Vern, It's just as easy as it looks. Remove the cover that is over the IF/mixer board. Under that shield, towards the outside of the chassis is where the preamp mounts. You may have to remove a shield that is covering the input to the helical resonator assembly. Using the screws removed from that small shield or any other #6-32 x 1/4" screws, mount the preamp to the casting. Attach the power wire to the pin on the IF/mixer board and replace the big shield. Flip the radio over. Plug the Rx connector from the front of the chassis onto the input connector of the preamp. Plug the output cable of the preamp onto the input of the helicals.
Now for the fun part: Tune. Using an appropriate tool, tune the slug in the small copper can for best sensitivity. That's it pretty simple. Scott Scott Zimmerman Amateur Radio Call N3XCC 612 Barnett Rd Boswell, PA 15531 ----- Original Message ----- From: <[EMAIL PROTECTED]> To: <Repeater-Builder@yahoogroups.com> Sent: Monday, November 26, 2007 11:32 PM Subject: [Repeater-Builder] MASTR II Mobile Preamp > Does anyone know where I can find instructions for > installing a UHS preamp into a MASTR II and how to tune > it? I looks pretty simple but I want to make sure I do it > right. > > Thanks, > Vern > > > > > > Yahoo! Groups Links > > > > > > -- > No virus found in this incoming message. > Checked by AVG Free Edition. > Version: 7.5.503 / Virus Database: 269.16.7/1152 - Release Date: > 11/26/2007 10:50 AM > >
