All, The 162 to 174 MHz. Micor receiver is the same as the 142 to 150.8 MHz. unit with the exception of one inductor, L112, near the Mixer FET and the front-end helicals. If you don't have any 132 to 150.8 MHz. helicals, may I suggest this: http://www.repeater-builder.com/rbtip/coilinstructions.html http://www.repeater-builder.com/pix/micor222fig2.jpg
The LO capacitors are the same in the 162 to 174 and 142 to 150.8 MHz. units, so they won't need changed. (Unless the receiver is a TLD XXX3), then you'll need to do this: http://www.repeater-builder.com/rbtip/sensitronRX.html Then, all you need is a High-Side injection channel-element on your 2M frequency. Kevin Custer Eric Lemmon wrote: > Brian, > > I will defer to Kevin, Steve, Mike, and others who have far more experience > in performing this conversion than I have. > > 73, Eric Lemmon WB6FLY > > > -----Original Message----- > From: [email protected] > [mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED] > Sent: Friday, May 18, 2007 3:58 PM > To: [email protected] > Subject: Re: [Repeater-Builder] [Motorola-Micor] Looking for info on a Micor > Special > > Eric and Chris: > > It was my intention to strip out the 163.xx DVP receiver, remove the > Helicals, drop in 146.xx Helicals and go for it ...... OK I think there's an > inductor and/or a resistor that's need to be changed ...... but that would > leave the IF strip intact? Right? > > Brian, WD9HSY
