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Radio info and mods are for informational uses only.If you don't know what your doing don't open that cover and turn the "coils,pots,pods,screws" or clip diodes etc unless you have a clue about what its going to do.Some will like these mods some won't its a preference thing.

Cobra 29 ltd,Uniden 76,78.
Modulation D-24, VR-4
TX Tune Squeeze L-13,L-14 up a turn,L-17
Do not adjust L-11 (TVI trap)

Instant 9 to 19 clip D-32 (channel will still display 9 but TX/RX on 19 )

Swing kit
Build your own and save!
parts: 1 100 uf 35V electrolytic capacitor, 1- 1 watt 33 to 75 ohm resistor. resistance value will determine dead key.

Install : remove JP 32 replace with cap + side towards back of radio then solder the resistor across the leads on the underside of the circuit board.

Check the deadkey and swing on a meter with pep scale.if the deadkey is too low replace with a lower value resistor.

Handy mod for running amps with low deadkey requirements
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Cobra radio adjustments 
 

7 PLUS VR4 or CUT D8 L11, L12, L13
10 PLUS VR4 or CUT D8 L11, L12, L13
18 LTD CUT D13 or CUT R84 L7, L6, L5
18 PLUS CUT D12 L 7
18 RV RV501 or CUT D502 L304, L305, L306
19 CUT D11 L5, L8, L9
19 GTL VR6 or CUT D9 L15, L16, L17
19 LTD VR6 or CUT D9 L15, L16, L17
19 LTD CLASSIC VR4 or CUT D7 L7, L8
19 M REMOVE C73 L8, L5, L3
19 PLUS RV501 or CUT C511 L305, L306
19 PLUS (Plastic Case) RV4 or CUT D8 L11, L12, L13
19 XS CUT D105
20 B&K CUT CD20 & CD21 T11, T10, C60
20 LTD CUT D13
20 PLUS RV501 or CUT C511 L305, L306
20 PLUS (Plastic Case) RV4 or CUT D8 L11, L12, L13
21 REMOVE C105 & C106 T11, T10, C60
21A (Old) CUT D24 L9, L8
21 GTL VR5 or CUT D9 L13, L10, L9, L8
21 LTD VR5 or CUT D9 L13, L10, L9, L8
21 LTD CLASSIC VR4 or CUT D7 L7, L8
21 PLUS CUT 1.5K res. next to TR34 L12, L10
21 X VR207 or CUT D212 L212, L214
21 XLR RT4 or CUT D13 L15, L12, L11
23 PLUS RV501 or CUT D502 L304, L306, L307
25 GTL VR5 or CUT D9 L13, L10, L9, L8
25 LTD VR5 or CUT D9 L13, L10, L9, L8
25 LTD CLASSIC VR5 or CUT D9 L10, L9, L8
25 PLUS CUT 1.5K res. next to TR34 L12, L10
26 CUT D24 L7, L8
28 A CUT CD28 & CD29 T12, L2, L5
29 A (OLD) CUT D24 L7, L8
29XLR VR5 or CUT D14 L15, L12, L11
29 GTL VR4 or CUT D11 L14, L13, L12
29 LTD VR4 or CUT D11 L14, L13, L12
29 LTD CLASSIC VR4 or CUT D11 L14, L13, L12
29 LTD GOLD VR4 or CUT D11 L14, L13, L12
29 PLUS CUT D20 L12
31 PLUS CUT D19 L13, L12, L11
32 XLR CUT CD11 & CD12 L5, L3
33 PLUS VR4 or CUT D17 L11, L9
39 LTD (S.O.S.) RV1
40 PLUS RV104 or CUT D203 L305, L306
40 X RV201 or CUT D203 or C215 L304, L305, L306
41 PLUS VR4 or CUT D21 L19, L20, L21
45 XLR VR105 or CUT D119 L113, L109
46 XLR VR105 or CUT D119 L113, L109
47 XLR VR105 or CUT D119 L113, L109
50 XLR VR5 or CUT D119 L109

55 XLR VR5 or CUT D119 L109
62 XLR VR3 or REMOVE C67 L16, L15, L12
63 GTL VR3 or CUT D11 L11, L10, L9
66 GTL VR2 or CUT D4 L14, L15, L17
66 LTD CUT R54
67 LTD RV4 or CUT D212 L306, L307, L308
77 X VR207 or CUT D212 L211, L212, L214
78 X VR6 or CUT D9 L11, L12, L15
85 REMOVE Q17 L3, T4
86 XLR CUT CD9 L3
CAM 89 ADD 1K res. in series with C110 L13, L12, L9
87 GTL VR6 or CUT D16 L17, L16, L13
89 GTL VR6 or CUT D16 L17, L16, L13
89 XLR VR5 or CUT D14 L15, L12, L11
90 LTD VR201 or CUT D203 L304, L305, L306
93LTD WX VR-3 L16, L17, L18
132 (OLD) CUT Q25 T14, T15, L3, C116, (ssb) R136
132 A CUT CD39 & CD40 R79 (ssb) R87
132 XLR R134 or CUT R125 L3, (ssb)R130
134 CUT D40 & D41 L8, L10 (ssb)VR15
135 (OLD) CUT Q25 T14, T15, L3, C116 (ssb)R136
135 XLR R134 or CUT R125 L3, (ssb)R130
138 A (OLD) CUT D40 & D41 L8, L10 (ssb) VR15
138 XLR VR7 or VR6 VR8, (ssb)CT7
139 VR12 or CUT D63 L12, L10, (ssb)VR15
139 XLR VR7 & VR6 VR8, (ssb)CT7
140 GTL CUT R104 VR6, (ssb)VR7
142 GTL CUT R104 VR6, (ssb)VR7
146 GTL VR5 or CUT TR29 VR10, (ssb)VR6
148 GTL CUT R131 VR10, (ssb)VR11
148 GTL-DX (early prod. model) VR5 VR11, (ssb)VR7
148 GTL-DX (late prod. model) REMOVE VR14 or CUT TR32 VR13, (ssb)VR12
148 GTL-B VR14 RV15, (ssb)RV13
148 GTL-DX (copy ver.) RV12 RV11, (ssb)RV6,RV3
1000 GTL VR6 or CUT D16 L17, L16, L13, (ssb)
2000 GTL CUT R131 VR10, (ssb)VR11
GTL 150 RV14 RV13, (ssb)RV12,RV4



Cobra Power Mods
Radio Try This
2000 GTL,2010 CUT TR24 Change R126 to a 2.2k resistor Change R124 to a 4.7k resistor Tune L47,L48,L46,L45,L38 for max RF output AM Carrier Power VR10 Mod Meter VR7 AM Signal meter VR1
142GTL CUT TR32 Change R99 to a 2.2k resistor Change R94 to a 2.2k resistor Adjust L36,L37 for max RF output AM Power VR6 SSB Power VR7 VR1 "S"Meter VR2 Squelch VR3 TX Freq VR12 Mod Meter VR10 TX Power Meter
148GTL+F CUT TR24 Change R126 to a 2.2k resistor Change R124 to a 2.2k resistor Tune L37,L38 for max RF output
29G

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