Yaesu FT-101EE - Gain, Tuning, and Calibration Controls; Transmitter Mode, Processor, and Noise Blanker Controls; Power, Metering, and Accessory Controls

most readable point without affecting your trans-
mitting frequency. Its use is particularly valuable
in “net”? operation where several participants may
be transmitting slightly off frequency. The clari-
fier control functions with the clarifier switch (7)
set to the push-down position, and a red warning
lamp lights up. With the clarifier switch out
position, the red lamp turns off and the receiver
is locked to the transmitting frequency.
Normally, you will want to keep the clarifier in
the OFF position until the initial contact is made.
The clarifier control may then be used to zero-in
and correct the any drift on the received signal.
(8) PRESELECT ;
This control pretunes the signal circuits for both
transmit and receive. The preselect circuit pro-
vides continuous permiability tuning throughout
the frequency range of the transceiver.
(9) MIC GAIN/CARRIER ;
The MIC GAIN/CARRIER controls are mounted
on concentric shafts. The carrier control (lever
control) varies the amount of the carrier in the
CW, AM and TUNE modes of operation.
The MIC GAIN control (round knob) varies the
audio level from the microphone amplifier stage.
The control has sufficient range to permit the use
of any high impedance crystal or dynamic micro-
phone. Both, controls have maximum gain with
the control set at 10 (fully clockwise).
(10) PLATE;
Tunes plate circuit of the final amplifier.
(11) LOADING ;
Tunes the output circuit of the pi network to
match antenna and feed line impedance.
(12) LEVEL
This controls the output level of the RF processor
with the RF processor on.
(A) POWER
Main switch turns transceiver ““ON”’’ for both AC
and DC operation.
(B) HEATER
With
transmitter
this switch in the down position, the
tube off. This
reduces battery drain to 0.5 amp and_ thus
heaters are turned
permits long periods of listening without exces-
sive battery drain. Pushing the rocker switch to
the upper position provides supply voltage to the
tube heaters. After a 30 second warm-up, the
transmitter is ready for operation. This switch
operates in both DC and AC modes.
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(C) MOX-PTT-VOX
This slide switch selects desired transmitter mode
for both microphone and key operation.
MOX-(Manual transmit switch position)
Locks transmitter ‘““ON’’ and must be returned
to PTT position for receiver recovery.
PTT-(Push-to-talk)
Locks
switch is depressed. Receiver recovers auto-
transmitter ‘ON’ when microphone
matically when microphone switch is released.
VOX-(Voice operated transmit or break-in CW
operation)
This switch position allows the operator to
actuate the transmitter by simply speaking
into the microphone. Receiver recovers auto-
matically when the operator stops speaking.
For break-in CW, the VOX system will actuate
the transmitter each time the key is depressed,
and receiver recovers each time key is released.
(D) PROCESS
RF speech processor is placed into the circuit to
increase the modulation power with this switch
ON position.
(E) NB (NOISE BLANKER)
In upper position, the noise blanker is placed in
the circuit and eliminates noise pulses caused by
auto ignition.
(F) RF ATT (RF Attenuator)
This switch provides insertion of a 20 db attenu-
ator in the incoming signal path to minimize
cross modulation which may be caused by ex-
tremely strong local signals.
(G) 25 KHz/100 KHz (CALIBRATOR)
The 100 KHz crystal oscillator is used to cali-
brate the receiver. In the 25 KHz position, the 25
KHz multivibrator generates a marker signal at
each 25 KHz point on the dial. Clarifier control
must be in the “OFF” position when setting
calibration.
(H) PHONES
Headphone may be inserted in this jack for
private listening. The internal speaker is dis-
connected when the headphone plug is inserted.
Any high quality head phone may be used.
(1) MIC
Microphone Jack. Four pin connector is used for
microphone input, and push to talk relay actua-
tion.
(J) METER
Selects the meter mode to read PA cathode
current (I.C.), relative power output (PO), or
ALC feedback voltage.