Grundig Yb400 Hf Reciever Manual

							HOW CAN I DETERMINE IF AN OUTDOOR ANTENNA
WILL HELP?
While inside your normal listening environment, tune in a rela-
tively weak shortwave signal. Staying tuned to this signal, step
outside and away from your building. If the signal strength
increases significantly, an outdoor antenna will help considerably.
If there is little or no improvement in signal strength, an outdoor
antenna will help; however, the amount of improvement will
depend on the type of antenna used. If you have questions about
outdoor antennas, call Grundig technical support.
WHAT TIME STANDARD IS USED IN SHORTWAVE
BROADCAST SCHEDULES?
Since there are many different time zones around the world, it
would be impractical for shortwave broadcasters to give broad-
cast times for each separate time zone. To simplify matters, they
list their broadcast schedulesCAN DISTANT AM/FM BROADCAST STATIONS BE
RECEIVED?
FM is strictly for local stations. Daytime AM stations usually have
a maximum distance of 50-100 miles. At night, AM broadcast
signals can sometimes be heard over much greater distances,
hundreds of miles away.
HOW IS IT THAT BROADCASTS FROM AROUND THE
WORLD CAN BE HEARD ON A SHORTWAVE RADIO?
Shortwave radio can be heard around the world because of the
earth’s ionosphere. Think of the ionosphere as a cloud-like layer
enshrouding the earth at an altitude of 140-250 kilometers (90-
160) miles). It consists of electrons and ions, the density of which
are governed by the sun and the earth’s geomagnetic forces.
Radio waves virtually bounce their way around the earth, bounc-
ing off the ionoshpere, back down to earth, often repeating this
process several times. The low angles at which this takes place
enable the radio waves to travel great distances with each
bounce. This whole process is called radio wave deflection and
ionospheric propagation.
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							in Coordinated Universal time (UTC), also known as Greenwich
Mean Time (GMT), World Time and Zulu Time.
Just what is UTC? It is the time in Greenwich England with no
correction for daylight savings time, and is always stated in 24
hour format. In North America, UTC is ahead of our local time, 5
hours EST, 6 hours CST, 7 hours MST, 8 hours PST; one hour
less during the months of daylight savings time. So, if a broadcast
starts at 20:00 hours UTC, this correlates to 15:00 hours (or
3PM) Eastern Standard Time, and 12:00 hours (Noon) Pacific
Standard Time.
To determine Coordinated Universal Time, tune-in to a major
station, such as BBC London, on the hour. If your shortwave
radio tunes to the following frequencies, UTC can be heard each
minute on station WWV in Fort Collins Colorado: 20000 KHz,
15000 KHz, 10000 KHz, 5000 KHz and 2500 KHz. Usually,
during any time of the day, one or more of these frequencies can
be received in North America. UTC can also be heard on the
Canadian station CHU, at 3330 KHz, 7335 KHz, and 14670
KHz.
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							SHORTWAVE GUIDES AND MAGAZINES AVAILABLE
IN BOOKSTORES
If you cannot find these publications locally, call our toll-free
number. We will help you find them.
PASSPORT TO WORLD BAND RADIO,
International Broadcasting Services, Ltd., Box 300,
Penn’s Park, Pennsylvania 18493. (EASIEST TO USE FOR
BEGINNERS). Published annually in early September.
WORLD RADIO TV HANDBOOK
Billboard Publications, Inc., 1515 Broadway, New York, N.Y.
10036. Published annually in January.
MONITORING TIMES,
Grove Enterprises, Inc., 140 Dog Branch Road,
Brasstown North Carolina 28902.
Phone (704) 837-9200. Monthly Magazine.
POPULAR COMMUNICATIONS
CQ Communications, Inc., 76 North Broadway,
Hicksville, NY 11801-2953.
Phone (516) 681-2922. Monthly MagazineCOMPANIES SPECIALIZING IN SHORTWAVE RADIOS,
ACCESSORIES, ANTENNAS, MAGAZINES, BOOKS,
ETC.
Call Grundig for Information
22 
						

							GETTING STARTED WITH SINGLE SIDEBAND (SSB); MARITIME & AERONAUTICAL WEATHER AND COM-
MUNICATION FREQUENCIES; HAM RADIO COMMUNICAATION FREQUENCIES; TIME SIGNALS
High end shortwave radios, such as the Grundig YB400PE, have
a feature called SSB, a highly efficient way of electronically
processing transmitted and received signals for two-way commu-
nication. Examples of this are amateur radio (hams), maritime, and
aeronautical communication. Either upper side band (USB) or
lower side band (LSB) can be used.
Receiving SSB signals is not always easy. Since this is two-way
communication, transmissions are often very short and sporadic.
Also, most two-way communication uses relatively low power, 50
to 1000 watts. The amateur radio operators are easiest to find;
the others can be very difficult. Signals are also affected by the
eleven year sunspot cycle. Signals will be poor through 1996 then
the signals will get continually better until peaking in 2002 when
reception will be excellent. Overall, very good reception can be
expected from about 1998-2005.
Finding SSB signals can be like seeking a “needle in a haystack”,
so be patient! The easiest place to find SSB communication is at
night in the amateur band shown below at 3700-4000 KHz.HOW TO TURN THE SSB FEATURE ON
1. Slide the SSB switch (right side of radio) to the ON
position.
2. Use the STEP button to select 1 KHz tuning steps.
“STEP 1” will display in the lower right of the display.
3. Put the FINE TUNING control knob (right side of the
radio) in its center position.
4. Use the FIND TUNING control knob to fine tune
signals.
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							Below are some selected frequency ranges on which SSB communication can be found. All frequencies are shown in Kilohertz.
AMATEUR RADIO
3700-4000, LSB, night.
7150-7300, LSB, night.
14150-14350, USB, day.
21150-21450, USB, day.
AERONAUTICAL (usually USB)
2850-3155
3400-3500
4650-4750
5480-5730
6525-6765
8815-9040
10005-10100
11175-11400
13200-13360
15010-15100
17900-18030
21870-22000
23200-23350MARITIME (usually USB)
4063-4438
6200-6525
8195-8815
12230-13200
16360-17410
18780-18900
19680-19800
22000-22720
25070-25110
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							2670 U.S. Coas t Guard 6753 CAN: St. John’s  NF; eac h hr + 40 min
2863  Oak land, CA; 5,10,35,40 min past hr. 8722 Ft. Lauderdale, FL;0100, 1300, 2300
2863 Honolulu., HI; 24 hour 8749 Manahawk in, NJ; 1200-2200
3485 New York , NY; 24 hour 8764 U.S. Coas t Guard
4363 Ft. Lauderdale, FL; 0100,1300,2300 8764 Virginia: 1130, 1600, 2200, 2330
4387 Manahawk in, NJ, 1200, 2200 8764 Virginia: 1730 UTC
4402 Invernes s , CA; 0000, 1200 8761 Virginia: 0400, 0530, 1000
4426 U.S. Coas t Guard 8828 Oak land, CA; 5, 10, 35, 40 min past hr.
4426 Virginia; 0400, 0530, 1000 8828 Honolulu, HI; 24 hr. 
5547 USB, Aeronautical 8843 USB, Aeronautical
5733 CAN; Edmtn AB, eac h hr. + 20 MIN, 2300 10051 New York , NY; 24 hr.
1200 6501 U.S. Coas t Guard 10051 CAN: Gander NF; 25, 30, 50, 55 min pas t hr.
6501  Virginial 1130, 1600, 2200, 2330 12382 Oak land, CA; 5, 10, 35, 40 min past hr.
6501  Virginial 0400, 0530, 1000 13083 Invernes s , CA; 0000, 1200
6604 New York , NY; 24 hour 13089 U.S. Coas t Guard
6604 CAN; Gander NF; 25, 30, 50, 55 min pas t hour 13089 Virginia: 1130, 1600, 2200, 2330
6679 Oak land , CA; 5, 10, 35, 40 min. past hr.  13089 Virginia: 1730 UTC
6679 Honolulu, HI; 24 hr.  13092 Ft. Lauderdale, FL;0100, 1300, 2300
6753 CAN: Trenton On; eac h hr. + 30 min 2300-1200 13270 USB, Aeronautical
MARITIME SSB WEATHER FREQUENCIES
(kilohertz; USB; times in UTC/GMT
25 
						

							13270 New York , NY; 24 hr.
13270 CAN: Gander NF: 25, 30, 50, 55 min pas t hr.
13282 Honolulu, HI; 24 hr.
13300 USB, Aeronautic al
13345 USB, Aeronautic al
15035 CAN: Edmntn AB; eac h hr + 20 min, 2300-1200
15035 CAN: Trenton ON; each hr + 30 min, 1000-0100
15035 CAN: St. John’s  NF; each hr + 40 min 1200-2300
17242 Ft. Lauderdale, FL; 0100, 1300, 2300
17314 U.S. Coas t Guard
22738 Ft. Lauderdale, FL; 0100, 1300, 2300
TIME STATIONS (not SSB)
CHU time (Canada) 3330 Bes t at night
CHU time (Canada) 7335 Day /Night
CHU time (Canada) 14670 Bes t during day light
W W V-time/weather (US) 2500 Bes t at night
W W V-time/weather (US) 5000 Bes t at night
W W V-time/weather (US) 10000 Day /Night
W W V-time/weather (US) 15000 Bes t during day light
W W V-time/weather (US) 20000 Bes t during day light
26MARITIME TWO-WAY COMMUNICATION FREQUEN-
CIES AND CHANNELS
(Frequencies in KHz; channels are in parantheses; usually USB)
Search and Rescue: 2182, 3023, 5680
Survival Craft: 8364
Distress: 4125, (4S) 6215 (6S), 8291 (8S), 12290 (12S),
16420 (16S)
DSC Distress (Digital Selective Calling): 2187.5, 4207.5, 6312,
8414.521, 16804.5
MSI Broadcasts (Marine Safety INfo, TRRY): 4210, 6314,
8416.5, 12579, 16806.5, 19680.5, 22376, 26100.5
Ship to Ship/Shore: 2065, 2079, 2096, 4146 (4A), 4149 (4B),
4417 (4C), 6224 (6A), 6227 (6B), 6230 (6C), 8294 (8A),
8297 (8B), 12353 (12A), 12356 (12B), 12359 (12C), 16428
(16A), 16531 (16B), 16534 (16C), 18840 (18A), 18843
(18B), 18884, 21159 (21B), 22162 (22C), 22165 (22D),
22168 (22E), 22171, 25115, 25118 
						

							accessories, including books on SSB communication. Among the
accessories are a variety of professionally engineered shortwave
antennas which will significantly improve signal strengths and
reception.
MONTHLY MAGAZINES WITH SSB RELATED INFOR-
MATION AND ARTICLES:
These magazines are available from bookstores and magazine
displays.
MONITORING TIMES,
Grove Enterprises, Inc., 140 Dog Branch Road,
Brasstown North Carolina 28902.
Phone (704) 837-9200. Monthly Magazine.
POPULAR COMMUNICATIONS
CQ Communications, Inc., 76 North Broadway,
Hicksville, NY 11801-2953.
Phone (516) 681-2922. Monthly MagazineAMATEUR RADIO MARITIME
3815 Caribbean
3930Puerto Rico weather
3964East Coast waterway net
3968 West Coast AM/PM marine nets
7233Recreational vehicle service net
7237Carribbean maritime mobile net
7238Baja maritime West Coast net; 8AM
7264 East Coast Waterway Net
7294AM/PM West Coast mariner’s net;
8AM, 7PM
8294, 12359, 2100UTC, weather
14313 24 hr. maritime mobile help; 8PM Hawaii
net
14340 West Coast “Manana” net; 11AM
21402 PM maritime mobile nets; 3PM
28333 Gordon West net
GETTING MORE INFORMATION ABOUT SSB COMMU-
NICATION
Please contact Grundig by phone. We will guide you to resources
such as companies with excellent catalogs full of shortwave
27 
						

							BATTERY REQUIREMENTS
Six AA batteries (alkaline for best results)
AC ADAPTOR
Output of 9 volts DC, negative polarity (tip negative); 300
millampere current capability; coaxial plug outer diameter of 5.5
millimeter, inner diameter of 2.1 millimeter. NOTE: Using a plug
tip diameter smaller than 5.5 millimeter may not cut off voltage to
the battery compartment and can cause batteries to overheat,
leak and destroy circuits. This will void the warranty.
EARPHONE/HEADSET SOCKET
Standard earphones/headphones with stereo plug, 3.5 millime-
ters or 1/8 inch.
EXTERNAL ANTENNA SOCKET:
3.5 millimeter or 1/8 mono plug.TUNING STEPS
AM (MW): 1 KHz / 9 KHz / 10 KHz
FM: 50 KHz
SW: 1 KHz / 5 KHz
LW: 1 KHz / 9 KHz
INTERMEDIATE FREQUENCIES
FM: 10.7 MHz
AM (MW), SW, LW: 55.85 MHz, 455 KHz
AUDIO OUTPUT POWER:
600 milliwatts
FREQUENCY RANGES
AM (MW):520-1710 KHz @ 10 KHz steps;
527-1606 KHz @ 9 KHz STEPS
FM: 87.5-108 MHz
LW: 144-351 KHz
SW: 1600-30000 KHz (1.6-30 MHz)
TECHNICAL INFORMATION
28 
						

							INDEX TO THE RADIO’S  CONTROLS (batteries, switches & sockets).
CONTROL P AGE CONTROL P AGE
AM BUTTON 4, 6, 8 RESET hole 8
AUTO button 13 SLEEP button 14
AUTO TUNING button 6, 9, 10 SNOOZE 8, 13, 14
DC 9V socket 5 SSB - ON/OFF switch 23
DX/LOCAL switch 1, 4 STEP button 4, 6, 8, 23
EARPHONE socket 7, 28 STEREO/MONO switch 7
FINE  TUNING k nob 4,  23 S TORE  but t on 11
FM button 6 SW EXT.ANT. Socket 1, 5
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