Re: [wsjt-devel] WSJT-X: Working frequency suggestions

[Bill S. <g4...@cl...>]

On 26/06/2017 18:36, Jim Brown wrote:
> On Mon,6/26/2017 10:27 AM, Bill Somerville wrote:
>> To give an example of what we face, the current IARU region 1 band 
>> plan requires all MGM activity to be between 50300 and 50400 so 
>> expecting to run transatlantic QSOs on 6m JT9E/H on 50290 or indeed 
>> JT65/JT9 on 50276 is going to cause the region 1 band police a problem.
>
> Any bandplan that does not facilitate QSOs between regions is a 
> bandplan destined for failure. :)
>
> 73, Jim K9YC 

Hi Jim,

I agree but the region band plan coordinators would reply that, at least 
on 6m, there is no problem since the 50300 - 50400 section is available 
everywhere for narrow band digital modes.

BTW the definition of narrow band digital modes is problematic as region 
3 defines NB as not exceeding 2kHz bandwidth even though it shares 
spectrum with SSB which is allowed up to 6kHz b/w. That means region 3 
cannot use MSK144 (>2.4kHz b/w) in sections allocated to narrow band 
digital (NB). Therefore in region 3 MSK144 on 6m would have to be above 
50500 amongst the other wide band (WB) users like FM. As such a KL7 to 
Asiatic Russia digital MS contact would have to be cross frequency!! 
That seems rather unreasonable but that is where we currently are.

73
Bill
G4WJS.