2: INDEX:
1. Introduction to Project: ………………………………………………………………. 2
2. Index . . . . . . . . . . . . . . . . . . . . . . . 3
3. Files associated with Project 4
4. Philips FM92E Background: ……………………………………………………….. 6
5. Basic specifications: . . . . . . . . . . . . . . . . . . 6
6. A little History: ………………………………………………………………………. 7
7. Just a few notes, hints, tips and tricks which don't fit anywhere else: . . . . 8
8. Cleaning up an FM-900 to make it look good. ……………………………………. 10
9. 6 Meter FM92E FM Frequencies . . . . . . . . . . . . . . 11
10. Equipment Supplied: ………………………………………………………………. 13
11. Equipment Required: . . . . . . . . . . . . . . . . . . 14
12. Initial Check: ………………………………………………………………………….. 15
13. Faults: . . . . . . . . . . . . . . . . . . . . . . . 16
14. Speaker Socket Change: …………………………………………………………… 17
15. Initial Pull-Apart: . . . . . . . . . . . . . . . . . . . . 18
16. Board Layouts: ………………………………………………………………………. 18
17. EPROM Change: . . . . . . . . . . . . . . . . . . . 20
18. Using the Club’s De-soldering Station: ……………………………………………. 23
19. VCO Change: . . . . . . . . . . . . . . . . . . . . 23
20. VCO Tune: ……………………………………………………………………….. 35
21. Rx RF Amp/Mixer Change: . . . . . . . . . . . . . . . . 37
22. Rx RF Amp/Mixer Tune: …………………………………………………………… 48
23. PA Changes: . . . . . . . . . . . . . . . . . . . . 49
24. Remove the annoying beep from the FM92E: …………………………………….. 61
25. FM92R Source Listing: . . . . . . . . . . . . . . . . . 62
26. Disable "scan inhibit" with microphone off-hook: …………………………………. 62
27. Emergency "umbilical cable" replacement: . . . . . . . . . . . 62
28. Fixing "tinny" transmit modulation by adjustment: …………………………….. 63
29. Fixing "tinny" transmit modulation by microphone modification: . . . . . 63
30. Fixing "tinny" transmit modulation by microphone modification: ……………… 63
31. FM900 12 Digit Hardware codes: . . . . . . . . . . . . . . . 64
32. FM92E Rear Connectors: …………………………………………………………… 64
33. 15 pin cable: . . . . . . . . . . . . . . . . . . . . . 64
34. Philips FM 900 Series Service notes: ……………………………………………. 65
35. Making my FM92 sound better: (transmit audio) . . . . . . . . . . 67
36. Tuning up an FM900: ………………………………………………………………. 68
37. FM900 Field Personality Programmer (FPP) Guide: . . . . . . . . . 69
38. FM92E Test EPROM 68-88 Mhz Channel verses Frequency List: ………….. 76
39. Repairing FM92 VCOs . . . . . . . . . . . . . . . . . . 77
40. 6 Meter Antenna: …………………………………………………………………… 78
41. Weekly Procedures: . . . . . . . . . . . . . . . . . . . 79
42. Philips FM91 Schematic Diagrams ………………………………………………… 82
43. 6 Meter Repeaters: . . . . . . . . . . . . . . . . . . . 83
44. Version Amendments: ……………………………………………………………….. 85
Philips FM92E Conversion to 6 Meters: Version 3.9 Page 3
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