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World of Ham Radio 1997
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WOHR97_AmSoft_(1997-02-01).iso
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1997-02-01
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==============================================================================
K E N W O O D
>>> A M A T E U R R A D I O S E R V I C E B U L L E T I N <<<
==============================================================================
Kenwood Service Centers
Kenwood Service Corporation Kenwood Service Center, East
2201 East Dominguez Street 829 Lynnhaven Parkway, Suite 130
Long Beach, California 90801 Virginia Beach, Virginia 23452
Telephone 1-310-639-5300 Telephone 1-804-340-1702
==============================================================================
BULLETIN # 62
MODEL: DG-5/DK-520
SUBJECT: USE OF UNIT WITH TS-511/TS-900/T599
DG-5, DK-520 ADDENDUM FOR USE WITH SERIES TS-511, TS-900, AND T/R-599.
The DG-5, DK-520 package was primarily designed for the TS-520
transceiver. Their use with other Kenwood products requires certain
alterations to the installation procedure included with the DK-520
kit. General power supply, and specific wiring considerations will
be detailed.
POWER SUPPLY (All models)
A. DC Supply; a source of 13.8V, @1.5A min, may be directly
connected to the DG-5. An AC Xfrmr, 12-16V, @ 1.5A may be wired to
the DK-520. Direct wiring to Kenwood power supplies (PS-3, PS-5,
and PS-6 for example) is also possible.
B. Power supply ripple must not exceed 4V P-P under load.
TOOLS REQUIRED (Additional to those listed for the DK-520 installation:
1. Electric drill and bits.
2. Hi-Z RF VTVM capable of measuring .1V to 5V.
MOUNTING, TS-511
DK-520 will be mounted between the screen switch and RF and bias
pots on the rear panel, over the ground screw terminal, which will be
used for support.
A. Remove DK-520 cover (3 screws). Mark and drill 4mm hole in
rear cover to mate with TS-511 ground terminal screw. Mount cover
using ground screw, and install DK-520 in place.
B. Mount supplied Buffer unit (X44-1210-00) between stand up
filter caps C2, C3 (1000uF x2), and Driver PCB (X47-0005-01), using
existinq screw nearest "R1", and "V1". buffer foil towards filters.
1. Remove JJY & NOR leads from buffer.
2. Connect GND Black lead to driver GND near "R1".
3. Connect 14V Red lead to "C3", passing lead through
existing hole between RIT & RF gain controls.
4. Connect the JJY terminal to the "OP" terminal through
three (3) series wired lpf caPs, 50wv each. DO NOT WIRE
DIRECT!!!
C. Coaxial cables must first be trimmed. DON'T LOSE THEIR IDENTIFICATION.
Blue banded coax, Het input (HEI) trim to 450mm.
Black banded coax, CAR input (CAI), trim to 420mm, save cut length.
Red banded coax, VFO input (VFI), lenqthen to 360mm.
Route the cables along the final enclosure right hand side, facing
the rear of the unit.
1. VFI cable to VFO (X40-0016-05) coax output.
2. CAI cable to Carrier coax output.
3. HEI cable to Buffer PCB output and ground terminals.
D. Check mechanical work, and solder connections. Using a HI-Z
RF Voltmeter, check for min/max voltages as specified; taking all mea-
surments at the end of DK-520 output cables, before plugging into DG-5.
VFO 0.3V +/- 3dB, MAX 5 Volt.
CAR 0.3V +/- 3dB, MAX 5 Volt.
HET 0.15 to 0.3V, MAX 5 Volt.
If levels are not within nominal limits, adjust either the voltage di-
viders R1-R4 in the DK-520, or for HET adjustment, series capacitors
between JJY and OP terminals, by substitution.
E. Adjust all oscillator coils to compensate for drive output
loading. Using ALC indicator, tune each band 1/2 turn back from osc
dropout. DO NOT TUNE FOR MAX.
MOUNTING, TS-900
A. Using supplied hardware, mount DK-520 over ground screw ter-
minal. RTTY jack may be removed and the hole used as a convenient
cable entry. Insulate and secure the RTTY jack. Protect against
accidental shorting.
Cable length VFI 470mm
Cable length HEI 550mm
Cable lenqth CAI 260mm
B. Mounting and wiring the Buffer Unit.
Mounting:
1. Remove NOR & GND leads.
2. Remove JJY brass cap only.
3. Mount the buffer,component side up, between the load shaft
and RF unit, allowing clearance for the screen supply
switch. Sweat-solder the bracket to the mixer coil shield.
Wiring:
Buffer 14V to RF 9V
JJY (yel) to TPI RF unit
C. Cables: VFO,fix unit terminals 23,25.
CAR; CAR/AVR unit terminals 19,21.
HET; HET osc/coil pack output & GND.
D. Levels check: Same as the TS-511, excluding the HET
capacitors adjustment.
Note on R-599 Operation: R-599 must be in "transceive" mode to read
both RX and TX frequency. If operated in "seperate" mode, only RX
frequency will be read.
Power to drive the DG-5 cannot be taken from the R-599. An external
AC transformer, or DC supply, may be used. Or, power may be taken from
the T-599 X43-0011-00 power supply 14V output terminal. Either (or both)
pins 2 or 5 of the transceive connector may be used to deliver power
through an added cable into the R-599, and thence to the DK-520.
MOUNTING, R-599
A. May be mounted over a converter antenna port if no conver-
ters are installed. Otherwise, mount between serial plate and H.F.
antenna input connector. Antenna connector port may be used as cable
entry, otherwise, drill and deburr rear panel (and chassis) for cable
access.
B. (Buffer unit not used.)
C. Coaxial cable connection
1. VFI to VFO Pin #1 transceive connector.
2. CAI to carrier output (X50-0002-00) or carrier input
(X48-0011-00) IF unit.
3. HEI to HET Pin #8.
D. Check levels as listed, TS-511 section.