Donald Ritchie wrote:
Thanks Larry;
I didn't design this .
It is one of a large number of nodes of a state wide repeater, all on 145.19.
The "controller" is in Columbus, Ohio and this node is in Cleveland (Strongsville)-
The analog Microwave system is a "left in place " backup - backup.
We don't have access to the channel bank, it's in another building.
There is a 4W ckt to the repeater, the 4W to 4W is just to give us control of the levels.
I'm thinking the SF / E&M card may have gone bad. I'm about 40 road miles from the site and only have limited access.
I'm trying to "get my ducks in a row" before making the trip.
We had hoped to get the "cleveland node" back on the network before we leave for Dayton on Thursday,
but it doesn't look like that will happen - That's why I am looking for manual(s)
Thanks
Don
larry wrote:
do you have access to both sides of the mw circuit? i'm curious why they have a 4w/4w repeater in the loop (should be enough gain from the channel, unless it's a carbon mike input ;-) is it being used as a two way link? or more likely one way (receiver at one location to transmitter at another location.
you should be able to use an "out-of-band" controller too (it uses 3500 Hz "mark busy" instead of the 2600 Hz "in-band") look for "remote base" controllers/ interfaces.
hams invented this stuff, they can make a simple 2600 Hz "decoder" using 88 mH loading coils, a 4046 pll or a 567 pll to detect the tone. also the original wescom stuff was built like the proverbial brick outhouse and should be repairable. (unless the place burned to the ground)
-larry
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