VCO Ceramic PCB Removed above:
4: Once the board is removed from the module, with a smaller soldering iron, de-solder the coils from the board,
then with a pair of long nose pliers, gently wobble the coil formers free of the board.
Note:
That the coils are normally glued down.
When the 2 formers are free, take the old "main" coil and fit it into the "offset" position, then strip the old
Offset coil [remember which way the old offset coil was wound].
If the
IF frequency is 21.4 MHz
then wind a new one of
8 turns
using wire [
150 mm
of enamel coated wire,
0.63mm] [or 146mm of Leon’s enamel coated wire, 0.??mm] of the same size (or as near to it as possible);
plus wound in the same direction as the old offset coil. This coil needs to be wound tightly and be aligned as
per the old one, you may have to distort the ends of the coils to fit them back through the holes. You should
remove the enamel coating on the wire and "pre-tin" the wire with solder before fitting, this will ensure a good
electrical connection for the coils.
If the
IF frequency is 10.7 MHz
then wind a new one of
8 turns
using wire [
150 mm
of enamel coated wire,
0.63mm] [or 146mm of Leon’s enamel coated wire, 0.??mm] of the same size (or as near to it as possible);
plus wound in the same direction as the old offset coil. This coil needs to be wound tightly and be aligned as
per the old one, you may have to distort the ends of the coils to fit them back through the holes. You should
remove the enamel coating on the wire and "pre-tin" the wire with solder before fitting, this will ensure a good
electrical connection for the coils.
Philips FM92E Conversion to 6 Meters: Version 3.9 Page
29
Содержание FM92E
Страница 19: ...Synthesiser Board Philips FM92E Conversion to 6 Meters Version 3 9 Page 19 ...
Страница 26: ...Receiver Board Philips FM92E Conversion to 6 Meters Version 3 9 Page 26 ...
Страница 50: ...FM91E PA Board above view Philips FM92E Conversion to 6 Meters Version 3 9 Page 50 ...
Страница 52: ...Philips FM92E Conversion to 6 Meters Version 3 9 Page 52 ...
Страница 54: ...Philips FM92E Conversion to 6 Meters Version 3 9 Page 54 ...
Страница 55: ...Philips FM92E Conversion to 6 Meters Version 3 9 Page 55 ...
Страница 79: ...40 6 Meter Antenna Philips FM92E Conversion to 6 Meters Version 3 9 Page 79 ...
Страница 82: ...31st July 2007 Continue with week 12th June 2007 Philips FM92E Conversion to 6 Meters Version 3 9 Page 82 ...
Страница 83: ...42 Philips FM91 Schematic Diagrams Philips FM92E Conversion to 6 Meters Version 3 9 Page 83 ...