Hi Don and Alan,
I was thinking one of the slow multi tone FSK modes that are a single
tone at a time. WSQ is in the same class.
http://www.qsl.net/zl1bpu/SOFT/WSQ.htm
CW would be another mode that would not need a linear amp I think.
On the other hand PSK31 would require a linear amp.
73, tom w7sua
On 7/26/2015 5:43 PM, Alan wrote:
On 07/26/2015 05:32 PM, Don Wilhelm wrote:
Soundcard sourced digital modes are really SSB signals and need a linear
amplifier.
The one exception might be FSK. It is constant-amplitude so a class C
amplifier should be fine.
FSK modes include RTTY and I believe WSPR and WSJT.
Alan N1AL
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