[Elecraft] US 60 Meter Band Changes Approved by FCC - CW Issues

[Phil Kane]

On 11/20/2011 8:45 PM, Don Wilhelm wrote:

> down by 1.4 kHz.  NOW, I can't resolve why everyone uses a downward
> shift of 1.5 kHz instead of a shift of 1.4 kHz - perhaps someone can
> explain that difference to me.  I see nothing in the FCC documents that
> provides for a 100 Hz guard band which would increase the effective
> channel width to 3.0 kHz and thus yield a suppressed carrier shift of
> 1.5 kHz from the channel center.  Mysteries, mysteries, mysteries - but
> that is the way we are told to do it, and the FCC has not complained so
> far - maybe just "let sleeping dogs lie" is the best recourse.

  Enter stage left, the U S Coast Guard whose GMDSS (Marine
  safety) SITOR (commercial version of AMTOR) transmissions say:

  NMC GMDSS SITOR FEC BROADCAST

  FREQUENCIES: 8416.5 KHZ
              16806.5 KHZ

  TIMES: 0015 AND 1735 UTC

  NOTE: CARRIER OR DIAL FREQUENCY IS LOCATED 1700 HZ BELOW THE
  ASSIGNED FREQUENCY (-1.7 KHZ).

  On my (some say ancient) ICOM R-7000 HF receiver in FSK mode,
  I set the dial 800 Hz below the assigned frequency.  On my
  TenTec RX 320D SDR HF receiver in LSB mode, I set the dial 2.19
  kHz above the assigned frequency.

  Mysteries indeed.

  My K2 doesn't tune those frequencies so I can't comment on
  that, but I do like the idea of setting the first five memory
  channels for USB/data/RTTY mode in VFO A and for CW mode in
  VFO-B.  Cheap and easy solution.

--  73 de K2ASP - Phil Kane
    Elecraft K2/100   s/n 5402