On Mon,6/26/2017 11:07 AM, Bill Somerville wrote:
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.
That's a great example that exposes issues with the IARU allocation and
coordination process. And these are often issues that take decades to be
worked out.
73, Jim K9YC
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