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The preamp relay's "off" side carries both your barefoot transmit power and the receiver's connection to the antenna. That side of the relay is prone to dropouts. The gap that develops between the contact points is incredibly thin, and keying the mike will cause a tiny arc across the gap. This restores the broken circuit across the contact points.

For a while.

Only.

The area below and behind the Load control is where the relays will be. Either three identical clear-plastic enclosed relays in a row, mounted on a vertical plug-in circuit board. -OR- two smaller white-plastic relays about an inch square, with a third clear-plastic enclosed plug-in relay. All of them on a circuit board bolted to the horizontal chassis deck.

And there are more than "two" 300A amplifiers. But only two arrangements of the relays on the top side.

73

<blockquote data-quote="nomadradio" data-source="post: 594584" data-attributes="member: 22">The preamp relay&#039;s &quot;off&quot; side carries both your barefoot transmit power and the receiver&#039;s connection to the antenna. That side of the relay is prone to dropouts. The gap that develops between the contact points is incredibly thin, and keying the mike will cause a tiny arc across the gap. This restores the broken circuit across the contact points. For a while. Only.The area below and behind the Load control is where the relays will be. Either three identical clear-plastic enclosed relays in a row, mounted on a vertical plug-in circuit board. -OR- two smaller white-plastic relays about an inch square, with a third clear-plastic enclosed plug-in relay. All of them on a circuit board bolted to the horizontal chassis deck. And there are more than &quot;two&quot; 300A amplifiers. But only two arrangements of the relays on the top side. 73</blockquote>

[QUOTE="nomadradio, post: 594584, member: 22"] The preamp relay's "off" side carries both your barefoot transmit power and the receiver's connection to the antenna. That side of the relay is prone to dropouts. The gap that develops between the contact points is incredibly thin, and keying the mike will cause a tiny arc across the gap. This restores the broken circuit across the contact points. For a while. Only. The area below and behind the Load control is where the relays will be. Either three identical clear-plastic enclosed relays in a row, mounted on a vertical plug-in circuit board. -OR- two smaller white-plastic relays about an inch square, with a third clear-plastic enclosed plug-in relay. All of them on a circuit board bolted to the horizontal chassis deck. And there are more than "two" 300A amplifiers. But only two arrangements of the relays on the top side. 73 [/QUOTE]

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