Re: Oren Elliot latest "0219" series variable cap?

Les Rayburn

Looking on the Mike’s Electronics Parts web site, I see three different air variable capacitors. 

Is the desired part the 384 variable capacitor here: 

Or the one with the 8:1 drive here: 

I’d like to substitute the one on my shiny new 5” FSL and see if I can detect any difference in performance. Glad that this secret leaked out—now about those lottery numbers….


Les Rayburn, N1LF
121 Mayfair Park
Maylene, AL 35114

NRC & IRCA Courtesy Program Committee Chairman

Perseus SDR, Elad FDM-S2 SDR, AirSpy + Discovery, SDRPlay RSP-2 Pro, Sony XDR-F1HD [XDR Guy Modified], Dennon TU-1500RD, Sangean HDT-1X, Ray Dees RDS Decoders, Korner 9.2 Antenna, FM-6 Antenna, Kitz Technologies KT-501 Pre-amps, Quantum Phaser, Wellbrook ALA1530 Loop, Wellbrook Flag, Clifton Labs Active Whip. 

“Nothing but blues and Elvis, and somebody else’s favorite song…” 

On Jul 6, 2020, at 6:29 PM, daiche via <daiche@...> wrote:

Gary and Steve,

I had noticed a difference in older vs newer Oren caps also, although I saw no physical difference between them. I tried something on the 'older' ones that seems to work to freshen them up. I have used DeOxit D5 and/or 91-99% alcohol on them to clean the blades, keeping away from the bearings and gearing. That seems to perk them up also. So maybe it is plain old corrosion from bad city air, causing a problem, rather than a new manufacturing technique. I have always used canned air to dry them off after a treatment, as a finishing touch. You might try one or both treatments on one of your old caps to see if that helps. I'd be interested to hear if my improvement method is real or imaginary. Ha!


Dave Aichelman     N7NZH     Grants Pass, Oregon

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