SCARS LIVE QUESTIONS

Come and join the fun.  Send us your pictures, riddles, or questions and have them added to our weekly trivia sessions. If interested please send your email including your submission to VOIP@SCARSVOIP.COM

LIVE QUESTIONS FOR JULY  5 AND JULY 6, 2025 SUPPLIED BY K2HA

1, In the old days hams would connect two small incandescent bulbs to their open-wire feeders. Why?

A: To prevent static buildup as the wind blew in dry air

B: The lighting effect was considered interesting and was a badge of skill that was visible to others

C: The bulbs helped lower incoming static crashes

D: To get an idea of RF balance in a balanced line feeder

2, An electromagnetic device used to couple lines of differing impedance is called a:

A: Zener diode

B: balun transformer

C: full wave rectifier

D: half wave rectifier

3, The purpose of a low pass filter in the microphone amplifier of an SDR transmitter prior to the analogue to digital converter (ADC) is to:

A: avoid higher frequency signals causing aliases in the digital representation.

B: prevent excessive bandwidth of the transmitted radio frequency signal.

C: minimize the generation of phase noise in the audio modulator.

D: optimize the average to peak power ratio to give maximum power without over-modulation.

4, The most significant safety risk of using a quarter wave vertical antenna at high power without a counterpoise is:

A: excessive noise on receive - resulting in an inability to receive weaker signals.

B: RF currents in the household wiring and power leads.

C: difficulty in getting a low SWR on the feeder to the antenna.

D: frequency instability due to RF getting into other sections of the transmitter circuitry.

THE ANSWERS TO THE ABOVE QUESTIONS ARE

1D, 2B, 3A AND 4B

LIVE QUESTIONS FOR JULY 12 AND JULY 13, 2025 SUPPLIED BY K2HA

1, 10 watts amplified by 20dB equals:

A: 20 Watts

B: 200 Watts

C: 1000 Watts

D: 2000 Watts

2, If your recording space isn't perfectly soundproofed or you need to record in various locations, a dynamic microphone is usually the better choice for voice communications.

In a controlled studio environment where you want to capture the finest details of your voice, a condenser microphone is an excellent option. (Written by KY6V)

A: True

B: False

3, Which AI assistant came out before the others?

A: Alexa

B: Cortana

C: Google Assistant

D: Siri

4, Three identical inductors are connected in parallel resulting in an effective inductance 30mH. What will the inductance be if they are connected in series?

A: 270mH

B: 90mH

C: 30mH

D: 10mH

THE ANSWERS TO THE ABOVE QUESTIONS WILL BE POSTED HERE SHORTLY AFTER THE CONCLUSION OF THE SUNDAY RAGCHEW NET