PRESIDENT P400 Operations Instructions Page 6

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Specifications
Channels 40 AM, 40 LSB, 40 USB
Frequency Range 26,965 to 27,405 MHz
Frequency Control Phase Locked Loop (PLL) Synthesized Circuitry.
Frequency Tolerance 0.0005% Typical
Frequency Stability 0.001 %
Operating Temperature Range -20°C to +50°C
Microphone Plug-in type; dynamic with push-to-talk switch and
coiled cord
117V AC nominal.
13.8V DC nominal. (positive or negative ground)
Power Consumption (120V AC) Transmit: full mod., 75 watts.
Receive: squelched, 45 watts.
Transmit: 2.2A typical; 3A maximum.
Receive: squelched, 0.3A; full audio output, 1A
5"H X 131/2"W X 12"D
13.3 pounds.
UHF, SO-239
Shows relative power output and received signal
strength and modulation.
46 transistors, 1 field effect transistor, 6 integrated
circuits, 61 diodes and 6 light emitting diodes.
Input Voltage
Current Drain (13.8V DC)
Size
Weight
Antenna Connector
Meters
Semiconductors
TRANSMITIER
Power Output
Modulation
Intermodulation Distortion
SSB Carrier Suppression
Unwantend Sideband
Frequency Response
Output Impedance
SSB Filter
Output Indicator
RECEIVER
Sensitivity
Selectivity
Cross Modulation
Image Rejection
I.F. Frequency
AM and SSB RF Gain Control
Automatic Gain Control
Squelch
Noise Blanker
Clarifier Range
Audio Output Power
Frequency Response
Distortion
Built-in Speaker
External Speaker (Not Suppli-
ed)
PA SYSTEM
Power Output
External Speaker for PA
Better than -5e dB
Better than -60 dB
AM and SSB: 7.8 MHz
Adjustable for optimum signal reception
(AGC): Less than 10 dB change in audio output for
inputs from 10 to 5000.000 microvolts.
Adjustable;.threshold less than .5IAV
RF type, effective on AM and SSB.
:t 1.25 KHz
4 watts into 8 ohms
300 to 2500 Hz
Less than 10% at 3 watts output.
8 ohms
8 ohms, disables internal speaker when connected.
4.0 watts into External Speaker
8 ohms (not supplied)
Radio Back Panel View
AM, 4 watts
SSB, 12 watts, P.E.P.
AM, high and Iow level Class B.
SSB: 3rd and 5th order, more than -25 dB.
7th and 9th oder, more than -35 dB.
More than -45 dB
More than -45 dB
AM and SSB: 300 to 3000 Hz.
.52 ohms, unbalanced
7.8 MHz, crystal lattice type
6 dB
~ 4.2 KHz
60 dB @ 7.0 KHz
Meter shows relative RF output power.
@
~
~~~~ ~~~~ ~~~~ ~~~~ ~~~~ ~~~~
, PA SPEAKER Jack SERIAL NUMBER IAC/DC Switch
ANTENNA Connector DC POWER Cord Jack FUSE
I
EXTERNAL SPEAKER Jack AC POWER Cord
SSB: Less thanO.25/-lV for 10 dB (S+N)/N at grea-
ter than 1/2watt of audio output.
AM: Less than 0.5/-lVfor 10 dB (S+N)/N at greater
than 1/2watt of audio output.
SSB and AM: 6 dB @ 4.2 KHz, 60 dB @ 7.9 KHz
PUBLIC ADDRESS
0
~
FUSE 120V,AC 60Hz
SERIAL NO
13.8V ~c DC AC
0 0 o".~ IDJI[]El»
An external 8 Ohm, 4 watt speaker may be connected to the PA speaker jack located on
the rear panel when the transceiver is used as a public address system. The speaker
should be directed away from the microphone to prevent acoustic feed-back.
Physical separation or isolation of the microphone and speaker must be used when op-
erating the PA at high output levels:
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