which leads are which? Do you have a schematic?

Pin C is Common (ground), Pin O is Oscillator 4-60pf, Pin A is Antenna 4-140pf.

What kind of knobs will fit on this?

My order came with flat tuning wheels with VERY small screws. Not knobs..

No matter which pins I measure, I can turn either of the two screws and the measured capacitance always stays at 3 pf. Is that correct?

The 2 screws are trimmer caps for the antenna and oscillator circuits of a superheterodyne reciever. The tuning shaft adjusts the reciever frequency from 60-140 pf

What is the pinout? there are no markings for c, o, or a like are shown in the item description.

The ones I have don't look like those, mine are close to silly putty color,, like mocha coffee.. but usually, if they have 3 connections, the greater capacitance is when you use the two outside metal tabs, the smaller capacitance is from the middle to either outside metal tab. Solder short wires on the 3 tabs and test on a proto board circuit. The values may be different from other manufacturers.

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Acxico 5Pcs 223p Duplex Radio Variable Capacitor 60pf/140pf 2.1mm Hole Shaft for Pocket Radio Accessories

Product ID: 387724666

Details

Brand
Acxico
Capacitance
60 Picofarad
Material
Aluminum
Operating voltage
100 Volts
Shape
Round

⚡60-140pF variable capacitance

🔋100V withstand voltage

🔩2.1mm precision shaft hole

MX$1083

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Description

📻 Tune into perfection with Acxico’s precision variable capacitors!

BUILT TO LAST - Robust 100VDC voltage tolerance ensures reliable performance under pressure
SMOOTH OPERATOR - Low rotational torque (5-25 mN.m) for effortless, precise adjustments
COMPACT COMPATIBLE - Standard 2.1mm shaft hole fits seamlessly into your pocket radio setup
HIGH FIDELITY SIGNAL - Exceptional insulation resistance (500MΩ) minimizes signal loss and interference
PRECISION TUNING POWERHOUSE - Dual-range 60-140pF capacitance for flawless radio frequency control

The Acxico 5Pcs 223p Duplex Radio Variable Capacitor set offers a versatile 60-140pF capacitance range with a durable 100V withstand voltage. Designed for pocket radios, these capacitors feature a precise 2.1mm shaft hole and low rotational torque for smooth tuning. High insulation resistance and low contact resistance ensure minimal signal loss, making them essential for professional-grade radio frequency adjustments.

Specifications

ASIN	B081YRTZ7M
Brand Name	Acxico
Capacitance	60 Picofarad
Capacitance Tolerance	6
Item Shape	Round
Manufacturer	Acxico
Material Type	Aluminum, Polyester, Polypropylene
Maximum Voltage	100 Volts
Model	LB050
Mounting Type	Through-Hole Mount
Number of Items	5
Operating Voltage	100 Volts
Part Number	LB050
UPC	797806001507
Unit Count	5.0 Count

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MX$1083

Duties & taxes included

In stock

Sold byAmazon MexicoDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Mexico.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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