JRC NRD-515 User manual

NRD-515
OPTION 1+2
INSTRUCTION MANUAL

List of con tents
Installation
and
adjustment
procedures
page
1+2
User's
manual
page
3+4
Option
l ,
circuit
diagram,
dwg
004-PCB-300-A-8409
page
5
option
l ,
component
location,
dwg
002-PCB-300-A-8409
page
6
Option
2,
circuit
diagram,
dwg
004-PCB-301-A-8409
page
7
Option
2 ,
component
location,
dwg
002-ptB-301-A-8409
page
8
Option
1+2,mechanical
installation,
dwg
003-NRD-OOI-A-8409
page 9
Option
2,
electrical
installation,
dwg
003-PCB-301-A-8409
page
10
Option
2 ,
electrical
installation,
dwg
003-NRD-002-A-8409
page
11
Option
7. ,
wiring
diagram,
dwg
003-NRD-003-A-8409
page
12

l PaS2
Nate: Tnfa
an page 2
Nate: Inf
an Page 2
Nate: Infa
an Page 2
l)
2 )
3 )
4)
5)
6)
7)
8)
9)
10)
l)
INSTALLATION AND ADJUSTMENT PROCEDURES
Remove the top cover of the NRD-515.
With the Front panel facing you, drill two hales
on the right ide of the NRD-515 frame, as indi-
cated on drawing 003-NRD-002-A-8409 (paqe 9 ).
Remove the following compnnents from the mein
circuit board: TR22, C280, C281, C282, C283, C284,
L123 by cutting the leads by means oF a cutter.
003-PCB-301-A-8409 (pagelO) .
lnstall option l (plug-in unit) as indicated on draw-
ing 003-PCB-301-A-8409 (pageiO).
Install option 2 as indicated on drawing 003-NRD-
001-A-8409 (page 9).
By means of a lowpower soldering iron,solder the wires
and coax cables from option 2 to the main print, the
VFO and monitor switch, as indicated on drawing 003-
PCB-301-A-8409 (page 10).
Mount the top cover of the NRD-515, without screws.
Remove the bottom cover of the NRD-515 and solder
the coaxial cables E and F, as indicated on drawing
003-NRD-002-A-8409 (page Il).
This completes the installation of the 2 options.
Mount the bottom cover of the NRD-515.
ADJUSTMENT PROCEDURE (option 2)
Remove the top cover of the NRO-515 and switch the
power on.
With the bandwidth switch on AUX; tune the receiver
around 00.0 kHz, until you get the highest S-meter
reading (between 59 + 40 dB to 59 + 60 dB).

a) Adjust L3 on max S-meter reading.
b) Adjust L9 on max S-meter reading.
2) This ~ompletes the adjustment of the 2 optjons.
3) Milllnt the top cover.
Instead of adjusting the receiver as explained
in l) you may choose a weIl known station with
Info.
stable "S" readings and adjust for max S-meter
adjustment
reading.
With each option N02 we supply the mounting hard-
Info. ware. The Option N02 may be installed using the
drilling screwholes on the main-board.(right side)
Info.
In case you want to save the components that have
removal
to be removed we advise you to unsolder them.
General comment:
The installation of the Option N02 requires no
technical radio skills. However, we believe the
installer should have same basic saldering skill~.

Page '
U 5 E R '5 M A N U A L
The option l + 2 from ESKA ELEKTRONIK A/S greatly improves
the selectivity and signal-to-noise ratio of your NRD-515
- providing - at the same time - a superb PLL-ECSS reception.
Selectivities
The comhination of option l + 2 provides you with the fol-
lowing selectivities:
Monitor switch on
6/60 dB shape factor 1/1.7
Bandwidth (kHz)
Pos l: 300 Hz
Pos 2: 1.4 kHz
Pos 3: 7..1 kHz
Pos 4: 4.5 kHz
Monitor switch off
6/60 dB shape factor 1/2.5
Bandwidth (kHz)
Pos l : 500
Hz
Pos
2:
1.6 kHz
Pos 3 : 2.4 I<Hz
Pos
4 : 6 kHz

he P L A M tuning procedure
The option 2 jncol'por8t('~; 8 I'IM'l (letector to be useeJ ~Ih n
the received broar!r.;lstinq station '(Jf'rf~rs From sel cti\
F8i1inq.
ln (j I' eJ o r t o tt J Il C i n [I ~j t il t j () fl 'j n t h" P l. !\tvl mu d e, p r o e e d
very cRreFulJy as Folluws:
a) Switrh 6 F in on posltion.
b) Modt' swi tell on I 'in or USB dependjn(~ on illtcr-
FerenCt'.
c ) S f' le c t 6 k Il z , or 2. 4 k Hzb nd "'I id t h, depf ~ rl rl( Il g on
jnterference, the monitor switch can either be N
o r OF
F, al s o de p (~n d i ng o n t he i n t e r Fe r e nc e Je \ e l .
d) Tune in carefully the eJesired frequency and a just
very slowly the 6. Fcontrol until the PLAM LED
(external VFO) lights up.
Please nate that the LED (external VFO) always
will light up if the carrier is not present or
iF you are too far away From the center frequency.
e) Slowly turn the PBT control in order to obtain .he
best reception with the highest intelligibilit>
f) In ca~e you re0erse sieJeband, please repeat the
procedure as indicated under step d and e.
Following fig. explains how the PLAM works.
CARRIER OF AM STATION
LOCKRANGE (, LED ON)
LED ON LEO ON
LEO OFF
LED OFF
(NO LOCK)
(NO LOCK) (NO LOCK)
(NO LOCK)
300 250 200 150 100 50
o
50
100 150 200 250 300
- HZ .. 4II.-----------t----------t.~ + HZ

-- - - - --- - -- - - --
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L1
82
L4
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B4
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B6
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ALTERNATivE
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B8
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COMPONENT SIDE
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RIGHT SIDE OF THE RECEIVER
WI TH T HE FRONT PANEL FACING YOU
AlS ESKA ELEKTRONIK
003 -NRD - 001- A- 8409
NRD - 515

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WITH
ALL
THE
NECESSAk'f
WIRES
AND
CA8LES
READY
FOR
SOLO~~ING
ITH
THE
CORRECT
LENGT
HS
A
YELlaw
l =
250
B
ORANGE
l=
250
C:
RED
L=
250
o:
BROWN
l =
250
K
BLUE
L=
80
O:
ORANGE
L=
180
p.
GREY
L=
100
N .!HITE L=
180
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COAX
L=
700
Gl
Hl
COAX
L=
250
OPTJON
2
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COAX
L=
170
2)
COAX
L=
200
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TOP
SIDE
OF
THE
RECEIVER
I1
h u
~~
'I
VFO
MONITOR
P
..
II
o .. 'I
REMOVE
:C28~
(281, (282,
C283,
(284,
K'"
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Lm,
TR22
003
-PCB
-301-A-8409
ESKA
ELEKTRONIK
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ESKA ELEKTRONIK 003-NRO -002-A-8409
NRD-S1S

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lo
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VIEW
OF
THE
RECEIVER
COAX
E,F
TOP
VIEW
OF
THE
RECEIVER
VFO
MONITOR
ESKA
ELEKTRONIK
003-NRO-003-Ä-8409
l,~
NRD-"i]"i
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