Hy-Gain Hy-Range IV 673B User manual

Your Hy-Range Model IV is a full 23-channel transceiver designed
and licensed for Class 0 Citizen Band operation as designated by the
Federal Communications Commission (F .C.C.).
The Hy-Range IV is completely solid state compact unit of high
reliability and low power consumption. This transceiver utilizes
a highly advanced, unique system of frequency synthesization enabling
immediate operation on all 23 channels without the need of additional
crystals or adjustments. Additional features include an ANL (Auto-
matic Noise Limiter) switch to reduce undesirable noises.
The Hy-Range IV transceiver is designed to operate from 120/240 VAC
50/60 Hz. To obtain the best results from your transceiver, it is
suggested that you read all the instructions contained in this manual.

CB Receiver Section
Circuit type dual conversion superheterodyne with
RF stage and 455 kHz ceramic filter
23 crystal-controlled channels in the
27 MHz Citizens Band
Sensitivity 0.7 f.1Vfor 10 dB (S + N)/N ratio
I frequency 1st IF: 11.275 MHz
2nd IF: 455 kHz
CB Transmitter Section
Frequency .
Power input .
RF Power output .
23 crystal-controlled channels in 27
MHz Citizens Band
5 watts
4 watts
Emission 8A3
Spurious response rejection all harmonic and spurious suppression
better than Federal Communications
Commission and Department of
Communications (DOC) requirements
Modulation AM, 90% typical
Range boost. . . . . . . . . . .. yields high average modu lation at
average voice levels.
Transmitting current drain .. less than 45 W
Antenna nominal 50 ohms impedance
Power source 120/240 VAC 50/60 Hz

Licensing your Citizens
Two-way Radio in the
United States
NOTICE: It is illegal to transmit with this transceiver until you obtain
your citizens two-way radio Class D license. You are also required to
read and understand Part 95 of the Federal Communications Com-
mission rules and regulations before operation of this unit. License
application Form 505 is packed with your transceiver and Part 95 of
the regulations may be available from your dealer; if not, you may
obtain copies from the Superintendent of Documents, Government
Printing Office, Washington, D.C. 20402.
It is also prohibited by the F.C.C. to adjust the transmitter circuit
of this unit unless you hold a current First or Second Class Radio-
telephone License.
We recommend that you refer all servicing of any Hy-Gain products
to your nearest Hy-Gain warranty service center or consult your
Hy-Gain dealer or distributor for the service center location nearest
you. Do not tamper with any internal adjustments or settings - - such
tampering can adversely affect the performance of your transceiver
or may, in fact, cause your unit to operate beyond the limitations
set forth for Class D citizens two-way transceivers by the F.C.C.
Power/Volume switch.
To turn the power on, rotate the knob clockwise. Further rotation
will increase the sound output from the speaker. To turn the power
off, rotate the knob counterclockwise until the click is heard indicating
the power is turned off from the power supply.
Squelch Control.
This control is used to eliminate annoying background noise at no
signal. To adjust the squelch control properly, first turn the knob
counterclockwise until background noise is heard. Then, rotate the
knob slowly clockwise until the background noise just disappears.
At this point, the receiver will be relatively quiet under no signal
conditions, but an incoming signal will overcome the squelch action
and be heard. Since this control is variable, it can be used to provide
varying degrees of sensitivity to incoming signals. As the control is
advanced from the extreme counterclockwise position the squelch
action is progressively increased and stronger signaIs are needed to
overcome it. To receive extremely weak signals or to disable the
squelch circuit, simply turn the control fully counterclockwise.
Fine Tuning.
This will be used for clear reception of stations that are slightly off
frequency. Rotate the knob for clearer reception.
AN L (Automatic Noise Limiter) Switch.
This switch, when placed in ON position, reduces undesirable noises.
Place the switch in ON position when the unit is used in noisy areas.

Phone Jack.
Use a headphone for private listening. Inserting the headphone plug
silences the internal speaker automatically.
MIC Jack.
Connect the push-to-talk microphone or the optional telephone hand-
set.
RF Gain.
This controls RF gain when receiving. To increase RF gain (reception
sensitivity) turn the knob clockwise and to decrease turn cou nter-
clockwise.
Channel Selector.
Continuously rotating switch selects anyone of 23 channels for
transmit and receive operation.
Signal Strength/R F Power Meter.
During reception, the built-in meter provides a relatfve indication of
signal strength in S units on the lower scale and offers a comparison
between one incoming signal and another.
During transmit, this wi II provide an indication of antenna RF power
on the upper scale. As you speak, the pointer should flicker
slightly, indicating that you are modulating the RF carrier.
AC Power Cord.
Connect the power cord plug to the AC outlet supplying 120 VAC,
50/60 Hz.
AC Power Fuse.
When replacing the fuse always use the same type fuse, 125 V, 3/4 A.
Remote Speaker Jack.
This will be used to control the built-in speaker when operating the
transceiver with the optional telephone handset connected.

Location
Before installing the transceiver choose the location which is protected
from moisture and excessive heat and is convenient to operate.
Power Connection
This transceiver is designed to operate from 120/240 VAC 50/60 Hz.
The unit is supplied wired for 120 VAC operation. For 240 VAC
operation please consult your dealer. Connect the power cord to
an AC outlet supplying 120 VAC.
Antenna Connection
The antenna should be connected to the transceiver by means of
coaxial cable. Either RG-58/u or RG-8/u coaxial cable may be used.
The cable should be terminated with a PL-259 coaxial connector.
Screw the PL-259 coaxial connector onto the antenna jack.
Caution:
Do not try to transmit without an antenna connected to the trans-
ceiver.
CB Transmitter Operation
IMPORTANT: Do not try to transmit without a CB antenna connected
to the antenna connector on the rear panel.
1. Connect the microphone to the microphone socket.
2. Turn channel selector to a desired channel.
3. Depress the push-to-talk button on the microphone. Hold the
microphone 4 to 6 inches from the mouth. Speak at a normal
level. During periods of transmission the receiver is silenced
and reception is therefore impossible. In the same way your
signal can not be heard by another station when he is transmitt-
ing. Each must take turns.
4. To receive simply release the microphone push-to-talk button.

If your receiver should need servicing under the warranty, contact
your Hy-Gain dealer for the Hy-Gain Service Center nearest you.
Please contact the Service Center before shipping your transceiver
to him. All equipment returned for warranty repair must be ac-
companied by your sales slip or invoice, or a copy of either.
Units that have been modified cannot be accepted for repair.
Include all information requested by the Service Center. Then pack
the unit as follows:
Check the unit to see that all parts and screws are in place. Then wrap
it in heavy paper or put it in a plastic bag. If the original carton
is not available, place the unit in a strong carton that is at least six
inches bigger in all three dimensions than the unit. Fill the carton
equally around the unit with resilient packing material (shredded
paper, excelsior, etc.). Seal it with gummed paper tape, tie it with
a strong cord, and ship it by prepaid express, United Parcel Service,
orinsured parcel post to the Hy-Gain Service Center.
It is very important that the shipment be well-packed and fully
insured. Damage claims must be settled between you and the carrier
and this can delay repair and return of the unit to you.
Parts can be purchased from the factory Customer Service Depart-
ment. All parts orders must be prepaid or COD. When ordering,
please supply the following information:
1. model number of the unit
2. serial number of the unit
3. description of the part
4. part number. (if available)
Address your letter to:
Hy-Gain Warranty
Service Department
4900 Superior Avenue
Lincoln, Nebraska 68505
Attn: National Service Manager

Hy-Gain Electronics Corporation warrants all products manufactured by it and bearingHy-Gain model
numbers to be free from defective material and workmanship under normal use and service and
agreesto repair such products. If investigation disclosesthe defect to be the fault of our manufacture.
Hy-Gain's obligation under this warranty is limited to repairing any such product which, upon our
examination, provesto be so defective. All products repaired under such warranty must be returned
to the Hy-Gain factory, transportation prepaid by the purchaser,within ninety days from the date
of purchase.. 9
This warranty applies only to the original purchser. Upon receipt of equipment, the buyer is
responsiblefor checking the contents for damage. Any shipping damageshould be referred to the
carrier.
This warranty does not apply to any Hy-Gain products which have been repaired, worked on, or
altered by personsnot authorized by Hy-Gain to do so, or products to which the repair has injured
the stability or reliability of such product, or which has been the subject of mis-use,negligence,or
accident, or the serial number of which has been removed, altered, effaced, or in any other way
rendered unidentifiable. Neither does this warranty apply to any of our products which havebeen
connected, installed, used,or otherwise adjusted other than in accordancewith instructions furnished
by Hy-Gain. Nor does Hy-Gain Electronics Corporation assumeany liability for consequentiai
damages,and in any event, our liability shall in no case exceed the original purchaseprice of the
product.
Accessoriessupplied by, but not manufactured by Hy-Gain Electronics Corporation, shall carry only
such warranty as is availablefrom the manufacturer of such goodsand are specifically excluded from
Hy-Gain warranties.
This warranty is void if Hy-Gain shall inspect equipment and find that it has been modified, or
improperly installed or used. This warranty is expressly in lieu of all other warranties. Expressed
or implied, and all other obligations or liabilities on the part of Hy-Gain. No person, including any
dealer, agent, distributor, or representative of Hy-Gain is authorized to assume for Hy-Gain any
liability on its behalf, or in its name,except to rerer purchasersto this warranty.
Warranty ServiceDepartment
Hy-Gain Electronics Corporation
4900 Superior Avenue
Lincoln, Nebraska 68505
You must mail the warranty card in immediately. Then, in makinga claim, you needonly furnish the
model and serial numbersof the unit. However, if for some reasonthe card was not mailed, a copy
of a document, such as a salesreceipt, recording the date, place, and proof of purchasemay, at the
discretion of the service department, serveto establish your warranty. Your warranty claim letter
should include all pertinent details, along with the part or item numbers involved. Do not return
anything until requestedto do so. You must supply the above information.
Any returned items must have prior authorization. Unexpected returns are greatly delayed in
handling. These delays can be avoided by writing in advance,furnishing the necessaryinformation.
Hy-Gain reservesthe right to make changesin design and improvements on its products without
assumingany obligation to install the sameon any of its previously manufactured products. Further,
Hy-Gain reservesthe right to ship new and/or improved products which are similar to the form, fit,
and function of products originally ordered.

~D DE PUERTO RICO