At 04:17 PM 11/22/04, you wrote:
>On Sunday 21 November 2004 05:07 pm, Mike WA6ILQ wrote: > > > A line driver card could be stripped and a vectorboard > > mounted and used to hold a few "ice cube" relays to > > do the switching. > >I've got no clue as I have never worked with line driver >cards. The micor station line driver card is a double-wide card and I was picturing stripping one and using it as a starting point - essentially a paddle board - for building up a sequence that would mount in the micor card cage. Picture a piece of vectorboard mounted on standoffs with wires going down to the original line driver board just to attach to the appropriate pins. A 555 can source or sink 200mils... I generally limit them to 100-120 just to avoid blowing them up. A few 555s with relays could do it. > > Alternatively... > > I don't know about the other repeater controller manu- > > facturers but I could do it on an Scom 7K with a few > > macros triggered from digital inputs and controlling > > digital outputs. > > > > The AC Power present signal can be derived from the > > unregulated side of the power supply, or worst-case from > > a wall-wart 5v power pack... either way it can drive an > > opto- isolator which can be fed to a digital input on the > > controller. > >Yep, feeding logic to a digital input to initiate the >sequence is the easy part. I've been up thinking about >this most of the night, and it looks like I can do it on my >RLC-4. It would sure be nice if there were a way to force a >slight pause between executing commands in a macro, >instead of starting a user timer and having it call yet another >macro when it expires. The Scom has a command that can be included in the macro to pause the execution - it actually freezes the entire controller until it times out. Maybe the Link has something similar. >The minimum PTT down time during >transition will be 2 seconds due to limitations on user >timers. Is there something that you can queue up that will force a shorter pause? Scom timers do not have that 2-second minimum, but if it did you could have a macro send a message to an unused port (maybe to the autopatch while it is on hook), then embed a macro trigger in the message string. The message could be a 1/2 second of MCW, or a paging tone sequence, as the contents wouldn't matter. >However, I think it will work! New project in the queue! Isn't that always the case? Projects get pushed onto to the queue faster than they get popped off.... > > I've found high power coax relays now and then at C & H > > Surplus a.k.a. C & H Sales in Pasadena, Calif. Phone is > > 626-796-2628. Don't know if they have a web site. > > > > Please post your results. > >Thanks, and thanks for all your input. I had previously >thought about and rejected the idea of controller >programming to do this, but now that I look at it again it >seems viable. I'll post whether it works or not, as soon as >I find time to get it done. Time to get a 'round 'tuit. >Paul N1BUG Mike WA6ILQ 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/