Probably RF parts tubes. The RF parts 3-500ZG tubes in my L-4B have 5
disc. Seems like the Amperex ones have 4 disc. All of the Eimac plates
I've seen were vertical and corrugated shaped. Eimac made some great
3-500Z's. Wish they still did... But, I think the tube vs solid state
amps has been covered before.
73
Stan
KM4HQE
On 12/9/18 11:59 AM, Jim wrote:
Then they are not Eimac.
Thanks
73
Jim W7RY
On 12/9/2018 10:42 AM, Paul Baldock wrote:
At 08:45 PM 12/8/2018, you wrote:
Are there serial numbers on the grid mounting disk/cone below the
plate?
No
- Paul
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