I found this interesting device while browsing over the
http://www.electronickits.com web site:
http://www.electronickits.com/kit/complete/ligh/vemk160.htm
I was looking for a way to turn a portable repeater on/off remotely when
I was out of the RF coverage area. This scheme uses a cellphone
Eric,
I too have seen that but for some reason these do not have it. I'm, not
certain,
but I think these systems were assembled piecemeal and not ordered as a
system.
If that is the case the thermal switch was omitted.
Anyway your solution is very simple and inexpensive.
lh
On Sat, May 1, 2010
http://www.electronickits.com/kit/complete/ligh/vemk160.htm
I was looking for a way to turn a portable repeater on/off
remotely when I was out of the RF coverage area. This scheme
uses a cellphone with a simple photo cell to detect when the
screen lights up during ringing.
For about
Nice little device for terrorists to trigger IEDs too. I bet if you ordered
100 of them, you'd get a visit from guys wearing dark shades and talking
into their cuff.
73,
Mike
WM4B
From: Repeater-Builder@yahoogroups.com
[mailto:repeater-buil...@yahoogroups.com] On Behalf Of skipp025
Mike Besemer \(WM4B\) mwbese...@... wrote:
Nice little device for terrorists to trigger IEDs too. I bet
if you ordered 100 of them, you'd get a visit from guys wearing
dark shades and talking into their cuff.
In reality they'd show up in the interests of job security
only. It would be
I agree, this is NOT a reliable or secure way to control a repeater.If you
set the phone to auto answer and hang a simple touchtone decoder on the RX
audio, THEN it would be a decent controller.
What you have there is a simple but effective BOMB DETONATOR...(
yes..they DO use them for
I was thinking the same thing, Skipp! That's how you know you're having a
bad day.
Hey Abdul... past me the duct tape.
Ring-Ring
Oh Crap!
73,
Mike
WM4B
From: Repeater-Builder@yahoogroups.com
[mailto:repeater-buil...@yahoogroups.com] On Behalf Of skipp025
Sent: Sunday, May 02, 2010 1:31 PM
On 5/2/2010 12:57 PM, skipp025 wrote:
I'm almost laughing out loud while thinking about all the wrong
numbers and undesired telemarketer calls shutting down the
repeater mid sentence.
s.
Nope, you can use a 2 call sequence to avoid this according to the docs.
Joe
Not AbdulMohammed.
Sent on the TELUS Mobility network with BlackBerry
-Original Message-
From: Mike Besemer \(WM4B\) mwbese...@cox.net
Date: Sun, 2 May 2010 15:52:50
To: Repeater-Builder@yahoogroups.com
Subject: RE: [Repeater-Builder] Re: Another neat kit for repeaters
I was
Does anyone have a preamplifier suitable for the 220MHz amateur band they care
to part with? My 220 project is nearing completion, and this is one of the
final parts I am in need of.
Please drop me an e-mail. Thank you!
--- In Repeater-Builder@yahoogroups.com, Eric Grabowski ejgrabow...@... wrote:
Looking for a receiver board and a transmitter board from a Motorola MSR2000
station. The boards must tune in the 440 to 450 MHz frequency range. Duplex
TX board preferred but a simplex TX board would be okay.
Actually most IED's are triggered by what is known as the two tone method, as
there was a need to afford protection for the bomb makers and a way of arming
the device remotely, mainly by cellular phones set to auto answer with DTMF
decoders These teams of around 5 people per cell actually
I have Celwave units, brand new.. high quality, and cheap. $50.00 post paid.
We use one on our repeater, resultant sensitivity is .15uv.
Lance N2HBA
- Original Message -
From: surf_boy82
To: Repeater-Builder@yahoogroups.com
Sent: Sunday, May 02, 2010 3:06 PM
Subject:
All
The problem is wind noise on the 147.240 duplexed repeater antenna.
Tower has a ladder with a wire rope safety cable running top to
bottom with a guide midway.
After using the IFR to generate a noisy signal, a soft mallet was
used to strike the antenna, tower legs, and finally the ladder.
Hi could any one roughly explain how a talkthrough unit works. thanks antony
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