You can now help support WorldwideDX when you shop on Amazon at no additional cost to you! Simply follow this Shop on Amazon link first and a portion of any purchase is sent to WorldwideDX to help with site costs.
The Feb 2025 Radioddity Giveaway Results are In! Click Here to see who won!

Reply to thread

Message

That's one approach. If you have that part on hand. They can be hard to track down for a radio that old.

Our go-to solution is a 30 pf trimmer capacitor. L16 has two pins on one side and three pins on the other.

The trimmer cap's two leads solder to the outer two of the three pins on that side.

The slug gets pre positioned a couple of turns below the rim of the hole, and the trimmer cap is adjusted for max receive signal. Sometimes the slug needs to be farther down inside, sometimes not. A back-and-forth between the slug and the capacitor is sometimes necessary.

This pic shows a near basket-case radio that had seven of these internal caps go bad.

The internal cap is almost always connected across the two outer pins of the 3-pin side. Soldering the trimmer to those two solder pads lets it take the place of the failed internal part.

Would be nice if someone worked out the capacitance value of the can's internal capacitor. Service data almost never includes this info.

73

<blockquote data-quote="nomadradio" data-source="post: 788025" data-attributes="member: 22">That&#039;s one approach. If you have that part on hand. They can be hard to track down for a radio that old. Our go-to solution is a 30 pf trimmer capacitor. L16 has two pins on one side and three pins on the other.The trimmer cap&#039;s two leads solder to the outer two of the three pins on that side.The slug gets pre positioned a couple of turns below the rim of the hole, and the trimmer cap is adjusted for max receive signal. Sometimes the slug needs to be farther down inside, sometimes not. A back-and-forth between the slug and the capacitor is sometimes necessary.This pic shows a near basket-case radio that had seven of these internal caps go bad.<img src="https://imagizer.imageshack.com/img922/4756/vYRv7m.jpg" alt="" class="fr-fic fr-dii fr-draggable " data-size="" style="" />The internal cap is almost always connected across the two outer pins of the 3-pin side. Soldering the trimmer to those two solder pads lets it take the place of the failed internal part.Would be nice if someone worked out the capacitance value of the can&#039;s internal capacitor. Service data almost never includes this info.73</blockquote>

[QUOTE="nomadradio, post: 788025, member: 22"] That's one approach. If you have that part on hand. They can be hard to track down for a radio that old. Our go-to solution is a 30 pf trimmer capacitor. L16 has two pins on one side and three pins on the other. The trimmer cap's two leads solder to the outer two of the three pins on that side. The slug gets pre positioned a couple of turns below the rim of the hole, and the trimmer cap is adjusted for max receive signal. Sometimes the slug needs to be farther down inside, sometimes not. A back-and-forth between the slug and the capacitor is sometimes necessary. This pic shows a near basket-case radio that had seven of these internal caps go bad. [IMG]https://imagizer.imageshack.com/img922/4756/vYRv7m.jpg[/IMG] The internal cap is almost always connected across the two outer pins of the 3-pin side. Soldering the trimmer to those two solder pads lets it take the place of the failed internal part. Would be nice if someone worked out the capacitance value of the can's internal capacitor. Service data almost never includes this info. 73 [/QUOTE]

Top Bottom