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

David's right. A microfarad (uf) is way over the top too big.

The trimmer caps seen in the pic have a max 35 pf (picofarad) capacitance if memory serves. They tend to adjust for a peak near their minimum setting in a 35 MHz circuit. The peak will show with the cap set closer to halfway for a circuit tuned to 27 or 16 or Mhz range. And all the way full capacitance may or may not be enough for a 10.695 or 7.8 MHz circuit.

But measuring those internal capacitors for several dozen type numbers of slug-tuned cans is a job I would take if someone offered to pay me enough.

73

[QUOTE="nomadradio, post: 788096, member: 22"] David's right. A microfarad (uf) is way over the top too big. The trimmer caps seen in the pic have a max 35 pf (picofarad) capacitance if memory serves. They tend to adjust for a peak near their minimum setting in a 35 MHz circuit. The peak will show with the cap set closer to halfway for a circuit tuned to 27 or 16 or Mhz range. And all the way full capacitance may or may not be enough for a 10.695 or 7.8 MHz circuit. But measuring those internal capacitors for several dozen type numbers of slug-tuned cans is a job I would take if someone offered to pay me enough. 73 [/QUOTE]

Top Bottom