Heathkit HW 16 Instructions And User Manual Assembly

User Manual: HW-16-Assembly-Manual

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Heathkit_HW-16_svc-bul.txt

September 26, 1968

HW-16 Novice Transmitter

Bulletin No: HW-16-1

Side Tone

When using the HW-16 with a VFO sometimes a partial operation of the sidetone oscillator

takes place due to an increased loading on the bias voltage. This can be corrected by changing

R-69 from a 120K ohm resistor to a 220K ohm resistor [PN 1-29]. Also, the original schematic

shows R-16 as a 4700 ohm resistor which is incorrect. R-16 should be shown as a 5600 ohm

resistor.

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September 9, 1971

HW-16 Novice Transmitter

Bulletin No: HW-16-2

Resistor Failure

Due to repeat failure of a resistor in the field, the following change should be made in all units

being serviced:

CHANGE: R21 22K 1 Watt to 2 Watt [PN 1-11-2].

Pagina 1