PRESIDENT FRANKLIN User Manual

Section 1 Spécification
Jhank vou for your confidence in sélection Our two-
way radio equipment. We know you'll find your transceiver
as exciting as it is practical. Many years of valuable ex
périence designing electronic products arc bchind our two-
way communications sytstems. Only the highest quality
compunents are incorporated into SSB radios to assure
assure reliability anB maximum performance.
Installing and operating tfie SSB is nol complicated,
but the flexibility provided by its numerous operating
features may not be fuily appreciated until a little time is
spent becoming familier with its Controls and connections.
It will be to your advantage to savc all the packing materiels
-cartons, fillers, cushoning, etc., they will prove valuable in
preventing damage should you ever hâve occasion to
transport or ship the SSB.
Spécifications
General
Channels
3000 channals
Receiver
AM Sensitivity
1 /-V for 10C8S/N
Modulation Modes CW. FM, AM. USB, LS B
FM Sensitivity 1 eV for 20 dB S/N
Frequency Range
26.065 to 28.305 MHz
SSB Sensitivity 0.2 «V for 10 dB S/N
Frequ8ncy Control
Phase-Iocked Synthesizer
AM/FM Selectivity
5cBat4 kHz, 50dBat 10 kHz
Frequency Tolérance
*0.005%
SSB Selectivity 5 dB at 2 kHz
Frequency Stability
*0.003%
Image Rejection
More than 50 dB
Operating Température
-30"C to + 50° C
IF Rejection
More than 80 dB at 455 kHz
Range
AGC Change in audio output less
Micruphone
Plug-in [4-pin], 600 Ohm
than 12dB:from IG^Vto 0.4V
dynamie type
Squelch
Adjustable -threshold less than
AC Input Voltage 110V 5CHz (22CV 60Hz) 0.7 mV
AC Piwar Consumption 75W
Audio Frequency
400 to 2,500 Hz
Antenna Connectors
Standard SO-239 type X2
Response
|Aand B]
Distortion
Less than 10% et 2 wâtts output
Semicorductors 6 IC, 1 FETs,43 Transistors
into 8 Ohms
Meter »1
Indicates relative RF power
output/antenna SWR
Adjacent Channel
>75 dB
Meters?
Indicates received signal strength
Rejection
>50 dB
10.695MHz [Am-1st,SSB],
Transmitter
Cross Modulation
Intermediate Frequency
Power Cütput
Low 0.5-AM 0.5-FM 3-SSB(W)
Clarifier Range
455 KHz [AM-2nd]
Normal 5-AM 5-FM 12-SSB(W)
=5 KHz
SSB Generation
Dual-balanced modulation
Noise blanker
!F single gete type
AM Modulation
Class B amplitude, culleclors
Audio Output Power
More than 3 watts into 8 Ohms
modulation
Built-in Speaker
8 Ohms, dynamie
AM Modulation
Up to 1C0%
Exîernal Speaker
Disables internai speaker whan
Capability
(optional)
connected
FM Déviation
Clerifier Range
Harmonie and Spurious
Emission
AM/FM Frequency
Response
SSB Frequency
Resoonse
Output Impédance
[A and B]
Output Indicators
*1.5 KHz @ 1,250 Hz 20 mV
audio
-5 KHz y
Better titan 60 dB
400 to 5,000 Hz
400 to 3,000 Hz
50 Ohms unbalanced X2
RF Meter shows relative RF
output power.
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PRESIDENT FRANKLIN Specifications

General

Channels	40
Antenna Impedance	50 ohms
Mode	AM/FM
Frequency Range	26.965 MHz to 27.405 MHz
Microphone	Electret
Weight	Approx. 1 kg

Summary

Section 1 Specification

General Specifications

Basic technical parameters like channels, modes, frequency range, and operating temperature.

Transmitter Specifications

Details on power output, SSB generation, modulation capabilities, and deviation.

Receiver Specifications

Covers receiver sensitivity, selectivity, AGC, squelch, and audio response.

Section 2 Installation

Location and Connection

Guidance on optimal placement and necessary connections for the transceiver.

Antenna Considerations

Information on selecting and connecting antennas for optimal performance.

Audio Output Options

Instructions for connecting remote speakers and using the public address system.

Section 3 Operation

Front Panel Controls and Indicators

Overview and detailed functions of all front panel controls and indicators.

Receive Operation Procedure

Step-by-step guide for receiving signals and adjusting controls.

Transmit Operation Procedure

Step-by-step guide for transmitting signals and using the microphone.

Public Address Operation

Instructions for using the public address system with a speaker.

SWR Measurement Procedure

Instructions on how to measure and interpret antenna standing wave ratio (SWR).

Rear Panel Connectors

Antenna Receptacles

Description of antenna connection ports (A/B) for coaxial plugs.

Audio and Control Ports

Details PA speaker, external speaker, CW key, and selective call jacks.

Utility Ports and Protection

Information on fuse, power cord, frequency counter, and recording output.

Section 4 Maintenance & Adjustment

Circuit Theory Explanation

Explains the underlying Phase-Locked Loop (PLL) circuit and its function.

Alignment Setup and Equipment

General setup, measurement conditions, and test equipment required for alignment.

PLL Circuit Alignment Steps

Detailed steps for aligning reference frequency, IF, VCO, and offset.

Transmitter Alignment Steps

Procedures for adjusting current, RF power amplifier, and modulation.

Receiver Alignment Steps

Procedures for adjusting AM/SSB/FM sensitivity, squelch, and meters.