A good source of HV wire is silicone test lead wire, available from
MCMelectronics.com. It's about 1/8 in diameter, comes in red and
black, is extremely flexible, and is rated at 10kV.
73,
Jim w8zr
Sent from my iPhone
> On Jan 23, 2016, at 7:57 AM, Carl <km1h@jeremy.qozzy.com> wrote:
>
> Dont even bother trying to find suitable new production axial lead caps, they
> dont exist any longer.
>
> For several years now Im using 100uF 450V Snap-In caps that perfectly fit the
> old clips which will be either 30 or 35 mm diameter; Im not home to look at
> my notes or measure. Ive been using the CDE 381 LX series for decades on
> customers and mine but the latest 381LR series has higher ripple current
> specs and is cheaper as almost all cap R&D is on that style these days and
> zero on axial which is steadily going away.
>
> Replace the equalizing resistors with 100K 3W MOX from Mouser, etc. Less heat
> in that seriously air blocked compartment.
>
> Be careful with the board rewiring and dont get the polarities mixed up.You
> will also likely break that fragile HV lead going up to the top plus
> insulation is often cracked. I use 20 gauge stranded Teflon but any HV wire
> is OK 22 gauge or bigger.
>
> Carl
> KM1H
>
>
> ----- Original Message ----- From: "Larry P. Greenberg" <wa9mag@ameritech.net>
> To: <amps@contesting.com>
> Sent: Thursday, January 21, 2016 12:33 PM
> Subject: [Amps] NCL-2000
>
>
>> I am going to replace the power supply electrolytics in a National NCL-2000
>> soon. The amplifier is in cherry condition and I would like to recap it as
>> close to original as possible. Are there direct replacement capacitors
>> available or will I have to get capacitors that are a different physical
>> size? Is there any other updates or changes that I should make?
>>
>> Larry, WA9MAG
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>>
>>
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