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Over the years I've heard many customers state that most HF rigs are not able to reproduce good sounding AM. My response has been to abandon the low level IF modulation technique in favor of low level RF modulation. Simply put, the IF stages of HF rigs have too many filters inline that restrict bandwidth. It is not worth trying to modify the IF stages. The modification found here The AM Window: Tech: Mods: TS-940S will make your TS-940S sound like a broadcast transmitter on AM and it also improves the SSB response.

[QUOTE="Shockwave, post: 161134, member: 10882"] Over the years I've heard many customers state that most HF rigs are not able to reproduce good sounding AM. My response has been to abandon the low level IF modulation technique in favor of low level RF modulation. Simply put, the IF stages of HF rigs have too many filters inline that restrict bandwidth. It is not worth trying to modify the IF stages. The modification found here [url=http://www.amwindow.org/tech/htm/ts940s.htm]The AM Window: Tech: Mods: TS-940S[/url] will make your TS-940S sound like a broadcast transmitter on AM and it also improves the SSB response. [/QUOTE]

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