September 26,

1968

HW-16                                                                    

                                    Bulletin No:

Novice Transmitter                           		            

           HW-16-1



                                                                   Side

Tone



When using the HW-16 with a VFO sometime 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 hom 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.

--------------------------------------------------------------------------------------------------------------------

			September 9, 1971

HW-16 						Bulletin No:

Novice Transmitter					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].