SB-630 Station Console ---------------------- The Heathkit SB-630 is a multi purpose instrument that includes an SWR meter, a hybrid phone patch, a ten-minute timer, and an accurate digital clock. The Console was designed for use with an amateur radio station or with other types of transmitters or transceivers. The SWR section indicates the power transfer efficiency between a transmitter and antenna. If it is used with a transceiver, it will not affect receiver operation. The combination of very low insertion loss and high power rating permits the SWR meter to remain permanently inserted in a 50-52 ohm or 70-75 ohm transmission line. This permits constant monitoring of reflected power or SWR to determine proper transmitter tuning, transmission line-to- antenna impedance matching and relative power output. The SWR meter section can also be used for other applications such as testing the design of antenna coupling networks, checking other transmission systems, etc. The input and output connectors are standard SO-239 coax connectors. The hybrid phone patch section of the Console is used to transfer audio signals between telephone lines and two-way radio equipment. It can be used either manually or with voice-control-operated (VOX) transmitters without changing any connections. When the phone patch is used, the meter will indicate the VU level so you can monitor the phone patch output. This assures you that you are supplying the proper volume level to the telephone line so crosstalk is prevented. The meter also permits you to make a convenient null adjustment check (maximum null depth produces maximum isolation between the telephone line and station equipment, resulting in the best operating conditions for voice-control circuits. Proper match to the phone line, with minimum hum, is provided by a specially designed hybrid transformer. The ten-minute timer reminds you to give your call letters and identify your station at ten minute intervals, to comply with FCC regulations. Either a visual reminder, or both visual and aural reminders, can be selected by a switch on the front panel. The timer can be reset at any time to start a new ten minute interval. The clock has a digital readout showing the hour, minute, and second. The clock is independent of all other circuits in the Console, and runs whenever the power cord is connected to the AC line. The SWR meter and the hybrid phone patch require no AC power for operation. They can be used with the timer switch turned off or with the line cord disconnected. AC power is required for the ten-minute timer and the clock. The cabinet and front panel styling matches that of the Heath SB Series. SPECIFICATIONS -------------- CLOCK ----- Dial. . . . . . . . . . . . . . . . . . 4-drum 24 hour digital readout Motor . . . . . . . . . . . . . . . . . 1 rpm at "seconds" drum, gear driven Power requirements. . . . . . . . . . . 120 VAC, 60 Hz, 3.7 watts TIMER ----- Time interval . . . . . . . . . . . . . Adjustable to 10 minutes. Time Stability. . . . . . . . . . . . . Less than .2% change per hour in normal ambient temperature. Time Cycle. . . . . . . . . . . . . . . Instant reset with front panel button Signal. . . . . . . . . . . . . . . . . Visual or both visual & aural; switch selected from front panel with Off position. Circuit . . . . . . . . . . . . . . . . Resistance-capacitance network, Neon discharge, vacuum tube relay control. Tube Complement . . . . . . . . . . . . 6EW6 Relay control OA2 Voltage regulator Power Supply. . . . . . . . . . . . . . Transformer operated, voltage regulated, fused. Power Requirements. . . . . . . . . . . 120 VAC, 60 Hz, 15 watts. SWR METER --------- Operation . . . . . . . . . . . . . . . Indicates percentage of forward and reflected power, and voltage standing wave ratio (SWR). RF Power Handling Capacity. . . . . . . 2 kw P.E.P. Input and Output Impedance. . . . . . . 50-52 ohms or 70-75 ohms. Band Coverage . . . . . . . . . . . . . 160 through 6 meters. PHONE PATCH ----------- Circuit . . . . . . . . . . . . . . . . Telephone hybrid circuit. Allows voice control or manual operation. Single switch places unit in full operation. Phone Line Input Impedance. . . . . . . Approx. 600 ohms. Null Depth. . . . . . . . . . . . . . . At least 30 db isolation between transmit and receive circuits. Receiver Impedance. . . . . . . . . . . Effective match from 3 to 16 ohms. Transmitter Impedance . . . . . . . . . 600 ohms or high impedance output. Meter . . . . . . . . . . . . . . . . . 100 microamp movement. VU readings for phone patch monitoring and null depth indication. Relative power and standing wave readings for SWR meter. Front Panel Controls. . . . . . . . . . Mode: SWR Meter. Phone Patch. Timer: Off, Visual, Audio. Reset: Pushbutton SWR Meter: Forward, Reverse SWR Meter: Sensitivity Phone Patch: Transmitter gain Phone Patch: Receiver gain Rear Panel Controls . . . . . . . . . . Timer adjust Null adjust Null - Monitor switch Cabinet Dimensions. . . . . . . . . . . 6-5/8" high x 10" wide x 11-1/8" deep. Net Weight. . . . . . . . . . . . . . . 7.5 lbs. Sample Connections: ------------------- ------------------------------------------------ | | | (o) RF Output RF Input (o) | | | ---------------------------------------------------------- | | | o Phone o o (to SB-401 spkr jack)| | | | o Lines o o (to speaker) | | ^ | -------------------------|-------------------------------- |_ to SB-401 phone patch jack (Data taken from Heathkit SB-630 manual by KB7RGG)