Bredhurst Receiving and Transmitting Society

Mock Written assessment

Time allowed 1 hour 15 minutes. 28 questions correct will as far as we know represent a pass.

A copy of the Schedule from BR68/I will be available during the "real" examination so make sure that you have a copy when you sit the mock exam.

It is not a UK Callsign

Foundation

Intermediate

Full

Anyone.

The licensee and anyone under their control.

The licensee and any amateur under their control.

Only the licensee personally.

Q3 What is the validation document's importance ?

It sets out the schedule of frequencies that may be operated upon.

It gives the callsign that must be used by the licence holder when making CQ calls, and at the start and finish of all period of transmissions.

Because is the same as BR68I.

It explains in details about unattended operation.

Q4 When must a secondary locator be used?

When the station away from the Main Station Address

When outside UK

When mobile

When operating away from the Main Station Address and outside the regional boundary of the Main Station's address

Q5 How many days notice must be given to the local office of the Radiocommunications agency prior to unattended operation ?

None required

Three

Five

Seven

Q6 If your station is causing interference what must you do ?

Stop operating for a period of 28 days.

Seek help from the RA.

Do nothing until ordered to do so by a person authorised by the Secretary of State

Reduce power, find the source of the interference and remove then return to normal operation of the station.

Q7  When does the annual licence for amateur radio expire?

At midnight on the anniversary day.

At midnight on the day before the anniversary day.

At noon on the anniversary day

At noon on the day before the anniversary day.

Q8 Which frequency has a power level of  to be written 15dBW

1.855MHz

1.955MHz

1.800MHz

1.810MHz

Q9 Which modes are not permitted on the frequencies 51.00-52.00MHz ?

 RTTY

 RTTY and facsimile

 RTTY, Facsimile and SSTV

  RTTY, Facsimile,  SSTV and FSTV

Q10 An electric current is a movement of electrons in ?

An insulator

A vacuum

Air

Conductor

Q11 What is the combined resistance of three resistors linked in series having individual values of 1k 2.7K 4.7k

8.4k

2.2k

2.8k

7.7k

Q12 The ability of a capacitor to store a charge is dependent upon?

The applied voltage.

The applied current.

The size of the plates and their separation.

The material the capacitor is made from.

Q13 A tuned circuit consists of ?

A capacitor and resistor

A capacitor and an inductor

An inductor and resistor

A resistor and a diode

Q14 What is the purpose of the iron former in a transformer?

To insulate one set of windings from the other.

To support the windings.

To concentrate the electric field.

To concentrate the magnetic field.

Q15 What term is used to indicate a flow of electrons in a diode in one direction ?

Forward bias.

Reverse bias.

Polarity.

Reverse polarity.

Q16 A small current to which connection of a transistor control a larger flow of current through the device?

Any.

Base.

Collector.

Emitter.

Q17 When using a multi-meter what precautions must be made before conducting measurements?

Set the meter to resistance range.

Set the meter to the highest range and work down.

Set the meter to the lowest range and work up.

Set the meter to a mid range.

Q18 What is the function of the microphone amplifier in a transmitter ?

To remove a side band when operating SSB.

To reduce the audio level sent to the next stage

To remove and DC on the voice signal.

The increase the audio level to the next stage.

Q19 When Audio Frequencies and Radio Frequencies are mixed the process is called ?

Modulation.

Demodulation.

Attenuation.

Deviation.

Q20 What is the numeric value of the 4th harmonic of 1250 Hz

2500 Hz

5000 Hz

625 Hz

4000 Hz

Q21 A device that blocks some frequencies but allows others to pass is called ?

An amplifier.

A detector.

A modulator.

A filter.

Q22 The local oscillator produces a clean signal to pass to ?

The RF amplifier.

The AF amplifier.

The antenna.

The mixer.

Q23 If the RF Frequency is 7.1MHz and the Local Oscillator is 6.6Mhz what is the value of the IF ?

13.7MHz

500MHz

500kHz

500Hz

Q24 What is the purpose of the AGC on a receiver ?

To improve selectivity.

To reduce hum on audio signals.

To keep the output at a relatively constant level.

To block DC on audio input leads.

Q25 What fields does the RF current flow in a twin feeder cause ?

The flow causes equal fields in each conductor.

The flow causes equal but opposite fields in each of the conductors.

The flow is in one conductor and the other is tied to earth.

The flow is alternate first in one conductor and then the other.

Q26 Changing the size of a dipole antenna away from it design of a 1/2 wavelength causes ?

Change in the feed impedance.

Change in the power it can radiate.

Change in the height it must be used above ground.

Change in polarization.

Q27 If an antenna has a gain of 9dB and is fed with 10 watts what is it ERP?

10 watts

90 watts

80 watts

9 watts

Q28  Given that the speed of light is 300,000,000 m/s what is the wavelength of 20MHz

15m

1.5m

150m

6m

Q29 Which layer of the ionosphere is the main layer used for HF propagation ?

E

F

G

H

Q30 Why are VHF and UHF frequencies good for use with satellite communication ?

Because they are bounced back off the ionosphere.

Because they travel at the speed of light.

Because they are enhanced the upper atmosphere.

Because they normally pass easily thought the ionosphere.

Q31 Which directives affect UK equipment as far as EMC is concerned ?

British

World wide

European

American

Q32 What constitutes a good RF earth ?

Good bonding to water and gas pipes.

Good bonding to the electrical mains earth.

A counterpoise from your ATU

An earth stake driven into the ground and radials linked to the stake.

Q33 If a piece of equipment is affected by direct pickup what is the most likely causes ?

Any frequency of transmission.

HF transmission.

UHF transmission

VHF transmission

Q34 Why can a mast-head signal preamps for a domestic TV be a problem item for an amateur radio licence holder ?

Because they get in the way of fixing antennas to a TV mast.

They selectively amplify amateur radio signals more than TV signals and overload the TV input.

They are broadband and amplify all signals and overload the TV input.

They take DC near to the amateur radio signals causing distortion to the amateur signals.

Q35 Whilst the station log is a licence requirement it will also be useful in EMC problems, how ?

It will show the greatest distance you have worked.

It will give the callsigns of other stations you have worked.

It will give the times and dates you operated.

It will give the power you used.

Q36 What is the meaning of the "Q" code QRL?

Has it been raining long?

Is this frequency in use?

Is this signal using long path?

Can you hear my signal?

Q37 In operating terms CW has ?

The narrowest bandwidth.

The greatest bandwidth.

The narrowest FM signal.

The narrowest AM signal.

Q38 Where can details of an amateur who's callsign is known sometimes be found ?

On the internet and in callsign books.

On the local voting register.

In the local telephone directory.

At telephone directory enquiries

Q39 What important feature of a satellite operating station cannot be omitted ?

A receiver to hear the downlink.

A power meter.

An SWR meter.

A dummy load.

Q40 Asthma and other breathing problems can be a result of?

The heat from the soldering iron tip

Taking too long to make a joint

Using too much solder.

Having too little ventilation at the soldering desk

Q41 A centre punch is used to ?

Make holes in paper ready to put in a ring binder.

Cut small holes in light weight aluminium boxes.

Cut larger holes in light weight aluminium boxes.

Make a small indentation prior to drilling.

Q42 How far from the supporting wall should the base of a ladder rest when the top is 4m up the wall ?

1m

1.1m

1.2m

1.3m

Q43  If a piece of eqipment is rated at 1500 watts what should be the fuse rating in the plug?

1 amp

5 amp

13 amp

It does not matter.

Q44  Why should solder joints be made quickly ?

The reduce risk of component damage.

To reduce the likelihood of dry joints.

To reduce the amount of solder used.

To reduce the amount of time taken to make up a completed PCB.

Q45   What is the value of a resistor with the colour code of red red orange

22k

2200 ohms

220 ohms

33k