[Elecraft] Exact 5 MHz Channel Frequencies (was KRC2 first!)

Thu May 15 17:37:01 2003

Thanks, Mike - that is why I raised the question.

I suspect that hams in general will get off to a rough start with the FCC
and our new neighbors unless the word is seriously spread - ARRL should do
that, I agree.

Ed, I know you are busy but you are the only name I know at ARRL that will
see that this gets done. If it doesn't . . . you don't want to know.

73/72, George
Amateur Radio W5YR -  the Yellow Rose of Texas
Fairview, TX 30 mi NE of Dallas in Collin county EM13QE
"In the 57th year and it just keeps getting better!"
<mailto:[email protected]>

----- Original Message -----
From: "Morrow, Michael A." <[email protected]>
To: <[email protected]>
Cc: <[email protected]>
Sent: Thursday, May 15, 2003 3:07 PM
Subject: [Elecraft] Exact 5 MHz Channel Frequencies (was KRC2 first!)

George wrote:

> So far, the unanswered question is what those channel frequencies
> mean! It is commonplace in the government services to specify the
> *center frequency* of an occupied bandwidth. In the Amateur Service,
> we define our SSB frequencies in terms of the suppressed carrier
> frequency which is on one side of the passband.
>
> So, is 5348 KHz where we set the dial to use that channel or do
> we set the dial 1.4 KHz lower?

George,

From the FCC website at:

http://hraunfoss.fcc.gov/edocs_public/attachmatch/FCC-03-105A1.doc

"NTIA has reviewed its assignments and has found that 5 channels are lightly
used and could be used on a secondary basis by amateur stations...We also
concur with NTIA's basic proposals that amateur service operations on these
channels be limited to SSB-SC modulation, upper sideband voice transmissions
only, with power not to exceed equivalent of 50 W PEP transmitter output
power into an antenna with a gain of 0 dBd, or 50 W e.r.p.  Accordingly, we
are amending sections 2.106, and 97.303 of our rules to provide a secondary
allocation to the amateur service on the channels 5332 kHz, 5348 kHz, 5368
kHz, 5373 kHz and 5405 kHz as specified by NTIA, and to require that amateur
operations be limited to an effective radiated power (e.r.p.) of 50 W, and
emission type 2K8J3E, upper sideband voice transmissions only centered on
each frequency."
------------------------------------

So it seems from the last sentence above, that the actual indicated
suppressed carrier frequencies of the five channels will need to be 1.4 kHz
below the listed channel center frequencies (i.e., 5330.6, 5346.6, 5366.6,
5371.6, 5403.6 kHz).  I wonder how well that will be recognized and observed
by the amateur community.  The ARRL had better emphasize that point, as
alien as it is to most hams.

73,
Mike / KK5F

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