Specifications

Page 18

d) Adjust the First I.F. coil, L701, for maximum RF output. Adjust both slugs of the balanced modulator transformer, T1301,

for maximum RF output.

e) Increase the output of the audio generator until the wattmeter reads 40 watts. Reset the audio generator to 200 Hertz and

adjust the USB carrier oscillator trimmer, C1503, for a reading of 10 watts.

f) Switch the Mode Selector to the LSB position. Adjust the LSB carrier oscillator trimmer, C1501, for a reading of 10 watts.

g) Reset the audio generator to 1500 Hertz, the output power to 40 watts. Reset the audio generator to 200 Hertz and readjust

carrier oscillator trimmers, if required, for 10 watts.

NOTE

An HF signal generator or AM transmitter covering the CB or 10-meter bands will be required for the following adjustments.

h) Set the Mode Selector switch to USB. Tune in an AM carrier from the transmitter or an unmodulated signal from the

generator. Adjust the main tuning dial for a zero heat at the transceiver output.

i) Set the Mode Selector switch to LSB and retune for zero heat using the LSB VFO shifter (C1621)

NOTE

An AM transmitter must be used for the following steps.

j) Apply voice modulation to the AM transmitter and adjust the AM VFO shifter (C1613) for best received audio quality.

k) Remove modulation from the AM transmitter. Turn the SPOT switch on and adjust the AM carrier oscillator trimmer (1507)

for zero beat.

5) VFO Calibration.

After allowing approximately five minutes for warm up, set the main tuning dial to the frequency standard or marker generator

signal nearest to the center of the band to be calibrated. Adjust the DIAL SET to the 12 o’clock position. Locate the VFO cover

and adjust the appropriate trimmer to zero beat the VFO with the standard or generator signal. This adjustment procedure should be

performed for both bands with the Sideband Selector in the USB position.

Use an insulated alignment tool for adjustment. Accuracy in other parts of the bands will be quite good, but remember that the

1011D is not to be considered a frequency standard; be cautious when operating near band edges.

6) Troubleshooting.

The information contained in Figures 6 and 7, together with the voltage and resistance measurements in Table 1, and the

information in Table 2, should be sufficient for most troubleshooting by the average licensed amateur radio operator. Note that the

conditions for making the voltage and resistance measurements of Table 1 are as follows:

a) RECEIVE:

i) R.F. Gain Control in “minimum” position.

ii) Mode Selector Switch in “AM REC” position.

iii) Main Tuning Control set to middle of range.

iv) Band Switch

set to “28.5”

v) Antenna connection terminated in 50 ohm dummy load.

vi) A.F. Gain Control:

(1) In “OFF” position for resistance measurements.

(2) Switch at “ON” position but gain set at “minimum” for voltage measurements.

vii) ANL in “OFF” position.

viii) Spot Switch in “OFF” position.

b) TRANSMIT:

i) Mic Gain Control in “minimum” position.

ii) Band Switch set to “28.5”.

iii) Transmitter fully tuned in middle of band.

iv) Voltage measured with Tune-Rec Switch in the “TUNE” position.

NOTE: All voltages / resistances are plus or minus 20%.