[SEDXC] '' K5D Band-plan ?''

[Bill Coleman]

On Feb 17, 2009, at 9:30 PM, k4lms at bellsouth.net wrote:

> Whoever designed K5D band-Plan put their 40 meter SSB calling freq.  
> as 7.084 mHz... ??? This frequency is in the MIDDLE of the RTTY  
> portion on 40 meters..??
>
> Can anyone explain this??

Simple. While the Region 2 band-plan has this portion of 40m allocated  
for CW and Digital communications, most of Region 2 outside of the US  
uses 7050-7100 kHz for SSB communications. This is to be in harmony  
with the band-plans in place in Regions 1 and 3, which only allowed  
7000-7100 kHz for the entire 40m band.

Also, in Regions 1 and 3, there are a number of powerful (eg multi-MW)  
shortwave broadcast stations from 7100-7300 kHz. So, if K5D is to have  
any hope of working stations in Regions 1 and 3, they have to be  
somewhere where they can be heard (eg below 7100 kHz), plus they'll  
have to listen where stations in Regions 1 and 3 can transmit (eg  
below 7100 kHz).

Of course, all this is about to change. At the end of this month, all  
of the shortwave broadcasters will have to move out of 7100-7200 kHz,  
as it becomes amateur exclusive in all regions then. With a 200 kHz  
worldwide band, I think you'll see more harmonization of use of the  
lower portion for CW and RTTY between Regions 1 & 3 and Region 2.

Today, though, 40m is just too doggone small in Regions 1 & 3, with  
100 kHz for EVERYTHING. RTTY in Regions 1 & 3 is typically below 7050  
kHz, much to the dismay of many 40m CW aficionados.


Bill Coleman, AA4LR, PP-ASEL        Mail: aa4lr at arrl.net
Quote: "Not within a thousand years will man ever fly!"
             -- Wilbur Wright, 1901