[Scan-DC] Feds admit radios interfere with garage door openers

[Bill Dunn]

Generally by rule it is + 10 Mhz



-----Original Message-----
>From: Robert Eisner via Scan-DC <scan-dc at mailman.qth.net>
>Sent: Nov 18, 2019 12:26 PM
>To: Mark Cobbeldick <kb4cvn at yahoo.com>
>Cc: Scan-DC at mailman.qth.net
>Subject: Re: [Scan-DC] Feds admit radios interfere with garage door openers
>
>What is the offset for the input frequencies for a 380 MHz TRS?
>
>Sent from my iPhone
>
>> On Nov 18, 2019, at 11:11 AM, Mark Cobbeldick via Scan-DC <scan-dc at mailman.qth.net> wrote:
>> 
>> Every 378-400 P-25 system I have installed I have gotten reports of
>> this issue.  With the worst being an Army Depot in central
>> Pennsylvania.
>> 
>> Talking to City/County Commissions or trying to explain the situation
>> to pissed-off homeowners doesn't get you anywhere.  
>> They don't know what a FCC Part-15 device is,......or care!
>> 
>> Their [often expensive] garage door opener doesn't work, and "I" broke
>> it is all they see...
>> 
>> 
>> 
>> 
>> ===================================
>> Mark Cobbeldick, KB4CVN
>> Monroe, VA
>> ===================================
>> 
>> My goal in life is to be as good of a person my dog already thinks I
>> am.
>> 
>> -
>> 
>> ------------------------------
>> 
>> Message: 7
>> Date: Thu, 7 Nov 2019 17:05:57 -0500
>> From: Alan Henney <alan at henney.com>
>> To: Scan DC <Scan-DC at mailman.qth.net>
>> Subject: [Scan-DC] Feds admit radios interfere with garage door
>> openers
>> 
>> Is the new Warrenton system 380 MHz?  How can that impact a receiver
>> at 315 MHz?
>> 
>> A top-secret and secure federal government facility just northwest of
>> Warrenton admitted Tuesday that it may be responsible for crippling
>> dozens of garage door openers in two nearby subdivisions.
>> 
>> <snip>
>> 
>> read more at:
>> 
>> https://www.fauquiernow.com/fauquier_news/article/fauquier-feds-admit-
>> radios-interfere-with-garage-door-openers-11-5-2019
>> 
>> 
>> ------------------------------
>> 
>> 
>> Message: 9
>> Date: Thu, 7 Nov 2019 17:51:13 -0500
>> From: "~Bill" <ecps92 at earthlink.net>
>> To: "'Alan Henney'" <alan at henney.com>,    "'Scan DC'"
>>    <Scan-DC at mailman.qth.net>
>> Subject: Re: [Scan-DC] Feds admit radios interfere with garage door
>> openers
>> 
>> Since Door Openers share with FEDS and are pretty cheap on the RX
>> side, it is like trying to listen to an 800 TRS while living next-door
>> to a Cellular site.
>> 
>> Been plenty of stories over the years on this topic across the
>> country.
>> 
>> Heck even in a high RF zone, Car Alarm Remotes tend to not work unless
>> right on-top of the car.
>> 
>> 
>> Bill - N1KUG
>> Boston, Mass
>> Cruise Ship Frequencies
>> http://scanmaritime.com/
>> 
>> 
>> 
>> ------------------------------
>> 
>> 
>> 
>> Message: 10
>> Date: Fri, 8 Nov 2019 08:26:18 -0500
>> From: John Wilson <w4uvv at comcast.net>
>> To: Alan Henney <alan at henney.com>, Scan DC <Scan-DC at mailman.qth.net>
>> Subject: Re: [Scan-DC] Feds admit radios interfere with garage door
>> openers
>> 
>> FYI my database shows 319 & 390 mhz. also as low power garage door
>> opener/closer frequencies.? The Ft. Lee VA trs control frequency
>> installed over 10 years ago is on 386 mhz. and has good area
>> coverage.? 
>> 
>> Any garage door opener/closer installed in the area using the 300 mhz.
>> 
>> range can be at great risk of not working. I'm sure the area
>> installers are aware of the potential problem.? My home was built with
>> an attached one vehicle carport.? Later separately I had a two vehicle
>> carport installed to accommodate my vehicle's roof mounted radio
>> antennas.
>> 
>> John
>> W4UVV
>> 
>> 
>> ------------------------------
>> 
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