Midland 70-066 Manual page 62

PA Coils – Midland 70-066B – Overview:
Coil Original Action New Replacement
L114 4.5T Remove
L501 3.5T Remove
L502 5.5T Leave in
L503 2.5T Remove
L504 5.5T Leave in
L506 1.5T Leave in
L507 1.5T Remove
L510 10.5T Leave in
L511 1.5T Leave in
L512 0.5T Remove
L513 1.5T Remove
L515 5.5T Remove
L516 5.5T Remove
L517 5.5T Remove
L518 5.5T Remove
L519 5.5T Remove
Note: T = Turns
You may de-solder all coils to be removed in one sitting [eg using a de-soldering station]. You may
wind all new coils or use the old removed coils. If you intend to insert old coils, then, on de-
soldering the coils, mark each old coil with marking pen and label [masking tape tag] attached to
the old coil.
Remove L515, L516, L517 and L518.
Since these coils will not be reused, use side-cutters to cut them in half and then remove the pieces by
heating the joint from the underside and carefully removing the part coil from the top.
Remove L519 and hold with tag. [To be used later on to replace L513.]
Cut 5 of pieces of 0.63mm [22bs] of enameled coated wire, 143mm long. Scrape off enamel at each end
of wire for approximately 5mm. [NOTE: The new Jaycar wire, the enamel can be removed by heat. So
instead of scraping wire, tin ends of wire with a soldering iron.) Wind onto a 5mm drill bit [the drill bit
Midland 70-066 low Band Conversion to 6 Meters: Transmitter PA Part 4 Ver 2.2 21Nov09 Page 3
Notes
7.5T 0.5mm Enamel Wire Synthesizer Board
4.5T old L114
3.5T old L501
2.5T old L503
1.5T old L513
2.5T old L519 cut 1.25mm Enamel Wire
6.5T 0.63mm Enamel Wire
6.5T 0.63mm Enamel Wire
6.5T 0.63mm Enamel Wire
6.5T 0.63mm Enamel Wire
6.5T 0.63mm Enamel Wire