Part-90 had the low-power restriction removed back in about 2010, even
for portables on itinerant frequencies. Used to be 2 or 4W, I forget. If
you can get your hands on a Part-90 certified 10 to 25W HT, and your
license is modified to reflect the max ERP of your MO class units, then
you're good to go. I did a Part-90 CONUS VHF & UHF Itinerant app for us
last year and specified 5W ERP since that's what most of the cheap-o
Part-90 certified Chinese walkies will do on high-power.
On 4/9/2017 9:47 PM, Jaime Solorza wrote:
Believe you are correct Lewis. .Never seen commercial ones more than
five watts....I think Harris sells 7 watt for military and tactical use.
On Apr 9, 2017 7:23 PM, "Lewis Bergman" <[email protected]
<mailto:[email protected]>> wrote:
Its not the licensed freq. I believe portables are limited to 5
watts in the US. I could be wrong.
On Sun, Apr 9, 2017, 2:12 PM Mitch Koep <[email protected]
<mailto:[email protected]>> wrote:
LOL
It was set to the siren system Freq to test turn on turn off
during repair or install.
So what FCC REG is it in violation of when you use
the Licensed Freq???
Mitch
On 04/09/2017 12:57 PM, Lewis Bergman wrote:
I don't see how that meets FCC regs.
On Sun, Apr 9, 2017, 11:59 AM Mitch Koep <[email protected]
<mailto:[email protected]>> wrote:
We used this to test the sirens....
http://www.ebay.com/itm/7W-OUTPUT-HIGH-POWER-TYT-TH-F8-VHF-Handheld-Dual-Display-FM-DTMF-2-Way-Radio-/222143191036?_trksid=p2385738.m2548.l4275
<http://www.ebay.com/itm/7W-OUTPUT-HIGH-POWER-TYT-TH-F8-VHF-Handheld-Dual-Display-FM-DTMF-2-Way-Radio-/222143191036?_trksid=p2385738.m2548.l4275>
On 04/09/2017 11:40 AM, Lewis Bergman wrote:
Most I of those we installed ages ago are VHF but the
only trigger is either a 2 tone or 5/6 tone paging
format. Anyone can duplicate them with a $250 old
service monitor off eBay or with a sound card and some
specs. Feed that audio into a transmitter and it is
pretty simple.
All the old service monitors had all the common formats
used in rf.
On Sun, Apr 9, 2017, 10:28 AM Chuck McCown
<[email protected] <mailto:[email protected]>> wrote:
I forgot to mention, our whole system was paid for
by the feds about 20 years ago due to the nerve gas
incinerator.
*From:* Chuck McCown
*Sent:* Sunday, April 09, 2017 9:24 AM
*To:* [email protected]
*Subject:* Re: [AFMUG] Were you bored this weekend
Chuck ? :)
Where I live this half of the county is totally
covered. Each Wednesday at 3pm it says : “this is
a test, this is a test, this is a test of the
Tooele county emergency warning system”. Looks like
900 MHz feeding the system. Many times I have
thought about commandeering the system to announce
the return of Jesus or something.
*From:* Colin Stanners
*Sent:* Sunday, April 09, 2017 3:52 AM
*To:* [email protected]
*Subject:* Re: [AFMUG] Were you bored this weekend
Chuck ? :)
If it's an old system, it's very possible there's
nothing desirable like authentication/encryption -
it may just be "turn on the sirens if you see any
signal on the frequency of 155.555mhz" Anyone with
some RF knowledge, a $300 SDR (HackRF One) and a $50
amateur radio flea market "2 meter band" amplifier
could blanket a city with such a signal.
On Sun, Apr 9, 2017 at 1:15 AM, CBB - Jay Fuller
<[email protected]> wrote:
Sirens are bad right ?
Create a custom radio on a certain frequency? I
am sure these things are set off with a radio
right....
https://www.usatoday.com/story/news/2017/04/08/hacker-triggers-all-156-emergency-sirens-dallas/100212412/
<https://www.usatoday.com/story/news/2017/04/08/hacker-triggers-all-156-emergency-sirens-dallas/100212412/>
Sent from my Verizon 4G LTE Smartphone
--
Mitch Koep
A Better Wireless
218-851-8689 <tel:%28218%29%20851-8689> cell
--
Mitch Koep
A Better Wireless
218-851-8689 <tel:%28218%29%20851-8689> cell
