ah.1.71. HW-101-67: Cannot Zero S Meter with the Meter Zero Control
DECEMBER 11, 1980
HW-101 BULLETIN NO: SSB TRANSCEIVER HW-101-67
Change:
- R104 from 47 ohm resistor to 75 ohm resistor [PN 6-750]
- R105 from 47 ohm resistor to 22 ohm resistor [PN 6-220]
Make this change on an as-needed basis.
ah.1.72. HW-101-68: Wiring for Use With The HD-15 Phone Patch
MARCH 12, 1981
HW-101 BULLETIN NO: SSB TRANSCEIVER HW-101-68
Refer to the pictorial and perform these steps:
[[Pictorial shows the part of the PCB area where the C12 and V1 (6EA8) are installed]]
Install a 22 kilohm [PN 6-223] resistor across points A and B.
Install one end of a 2 feet coax cable [PN 343-15], center conductor to foil pad A,
shielded conductor to ground.
Route the coax cable back to the SPARE JACK and make connections.
ah.1.73. HW-101-69: No Power Output in USB Or LSB; Tune Okay
MAY 8, 1981
HW-101 BULLETIN NO: SSB TRANSCEIVER HW-101-69
This may be caused by an open 3.3 megohm resistor [PN 6-335] at R915. Failure of
this resistor causes the ALC circuit to function incorrectly.
ah.1.74. HW-101-70: Sidetone is Too Loud
JUNE 30, 1981
HW-101 BULLETIN NO: SSB TRANSCEIVER HW-101-70
To correct, install a volume control circuit.
Parts needed:
- one 500 kilohm control [PN 10-149]
- one 0.005 uF capacitor [PN 21-27]
- one fiber washer [PN 253-34]
Installation:
HW-101 Service Bulletins Page 155
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