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JAPAN RADIO CO. JRC
NRD-525-535-545-345
User Define Charts

As I cannot supply you with schematics or owners manuals for these sets (sorry). I do have the user define function lists for the NRD-525, NRD-535, NRD-345 and of course the NRD-545. So if you scare up one of these sets up in the used market and have no manual, at least you will have this information via my piles of papers. Be sure and visit the main page as the NRD-545 and NRD-345 are covered elsewhere on this site . Dave N9EWO.


# JRC NRD-525 User Defined List
(this chart via n9ewo)
0 SSB Offset (serial numbers BR 36471 and above only)
1 Display 10 Hz Digit
2 Clock Colon
3 Keyboard Beep
4 Bandpass Filters (pass)
RUN Tuning Speed (serial numbers BR 36771 and above only)
# JRC NRD-535 User Defined List
(press MEMO + FUNCTION + ENT/khz)
(Use ENT/khz + Knob or Keys to select)
Values



(this chart via n9ewo)
1 Operation of Timer Relay 0: Normally OFF 1: Normally ON 2: ON/OFF according to Squelch status
2 Input Tuning Circuit (Filters) 0: Pass (shows on display) 1: Filters ON
3 BFO Offset Frequency in CW Mode -5000 to +5000 Hz
4 RTTY Baud Rate 37 to 75 Baud
5 RTTY Shift Width 0: 170 Hz 1: 425 Hz 2: 850 Hz
6 RTTY Polarity 0: Reverse 1: Normal
7 Display of S-Meter 0: Single Line Display 1: Bar Graph
8 SSB Display Frequency 0: Display Shift 1: Local Shift
9 Display of 10 Hz Digit 0: NO 1: YES
10 Clock Colon (Blink Toggle) 0: NO 1: YES
11 Beep Tone 0: OFF 1: ON
12 Scan Rate 0.5 sec/channel to 5 sec/channel
13 Sweep Rate 0.5 sec/step to 5 sec/step
14 Output of RTTY demod. 0: OFF 1:ON
15 Auto Stop (AS) Function 0: OFF 1: ON
16 Pulse Rate of Tuning Encoder (speed) 0: 250 pulses/rev. 1: 1000 pulses/rev
# JRC NRD-545 User Defined Functions Values

(this chart via n9ewo)
1. 1 Hz tuning(SSB/CW/RTTY/AM frequency of less than 30 MHz) 0: 1Hz not added to tuning step OFF 1: 1Hz added to tuning step
2. 10kHz tuning(SSB/CW/RTTY/AM frequency of less than 30 MHz) 0: 10kHz not added to tuning step 1: 10kHz added to tuning step
3. 1 kHz tuning(SSB/CW/RTTY/AM/FM frequency of less than 30 MHz) 0: 1KHz 1: 5kHz 2: 6.25kHz 3: 9kHz tuning step
4. 100 Hz tuning(FM mode/AM Frequency of more then 30MHz) 0: 100Hz not added to tuning step 1: 100Hz added to tuning step
5. 5 kHz tuning(Frequency of more then 30MHz) 0: 5kHz 1: 6.25kHz 2: 9kHz tuning step
6. 10 kHz tuning 0: 10kHz 1: 12.5kHz 2: 20kHz 3: 25kHz 4: 30kHz 5: 50kHz tuning step
7. Tuning step automatic selection 0:Automatic tuning step OFF 1:Automatic tuning step ON
8. Number of tuning knob pulses 0: 1000 pulses/turn 1: 500 pulses/turn 2: 250 pulses/turn
9. Meter indication 0: Single Display 1: Bar display 2: Peak Hold Display
10. Beep tone 0:Beep OFF 1:Beep ON
11. Scan auto stop 0: AUTO STOP OFF 1: AUTO STOP ON
12. Unwritten channel skip 0: Skip OFF 1: Skip ON
13. Timer relay operation 0: Timer relay OFF 1: Timer relay always ON 2: Controled with Squelch
14. CW mode BFO offset frequency -2550 to +2550(Hz) (10 hz steps)
15. RTTY baud rate (baud) 37-75(baud)
16. RTTY shift width 0: 170Hz 1: 425Hz 2: 850Hz
17. RTTY polarity 0: Reverse 1: Normal
18. SSB display frequency 0: Display shift 1: Local shift
19. Display time colon blinking 0: Colon blinking OFF 1: Colon blinking ON
20. Scan rate 0.3-5.0(sec.)0.5 sec./CH
21. Sweep rate 0.05-0.5(sec.) 0.05sec./step
22. Scan auto stop time setting 0 to 10 seconds (0.5sec.steps)
23. RTTY decoding output 0: Do not output 1: Output
24. Input tuning circuit 0: Pass 1: Use
25. RTTY unshift ON space 0: OFF 1: ON
26. RTTY error display 0: Display space 1: * Display
27. Filter Hold of Noise Reduction (change in text from eariler manual--was called "Line Enhancer") 0: ON 1: OFF
28. Panel lock 0: Lock tuning knob 1: All dials and buttons
29. Noise reduction next number change 0.0000 (effect) to 0.0255 (No effect) in 0.0001steps
30. Beat canceller next number change 0.0000 (effect) to 0.0255 (No effect) in 0.0001steps
31. Squelch LED lighting change 0: Lights when squelch is closed 1: Lights when squelch is open
32. Digital IF Filter setting slope 0: DSP SHARP filter 1: DSP LOOSE filter

FUNCTION +
(Repeat To Reverse Setting)

JRC NRD-545 "Function" Button Operations
(this chart via n9ewo)

BWC

Changes BWC Step (either 10 or 100 Hz)

ATT
(not listed in manual)
(discovered by Dave N9EWO)

Quick toggle of #24 above "Input tuning circuit", Useful when scanning memories..no relay chattering. (May not work on all samples ??)

ENT/kHz

Enter User Defined Functions (Above)

CH

Memory Channel Save

FM/WFM

Turn Stereo Mode ON/OFF (FM Wide Mode with CHE-199 Option Installed)

CLOCK

Set Sleep Time

VFO

Transfer Memory InformationTo VFO
PUSH AND HOLD AT POWER UP
(Power OFF and Repeat To Reverse Setting)
JRC NRD-545 "Power Up" User Defined Functions
(this chart via n9ewo)

"."
(Peroid on Keyboard)

Unknown, but the display will show a number like "12 46 13" (varies). Will not receive while in this mode. Just rotating the main tuning knob will restore the set to normal.

ENT/kHz

Toggles "Low End" Receive Range Down To 10 kHz.

USB/LSB
+
CW/RTTY

Allows USB/LSB and CW/RTTY Modes To Be Selected When CHE-199 Converter Is Installed.

CLR

Memory Channel RESET (WARNING:Clears All Memories) and User Defined Functions To Default Settings.

CLR
+
CH

Resets User Defined Functions To Defaults.(Keeps Memory Channels As They Were)

CLOCK
+
ENT/kHz

Toggles Seconds Display On Clock
PUSH AND HOLD AT POWER UP
(Power OFF and Repeat To Reverse Setting)
JRC NRD-345 "Power Up" User Defined Functions
(this chart via n9ewo)

MODE

Toggles Keyboard "Beep" from Speaker (on/off)

mtr

Resets all "Meter Band" data

FILTER

Adds "AUX" Filter Selection

CLR

Initializes VFO and Other Settings to Factory Defaults
(does not clear Memory Channels)

MEMO

Clears all Memory Channels

AGC

Adds AGC "OFF" Selection

NOTE: BELOW CHART IS FOR THE NRD-535 .

Jumper
JRC NRD-535 "CDC-493AD CPU Board" Resistor Jumpers
(this chart via n9ewo)

RJ0

Removing this jumper changes the bandwidth selector switch so that the filter in the "Aux" spot is selected to the "Narrow" spot, and the "Narrow" to the "Aux" (A Flip-Flop).

RJ1

Not Installed in USA version (No Jumper), Unknown

RJ2

Not Installed in USA version (No Jumper), Unknown

RJ3

Unknown

RJ4

Unknown

RJ5

Alt "FREQ" button. Normally frequency selected during "CHAN" mode remains on display after "FREQ" button is used. Remove this jumper and previous frequency will re-appear when "FREQ" button is hit.

RJ6

AGC "OFF" bypass. When removed , will ONLY be able to select AGC FAST and SLOW. Will be unable to select AGC OFF.

RJ7

Clock seconds display. When removed, clock display will also seconds (also seconds on computer inteface).

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