I found several of the 2-Meter range TLD-1692 MICOR 100-watt PAs on ebay, rec.radio.swap, etc. over the last couple years. I bought three them for myself as spares since I have two - 2-Meter repeaters that use them. I converted four or five of the high-split range TLD-1693s into TLD-1692s over the years, by changing all of the "M" or "H" range parts shown in the service manual to those values for the "L" (low) range.
Whenever I'd be on a business trip near Motorola in Schaumburg, IL, I'd make arrangements to FAX them a parts list of things I needed, then just stop by to pick them up. I still have one more set of parts to do one more 2-Meter conversion, but now that I have some factory spare PAs in the correct frequency split, I probably won't bother. It involves nearly stripping the original PA circuit board to change out many of the caps, coils, resistors, transformers, both trimmer caps, etc. and replacing them with the correct 2-Meter "L" range parts. Back about 12-14 years ago when I bought this last set of MICOR PA replacement parts, they probably cost around $150-175 total, with the most expensive parts being some of the special transformers and the two trimmer caps. I don't think that many of the parts are available any longer from Motorola, but some of the parts (like the transformers) have an equivalent replacement as MSR-2000 VHF PA part numbers. You just need both manuals (MICOR and MSR-2000) to compare schematics, circuit board layouts, and part numbers side by side before you contact Motorola to check on parts availability. LJ Original Message: ----------------- From: Kevin Berlen, K9HX [EMAIL PROTECTED] Date: Thu, 20 Jan 2005 19:37:46 -0500 To: [email protected] Subject: Re: [Repeater-Builder] Micor PA question <html> <body> Kevin,<br><br> As others have said, the model# is key to knowing what to expect. My personal experience is that if you are in the 146 or 147 MHz range you may be OK, but if you are in the 145MHz range, you will probably need to convert your amp to the low range. My TLD-1693 amp would only make about 20 watts and had higher than normal current draw when attempting to run it at 145.230. The TLD-1692 amps are out there, but are somewhat hard to find. Good luck and 73,<br><br> Kevin, K9HX<br><br> At 10:38 AM 1/20/2005, you wrote:<br><br> <blockquote type=cite class=cite cite=""><font size=2>I have a 110 watt PA from a micor base, that was on the low end of the 150mhz range. Am I correct in assuming this should tune up fine on the 2 meter band? Also, I believe these require about 400mw drive but I want to confirm it. I think I have the schematics for this someplace but have to dig them up if needed. TIA to all.<br> </font><br> <font size=2>Kevin</font><font face="Times New Roman, Times"><br> </font><font size=2>K2KMB</font><font face="Times New Roman, Times"> <br> </font><br><br> <tt><br><br> </tt><br><br> <br> <hr> <tt>Yahoo! Groups Links</b> <ul> <li>To visit your group on the web, go to: <li><a href="http://groups.yahoo.com/group/Repeater-Builder/";> http://groups.yahoo.com/group/Repeater-Builder/</a> <li>� <li>To unsubscribe from this group, send an email to: <li> <a href="mailto:[EMAIL PROTECTED] e"> [EMAIL PROTECTED]</a> <li>� <li>Your use of Yahoo! Groups is subject to the <a href="http://docs.yahoo.com/info/terms/";>Yahoo! Terms of Service</a>. </ul></blockquote> <br><br> <tt> <BR> <BR> </tt> <br><br> <!-- |**|begin egp html banner|**| --> <br> <tt><hr width="500"> <b>Yahoo! Groups Links</b><br> <ul> <li>To visit your group on the web, go to:<br><a href="http://groups.yahoo.com/group/Repeater-Builder/";>http://groups.yahoo.c om/group/Repeater-Builder/</a><br>� <li>To unsubscribe from this group, send an email to:<br><a href="mailto:[EMAIL PROTECTED] e">[EMAIL PROTECTED]</a><br>� <li>Your use of Yahoo! Groups is subject to the <a href="http://docs.yahoo.com/info/terms/";>Yahoo! Terms of Service</a>. </ul> </tt> </br> <!-- |**|end egp html banner|**| --> </body> <br> </html> -------------------------------------------------------------------- mail2web - Check your email from the web at http://mail2web.com/ . Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
