The ARRL's definition of a band plan is " A band plan refers to a voluntary
division of a band to avoid interference between incompatible modes.".
(ref: http://www.arrl.org/band-plan). I believe the interference from
automated Winlink stations fall into the ARRL's band plan definition and
needs to be addressed in the new band plan.
-----Original Message-----
From: RTTY [mailto:rtty-bounces@contesting.com] On Behalf Of Dave AA6YQ
Sent: Saturday, March 29, 2014 8:26 PM
To: 'Terry'; rtty@contesting.com
Subject: Re: [RTTY] Band Plan Points
>>>AA6YQ comments below
-----Original Message-----
From: Terry [mailto:ab5k@hotmail.com]
Sent: Saturday, March 29, 2014 9:13 PM
To: 'Dave AA6YQ'; rtty@contesting.com
Subject: RE: [RTTY] Band Plan Points
Hi Dave,
I got back on the air late last year after a 5 year period of station
building. The major change that I noticed was that no matter
where I operated (except for 10 meters) , I was QRMed by unattended Winlink
stations. So whatever busy frequency detector is being
used, it's not working.
>>>That's because they aren't using busy frequency detectors, not because
the ones they're using don't work.
>>>The busy frequency detectors incorporated in WinMor and ALE are
>>>actually quite effective. If such busy frequency detectors were
retrofitted into Winlink servers, there'd be a significant reduction in the
QRM they generate. Sadly, attempts to make this happen have been rejected.
>>>With respect to RM-11708, my recommendation to the FCC and to the
>>>ARRL is that no unattended station be allowed to use a
bandwidth greater than 2200 hertz within the 97.221(b) subbands unless
equipped with both CW identification and busy frequency detection
capability. That would incentivize unattended stations seeking higher
performance to incorporate busy frequency detectors.
>>>Independently of RM-11708, I believe that all unattended stations
>>>operating outside the 97.221(b) subbands should be required to
incorporate both CW identification and busy frequency detection.
Accomplishing this would require FCC action.
73,
Dave, AA6YQ
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