Heathkit HW-100 - Ah.3.Sb-101 Service Bulletins; Ah.3.1.Sb-101-1 D: Driver Oscillates on 40 Meters; Ah.3.2.Sb-101-2 D: Switch Action Improvement; Ah.3.3.Sb-101-3 D: Improper Tuning

ah.3. SB-101 Service Bulletins
ah.3.1. SB-101-1D: Driver Oscillates on 40 Meters
June 12, 1967
SB-101 Bulletin No:SSB Transceiver SB-101-1D
Remove C-924 [.02 disc capacitor] from across 150K ohm resistor & delete from circuit.
ah.3.2. SB-101-2D: Switch Action Improvement
November 1, 1967
SB-101 Bulletin No:SSB Transceiver SB-101-2D
DELETE: (2) 253-67 (2) WASHER, .186OD, .054 THICK (1 EA FOR 100-445)
ADD: (2) C253-67 (1) " " " "
" (FOR 100-445)ADD: (2) B255-79 (1)SPACER, 1/8 SHOULDER, THREADED
ADD: (2) A263-7 (1)FOOT, FELT, 1/8" THICK
DELETE:(4) 266-91 (1)ACTUATOR, SLIDE SWITCH
ADD: (4) 266-97 (1) " " " "
ah.3.3. SB-101-3D: Improper Tuning
NOVEMBER 1, 1967
SB-101 Bulletin No:SSB Transceiver SB-101-3D
Delete: [2] 26-109 [2] Variable Capacitor, 2 Sect. P.C. Mtg
Add: [2] 27-122 [2] Variable Capacitor, 2 Sect. P.C. Mtg
Delete: [4] 85-131-1 [1] PC Board, RF Driver Mixer [85-131 Screened 605-1225]
Add: [4] 85-131-2 [1] PC Board, RF Driver Mixer [85-131 Screened 605-1616]
Reason for change: To correct tuning trouble.
ah.3.4. SB-101-4D: Improper Tuning on 40Meters
APRIL 18, 1968
SB-101 Bulletin No:SSB Transceiver SB-101-4D
Description of Change:
SB-101 Service Bulletins Page 167