[Elecraft] Why ESSB and AM?

[Bill Frantz]

When Don wrote the paragraph quoted below, I started to think 
why I would want to use one of these modes. AM doesn't seem very 
likely except as a demo.

But ESSB might be useful to transmit a wide-band, high bit rate 
digital mode via a computer sound card. Those sound cards have 
at least 15KHz bandwidth, which would need to be reflected in 
the transmitter (and receiver) bandwidths. That amount of 
spectrum would be reasonable in bands where FM is commonly used.

I find the regulations for 160M-10M confusing as to the maximum 
bit rate* and bandwidth permitted, but on 6 meters, the 
authorized bandwidth is up to 20 kHz with a maximum baud rate of 
19.2K baud/second.

Cheers - Bill, AE6JV

* The regulations speak in terms of maximum baud rate, but you 
can send more than one bit/baud, if you have enough bandwidth.

On 9/22/12 at 18:19, w3fpr at embarqmail.com (Don Wilhelm) wrote:

>I too would like to see the FM filter also usable for AM and 
>ESSB. I really never anticipate transmitting in AM or ESSB, 
>there is always the possibility I would like to use it for some 
>demo sessions showing off the K3 capabilities.  The 
>cost/benefit ratio is too high for that kind of occasional application.

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