[Top] [All Lists]

Re: [Amps] 2 Section Tune Cap Wanted

To: "Jim Garland" <>
Subject: Re: [Amps] 2 Section Tune Cap Wanted
From: "Jim W7RY" <>
Reply-to: Jim W7RY <>
Date: Mon, 23 Jun 2014 20:32:46 -0700
List-post: <">>
Thanks Jim!

I emailed them and they answered right back!

They are $129.00 each in lots of 1 for the "75". 4 week delivery.
That will fit the bill exactly!

I've had several ARD230 amps, but only the ones with 2 tubes.

Thanks for the tip!
Jim W7RY

-----Original Message----- From: Jim Garland
Sent: Saturday, June 21, 2014 12:23 PM
To: 'Jim W7RY'
Subject: RE: [Amps] 2 Section Tune Cap Wanted

Hi Jim,
Here's info on an OEP dual section capacitor that is fairly close to your
requirements: p/n 73-2-75-56BE, 2-sections, 17-65 pF and 25-318 pF, with
.075" spacing, nominal rating of 2500V. This is the cap that was used in the
ARD 230CA amplifier, which ran three 3CX800A7 tubes and covered 160m-10m.
You can easily swap plates between the two sections to obtain different
capacitance ranges, so long as the total number of plates remains fixed at
56. The cap measures 2.5in x 2.5 in x 7.25 in, not counting the shaft.  the
"75" in the part number refers to the .075" plate spacing, and if you change
that to, .e.g., 80, it would widen the spacing to .080"  (and of course
change the dimensions). Other spacings are available in the same series.
Jim W8ZR

-----Original Message-----
From: Amps [] On Behalf Of Jim W7RY
Sent: Saturday, June 21, 2014 11:33 AM
Subject: [Amps] 2 Section Tune Cap Wanted

Now that I have found some 3CX800s and sockets (thanks to the list)!

I'm looking for a 2 section air variable tuning capacitor like in the
Alpha amplifiers.

1 section around 50 pF and the other section 250 to 275pF. I'd even take a
2 capacitors as
long as I can hook them end to end (larger cap in the front) as seen here:
Only problem with this is the assembly gets a bit long... So the dual
section would be best.

I quickly looked on the Oren Elliott page but I don't see any pictures or
values. If someone
has a part number, I could get one from them.

Thanks and 73!
Jim W7RY
Amps mailing list

Amps mailing list

<Prev in Thread] Current Thread [Next in Thread>