zur vorigen Seite to previous page

( Klicke Bild zum Vergrößern; click picture to enlarge )

 

PRC-25: RT-505/PRC-25 (Step: 50 kHz)
 
PRC-25
oberstes Chassis
upper chassis
mittleres Chassis
middle chassis
unteres Chassis
lower chassis

 

PRC-25-T: RT-505/PRC-25-T (Step: 50 kHz)
 
PRC-25-T
oberstes Chassis
upper chassis
mittleres Chassis
middle chassis
unteres Chassis
lower chassis

 

PRC-77: RT-841/PRC-77 (Step: 50 kHz)
 
PRC-77 (50 kHz)
oberstes Chassis
upper chassis
mittleres Chassis
middle chassis
unteres Chassis
lower chassis

 

PRC-77: RT-841A/25GY (Step: 25 kHz)
 
PRC-77 (25 kHz)
oberstes Chassis
upper chassis
mittleres Chassis
middle chassis
unteres Chassis
lower chassis


PRC-25: Versuchsmodelle ; early models
PRC-25 X2/X3/X4
   
PRC-25 X2
PRC-25 X3
PRC-25 X4

Bilder von PRC-25 X3,
mit freundlicher Genehmigung von Patrick, lw8dbp

Pictures of PRC-25 X3,
courtesy of Patrick, lw8dp. Thank you, Patrick!



Module, die sowohl im PRC25
als auch im PRC77 verwendet werden können

Modules to be interchanged in PRC25 and PRC77

(Following list courtesy of Alan Tasker, WA1NYR)

Module# Module function SMD# REV"A" SMD# PRC25? PRC77?
A1 DC/DC Converter 447269 .. . yes not needed
A2 PA Tank 447620 . . yes repl/w A32
A3 1st Rx RF Amp 447555 . . yes repl/w A33
A4 2nd Rx RF Amp 337556 . . yes repl/w A34
A5 Rx Mixer 447462 . . yes repl/w A35
A6 Tx IPA 447557 . . yes repl/w A37
A7 Tx 2nd RF Amp 447558 . . yes no
A8 Tx 1st RF Amp 447559 . . yes no
A9 VFO 447554 . . yes repl/w A39
A10 Interval Oscillator 447407 . . yes repl/w A40
A11 Discriminator 447446 yes ? yes yes
A12 2nd Mixer 447447 yes ? yes yes
A13 53 MHz Filter 447448 . . yes repl/w A43
A14 1st Mixer 447449 . . yes repl/w A44
A15 1 MHz Spectrum Gen 447450 . . yes repl/w A45
A16 Voltage Regulator 447451 yes ? yes yes
A17 Phase Comparitor 447452 yes ? yes yes
A18 5.6 MHz IF 447453 yes ? yes yes
A19 1/4 Wave Network 447454 . . yes no
A20 Sidestep Oscillator 447455 . . yes no
A21 RX If limiter 447177 yes 875724 yes yes
A22 Speech Amp 447314 . . yes yes
A23 Tone Generator 447316 . . yes yes
A24 Tone Squelch 447318 . . yes repl/w A54
A25 Rx Audio 447113 . . yes repl/w A55
A26 . . . . . .
A27 . . . . . .
A28 Antenna Loading ? . . yes yes
A29 Tx PA ? . . yes no
A30 Filter ? . . yes no
A31 Tx Frequency Control ? . . no yes
A32 RX Input ? . . no yes
A33 Rx 1st RF Amp ? . . no yes
A34 Rx 2nd RF Amp ? yes ? no yes
A35 Rx Mixer 448751 yes ? no yes
A36 Tx PA ? . . no yes
A37 Tx IPA 448745 . . no yes
A38 Tx VFO ? . . no yes
A39 Synthesizer VFO ? yes ? no yes
A40 Interval Oscillator ? yes ? no yes
A41 . . . . no no
A42 . . . . no no
A43 53 MHz Filter 448739 . . no yes
A44 1st Mixer ? yes 621272 no yes
A45 1 MHz Spectrum Gen 448750 yes ? no yes
A46 . . . . no no
A47 . . . . no no
A48 . . . . no no
A49 . . . . no no
A50 Tx Mixer 448753 . . no yes
A51 . . . . no no
A52 . . . . no no
A53 . . . . no no
A54 Tone Squelch ? yes 875637 no yes
A55 Rx Audio 448752 . . no yes
A56 . . . . no no
A57 . . . . no no
A58 . . . . no no
A59 . . . . no no
A60 Wide Band Attenuator ? . . no yes