NZART Amateur Examination &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp page 5&nbsp &nbsp &nbsp &nbsp &nbsp NZARTX07 Security code 249733
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<li>  In the block diagram shown, the "linear amplifier" is: 
<img src = "hfsta.gif" align = center width = 600 height = 
170> 
<totallines = 16 >

<ol type = a>

<li> an amplifier to remove distortion in signals from the 
transceiver 

<li> an optional amplifier to be switched in when higher power 
is required 

<li> an amplifier with all components arranged in-line 

<li> a push-pull amplifier to cancel second harmonic distortion 


</ol>
<br>

<li>  In the block diagram of the receiver shown, the "filter" 
rejects: 
<img src = "ssbrx.gif" align = center width = 600 height = 
161> 
<totallines = 15>

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<li> AM and RTTY signals 

<li> unwanted mixer outputs 

<li> noise bursts 

<li> broadcast band signals 


</ol>
<br>

<li>  In the block diagram of the receiver shown, the 
waveform produced by 
the 
"oscillator" would ideally be a: 
<img src = "fmrx.gif" align = center width = 600 height = 151> 
<totallines = 16>

<ol type = a>

<li> square wave 

<li> pulsed wave 

<li> sinewave 

<li> hybrid frequency wave 


</ol>
</ol>
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