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Normally a 110pF c is used, it will help to keep the swr down, using 2 220 pF in series is also 110 pF but higher voltage can be put over these 2 C's and more power used.
In all schematics and home brew the 110 pF c was needed, and helped to bring theswr down.
Use high voltage C 500 volts or higher or 2 x 220 pF in series.
https://www.hyendcompany.nl/
Tip:
use a small piece of wire as counterpoise, a 10 feet length will do in most cases.

[QUOTE="Justme, post: 742548, member: 6187"] Normally a 110pF c is used, it will help to keep the swr down, using 2 220 pF in series is also 110 pF but higher voltage can be put over these 2 C's and more power used. In all schematics and home brew the 110 pF c was needed, and helped to bring theswr down. Use high voltage C 500 volts or higher or 2 x 220 pF in series. [URL]https://www.hyendcompany.nl/[/URL] Tip: use a small piece of wire as counterpoise, a 10 feet length will do in most cases. [/QUOTE]

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