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

[Mike Harris]

Maybe I'm missing something but isn't this what the VFO knob is for. 
Set the dial frequency to 5357kHz for USB, change to CW and set the dial 
frequency to 5358.5kHz

Regards.

Mike VP8NO

On 19/11/2011 18:47, Mike Morrow wrote:
> Sandy wrote:
>
>> The CW signal must be radiated on the center frequency.  This won't make ANY
>> difference except that you will have two memory settings for the same
>> channel.  One for SSB and data  and RTTY modes, and one for CW mode which
>> will simply occupy 10 memory slots.
>
> The point to be taken is that most HAM transceivers, when the emission mode is
> changed from USB to CW, shift either the effective receive or the transmit
> frequency by the desired amount of sidetone frequency.  They don't shift both
> the effective receive AND the transmit frequency.  For example, a transceiver
> tuned to 5357.0 kHz on the dial in USB mode will produce a zero Hz AF output
> when receiving a transmitted signal of 5357.0 kHz, and a 1500 Hz AF output when
> receiving a transmitted signal of 5358.5 kHz.  When the transceiver is shifted
> to CW mode, the receiver frequency typically remains 5357.0 kHz, while the
> transmitter frequency is shifted up to typically 5357.8 kHz (for 800 Hz CW
> sidetone).  But the new FCC rules require that the CW transmit frequency be
> 5358.5 kHz, which will produce an undesirably high side tone to any USB/CW mode
> receiver set to 5357.0 kHz.  If you are in a USB phone QSO on 5357.0 kHz, anyone
> sending a CW signal on that channel must do that using 5358.5 kHz.  The phone
> boys will hear not the typically 800 Hz sidetone, but rather a high 1500 Hz
> sidetone!
>
>> If the FCC engineers want to hear a 1.5 khz tone, that's THEIR problem,
>> not ours.
>
> That's got NOTHING to do with the discussion.
>
> The new 60m rules will mandate that a CW signal be sent 1500 Hz higher than
> the USB carrier frequency on the assigned channel!  This is the FIRST
> REQUIREMENT of this type in ALL of the history of ham radio.  There are NO
> ham rigs today that are set to implement this requirement when, while set to
> to 5357.0 kHz, the mode switch is shifted from USB to CW!
>
> Beyond that, since most hams will not be happy with normal use of a 1500 Hz
> sidetone on 60m, new ham rigs will also need to shift the receiver frequency
> higher than that being used for USB phone mode, in order to produce an 800 Hz
> (or so) sidetone after the mode switch is taken from USB to CW.
>
> So...nothing in this discussion concerns any FCC desire for a particular
> receiver sidetone, but rather, additional issues that must be addressed
> by ham rig designers for multi-mode 60m operation that are significantly
> different than have ever been encountered.
>
> Mike / KK5F