SB-610   Monitor Scope
----------------------

The Heathkit SB-610 is a convenient instrument for use with an amateur
radio station to monitor "on-the-air" signals. The Scope can be used on
any amateur band or other frequency from 160 through 6 meters without
additional tuning or modification.

The primary function of the Monitor Scope is to display the transmitted
signal pattern, RF envelope, RF trapezoid, or RTTY cross pattern. It can
also be used to monitor radio signals from other stations when used in
conjunction with a receiver.

A 2-tone generator (1500 and 1950 Hz sine wave audio oscillators) is built
into the Scope for simple sideband adjustment and other test purposes. The
Scope also has a special one-piece shield for the CRT to minimize the effects
of stray magnetic fields on the trace.

The cabinet and front panel styling matches that of the Heath SB Series.


                                SPECIFICATIONS
                                --------------
VERTICAL AMPLIFIER
------------

Input Resistance. . . . . . . . . . . . 100 kOhms

                               Sensitivity Chart

     Optional Frequency Inputs          Nominal input voltage (rms) per inch
                                        of vertical deflection
     -------------------------          ------------------------------------

           | 10 Hz to 400 Hz            2.0 v
   Untuned | 400 Hz to 10 kHz (RTTY)    1.0 v
           | 10 kHz to 455kHz           500 mv

           | 455 kHz                    70 mv
           | 1600 to 1680 kHz           200 mv
           | 2075 kHz                   200 mv
           | 2215 kHz                   200 mv
     Tuned | 2475 kHz                   200 mv
           | 3000 kHz                   400 mv
           | 3055 kHz                   400 mv
           | 3395 kHz                   500 mv
           | 5000 to 6000 kHz           600 mv


HORIZONTAL AMPLIFIER
--------------------

Frequency Response. . . . . . . . . . . +-3 db from 33 Hz to 15 kHz

Sensitivity . . . . . . . . . . . . . . 800 mv per inch deflection

Input Resistance. . . . . . . . . . . . 1 megohm

SWEEP GENERATOR
---------------

Recurrent Type. . . . . . . . . . . . . Sawtooth produced by internal generator

Frequency . . . . . . . . . . . . . . . 15 to 200 Hz (variable)

TONE OSCILLATORS
----------------

Frequencies . . . . . . . . . . . . . . Approx. 1500 Hz and 1950 Hz

Output Voltage. . . . . . . . . . . . . 50 mv (nominal)

GENERAL
-------

Frequency Coverage. . . . . . . . . . . 160 through 6 meters (50-75 ohm coax)

Signal Power Limits (rear coax conn.) . 15 watts to 1 kw

Tube Complement . . . . . . . . . . . . 1 - 3RP1 CRT, medium persistence (green
                                            trace with screen filter).
                                        1 - 6BN8 clamper, low level RF detector
                                        1 - 6C10 sweep generator, horizontal
                                            amplifier.
                                        1 - 6J11 twin phase-shift tone generator
                                        1 - 6EW6 vertical amplifier
                                        1 - germanium diode, sync rectifier
                                        4 - silicon diodes, B+ rectifiers
                                        2 - Selenium diodes, HV rectifiers

Front Panel Controls. . . . . . . . . . Sweep
                                        Sweep Frequency - pull for Clamp
                                        Tone Generator
                                        Horizontal Gain
                                        Horizontal Position
                                        Vertical Gain
                                        Vertical Position
                                        Focus
                                        Intensity - AC Off

Rear Panel Control. . . . . . . . . . . Transmitter attenuator. Attenuates
                                        to 24 db at approx. 8 db per step.

Power Supply. . . . . . . . . . . . . . Transformer operated; fused at
                                        1/2 ampere.

Power Requirements. . . . . . . . . . . 105-125 or 210-250 VAC, 50/60 Hz, 35 watts.


Cabinet Dimensions. . . . . . . . . . . 6-5/8" high x 10" wide x 11-1/8" deep.
Net Weight. . . . . . . . . . . . . . . 9 lbs. 10 oz.

(Data taken from Heathkit SB-610 manual by KB7RGG)