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Heathkit GD-1B Grid Dip Meter in Excellent Condition with the Coil Set

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MPN:
GD-1B
Condition:
Used
Shipping:
$12.00 (Fixed Shipping Cost)
  • Heathkit GD-1B Grid Dip Meter with original factory coil set (five plug-in coils covering 2-250 MHz) in the original factory box. Classic vacuum tube Colpitts oscillator test instrument – ideal for resonant frequency checks, antenna tuning, neutralizing, IF alignment, parasitic detection, and more. Compact one-hand operation design. 117V AC powered. Rare complete set in good original condition. Great addition to any vintage ham radio or electronics workbench. Ships carefully packed
  • Heathkit GD-1B Grid Dip Meter with original factory coil set (five plug-in coils covering 2-250 MHz) in the original factory box. Classic vacuum tube Colpitts oscillator test instrument – ideal for resonant frequency checks, antenna tuning, neutralizing, IF alignment, parasitic detection, and more. Compact one-hand operation design. 117V AC powered. Rare complete set in good original condition. Great addition to any vintage ham radio or electronics workbench. Ships carefully packed
  • Heathkit GD-1B Grid Dip Meter with original factory coil set (five plug-in coils covering 2-250 MHz) in the original factory box. Classic vacuum tube Colpitts oscillator test instrument – ideal for resonant frequency checks, antenna tuning, neutralizing, IF alignment, parasitic detection, and more. Compact one-hand operation design. 117V AC powered. Rare complete set in good original condition. Great addition to any vintage ham radio or electronics workbench. Ships carefully packed
  • Heathkit GD-1B Grid Dip Meter with original factory coil set (five plug-in coils covering 2-250 MHz) in the original factory box. Classic vacuum tube Colpitts oscillator test instrument – ideal for resonant frequency checks, antenna tuning, neutralizing, IF alignment, parasitic detection, and more. Compact one-hand operation design. 117V AC powered. Rare complete set in good original condition. Great addition to any vintage ham radio or electronics workbench. Ships carefully packed
$39.99
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Description

Heathkit GD-1B Grid Dip Meter in Excellent Condition with the Coil Set

 This GD-1B  and coil set is in excellent shape and appears to be working.

 A copy of the manual is included.

Heathkit GD-1B Grid Dip Meter (also called Grid-Dip Oscillator or GDO).
 
This is a classic vintage vacuum-tube test instrument from the 1950s, popular with amateur radio operators, experimenters, and service technicians. It functions primarily as a grid dip meter for finding resonant frequencies of tuned circuits (coils, antennas, traps, filters, etc.), but also serves as an absorption wavemeter, signal generator/marker, and (with headphones) oscillator-detector for zero-beat measurements.
 
 
Key Specifications
  • Frequency Range: 2–250 MHz continuous using the five supplied plug-in coils. Optional low-frequency coil set extends coverage down to ~350 kHz (up to ~2 MHz).
     
  • Circuit: Colpitts oscillator using a 6AF4 or 6T4 high-frequency triode.
  • Meter: 500 µA movement with variable sensitivity control.
  • Power: Transformer-operated, 117 V AC 50/60 Hz, ~5 W (selenium rectifier).
  • Physical: Compact handheld design (~7" long × 2.5" wide × 3.25" deep) for one-handed operation. Plug-in coils with dial scales (spares included for custom calibration). Phone jack for headphones.
     
    heathkit-museum.com
  • Uses: Neutralizing, parasitic/spurious oscillation detection, IF alignment, rough L/C measurement, relative power indication, etc.
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