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G6B12

CIRCUIT COMPONENTS · - Analog and digital integrated circuits (ICs); microwave ICs (MMICs); display devices; RF connectors; ferrite cores

G6B12G6B →

Which of these connector types is commonly used for low frequency or dc signal connections to a transceiver?

  1. APL-259
  2. BBNC
  3. CRCA Phono
  4. DType N
Why RCA phono jacks are the standard on the back panel of transceivers for audio in/out, keying lines, PTT, ALC, and other low frequency or DC control connections. They are cheap and easy to terminate but have no controlled impedance and poor shielding, so they are not used for RF feedline work. The three other choices are all coaxial RF connectors designed to maintain a 50 ohm impedance.
Watch out PL-259 (the UHF connector) is the common HF antenna connector and BNC is used for VHF/UHF and test gear, but both are RF connectors, not audio or control connections; Type N is good well into the microwave range.
RCA = stereo/audio style plug on the back panel: audio, keying, ALC. The other three are coax RF.
HamSandwich explanation, first draft. The question and answers are the NCVEC text.
← G6B11 All of G6B

The rest of G6B

  1. G6B01 What determines the performance of a ferrite core at different frequencies?
  2. G6B02 What is meant by the term MMIC?
  3. G6B03 Which of the following is an advantage of CMOS integrated circuits compared to TTL integrated circuits?
  4. G6B04 What is a typical upper frequency limit for low SWR operation of 50-ohm BNC connectors?
  5. G6B05 What is an advantage of using a ferrite core toroidal inductor?
  6. G6B06 What kind of device is an integrated circuit operational amplifier?
  7. G6B07 Which of the following describes a type N connector?
  8. G6B08 How is an LED biased when emitting light?
  9. G6B10 How does a ferrite bead or core reduce common-mode RF current on the shield of a coaxial cable?
  10. G6B11 What is an SMA connector?
  11. G6B12 Which of these connector types is commonly used for low frequency or dc signal connections to a transceiver?
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