well fred this is in interesting discussion here
i dont have all lthe knowledge to work on the modif too fit the controler
you see
so i must pay for it in a telecom compagny here every time i need to do
something on it (as many others too )
these MSR are so rare to find good one around here ,sometime you may find
one but when you see it you wonder why it is not at the scrap yard,,,,they
are so used and dirty.
,it will not happened often this "turn on and off event" so it will
not damage the equipment
i remember seeing somewhere on the web an australian that built a board that
what used
to turn on and off a remote wheater station ,,,that was operate via a
repeater ,,,
another thing to find
ok best whishes Fred at you and you family ,for this new year
gervais,ve2ckn
----Original Message Follows----
From: Fred Townsend <[EMAIL PROTECTED]>
Reply-To: Repeater-Builder@yahoogroups.com
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] Re: interface to shut off a radio on
temporaly base
Date: Mon, 02 Jan 2006 18:03:44 -0800
skipp025 wrote:
>Hello back,
>
>You'd be installing a dtmf decoder on the vhf repeater receiver audio
>output. The Hamtronics TD-2 would do the job quite nice.
>
>I would probably do something different from throwing the AC Mains on and
>off, but it's not a bad idea. It just makes me nervous trying to tell
>someone how/why to switch semi large AC loads on and off.
>
>A high ac load current Solid State Relay with 3-30 volt dc control would be
>required. Good ones seem to run about $10 to $20 US on the used/new old
>stock market place.
>
>I would have simply disabled the UHF MSR with some dc logic lines... but
>shutting off the unused MSR isn't a bad deal when you're paying for
>electricity.
>
>Note the SSR (solid state relay) should be the switch at zero cross sine
>wave type, else you'll have large thuds and groans from the power
>transformer switching on during fractional on times of the supply ac sine
>wave.
>
There is a characteristic about SSRs that you should be aware of. In the off
state a SSR can have a leakage value that can be as low as 100K ohms. That's
enough to light a NE2 neon bulb. It's also enough to shock you if you get
across an open circuit. Be sure to include a safety switch in series for
working on the system. Of course you need a fuse or circuit breaker too.
Fred, AE6QL
>You could easily be in and out of this project for about $100 US.
>
>cheers,
>skipp
>
>
>
>>"gervais fillion" <[EMAIL PROTECTED]> wrote:
>>well skip
>>i would go for that kind of project:
>>on the vhf transmetter i would install a controler that would control the
>>AC of the uhf link msr,
>>as simple as that ,,,,in theory
>>
>>i would send a dtmf code on the vhf and the controler would turn off the
>>uhf radio by cutting the 120vac,as simple as that .
>>
>>now i must find a board that can do that ,and add a relay for the turn on
>>and off of the msr uhf
>>73/s skipp
>>gervais,ve2ckn
>>
>>----Original Message Follows----
>>From: "skipp025" <[EMAIL PROTECTED]>
>>Reply-To: Repeater-Builder@yahoogroups.com
>>To: Repeater-Builder@yahoogroups.com
>>Subject: [Repeater-Builder] Re: interface to shut off a radio on
>>
>>
>temporaly
>
>>base
>>Date: Mon, 02 Jan 2006 17:59:28 -0000
>>
>> >"gervais fillion" <[EMAIL PROTECTED]> wrote:
>> > Well,i dont know if i am at the right place but i'm
>> > going fishing here!
>>
>>What are you using for bait..? :-)
>>
>> > I have 2 MSR 2000 ,one is a Repeater the other one is
>> > a uhf msr2000 used as a link.
>>
>> > They are are both united by a cable,a big 1.5 x 2.5
>> > inch plug. I need an interface that i would install
>> > on the vhf repeater so i would shut off the uhf link
>> > via a dtmf code i would send on the air , or sometime
>> > i could had at the uhf msr to stop tx when i decide,
>> > does it exist somewhere??
>>
>>Yes, if you add many of the common tone decoders or
>>small repeater controllers with logic outputs use to
>>disable the UHF Radio.
>>
>> > Why all this, it will be used as a link on a big network
>> > of repeaters and time too time we need locally to connect
>> > too my echoirlp system so i need to close the uhf link
>> > so the network wont hear us
>> > 73/s all and thanks if you can help me
>> > gervais,ve2ckn
>>
>>Wire a tone decoder/control circuit like the Hamtronics
>>TD-2 DTMF controller into your system. Simply disable
>>the push to talk (transmit) and receiver audio/cor
>>functions in the link UHF radio or the interface connections
>>from the link radio back inside the VHF Repeater.
>>
>>cheers,
>>skipp
>>
>>
>>
>>
>>
>>
>>
>>
>>Yahoo! Groups Links
>>
>>
>>
>
>
>
>
>
>
>
>
>Yahoo! Groups Links
>
>
>
>
>
>
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