[AMPS] IMD Question

[G3SEK@ifwtech.demon.co.uk (Ian White, G3SEK)]

Steve Harrison wrote:
>G3SEK and others have shown that even when the modulation
>waveform is a two-tone test signal, that peaks of the two signals combining
>simultaneously can cause unexpected-high IMD levels due to peak tube
>element currents which cause momentary voltage sag of power supplies with
>high source impedance. The end result will be a propensity toward
>generating buckshot on voice peaks even though on average, the IMD level
>may well be acceptable.

Credit GW4FRX for that good work.

73 from Ian G3SEK          Editor, 'The VHF/UHF DX Book'
                          'In Practice' columnist for RadCom (RSGB)
                           http://www.ifwtech.demon.co.uk/g3sek

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