©1992 Hamtronics, Inc.; Hilton NY; USA. All rights reserved. Hamtronics is a registered trademark. Manual revised: 05/03/04 2:51:00 PM- Page 6 -
Page 1: ...her convenient tool pick up eyelets and place in the small holes The heads of the eyelets must rest flat against the foil on the etched side of the board then using a small amount of solder solder the heads of the eyelets to the foil The eyelets connect the pc board front and rear foils together at critical locations Be sure to solder all around the heads of the eyelets to provide low impedance b ...
Page 2: ...one before Be sure that the capacitors are as close as possible to the transistor before soldering The capacitors should be installed as neatly as possible over the emitter leads but since the surface is uneven don t expect a flat fit m Install two silicon diodes as shown in diagram In each case posi tion the body of the diode directly resting on the case of the transistor Be sure to observe polar...
Page 3: ...s on the pc board and connect ammeter in series Start by tacking three each 330Ω 1 2W resistors in place for R8 Apply B and look for 50 100 mA idling current for the collector of Q3 Add or subtract resistance as done before to arrive at the correct idling current as done in step c When done disconnect ammeter and solder everything neatly e Connect ammeter in series with B line to pc board to check...
Page 4: ...ce it is tuned into a 50Ω load it should never be tuned again Tuning the input of the PA takes care of matching the PA to the exciter A small plastic tuning tool with a metal bit is required to adjust the mini ature ceramic variable capacitors and the piston capacitors See the A2 Tool in the catalog A larger plastic tool with a screwdriver bit should be used to adjust the mica variable capacitor b...
Page 5: ...rking C1 C10 n a C11 C12 1 20 pF ceramic variable cap pink C13 20 pF disc ceramic C14 n a C15 250 pF metal cased mica C16 n a C17 250 pF metal cased mica C18 compression mica cap 703 C19 1 11 pF piston trimmer C20 01 uF disc cap 103 C21 250 pF metal cased mica C22 47 uF electrolytic C23 n a C24 250 pF metal cased mica C25 n a C26 250 pF metal cased mica C27 C28 33 pF metal cased mica C29 C30 24 pF...
Page 6: ... 1992 Hamtronics Inc Hilton NY USA All rights reserved Hamtronics is a registered trademark Manual revised 05 03 04 2 51 00 PM Page 6 ...
