Hy-Gain 23 Plus Installation & Operation Instructions

23 channel citizen band transceiver

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23 CHANNEL CITIZEN BAND TRANSCEIVER

Plate Power Input

to Final:

Modul ation:

Harmonic Suppression:

Carri er Oevi ation:

Antenna Match:

Sensitivity:

Selectivity:

6KHz bandwidth -6 db

Intermediate FreQJency:

Image Rejection:

-75 db

Audio Output

External Speaker

Impedance:

12 volts DC

AC -80 watts

DC -3 1/2 amps rec.; 4 amps trans

Dimensions:

12"W x 5"H x 81/4"

Net Weight:

171bs.

The Hy-Gain 23 Plus is designed to receive AM signals in

the 26.965 to 27.255 MHz Citizens Band. The circuit

highly

sensitive

and selective

heterodyne type with one RF and two IF ampl ifiers.

23 channels, crystal-controlled

frequency-synthesized

circuit consisting of 12 crystals.

The receiver section includes an SMeter for reading signal

strerg~h, an adjustable squelch control to eliminate back-

ground noise when no signal is being received, an auto-

matic noise I imiter to s~ppress atmospheric and man-made

interference, and a band spread whi ch has a range of 2.5

KHz, which permits reception of stations that are trans-

ORDER NO.

603

5 watts

AM; up to 100% capacility

Bett(:!r than 55db down

Less than .005%

50-75 ohms

.8uV for 10db S+N to N ratio

1st IF-11.275MHz;

2nd IF-455KHz

4 watts

105-120 volts, 50/60 cycl es AC;

dual-conversion

super-

operation is provided by a

INSTAllATION

OPERATION

HY-GAIN

Rural Route 3

6BL8

6BA6

12AX7

6A05

6GH8

6BA6

VlO

6B05

V11

12An

01,02

1N60/1N34

1S1516

1S72

1001

1004

08,091004

010,011 1006

012

1006

is a

Full

The transmitter is designed to transmit AM signals in the

26.965 to 27.255 MHz Citizens Band. The crystal synthe-

sized circuit used in the receive section is common to,the

transmitter, and provides full 23 channel crystal-controlled

operation.

A push-to-talk

the reliable relay switching.

capability

is used with up to 5 watts plate power input to

the fi nal RF stage.

power at the antenna duri ng the transm it mode when the

meter switch is in the appropriate position.

INSTRUCTIOIS

ELECTRONICS

CORPORATION

Lincoln, Nebraska 68505

RF amp/1 st Mi xer

2nd Mixer/2nd Osc.

IF Amp (455 KHz)

1st Audio/Mvdulator/Mic

Audio Output/Modulator

Local Osc.

Converter/1st Osc.

Buffer Amp

RF Power Amp

Buffer /Synthesi zer

Meter Rectifier

Oet/AVC

ANL

Squelch bias

Mod. hooster

Mod. Iimiter

Absorber

B+ Rectifier

Bias Supply Rectifier

ceramic microphone control s

Plate modulation with.100%

An RF meter -jildi cates rei ati ve RF

Preamp

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Summary of Contents for Hy-Gain 23 Plus

Page 1 12"W x 5"H x 81/4" 010,011 1006 B+ Rectifier Net Weight: 171bs. 1006 Bias Supply Rectifier The Hy-Gain 23 Plus is designed to receive AM signals in the 26.965 to 27.255 MHz Citizens Band. The circuit is a highly sensitive and selective dual-conversion super- heterodyne type with one RF and two IF ampl ifiers.
Page 2: Dc Power Connection
CAUTION boat, etc., make certain to use a location which permits The Hy-Gain 23 Plus is designed for use only in vehicles the driver to operate the control s of the unit without inter- employing a negative ground system. Do not use in posi- ferring with his driving functions.
Page 3 at-.e ~ vertically po larized whip which can be ei1her When the red and black leads have been properly connec- .m.1 ed type, or a full quarter wave. 8od1 l\!Pes use a ted, the 8-pin connector of the DC power cord should then body of the vehicle as a ground piChe.
Page 4 1) Illuminated Meter -- indicates strength of incoming sig- nal in "S" units; or RF antenna power of the transmi tier. 10) Band Spread -- Enables you to "tune-in" stations that 2) Meter Selector Switch -- when in "S" position meter are off frequency.
Page 5 If the antenna and transmission line do not offer such a load, the meter reading will be inaccurate. Provision has been made for utilizing the Hy-Gain Z3 P_'S for public address operation. For PA, Connect an e;c:ter.,.,a' :'--= 4-8 ohm speaker...
Page 6 There are two pilot lamps used in the transceiver. One of Tubes may be checked in a do-it-yourself tube tester in a these is built into the meter, and the other provides illu- .heighborhood store, or may be taken to a·service shop for mination for the channel dial plate.
Page 7 depending upon crystal activity. The output from V7 A and receiver. Adjust the generator output frequency for maxi- the output from V7B produces a 38 MHz output in the plate mum output vol tage reading on the VTVM speaker circuit of V11B, T9 being tuned to this frequency.
Page 8 This transceiver contains a built-in adjustable network mlttlng location, and tune to one of the three lower TV series with the antenna. When tuned correctly, it sup- channels that hasa station-operating in your vicinity. presses television interference. This network is a filter you notice a "cross hatch"...
Page 9: Voltage Chart
VOLTAGE CHART 1. All readings taken with VTVM from chassis (negative) to point indicated. Input to transceiver set at 117 volts AC. Similar readings are obtained with 12.6 volts DC input. Transceiver set to channel 13. PA switch in CB position, VOLUME and SQUELCH at minimum (counter-clockwise), FINE TUNING in center (normal) position.
Page 10 "\7 ANT. 11275MHz 455 KHz 455KHz 455KHz V 2a PHONE AUDIO 1st MIXER 2ndMfXER IF AMP IF AMP DET, AVC 1st AUDIO OUTPUT MOD. AVC. 27MHz MIC. RF AMP 2nd XTAL MIC. SQUELCH 11.730MHz OSC. BANDSPREAO 7f" RANGE BOOST MODULATION 38 MHz 27MHz 27MHz...
Page 11 ,R251M C300.047 §~ ~> R27470K § " " ~C2~11 DC CORD ---'2VDC IN60 021N34A'IS34 .~--+ 03151516 OiIl F"U5EeA 041572 100 1"'SW05-01 ,'Y060 ' " g~Ig8:',~~8~t~8g~ NOTES o?3t8g~~gg~~i'~8J! res,stors a'e m ohms and 1/2watt unless otherwise s~lfied. TI~. All clIpscitors are ,n m,cro·far~ds and 50CV unless otherwise specified OJ 1 IOD6,'5WQ5B'V06G _ Su~)ecl to change In indiVidual...

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