[Elecraft] RE: Exact 5 MHz Channel Frequencies

[Morrow, Michael A.]

David wrote:

> The footnote [54] at the bottom of page 11 of the FCC document
> 03-105 explains this and gives the example that when operating
> on 5332kHz the carrier frequency should be 5330.5kHz.

I noticed that footnote.  It implies using a 3 kHz-wide channel
to support a 2K8J3E 2.8 kHz bandwidth transmission.  That would
dictate a carrier frequency 1.5 kHz below a USB signal on 5332
kHz, rather than the more obvious 1.4 kHz that one would have
supposed appropriate for 2K8 bandwidth.

It's splitting hairs to raise a 100 Hz distinction.  Personally,
I hope the 1.5 kHz value is accepted as standard for ham use of
these channels.  There's something aesthetically more pleasing=20
about a dial reading of 5330.5 rather than 5330.6 kHz. :-)

All this channel offset business should be old hat to hams that
have been participants in US M.A.R.S, C.A.P., C.G. Auxiliary,
and S.H.A.R.E.S. HF operations.  They've applied a 1.5 kHz offset
to their nominal channel frequencies for decades.

73,
Mike / KK5F