[sbe-eas] NWS EAS Question

[modulationlimited at gmail.com]

Last fall we bought 22 brand new DASDEC IIIs to replace our former aging units.  The previous units were easily overloaded by collocated high power FM stations, including intermod to NWS frequencies.  At a couple locations we had four FM traps in line to reduce the undesired levels to the point where reception of more distant stations was possible, both NWS and FM.

We found the new DASDECs suffer pretty much the same situation and are still having to use the traps.  At some point we may buy some of the Inovonics INOmini 635s which we tested and found to be bulletproof, or try some of the new model 677 receivers which I imagine would work similarly well.

 

With the traps in place we occasionally miss a test but it’s rare.

 

John Collinson
Modulation Limited, Inc.

SBE Fellow, Member AFCCE

Member IEEE-BTS



CPBE+8VSB+AMD+ATSC3, CBNE

 

 

 

From: sbe-eas <sbe-eas-bounces at sbe.org> On Behalf Of Ed Czarnecki
Sent: Thursday, April 4, 2024 2:03 PM
To: SBE EAS Exchange - a mail list for discussion about the Emergency Alert System and other emergency communication issues. <sbe-eas at sbe.org>
Subject: Re: [sbe-eas] NWS EAS Question

 

Hi all – just a suggestion to send a message to support at digitalalertsystems.com <mailto:support at digitalalertsystems.com>  if you are noting any RF reception issues.

 

If you are trying to poll the NWS CAP 1.0 feed (for some reason?) there are known issues with that feed.

 

Ed

 

From: sbe-eas <sbe-eas-bounces at sbe.org <mailto:sbe-eas-bounces at sbe.org> > On Behalf Of MARTIN HADFIELD via sbe-eas
Sent: Wednesday, April 3, 2024 11:30 AM
To: SBE EAS Exchange - a mail list for discussion about the Emergency Alert System and other emergency communication issues. <sbe-eas at sbe.org <mailto:sbe-eas at sbe.org> >
Cc: MARTIN HADFIELD <mdhadfield at aol.com <mailto:mdhadfield at aol.com> >
Subject: Re: [sbe-eas] NWS EAS Question

 

Greeting Chris,

 

I just checked a DASDAC II here in WA State.  The box is running SW v4.3-0 - no problems with receiving NWS RWTs via the internal VHF receiver.  March 20th & March 27th were the most recent receptions logged.

 

Best regards,
Marty Hadfield, CPBE

WA/OR/ID FCC ABIP Inspector

>>> 


On Apr 1, 2024, at 6:21 PM, Christopher Tarr <chris at tarr.cc <mailto:chris at tarr.cc> > wrote:



Hello!

 

Has anyone received any reports of difficulties receiving NWS alert messages on DASDEC’s? Our local office has gotten a few complaints about missing tests, and the common theme seems to be that the stations are DASDEC users. One station reports software version 5.2-1.

 

Thanks,

Chris Tarr

SECC Broadcast Chair, WI

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