On 2/4/2012 4:52 PM, Sandy wrote:
> All correct! It makes no difference what frequency you use on PSK! As
> long as the pair of tones are within the 2.8 Khz bandwidth of the
> "Channel".
WRONG! WRONG! WRONG!
*Read* the FCC's Report & Order - it is far more complete than the
rules changes printed in the Federal Register. In the Report & Order,
the Commission *expressly prohibits* multiple users per channel in
both "RTTY" and CW mode and directs that all signals will be centered
in the respective channel.
73,
... Joe, W4TV
On 2/4/2012 4:52 PM, Sandy wrote:
> All correct! It makes no difference what frequency you use on PSK! As long
> as the pair of tones are within the 2.8 Khz bandwidth of the "Channel".
> There is a 100 Hz. "guard band at the top and bottom edges of the "Channel"
> therefore the channel is only 2.8 Khz wide.
>
> Sandy W5TVW
>
> -----Original Message-----
> From: Fred Jensen
> Sent: Saturday, February 04, 2012 12:48 PM
> To: elecraft@mailman.qth.net
> Subject: Re: [Elecraft] FCC 60m Band Change Rules Published
> InFederalRegister On 03 February 2012 - Correction
>
> I think we all need to be careful. In the case of USB, we put our
> "suppressed carrier" [i.e. dial reading on a K3] 1.5 KHz below the
> authorized center frequency. The USB energy is above that and fills the
> 2.8 MHz channel, and it's "one QSO per channel."
>
> For CW, we are told to put our keyed RF signal *on* the channel center
> frequency. There is only one "center frequency" per channel, so again,
> it's "one QSO per channel." CW and USB seem pretty clear.
>
> The two data modes aren't quite as clear. "Data", as the FCC uses it is
> a 2K80J2D emission which wiki.radioreference.com defines as "HF
> PACTOR-III." Again, the emission fills the channel and it's "one QSO
> per channel." The FCC's "RTTY" is a 60H0J2B emission which
> radioreference.com defines as PSK31, which precludes what we hams define
> as RTTY [45.5 baud 170 Hz shift FSK].
>
> What's not clear is where to place your PSK31 signal. If your PSK31
> signal extends upward from your dial frequency, then the R&O seems to
> say you put your dial frequency 1.5 KHz below the channel center
> frequency. Where you actually transmit your PSK31 signal above that
> doesn't appear to be specified as long as it isn't 2.8 KHz or more,
> which is a little strange. Given the "one QSO per channel" philosophy
> for CW, Phone, and PACTOR-III, I would think that they would want my
> PSK31 signal centered in the channel and it would be "one PSK31 QSO per
> channel" like the other emissions. It just doesn't say that explicitly.
>
> There are several references in the R&O to various techniques for
> minimizing interference to Federal users, and that seems to be a driving
> factor behind the "one QSO per channel" requirement. If it's just me
> and you conversing, there will be natural, frequent breaks for a primary
> user to claim the channel. If the 60H0J2B emission type is intended to
> allow multiple QSO's within the channel, as happens now above 14070,
> there will be no breaks and no way for a primary user to claim the channel.
>
> I don't have the answer, if someone does I'd really like to hear it, but
> do I think we all need to be careful as 5 March rolls around.
>
> 73,
>
> Fred K6DGW
> - Northern California Contest Club
> - CU in the 2012 Cal QSO Party 6-7 Oct 2012
> - www.cqp.org
>
> On 2/3/2012 7:14 PM, Rick Bates wrote:
>> Hi Sandy,
>>
>> If I read it correctly, we can use RTTY, Pactor and PSK modes (using USB
>> if
>> AFSK) and are limited to 2.8 KHz. It said we were NOT limited to those
>> modes for data as it would suppress experimentation.
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft@mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>
>
> -----
> No virus found in this message.
> Checked by AVG - www.avg.com
> Version: 2012.0.1913 / Virus Database: 2112/4788 - Release Date: 02/04/12
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft@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@mailman.qth.net
This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
