Transceivers, power supplies, and basic station setup and grounding concepts for amateur radio operators.
34 cards · basic cards · AI-written, checked twice. Edit anything.
- What is a transceiver?
- A radio device that both transmits and receives signals, combining a transmitter and receiver in one unit.
- Define simplex communication.
- Radio communication where one station transmits and another receives, taking turns, using the same frequency.
- Define duplex communication.
- Two-way simultaneous communication between two stations using different frequencies, one to transmit and one to receive.
- What does RF output power measure?
- The amount of radio frequency energy, measured in watts, that a transceiver produces on transmission.
- What does frequency stability mean in a transceiver?
- The ability of a transceiver to maintain its transmitted and received frequency without drifting.
- What is the primary purpose of a power supply in a ham radio station?
- To convert AC line voltage into stable DC voltage at the correct amperage to power the transceiver.
- What is ripple in a DC power supply?
- A small AC voltage variation that remains in the DC output, measured in millivolts peak-to-peak.
- Why must a power supply have adequate current capacity?
- To prevent voltage sag and overheating when the transceiver draws peak current during transmission.
- What is a fused power supply?
- A power supply with a built-in fuse or circuit breaker to protect against overcurrent and equipment damage.
- What is a ground rod?
- A metal rod driven into the earth to establish a low-resistance connection to the ground for electrical safety.
- How deep should a ground rod typically be driven?
- At least 8 feet deep, or deeper in dry soil, to ensure good contact with moist earth.
- What is bonding in ham radio grounding?
- Connecting all metal parts and equipment frames together with heavy wire or straps to ensure they are at the same electrical potential.
- What gauge wire is typically used for station grounding?
- Number 6 AWG or larger copper wire, chosen for low resistance and durability.
- What is a coaxial cable and why is it used?
- A two-conductor cable with the inner conductor surrounded by a shield, used for feedlines to reduce RF loss and interference.
- What does characteristic impedance mean for a feedline?
- The ratio of voltage to current along a transmission line, typically 50 ohms for ham radio coax.