SKU: 84543719798

Two (2) NOS Beehive 2pF - 10pF variable trimmer capacitors - tubular piston caps

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Description

Two (2) NOS Beehive 2pF - 10pF variable trimmer capacitors - tubular piston capsBrand: Philips Mounting Style: Chassis Mount Type: Trimmer Capacitor Capacitor Construction: Variable Tubular Capacitor Capacitance Rating: 10pF Two (2 pcs) NOS professional variable capacitors 2pf 10pf. Rare Beehive Tubular Piston Caps! Made back in 60s probably by Philips. They are marked "804 20012 10pF" and are very solidly constructed, with silver plated connections and a ceramic core. Fully meshed the capacitance is ~15pF, falling to < 2pF when

Brand: Philips

Mounting Style: Chassis Mount

Type: Trimmer Capacitor

Capacitor Construction: Variable Tubular Capacitor

Capacitance Rating: 10pF

Two (2 pcs) NOS professional variable capacitors 2pf - 10pf. Rare - Beehive - Tubular - Piston Caps!


Made back in 60s probably by Philips. They are marked "804-20012 10pF" and are very solidly constructed, with silver-plated connections and a ceramic core. Fully meshed the capacitance is ~15pF, falling to < 2pF when open. 

Rarely seen these days, these are no longer made, but at one time were used extensively in both domestic and commercial radio equipment. The 'beehive' nick-name derives from the concentric construction, reminiscent of old-style beehives. These would be useful for repairing vintage sets with authentic parts or for general radio construction for trimming filters and oscillators. 

They are called "beehive" variable capacitor and you can find them also as "tubular" or "piston" variable capacitors. Despite they are of low total capacitance (like all trimmers), they are small in size compared to their big brothers, they have high-Q, they can handle quite a lot of power and voltage (500V), and due to their construction, they are finely-tuned, since they all have an embedded mechanical reduction drive (their screw)! I have found these trimmers to be backlash-free as well, which means that as you tune back and forth you do not skip frequencies due to backlash. Whereas in a standard trimmer the usable rotation is half turn at maximum, these trimmers have several turns to achieve the same capacitance variation. Moreover, these trimmers allow a knob to be easily mounted onto them.

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SKU: 84543719798

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Johnny C
Alexandria, US
★★★★★ 5
Nice and sturdy
Very easy to assemble and sturdy. Exactly what we were looking for. The only complaint is that the anchors that came with it did not work properly, we used our own.
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Reviewed in the United States on November 23, 2025
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Amazon Customer
Belleville, US
★★★★★ 5
Sturdy
Was very easy to install. The shelf looks very nice on my kitchen wall.
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Reviewed in the United States on March 28, 2026
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Amazon Customer
Alexandria, US
★★★★★ 4
A pain to put on the wall
4 stars only because to actually screw it into the wall you need either an angled screw driver, which we had to go buy, or a really really short screwdriver as the one that came with it is just a tad to long. Also the mollies that come with it our cheap and would not hold up on regular dry wall, which we found out, thank goodness, before we finished hanging it. As we were hanging it the top pulled right out of the wall. We had heavy duty ones at home already and used those. The shelf was a breeze to actually put together and once we got past the trouble of hanging it, is wonderful and looks great. So, 1. buy a better screwdriver, and 2. get heavy duty mollies.
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Reviewed in the United States on September 14, 2024
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Monica R.
Los Angeles, US
★★★★★ 5
Pretty and practical
Color: Rustic Brown, Size: 31.5 Inch
I love the rustic wood and iron look. It’s sturdy, spacious, and exactly what I needed in my basement apartment. I ended up buying another one to make it one long shelving unit. I highly recommend them!
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Reviewed in the United States on August 11, 2025
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Miyari
Louisville, US
★★★★★ 5
Very handsome and functional shelf with a ton of space!
I was looking for a black wall shelf to go above our coffee bar that included a bar with hanging hooks for empty glasses and a bar towel. This shelf met those needs, and I'm very impressed with it overall. It's a bit pricey for how simplistic it is, but it doesn’t feel or look cheap. Assembly and installation with the provided hardware was easy with help of a drill. The shelves are deep and work well for storage baskets and larger items. It’s a sharp-looking piece that really improved the look of our expanded coffee bar.
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Reviewed in the United States on June 7, 2025

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