[CQ-Contest] High Rate Dual Radio CQing

[Steve London]

There is some terminology confusion.

Dueling CQ's has been built into most contesting software for many 
years. You send a CQ on one band. When the CQ finishes, a CQ is 
automatically started on another band. If someone answers you on the 
first band, the CQ on the other band is automatically terminated, and 
you complete the usual QSO sequence on the first band. If no one 
answers, the software automatically bip-bops CQ's between the 2 bands 
until someone answers on either band, or you change strategy.

What ZF2MJ, OH0V, V47T, and others have advanced is running simultaneous 
pileups on two bands, with 2 QSO's in progress at the same time, but 
never transmitting on the two bands at the same time. This is quite 
different from the dueling CQ's which many contesters have used for years.

I propose using the term "simultaneous pileups", not "dueling CQ's", to 
describe what ZF2MJ, et.al., have done.

73,
Steve, N2IC

On 12/06/2015 02:04 PM, ve4xt at mymts.net wrote:
> Duelling CQs seems to be a surprise only to those who haven't been paying attention. It's always been part of my lexicon that duelling CQs are just a part of SO2R.
>
> 73, kelly, ve4xt
>
> Sent from my iPhone
>
>> On Dec 6, 2015, at 11:54, "Stephen Bloom" <sbloom at acsalaska.net> wrote:
>>
>> Interesting ...
>>
>> I did this for NAQP and SSCW without even thinking of it as anything other than efficient SO2R (not that it mattered ....I was operating from VE7 and no technique short of remote xcvrs from another part of the country was going to make me competive with propagation of the time.)  Having said that, I can't even fathom handling the audio streams the way N6MJ does.  I'm still recovering from the pileups at 9H6A.
>>
>> 73
>> Steve KL7SB
>>
>> p.s.  Joined the group recently ..with Rich passing ..thought another KL7 should be here.
>>
>>
>>
>> -----Original Message-----
>> From: CQ-Contest [mailto:cq-contest-bounces at contesting.com] On Behalf Of Björn SM0MDG
>> Sent: Sunday, December 06, 2015 1:46 AM
>> To: Matt Murphy <matt at nq6n.com>
>> Cc: sawyered at earthlink.net; cq-contest <cq-contest at contesting.com>
>> Subject: Re: [CQ-Contest] High Rate Dual Radio CQing
>>
>>> On 02 Dec 2015, at 17:32, Matt Murphy <matt at nq6n.com> wrote:
>>>
>>> I agree. It's extremely impressive.  Was there a rule change that
>>> allowed this to happen this year, or did N6MJ and Ct1BOH come up with the idea?
>>
>> There is no rule prohibiting “duelling CQ”, i.e. running on two bands simultaneously. This is OK with the rules as long as only one signal is transmitted at any time. I have checked this personally with the CQ contest promotor a few years ago before adopting this way of operation.
>>
>> To me this is useful even at low rates at the end of the contest as calling CQ on two bands are more likely to increase the rate than working just one band.
>>
>> In addition N1MM is set do this with an additional SO2R controller and two radios.
>>
>> 73 de Björn,
>> SM0MDG
>> SE0X
>>
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