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3.6
ЗЕТ
3.8
MICROPHONE
A high quality dynamic microphone is supplied with your transceiver. Merely plug it into
the proper receptacle on the front panel.
This microphone is of 500 ohms impedance with a normal output of 6mV. Should you
wish to use a different microphone, make certain it is of equal impedance and output
level.
|
EXTERNAL SPEAKER
|
An external speaker jack and plug is supplied with your unit, if another speaker or head-
set use is desired. In either case, the impedance should be 8 ohms. The use of external
speaker jack will disable the internal speaker.
|
EXTRA CRYSTAL SOCKETS
The VFO
provides transmit and receive operation on any frequency between 144.00MHz
and 146.00MHz.
It is convenient, however, to install a crystal for a regularly used fre-
quency such as a club or a repeater frequency. There are 4 external crystal sockets under
the Access Cover.
They work at A, B, C, & D positions of the Function Switch. When
the Course Switch is in the 144 or 145 position on the panels, the frequencies are given as
follows:
|
|
|
Fx (MHz) = Rx freq — Chart freq
MODE
2
ELT
N N
132.6135
132.6165
132.6155
145
133.6165
=
133.6155
The frequencies are tuned with the trimmers shown in Fig. VII.
If the frequency counter
can read as far as 144MHz, the frequencies may be tune in transmission status.
133.6135 |
To order additional crystals, the following correlation data is provided.
Remember to
specify high activity as a prerequisite to your acceptance.
CRYSTAL SPECIFICATION:
Calibration tolerance:
20 x 1079 or less
Holder type:
HC-25/u
Load capacitance:
20 pF
Effective resistance:
40 ohms or less
Driving level:
|
4mW
Temperature:
| 10°C to +60°C
—Б—
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