Ramsey Electronics FM10C Manual page 15

RF AMP
44. Install R10, a 270 ohm resistor (red-violet-brown).
45. Install C22, a .001uF ceramic capacitor (marked 102).
46. Install R11, a 10K ohm resistor (brown-black-orange).
47. Install Q1, the transistor marked 2N2570. The flat side must be
placed as shown on the PC board. Mount it as close to the board as pos-
sible
48. Install R12, a 200 ohm 1/2 watt resistor (red-black-brown).
49. Install C25, a .001uF ceramic capacitor (marked 102).
RF Output
50. Install C23, a .001uF ceramic capacitor (marked 102). Make sure to
use the two outside holes in this pattern.
51. Install C24, the last .001uF ceramic capacitor (marked 102).
52. Install J4, the PC mount "F" connector. This is another part that you'll
want to seat correctly before soldering or it won't fit through the back
panel properly. Be sure to solder the ground connections well. .
53. Install R13, a 1K ohm resistor (brown-black-red).
54. Install L5, a 13 turn air core coil. Just as with the other inductors
polarity is not an issue.
55. Install ANT1, a telescoping antenna. Insert the screw from the bot-
tom side of the circuit board and tighten the screw using a #1 Phillips
screwdriver. The head of the screw should now be soldered to the pad
on the board. This allows the antenna to be remove easily without open-
ing the case.
56. Install U1, a BA1404 IC. Carefully insert the FM modulator IC into
the socket, taking care that all 18 pins get into their proper holes. The
orientation of the notched end, as shown on the Parts Layout Diagram is
critically important.
Battery Holder
57. Install the battery hold-down clamp, using a scrap component lead
looped through the PC board holes. Solder the pads on the board first
then square-up the clamp to the board and solder it to the looped wire.
58. Install the battery snap connector (without battery); The red wire is
positive and the black wire is negative.
FM10C 15