Jim, The complete information on the TRN5074 Tone encode/decode board, along with all other MSR2000 accessories, is contained in the MSR2000 Control and Audio Manual 6881061E40. This large book is still available from Motorola Parts for about $60, and is worth every penny. Call 800-422-4210 to order. The TRN5074 has one reed, and that is why it can either encode during transmit or decode during receive, but not both at the same time, as required for a repeater. For that operation, you need a TRN5073 module.
Regarding the conversion of microfiche to readable copy, that is a problem that I have dealt with for several years. Many large municipal libraries have microfilm reader-printers that also can accept microfiche films, and can produce a hard copy that can then be scanned to create an electronic version in PDF. Another possibility is to find a local Family History Center, which usually has reader-printers on-hand for genealogical researchers. The problem with multiple-step conversions is based upon the fact that microfiche films are at a low resolution, and appear somewhat blurry when reproduced in hard copy, and blurrier still when subsequently scanned. The ultimate quality is significantly inferior to that of a scanned version of an original hard copy, but is certainly better than nothing. 73, Eric Lemmon WB6FLY -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of WA2RJP Sent: Tuesday, March 02, 2010 7:48 PM To: [email protected] Subject: [Repeater-Builder] MSR2000 TRN5074 I have a TRN5074 PL board that I cannot find information on. I know it is a simplex board. If this is installed in a repeater is it used on the RX side or the TX side? Also, does anyone know of an economical way to convert microfiche to PDF or printed form? I have a manual on microfiche but no way to read it. tnx, Jim
