<ul>
<li><p>The controls covered are</p>
<ul>
<li>AF / RF gain
<ul>
<li>(1A) AF, Audio frequency gain control (Volume)<br />
Turns the volume up and down</li>
<li>(1B) RF, Radiofrequency gain control (From the Kenwood manual)<br />
RF GAIN is controlled by changing the AGC (Auto Gain Control) threshold voltage. Adjusting the RF GAIN so that the S-meter reading increases to a point just lower than speech peaks. This also reduces noise during reception. For normal operation, this control should be turned fully clockwise for maximum sensitivity.</li>
</ul></li>
<li>CW VBT (From the Kenwood manual)
<ul>
<li>Carrier Wave Variable Bandwidth Tuning Control<br />
This control is very similar to the SSB Slope tuning controls. However, with the CW VBT control, both sides of the IF passband are narrowed at the same time.</li>
</ul></li>
<li>SSB Slope Tune (High pass low pass audio filter)
<ul>
<li>High pass filter<br />
<a href="https://en.wikipedia.org/wiki/High-pass_filter" class="uri">https://en.wikipedia.org/wiki/High-pass_filter</a></li>
<li>Low-pass filter<br />
<a href="https://en.wikipedia.org/wiki/Low-pass_filter" class="uri">https://en.wikipedia.org/wiki/Low-pass_filter</a></li>
</ul></li>
</ul></li>
<li><p>I mention that the radio uses phase locked loop technologies.<br />
Below is an article in Wikipedia about PLL (Phase locked loop)<br />
<a href="https://en.wikipedia.org/wiki/Phase-locked_loop" class="uri">https://en.wikipedia.org/wiki/Phase-locked_loop</a></p></li>
<li><p>I mention that the radio doesn’t use valves.<br />
Below is an article in Wikipedia about valves (Vacuum tubes)<br />
<a href="https://en.wikipedia.org/wiki/Vacuum_tube" class="uri">https://en.wikipedia.org/wiki/Vacuum_tube</a></p></li>
<li><p>Dry joint<br />
I mention that the radio developed a dry joint<br />
Below is an article in Wikipedia about soldering that covers dry joints<br />
<a href="https://en.wikipedia.org/wiki/Soldering#Dry_joint" class="uri">https://en.wikipedia.org/wiki/Soldering#Dry_joint</a></p></li>
</ul>
