Difference between revisions of "AN~PRC-174"

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==Control Connector Pinouts==
 
==Control Connector Pinouts==
===61 Pin Israeli Connector (Small or Hex)
+
;61 Pin Israeli Connector (Small or Hex)
1 X23 1khz BCD8  
+
:'''1''' - X23 1khz BCD8  
2 X50 1mhz BCD1  
+
:'''2''' - X50 1mhz BCD1  
3 X30 10khz BCD1  
+
:'''3''' - X30 10khz BCD1  
4 X11 100hz BCD2  
+
:'''4''' - X11 100hz BCD2  
5 X10 100hz BCD1  
+
:'''5''' - X10 100hz BCD1  
6 X22 1khz BCD4  
+
:'''6''' - X22 1khz BCD4  
7 X43 100khz BCD8  
+
:'''7''' - X43 100khz BCD8  
8 REM CONT (ground to enable remote control)  
+
:'''8''' - REM CONT (ground to enable remote control)  
9 N/C  
+
:'''9''' - N/C  
10 X51 1mhz BCD2  
+
:'''10''' - X51 1mhz BCD2  
11 X31 10khz BCD2  
+
:'''11''' - X31 10khz BCD2  
12 X12 100khz BCD4  
+
:'''12''' - X12 100khz BCD4  
13 IND (high to enable indicator functions)  
+
:'''13''' - IND (high to enable indicator functions)  
14 GND  
+
:'''14''' - GND  
15 VOL REMOTE (remote volume control)  
+
:'''15''' - VOL REMOTE (remote volume control)  
16 BAT IN (battery pack in, might be able to charge with this pin)  
+
:'''16''' - BAT IN (battery pack in, might be able to charge with this pin)  
17 X21 1khz BCD2  
+
:'''17''' - X21 1khz BCD2  
18 X42 100khz BCD4  
+
:'''18''' - X42 100khz BCD4  
19 TRANSIT (pulse when 10mhz, 1mhz, 100khz or 10khz are changed)  
+
:'''19''' - TRANSIT (pulse when 10mhz, 1mhz, 100khz or 10khz are changed)  
20 NCW (high when narrow CW is selected)  
+
:'''20''' - NCW (high when narrow CW is selected)  
21 WCW (high when wide CW is selected)  
+
:'''21''' - WCW (high when wide CW is selected)  
22 DATA (high when data is selected)  
+
:'''22''' - DATA (high when data is selected)  
23 12V REM (12 volts when remote is selected) 24 X52 1mhz BCD4  
+
:'''23''' - 12V REM (12 volts when remote is selected) 24 X52 1mhz BCD4  
25 X32 10khz BCD4  
+
:'''25''' - X32 10khz BCD4  
26 X13 100hz BCD8  
+
:'''26''' - X13 100hz BCD8  
27 BATT CHK (high to enable battery check and LED display)  
+
:'''27''' - BATT CHK (high to enable battery check and LED display)  
28 TX LEVEL (high to enable power our and LED display)  
+
:'''28''' - TX LEVEL (high to enable power our and LED display)  
29 TUNE (high when radio is tuning)  
+
:'''29''' - TUNE (high when radio is tuning)  
30 FO UNLOCK (high when synthesizer is unlocked)
+
:'''30''' - FO UNLOCK (high when synthesizer is unlocked)
31 N/C  
+
:'''31''' - N/C  
32 S METER (analog RSSI)  
+
:'''32''' - S METER (analog RSSI)  
33 DIP (high when radio on dipole, low when on whip)  
+
:'''33''' - DIP (high when radio on dipole, low when on whip)  
34 X20 1khz BCD1 35 X41 100khz BCD2  
+
:'''34''' - X20 1khz BCD1 35 X41 100khz BCD2  
36 X60 1mhz BCD1 37 AM (high to enable AM mode)  
+
:'''36''' - X60 1mhz BCD1 37 AM (high to enable AM mode)  
38 OFF (LOW when off – 24v when hi, caution)  
+
:'''38''' - OFF (LOW when off – 24v when hi, caution)  
39 ON (LOW when on – 24v when hi, caution)  
+
:'''39''' - ON (LOW when on – 24v when hi, caution)  
40 USB (LOW when on USB, 12v when hi)  
+
:'''40''' - USB (LOW when on USB, 12v when hi)  
41 R/T (LOW when tx enabled, 12v when hi)  
+
:'''41''' - R/T (LOW when tx enabled, 12v when hi)  
42 SSB (high to enable SSB mode)  
+
:'''42''' - SSB (high to enable SSB mode)  
43 N/C  
+
:'''43''' - N/C  
44 X53 1mhz BCD8  
+
:'''44''' - X53 1mhz BCD8  
45 X33 10khz BCD8  
+
:'''45''' - X33 10khz BCD8  
46 N/C – book says N/C but had some kind of pulsing on it  
+
:'''46''' - N/C – book says N/C but had some kind of pulsing on it  
47 SAVE/SQUELCH (hi batt save mode on 174, squelch mode on 174S)  
+
:'''47''' - SAVE/SQUELCH (hi batt save mode on 174, squelch mode on 174S)  
48 NO MATCH (high when no match found)  
+
:'''48''' - NO MATCH (high when no match found)  
49 MIC GND  
+
:'''49''' - MIC GND  
50 MIC HI  
+
:'''50''' - MIC HI  
51 PHONE (handset rx audio)  
+
:'''51''' - PHONE (handset rx audio)  
52 PTT  
+
:'''52''' - PTT  
53 +12V  
+
:'''53''' - +12V  
54 ALC (not sure about this one...)  
+
:'''54''' - ALC (not sure about this one...)  
55 PTT 12V  
+
:'''55''' - PTT 12V  
56 BP (PA) (ground to bypass PA when using external amp, 100mw out)  
+
:'''56''' - BP (PA) (ground to bypass PA when using external amp, 100mw out)  
57 FIXED AUDIO (100mv fixed audio)  
+
:'''57''' - FIXED AUDIO (100mv fixed audio)  
58 X40 100khz BCD1  
+
:'''58''' - X40 100khz BCD1  
59 X61 1mhz BCD2  
+
:'''59''' - X61 1mhz BCD2  
60 N/C – book says N/C but had some kind of pulsing on it  
+
:'''60''' - N/C – book says N/C but had some kind of pulsing on it  
61 LT (M.N. BP) matching network bypass
+
:'''61''' - LT (M.N. BP) matching network bypass
  
  
===66 Pin Round connector, add these pins===
+
;66 Pin Round connector, add these pins
 
:'''62''' - SQUELCH  
 
:'''62''' - SQUELCH  
 
:'''63''' - N/C  
 
:'''63''' - N/C  

Revision as of 19:36, 28 May 2013


Control Connector Pinouts

61 Pin Israeli Connector (Small or Hex)
1 - X23 1khz BCD8
2 - X50 1mhz BCD1
3 - X30 10khz BCD1
4 - X11 100hz BCD2
5 - X10 100hz BCD1
6 - X22 1khz BCD4
7 - X43 100khz BCD8
8 - REM CONT (ground to enable remote control)
9 - N/C
10 - X51 1mhz BCD2
11 - X31 10khz BCD2
12 - X12 100khz BCD4
13 - IND (high to enable indicator functions)
14 - GND
15 - VOL REMOTE (remote volume control)
16 - BAT IN (battery pack in, might be able to charge with this pin)
17 - X21 1khz BCD2
18 - X42 100khz BCD4
19 - TRANSIT (pulse when 10mhz, 1mhz, 100khz or 10khz are changed)
20 - NCW (high when narrow CW is selected)
21 - WCW (high when wide CW is selected)
22 - DATA (high when data is selected)
23 - 12V REM (12 volts when remote is selected) 24 X52 1mhz BCD4
25 - X32 10khz BCD4
26 - X13 100hz BCD8
27 - BATT CHK (high to enable battery check and LED display)
28 - TX LEVEL (high to enable power our and LED display)
29 - TUNE (high when radio is tuning)
30 - FO UNLOCK (high when synthesizer is unlocked)
31 - N/C
32 - S METER (analog RSSI)
33 - DIP (high when radio on dipole, low when on whip)
34 - X20 1khz BCD1 35 X41 100khz BCD2
36 - X60 1mhz BCD1 37 AM (high to enable AM mode)
38 - OFF (LOW when off – 24v when hi, caution)
39 - ON (LOW when on – 24v when hi, caution)
40 - USB (LOW when on USB, 12v when hi)
41 - R/T (LOW when tx enabled, 12v when hi)
42 - SSB (high to enable SSB mode)
43 - N/C
44 - X53 1mhz BCD8
45 - X33 10khz BCD8
46 - N/C – book says N/C but had some kind of pulsing on it
47 - SAVE/SQUELCH (hi batt save mode on 174, squelch mode on 174S)
48 - NO MATCH (high when no match found)
49 - MIC GND
50 - MIC HI
51 - PHONE (handset rx audio)
52 - PTT
53 - +12V
54 - ALC (not sure about this one...)
55 - PTT 12V
56 - BP (PA) (ground to bypass PA when using external amp, 100mw out)
57 - FIXED AUDIO (100mv fixed audio)
58 - X40 100khz BCD1
59 - X61 1mhz BCD2
60 - N/C – book says N/C but had some kind of pulsing on it
61 - LT (M.N. BP) matching network bypass


66 Pin Round connector, add these pins
62 - SQUELCH
63 - N/C
64 - N/C
65 - MIC
66 - GND

Related Files

Adobe PDF icon.png OM-107-10

Technical Manual
Radio Set
PRC-174
August 1976


Adobe PDF icon.png MA(P)-2124-09514-00

ILLUSTRATED PARTS BREAKDOWN
HF-SS r. RADIO SET
RT 936/PRC as174
January 1987