Search found 162 matches

by ModRob
Sun Sep 22, 2013 1:11 am
Forum: Projects & Kits
Topic: Output amplifier in older broadcast console
Replies: 0
Views: 19558

Output amplifier in older broadcast console

Not sure if I'm posting in correct area, so here goes... I have a Harris Stereo 80 broadcast console, from the late seventies area, and I'm trying to feel my way around learning about it. I have two amplifier modules (Left Program, Left Monitor) that somehow "smoked" (little whiff of white...
by ModRob
Tue Jan 05, 2010 7:07 pm
Forum: General Discussion
Topic: guidance for "alert" circuit
Replies: 28
Views: 9873

Re: guidance for "alert" circuit

hmmmm..where did the edit button go to?

Sorry...yes the punch block has all separated...
by ModRob
Tue Jan 05, 2010 7:05 pm
Forum: General Discussion
Topic: guidance for "alert" circuit
Replies: 28
Views: 9873

Re: guidance for "alert" circuit

I have two dispatchers, and from what I was told, each has a pair of wires--one for incoming, one for outgoing. And yes, that's the only tones that come down to me...
by ModRob
Tue Jan 05, 2010 10:23 am
Forum: General Discussion
Topic: guidance for "alert" circuit
Replies: 28
Views: 9873

Re: guidance for "alert" circuit

Thanks fellows for tips and all... I forgot to mention that this is not a very complicated or sophisticated type of deal. Nothing going on but conversation, just like a phone call, only having the tones as a way to alert us to the incoming "call". Nothing else goes on...I really wouldn't t...
by ModRob
Tue Jan 05, 2010 10:14 am
Forum: General Discussion
Topic: guidance for "alert" circuit
Replies: 28
Views: 9873

Re: guidance for "alert" circuit

Oh wow, again...I can "see" how it is working now, by your description...I love this stuff, just wished I had more knowledge of it, but too many things on my plate in other areas...this one is so important at the moment, because it affects me and my fellow workers during our shifts. We get...
by ModRob
Tue Jan 05, 2010 8:06 am
Forum: General Discussion
Topic: guidance for "alert" circuit
Replies: 28
Views: 9873

Re: guidance for "alert" circuit

oops...tried to put in one of the smilies, but I guess I didn't get it right...
by ModRob
Tue Jan 05, 2010 8:03 am
Forum: General Discussion
Topic: guidance for "alert" circuit
Replies: 28
Views: 9873

Re: guidance for "alert" circuit

wow! Thanks so much for the investment of your time. And yes, it would be much easier I'm sure to come off that LED in the box...http://forum.servomagazine.com/posting.php?mode=reply&f=1&t=15207&sid=1bfddbbfcd1d56efdfe5c2fe13374d47# and I just might suggest it to the techs and see what t...
by ModRob
Fri Jan 01, 2010 11:42 pm
Forum: General Discussion
Topic: guidance for "alert" circuit
Replies: 28
Views: 9873

Re: guidance for "alert" circuit

This "add-on" would be sensing for two different dispatchers. But again, each has one phone wire at a point on a punch-down panel where I'd get access to the incoming signal for either one. Hmmm..that brings me to another point. There are times when both would be trying to tone me up at th...
by ModRob
Fri Jan 01, 2010 11:38 pm
Forum: General Discussion
Topic: guidance for "alert" circuit
Replies: 28
Views: 9873

Re: guidance for "alert" circuit

Sorry Kev for the slight...but as Robert mentioned, due to space constraints it would not be feasible on this unit.
by ModRob
Fri Jan 01, 2010 12:52 pm
Forum: General Discussion
Topic: guidance for "alert" circuit
Replies: 28
Views: 9873

Re: guidance for "alert" circuit

Man, I like this stuff...getting inspired again... Just found out that my incoming tones are DTMF (#3#), but was told to remember that a "600 ohm iso transformer" would be needed to keep from "loading down the line"...Also was told that a tone decoder is necessary, and that there...
by ModRob
Thu Dec 31, 2009 11:11 pm
Forum: General Discussion
Topic: guidance for "alert" circuit
Replies: 28
Views: 9873

Re: guidance for "alert" circuit

I like where you are going with this, but for some reason (I may be completely off on this one) I think this set-up we have/had is more simple than that. From what I can tell, a lot of equipment that is used in our "area" is very dated, many times obsolete. But our talented team of techs s...
by ModRob
Thu Dec 31, 2009 1:30 pm
Forum: General Discussion
Topic: guidance for "alert" circuit
Replies: 28
Views: 9873

Re: guidance for "alert" circuit

I'm thinking that it would be something easy to attach to the inbound line that rests in the punch panel...I think that after all return to work after the holiday, then I can ask specific questions on the workings of it. For instance, what are these three "tones" that come down the wire to...
by ModRob
Thu Dec 31, 2009 1:27 pm
Forum: General Discussion
Topic: guidance for "alert" circuit
Replies: 28
Views: 9873

Re: guidance for "alert" circuit

Questions- 1) Does the new console reset alarms once communication is established (as did the old one)? 2) Do you have access to the interior of the new console? 3) Do you have authorization to rework the internal circuitry? 4) If denied the above, do you have access to the incoming lines and author...
by ModRob
Wed Dec 30, 2009 6:56 pm
Forum: General Discussion
Topic: guidance for "alert" circuit
Replies: 28
Views: 9873

guidance for "alert" circuit

At my worksite, I have a Radio Control Console that I use; in it, I have two feeds where I have direct communication with a person working two hours away from me (thru phone lines). Each "feed" is a pair of lines; one for receive, and one for transmit. When the person on the other end is n...
by ModRob
Sun Nov 08, 2009 9:31 am
Forum: General Discussion
Topic: Want to "convert" RV heat...
Replies: 5
Views: 2880

Want to "convert" RV heat...

Well, here's another in my long line of quests that are pretty-much nonsensical... I'd like to change the furnace in my RV (1987) to something electric. Or at least when it's parked at home, I could use this other system and plug up to another complete circuit running from my house, as I tend to hav...