Is this one of the tan colored desk top rigs with a motrac for the radio???
In the motrac, as many know, the tubes are inside the heat sink housing. Those motracs were built, really built, but had tubes. For the times it was the best. Great receiver. I have 4 of the motrac receivers mounted for base use in 19" panel with AC supply. About the only motrac stuff I kept. 73, ron, n9ee/r >From: Eric Lemmon <[EMAIL PROTECTED]> >Date: 2007/07/22 Sun PM 08:14:22 CDT >To: [email protected] >Subject: RE: [Repeater-Builder] Re: old Motorola > >I did a little more digging, and found some additional information. The >C71LHB-3400C station was equipped with a single receiver with "extender" >capability, and had one RX and one TX frequency. It was intended to be used >with 20 kHz channel spacing. The exact split within the 30-50 MHz band is >determined by examination of the receiver and transmitter: > >The TRB1451AF receiver was for 25-30 MHz, the TRB1452AF receiver was for >30-36 MHz, the TRB1453AF receiver was for 36-42 MHz, and the TRB1454AF >receiver was for 42-50 MHz. > >The TTB1251AA transmitter was for 25-30 MHz, the 2AA was for 30-36 MHz, the >3AA was for 36-42 MHz, and the 4AA was for 42-50 MHz. > >The transmitter uses a TLN6824AA Vibrasender, and the receiver uses a >TLN8381A Vibrasponder. > >The receive channel element is a TLN1081A rated at 5 PPM. The transmitter >can use either a TLN1082A element for 5 PPM, or a TLN1087A element for 2 >PPM. > >73, Eric Lemmon WB6FLY > >-----Original Message----- >From: [email protected] >[mailto:[EMAIL PROTECTED] On Behalf Of Eric Lemmon >Sent: Sunday, July 22, 2007 9:28 AM >To: [email protected] >Subject: RE: [Repeater-Builder] Re: old Motorola > >Rich, > >A C71LHB-3400C is a Compa-Station Base Radio for 25-50 MHz, 100 watts, >Private-Line, and DC remote control. The manual that covers it is >6881005E40, which is no longer in print. I am assuming that the model >number tag actually represents the equipment inside. > >FYI, the C71LHB-3400C radio does have tubes in the transmitter. The V101 >driver is a 7551 pentode, while the V102 final power amplifier is either a >5894 or a 8643 dual tetrode. Although some of the innards may resemble >Micor or Motran mobile chassis, the subject station was simply known as a >"Compa-Station." This station was normally in a THN6062A cabinet, which was >22 inches wide, 8 inches deep, and 30.25 inches high. > >73, Eric Lemmon WB6FLY > >-----Original Message----- >From: [email protected] ><mailto:Repeater-Builder%40yahoogroups.com> >[mailto:[email protected] ><mailto:Repeater-Builder%40yahoogroups.com> ] On Behalf Of Rich >Sent: Sunday, July 22, 2007 7:13 AM >To: [email protected] ><mailto:Repeater-Builder%40yahoogroups.com> >Subject: [Repeater-Builder] Re: old Motorola > >C71 LHB 3400 C > >I took a picture of it but can't post it. > > Ron Wright, N9EE 727-376-6575 MICRO COMPUTER CONCEPTS Owner 146.64 repeater Tampa Bay, FL No tone, all are welcome.
