The frequency separation is probably too small unless you have a lot of
vertical separation and a lot of recieved signal strength,however,I have
linked repeaters in this way before but only using one CG tone which
followed the repeaters COR.Each controller had the capability to control
the receiver and the CG tone,giving good control. Worked very well!
Using two CG tones may leave those users listening for it out in the
cold. What controllers are presently in use? They may already be capable
of handling this scenario...
Wolfe wrote:
>Warren,
> Not sure you really need the UHF equipment. Since these two meter
>repeaters are up fairly high I assume they can see each other. Why not just
>add a second receiver at each site looking at the other repeater? Of course
>without some tricky controls this would lead to locking up both repeaters.
> If you are using tone squelch you can use a different tone to activate
>the secondary receiver. For example, say both repeaters normally use 100 htz
>tone. The secondary receiver is set use a tone of 123 htz so it does not
>respond to normal repeater activity. Then someone comes along and wants to
>link up the two repeaters. He transmits 123 htz tone and his repeater
>transmits 123 htz. The secondary receiver in the distant repeater is
>activated now because it is listening for 123 htz. The secondary receiver in
>the distant repeater brings up its transmitter but with 123 htz instead of
>its normal 100 htz tone. This would activate the secondary receiver in the
>first repeater but since it is the secondary receiver the active, main
>receiver has priority and would override it.
> There are some gotcha's with this system, The main receiver in each
>repeater would need to respond to at least two different tones. The tones
>should be filtered and regenerated. The tones would need to be muted during
>hang time, there only when the receivers are actually hearing a user. The
>main receiver must take priority over the secondary receiver and mute it.
> For the user of this system of linking is very easy - just change the
>tone!
> In this description I mentioned using only two different tones. In
>practice four would be probably be better, less chance of feedback during
>turn around.
> If there are only two repeaters involved this is a great way to
>effectively tie them together at times. It is legal, at least in the States,
>(Canada - don't know) as the secondary receivers are just that, auxiliary
>inputs to a repeater, not technically links. There is no "bring up the
>link", "turn off the link", to it. The linking state is dynamic and
>controlled by each user. It only exists as long as someone is transmitting
>the proper tone.
>
> Getting a couple of receivers to work this close to your output
>frequencies may be a challenge, but with some shielding and yagis, it should
>be do-able.
>
>73 and good luck with your projects,
>Al, K9SI
>
>PS: If you are using carrier squelch now you can use tone squelch only when
>you want to activate the distant repeater.
>
>
>
>< Date: Mon, 14 Mar 2005 14:15:49 -0500 (EST)
>< From: Warren "Beaul�" <[EMAIL PROTECTED]>
><Subject: linking & contrrolers
>
>
><I have two repeaters one at 145.390- the other at
><145.330- about 65 miles apart one at 3000ft the other
><at 1750ft Nothing but flat land between I want to
><link with 443.450 and 448.450 what type of controlers
><do I need and how do I do this. "Help"
>
>
>
>
>
>
>
>
>
>
>
>
>
>
Yahoo! Groups Links
<*> To visit your group on the web, go to:
http://groups.yahoo.com/group/Repeater-Builder/
<*> To unsubscribe from this group, send an email to:
[EMAIL PROTECTED]
<*> Your use of Yahoo! Groups is subject to:
http://docs.yahoo.com/info/terms/
