[Elecraft] help wiring a mic?

[Fred Jensen]

It depends on the emission type.  From 47CFR97.307:

"(a) No amateur station transmission shall occupy more bandwidth than 
necessary for the information rate and emission type being transmitted, 
in accordance with good amateur practice."

At 97.307, there follow numerous specific limits on spurious emissions, 
limits on various forms of angle modulation, and an [in]famous symbol 
rate limit of 300 on data emissions.  Thus:

If you're transmitting voice using AM, an occupied bandwidth of between 
5 and 6 KHz would be compliant [nominal 0-2.5 KHz audio BW].  For SSB, 
it would be roughly 2.5-3.0 KHz.  If you're transmitting CW, the 
occupied bandwidth would need to be something around 0.1 KHz.  A data 
transmission could occupy any BW so long as its symbol rate remains at 
or below 300.

The rules are a little ambiguous as a result of the phrase, "for the 
information rate and emission type being transmitted".  If ESSB is 
considered to be an independent emission type, then it is compliant ... 
it fills the BW it was intended to.  If it is considered to be a form of 
standard, communications-quality SSB, then it may not totally compliant.

73,

Fred ["Skip"] K6DGW
Sparks NV DM09dn
Washoe County

On 7/6/2018 9:16 AM, hawley, charles j jr wrote:
> What is the "legal" bandwidth allowed on amateur radio?
>
> Chuck
> KE9UW
>