George, Is this PA in a unified chassis. Mot built base stations with such a PA that was mounted beside the exciter With heat sink sticking out. It used the same PA as in the mobiles.
73, ron, n9ee/r >From: George Sintchak <[EMAIL PROTECTED]> >Date: 2008/04/01 Tue PM 09:48:06 CDT >To: [email protected] >Subject: [Repeater-Builder] Motorola N1254A Power Amp for 2M repeater info > > >Hi All, >I've searched the archives & website for info on this Amp and can't find >anything. It's sort of similar to the N1275A or the N1248A convert-a-com amps >but for a Motorcycle (I was told). It looks like the back end of a MoCom 70 >heat sink. I need more specific schematic or manual info so I can integrate it >into the repeater keying control logic. The Amp is working fine on 147 MHz, >keys up on RF input and makes rated output. I want to use it in repeater >service at reduced (~40 Watts) output, possibly with a small fan for cooling, >as needed. Anyone have any history/info using this Amp? >Model N1254A, 150.8 to 162.0 MHz, Mfg Aug 1977. >Max input 7 Watts, Output 60 Watts. FCC # CC 3303. >Power Amp board TLD8922A uses M9622/23/24 & two M9625's for final transistors. >Output directional coupler/power monitor board, TLD8922A. >Input attenuator (-3 dB) & RF sense keying board, NLD7141A. >Input/Output bypass relays are 23C84103B01. >Any info, links, etc. much appreciated. >Tnx, & 73's >George > > > > > Ron Wright, N9EE 727-376-6575 MICRO COMPUTER CONCEPTS Owner 146.64 repeater Tampa Bay, FL No tone, all are welcome.
