Midland ALAN-42 DS - VCO Adjustments; VCO Lock Voltage Adjustment; Transmitter Adjustments; Output Power Adjustments

2-3.VCO Adjustments
Adjustment Adjustment Condition Unit Value Location Adjust Point
VCO Lock
Voltage
1).Select Channel : 1E (27.415MHz)
2).At RX mode
V
1.0V±0.1
TP501 TC502
2-4.Transmitter Adjustments
Adjustment Adjustment Condition Unit Value Adjust Point
Output Power (4W)
1).Select the channel : 41 (26.565MHz)
2). Enable High power
3).Select FM by AM/FM switch
4).Press PTT key
5).Select channel 40 and check
6).Select channel 1 and check.
7).Select channel 40U and check.
8).Select channel 1A and check
19).Select channel 40L and check.
W Follow Spec. RV202
Harmonics
1).Select the channel : 41 (26.565MHz)
2). Enable High power
3).Select FM by AM/FM switch
4).Press PTT key
5).L212 : Shift up side to Main Body.
6).L210 : Shift down side to Main Body.
7).Select channel 40 and check.
8).Select channel 40U and check.
dBm Follow Spec.
L211
L212
L210
Output Power (1W)
1).Select the channel : 1 (26.965MHz)
2).Enable Low power
3).Select FM by AM/FM switch
4).Press PTT key
W Follow Spec. Check only
Frequency
1).Select the channel : 1 (26.965MHz)
2). Enable High power
3).Select FM by AM/FM switch
4).Press PTT key
Hz Follow Spec. TC501
Frequency
(UK band)
1).Select the channel : 1U (27.60125MHz)
2). Enable High power
3).Press PTT key
Hz Follow Spec. Check only
AM Modulation (4W)
1).Select the channel : 1 (26.965MHz)
2). Enable High power
3).Select AM by AM/FM switch
4).Press PTT key
% Follow Spec. RV203
AM Modulation (1W)
1).Select the channel : 1 (26.965MHz)
2).Enable Low power
3).Select AM by AM/FM switch
4).Press PTT key
% Follow Spec Check only
FM max Deviation
1).Select the channel : 41 (26.565MHz)
2). Enable High power
3).Select FM by AM/FM switch
4).Press PTT key
5).Select channel 1 and check
6).Select channel 40 and check.
7).Select channel 40U and check
KHz
1.7
(Follow Spec)
RV501
Signal Meter (4W)
1).Select the channel : 1 (26.965MHz)
2). Enable High power
3).Select FM by AM/FM switch
4).Press PTT key
Bar 5Bar(4W) RV201
Signal Meter (1W)
1).Select the channel : 1 (26.965MHz)
2). Enable Low power
3).Select FM by AM/FM switch
4).Press PTT key
Bar 2Bar(1W) Check only