using is 450MHz to 6GHz or so) --Brendan -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads