General Radio 1450-TB Decade Attenuator
$20
The General Radio 1450-TB decade attenuator was a precision, adjustable device used in 600-ohm audio/telephony circuits (balanced H or unbalanced T) for accurately controlling signal levels, primarily for testing and calibration, like measuring gain/loss in amplifiers, transformers, or filters, and ensuring precise power level measurements in various equipment. It allowed users to insert precise amounts of signal loss, in small 0.1 dB steps, up to 111 dB, to fine-tune experiments or verify performance.
Key Uses:
- Precise Power Level Measurements: To accurately determine signal strength at different points in a circuit.
- Transmission Efficiency Tests: Evaluating how much signal is lost or gained when passing through devices.
- Gain/Loss Measurements: Testing components like amplifiers, transformers, and filters.
- Calibration: Setting accurate reference levels for other instruments.
- Signal Level Adjustment: Reducing high-level signals to test sensitive receivers or other equipment.
How it Worked (Simplified):
- It used internal resistive pads (T-type or H-type).
- Cam-operated switches inserted these pads in series to create precise, cumulative attenuation.
- The ‘-TB’ model offered three decades of attenuation, allowing for 0.1 dB steps up to 111 dB total.
Essentially, it was a high-quality, manual volume control for test benches, enabling engineers to manipulate signal strength with extreme accuracy.
This item is untested.
Contact
Verify Seller Callsign
- View VA7AV on QRZ.com
- Search ISED Database — manually enter VA7AV
- Payment Types Accepted: eTransfer, Cash
- Shipping and Pickup: Will ship at cost., Pickup offered.
- Shipping and Payment Comments: Buyer pays shipping.
- Callsign: VA7AV
- Item Condition: Used
- Used Condition: Good
