Heathkit HD-1422

Antenna Noise Bridge

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The Heathkit HD-1422 is an antenna noise bridge. It is used to determine how well an antenna is matched to a transmitter. The instrument works by generating a tone-modulated broadband noise signal and coupling it to an impedance bridge. Using a receiver as an indicator, the impedance bridge measures the resistive and reactive components of the antenna.
Front Panel Range: Resistance: 0 - 200 ohms; Capacitance: +/- 60 pF

Frequency range

RX-range
1-30 MHz
1-100 MHz
TX-range
?
HAM bands
160m  80m  60m  40m  30m (WARC)  20m  17m (WARC)  15m  12m (WARC)  11m (CB)  10m 
Stability
?
Tuning steps
?
Filters
?

Receiver

Modulations
All mode  
Sensitivity
?
Selectivity
?
Receiver system
?
IF-frequencies
?
Image rejection
?
Audio output
?

Transmitter

Modulations
All mode  
RF-Output
?

Connections

Antenna
SO-239
Impedance
?

Electrical

Power requirements
Internal 9 V battery or external 9-11 V DC
Current drain RX
45 mA
TX
?

Physical

Dimensions (w×h×d)
130 × 57 × 127 mm (5.12 × 2.24 × 5.00 in)
Weight
?
Form factor
Base Station
Manufactured
Between 1975 and 197x in USA
MPN
HEATHKIT-HD-001422

Other features

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

Manuals, diagrams and brochures

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