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

[Bob Nielsen]

For those rigs with fixed memory channels on 60 m, it might make sense to use a keyed audio oscillator in SSB mode.  

Bob, N7XY

On Nov 19, 2011, at 2:51 PM, Matthew Pitts wrote:

> Don,
> 
> You're right, for transceivers that implement the 60 meter band in the VFO; not all compatible transceivers do. My FT-817 has 5 memory channels for 60m, thus not much chance for me ever using the new modes on it; I guess I'll have to add the 60m module to my K2 for that. 
> 
> Matthew Pitts
> N8OHU
> 
> Sent from my Wireless Device
> 
> -----Original Message-----
> From: Don Wilhelm <w3fpr at embarqmail.com>
> Sender: elecraft-bounces at mailman.qth.net
> Date: Sat, 19 Nov 2011 17:44:41 
> To: <elecraft at mailman.qth.net>
> Reply-To: don at w3fpr.com
> Subject: Re: [Elecraft] US 60 Meter Band Changes Approved by FCC - CW Issues
> 
> Mike,
> 
> Not all transceivers shift the transmit frequency.
> 
> The Elecraft K2 and K3 dial always indicate the carrier frequency, and 
> what is displayed does not change when changing modes.  With Elecraft, 
> the pitch of signals will change when changing between CW and SSB.
> 
> OTOH, my Yaesu transceivers do shift the displayed frequency when 
> changing between SSB and CW, but they shift the receiver - the display 
> will indicate the transmitted carrier frequency.  If you were receiving 
> a signal in SSB mode and shift to CW, the pitch will stay the same.
> 
> With either Elecraft or Yaesu, there is nothing complicated to figure 
> out - set the displayed frequency to the center channel frequency - but 
> with the Yaesu, one must do that AFTER setting to CW mode.  With the 
> Elecraft gear, you can set the frequency in whichever mode you choose, 
> then switch to CW.
> 
> 73,
> Don W3FPR
> 
> On 11/19/2011 4:47 PM, Mike Morrow wrote:
>> 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! 
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft at mailman.qth.net
> 
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft at mailman.qth.net
> 
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html

_____
N7XY DX Cluster Node - telnet to n7xy.net, port 7300