PRESIDENT TOMMY User manual

TOMMY
SERVICE MANUAL

-TECNNICAL CHARACTERITICS
TOMMY ( config: E d EU PL )
1-GENERAL:
-Multiconfiguration(E,d,EU,PL)
-E ⇒40 channels AM 4W (from 26,965Mhz to 27,405Mhz)
-d ⇒40 channels AM 1W (from 26,965Mhz to 27,405Mhz)
-EU ⇒40 channels AM 1W (from 26,965Mhz to 27,405Mhz)
-PL ⇒40 channels AM 4W (from 26,960Mhz to 27,400Mhz)
-Channel step
-10KHz
-Class of emission
-AM(A3E)
-Power supply
-13,2V (from10,8V to 15,6V)
-Antenna impedance
-50Ω
-Dimensions(in mm)
-125(L)x45(H)x150(D)
-Weight
-0,7Kg
2-TRANSMISSION:
-Frequency allowance
-±200Hz
-Transmission interference
-Inferior to 4nW(-54dBm)
-Audio frequency response
-From 300Hz to 3kHz in AM
-Emitted power in the adjacent channel
-Inferior to 20µW
-Microphone sensitivity
-Inferior to 10mV
-Current drain
-1,7A(in transmission mode with modulation)
-Modulated signal distortion
-Inferior to 2%

3-RECEPTION:
-Maximum sensitivity at 20dB sinad
-0,5µV(-113dBm) AM
-Audio frequency response
-From 300Hz to 3kHz in AM
-Adjacent channel selectivity
-Superior to 60dB
-Frequency image rejection
-Superior to 60dB
-Intermodulation response
-Superior to 54dB
-Maximum audio power
-3W
-Squelch sensitivity
-Threshold 0,2µV(-120dBm)/Tight 1mV(-47dBm)
-Current drain
-300mA nominal/750mA maximum

ALIGNMENT PROCEDURE
(TOMMY)
* VCO/PLL PORTION
- Alignment procedure
- Test points
- Frequencies chart
* TRANSMITTER
- Alignment procedure
- Test points
* RECEIVER
- Alignment procedure
- Test points
Test equipement required
Frequency counter 200 Mhz HF Generator
DCVolmeter BFVolmeter
Distortiometer HFVolmeter
Wattmeter - Dummy load Osilloscope
FM linear detector Load 8 Ω
AF generator Sinad meter
Conditions of Measurements on HF Generator
Reception
AM mode: Level - 107 dBm Frequency 1 KHz with 60% of modulation.
Transmission
Frequency1 KHz 30mV.

ALIGNMENT VCO/PLL
1 - Alignment procedure(13,2V;configuration”EU,E”)
STEP CONDITION ADJUSTMENT REMARKS OF ADJUSTMENT
1 AM(EU,E)
RX mode
Channel 20
CT301 Connect a frequency counter to
TP200,and adjust CT301 to reach
37,900MHz.
2 AM(EU,E)
TX/RX mode
Channel 40
Connect a voltmeter to TP 103,and check:
2,2V±0,1V ≤Tx Channel 40≤3,2V±0,1V
2,5V±0,1V ≤Rx Channel 40≤3,5V±0,1V
3 AM(EU,E)
TX/RX mode
Channel 1
Connect a voltmeter to TP 103,and check:
Tx Channel 1=Tx Channel 40-0,3V±0,1V
Rx Channel 1=Rx Channel 40-0,3V±0,1V
4 AM(EU,E)
TX/RX mode
Channel 1 to 40
Connect a frequency counter to
TP200,and check frequencies.