01. 001a Erratic or oscillation in transmit mode while peaking the preselector. SR-2000 and SR-400

02. 002a Impossible to properly neutralize the 10 Metre band SR-2000

03. 003a Design issues that must be corrected to stabelize the 10 Metre band. SR-2000

04. 004a Jammed slug removal simplified

05. 005a 300Mc oscillation in SR-2000

06. 006a Pre-selector capacitor problem in SR-2000 and SR-400 series

07. 007a IERC heat dissipating shield for 6AQ5A See Page 1 Note 6 of restoration. SR-2000 SR-400

08. 008a SX-115 selectivity switch design problem

09. 009b Final tune up procedure. SR-2000

10.

11. 011a 6.5Mc 1st I.F. alignment procedures. SR-2000 SR-400 SR-400A

12. 012b VFO drift notes. SR-2000 SR-400 SR-400A

13. 013a VFO inductor note. SR-2000 SR-400 SR-400A

14. 014a VFO 3rd harmonic note. SR-2000 SR-400 and different for SR-400A

15. 015a VFO gear train and mechanics. SR-2000 SR-400. SR-400A

16. 016a VFO CIRCUIT CHANGE. SR-2000 SR-400 NOT SR-400A

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18.

19. 019a VFO backlash gear tips

20. 020a VFO FMing problem and fixes

21.

22. 022j Capacitors and what you need to know

23. 023a Capacitors, measure and calculate series resonance, inductance, Q, and dielectric absorption.

24. 024a Capacitors, measure capacity variation with voltage change.

25. 025a Miscellaneous capacitor information.

26. SX-117 Info

27. SX-117 Sweep photos.

28. SX-115 Selectivity problem

29.

30. 030b Testing and matching the 8122 (Send a note and I'll forward it to you to verify clarity)

31.

32. Neutralizing the SR-2000 or Grid driven amplifiers Part 1

33. Neutralizing the SR-2000 or Grid driven amplifiers Part 2

34.

35. 035A VFO FMing 60 cycle sidebands (SR-2000, SR-400 cyclone 2, and sr-150 A version)

36. 036A VFO FMing --- SR-150 level "A" radio --- location of the misplaced 5uf cap

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39.

40. 040A SR-2000 drive quick check

41.

42. 042A The 8122 enigma

43. 043A Beam Tetrodes

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46. HA-5 VFO Upgrade information

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56. 056a Hum mitigation note

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60.

61.

62. SR-2000 1971 band switch change

63. SR-2000 and NCL-2000 Final bandswitch design issues and fixes

64. SR-2000 Final band switch photos

65. SR-2000 NCL-2000 enhanced band switch configuration

66.

67. NCL-2000 Band switch

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69.

70. 070a