Heathkit TX-1 'Apache' Desktop Shortwave Transmitter

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The "Apache" operates with 150 watt phone input and 180 watt CW input on 80 through 10 meters and features chassis provision for plug-in connection of the Heathkit SB-10 SSB adapter. A specially-designed VFO provides minimum drift frequency control necessary for SSB transmission. The illuminated, rotating slide-rule VFO dial with full gear drive vernier tuning provides ample bandspread for accurate frequency settings. Each amateur band is separately calibrated on the rotating slide-rule dial for maximum accuracy. Also featured in the "Apache" is adjustable low-level speech clipping and a low distortion modulator stage employing two 6CA7/EL34 tubes in push-pull class AB operation. Time sequence keying is provided for "chirpless" break-in CW operation. A "spotting" push button allows tuning of the transmitter before switching on the final amplifier and also enables the operator to "zero beat" an incoming signal without placing the transmitter on-the-air. The final amplifier is extensively shielded for maximum TVI protection and is neutralized for high stability. Pi network output coupling provides smooth loading into antenna impedances of 50 to 72 ohms.

See also the companion receiver, the Heathkit RX-1 "Mohawk"

Frequency range

RX-range
-
TX-range
10-80 m
HAM bands
80m  40m  20m  15m  10m 
Stability
-
Tuning steps
-
Filters
-

Receiver

Modulations
-
Sensitivity
-
Selectivity
-
Receiver system
-
IF-frequencies
-
Image rejection
-
Audio output
100 watts at 300-3000 cycle (Adjustable low-level speech clipping; 500 ohm output available)

Transmitter

Modulations
AM   CW   SSB  
RF-Output
AM: 150 W, SSB/CW: 180 W

Connections

Antenna
-
Impedance
50-72Ω

Electrical

Power requirements
Mains
Current drain RX
-
TX
500 W peak

Physical

Dimensions (w×h×d)
495 × 295 × 406 mm (19.49 × 11.61 × 15.98 in)
Weight
-
Form factor
Base Station
Manufactured
Between 1959 and 196x in USA
MPN

Other features

Memories
-
Usage
Amateur / Ham radio operators
Features + options
-
Accessories
-

Manuals, diagrams and brochures

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