[Boatanchors] Identifying Newer Caps

[Glenn Little WB4UIV]

A quick visit with my friend Google gets me this:

http://stason.org/TULARC/pc/how_to_read_capacitor_codes.html

282M is 2800 pF 20%

5J is 5pF 5%

50J is 50 pF 5%

30J is 30 pF 5%.

Your Radio Amateurs Handbook should have the same information, at 
least the older ones did.

73
Glenn
WB4UIV

At 07:28 PM 11/25/2009, David Hollander wrote:
>I have a box of new doorknob caps with newer (cryptic to me) markings.
>
>The working voltage is clearly marked but the capacitance is not.
>
>One reads 282M
>
>Another 5J
>
>Another reads 50J
>
>Another reads 30J
>
>A bunch of them have the capacitance but not the working voltage.
>
>Need a plate coupling cap for my 4-1000 amp I built in the early 90's
>The coupling cap in their got fried years ago and is not readable as to
>value. What is the suggested value/voltage for the coupling cap? Will be
>   running around 5KV plate voltage. Want to get this back on for this
>weekend's DX contest.
>
>Tnx and 73,
>
>Dave N7RK
>
>--
>***********************************************************
>Dave  N7RK          Boatanchors Home Page: http://members.cox.net/n7rk
>Phoenix, Arizona         *DXCC Honor Roll*    *WAZ#22 - 75 Meter SSB*
>
>ex-XE2/N7RK, N7RK/ZB2, VK2ERK, ZM0AJN, WB6NRK, WN6IWX
>
>Boatanchor and Antique Radio Collector
>
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